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61 Commits

Author SHA1 Message Date
Dr. Stephen Henson
8964efc413 prepare for release 2013-02-05 16:50:37 +00:00
Dr. Stephen Henson
430b637bd5 make update 2013-02-05 16:50:36 +00:00
Dr. Stephen Henson
ca3b81c858 Fix error codes.
(cherry picked from commit 35d732fc2e)
2013-02-05 16:50:36 +00:00
Dr. Stephen Henson
031cbecf86 update NEWS and CHANGES 2013-02-05 16:50:36 +00:00
Andy Polyakov
1213e6c3c2 bn_word.c: fix overflow bug in BN_add_word.
(cherry picked from commit 134c00659a)
2013-02-05 16:50:36 +00:00
Dr. Stephen Henson
32619893b4 update NEWS 2013-02-05 16:50:35 +00:00
Andy Polyakov
40e0de0395 s3/s3_cbc.c: allow for compilations with NO_SHA256|512.
(cherry picked from commit d5371324d9)
2013-02-05 16:50:35 +00:00
Andy Polyakov
5f9345a2f0 ssl/s3_cbc.c: md_state alignment portability fix.
RISCs are picky and alignment granted by compiler for md_state can be
insufficient for SHA512.
(cherry picked from commit 36260233e7)
2013-02-05 16:50:35 +00:00
Andy Polyakov
33ccde59a1 ssl/s3_cbc.c: uint64_t portability fix.
Break dependency on uint64_t. It's possible to declare bits as
unsigned int, because TLS packets are limited in size and 32-bit
value can't overflow.
(cherry picked from commit cab13fc847)
2013-02-05 16:50:35 +00:00
Dr. Stephen Henson
1909df070f Don't access EVP_MD internals directly. 2013-02-05 16:50:35 +00:00
Dr. Stephen Henson
c23a745820 Add ordinal for CRYPTO_memcmp: since this will affect multiple
branches it needs to be in a "gap".
2013-02-05 16:50:34 +00:00
Dr. Stephen Henson
924b117422 Timing fix mitigation for FIPS mode.
We have to use EVP in FIPS mode so we can only partially mitigate
timing differences.

Make an extra call to HMAC_Update to hash additonal blocks
to cover any timing differences caused by removal of padding.
2013-02-05 16:50:34 +00:00
Dr. Stephen Henson
24b2806097 Move CRYPTO_memcmp to o_init.c when compiling with fips: cryptlib.o
is in the fips module for fips capable builds.
2013-02-05 16:50:34 +00:00
Dr. Stephen Henson
99f5093347 The cbc functions shouldn't be inside #ifdef OPENSSL_NO_TLSEXT 2013-02-05 16:50:34 +00:00
Ben Laurie
be88529753 Update DTLS code to match CBC decoding in TLS.
This change updates the DTLS code to match the constant-time CBC
behaviour in the TLS.
(cherry picked from commit 9f27de170d)
(cherry picked from commit 5e4ca556e970edb8a7f364fcb6ee6818a965a60b)

Conflicts:
	ssl/d1_enc.c
	ssl/d1_pkt.c
	ssl/s3_pkt.c
2013-02-05 16:50:33 +00:00
Ben Laurie
b3a959a337 Don't crash when processing a zero-length, TLS >= 1.1 record.
The previous CBC patch was bugged in that there was a path through enc()
in s3_pkt.c/d1_pkt.c which didn't set orig_len. orig_len would be left
at the previous value which could suggest that the packet was a
sufficient length when it wasn't.
(cherry picked from commit 6cb19b7681)
(cherry picked from commit 2c948c1bb218f4ae126e14fd3453d42c62b93235)

Conflicts:
	ssl/s3_enc.c
2013-02-05 16:50:33 +00:00
Ben Laurie
2928cb4c82 Fixups. 2013-02-05 16:50:33 +00:00
Ben Laurie
a33e6702a0 Oops. Add missing file.
(cherry picked from commit 014265eb02)
(cherry picked from commit 7721c53e5e9fe4c90be420d7613559935a96a4fb)
2013-02-05 16:50:33 +00:00
Ben Laurie
35a65e814b Make CBC decoding constant time.
This patch makes the decoding of SSLv3 and TLS CBC records constant
time. Without this, a timing side-channel can be used to build a padding
oracle and mount Vaudenay's attack.

This patch also disables the stitched AESNI+SHA mode pending a similar
fix to that code.

In order to be easy to backport, this change is implemented in ssl/,
rather than as a generic AEAD mode. In the future this should be changed
around so that HMAC isn't in ssl/, but crypto/ as FIPS expects.
(cherry picked from commit e130841bcc)

Conflicts:
	crypto/evp/c_allc.c
	ssl/ssl_algs.c
	ssl/ssl_locl.h
	ssl/t1_enc.c
(cherry picked from commit 3622239826698a0e534dcf0473204c724bb9b4b4)

Conflicts:
	ssl/d1_enc.c
	ssl/s3_enc.c
	ssl/s3_pkt.c
	ssl/ssl3.h
	ssl/ssl_algs.c
	ssl/t1_enc.c
2013-02-05 16:50:32 +00:00
Andy Polyakov
7ad132b133 .gitignore adjustments 2013-02-05 16:50:32 +00:00
Ben Laurie
2708813166 Add and use a constant-time memcmp.
This change adds CRYPTO_memcmp, which compares two vectors of bytes in
an amount of time that's independent of their contents. It also changes
several MAC compares in the code to use this over the standard memcmp,
which may leak information about the size of a matching prefix.
(cherry picked from commit 2ee798880a)

Conflicts:
	crypto/crypto.h
	ssl/t1_lib.c
(cherry picked from commit dc406b59f3169fe191e58906df08dce97edb727c)

Conflicts:
	crypto/crypto.h
	ssl/d1_pkt.c
	ssl/s3_pkt.c
2013-02-05 16:50:32 +00:00
Ben Laurie
affe98998a Add target so I can build. 2013-02-05 16:50:32 +00:00
Dr. Stephen Henson
66e8211c0b Don't try and verify signatures if key is NULL (CVE-2013-0166)
Add additional check to catch this in ASN1_item_verify too.
2013-02-05 16:50:31 +00:00
Dr. Stephen Henson
dd2dee60f3 Don't include comp.h in cmd_cd.c if OPENSSL_NO_COMP set 2013-01-23 01:16:59 +00:00
Dr. Stephen Henson
6495179af6 Don't include comp.h if no-comp set. 2013-01-20 01:16:25 +00:00
Dr. Stephen Henson
61b8c79d15 Add .gitignore 2013-01-11 23:21:19 +00:00
Dr. Stephen Henson
42aa3ec4f2 PR: 2888
Reported by: Daniel Black <daniel.black@openquery.com>

Support renewing session tickets (backport from HEAD).
2012-12-10 16:45:39 +00:00
Dr. Stephen Henson
bb152dae8f check mval for NULL too 2012-12-04 17:26:36 +00:00
Dr. Stephen Henson
c42ab44087 fix leak 2012-12-03 16:33:54 +00:00
Dr. Stephen Henson
42e10c3fd6 PR: 2803
Submitted by: jean-etienne.schwartz@bull.net

In OCSP_basic_varify return an error if X509_STORE_CTX_init fails.
2012-11-29 19:16:01 +00:00
Dr. Stephen Henson
c571a3e984 PR: 2908
Submitted by: Dmitry Belyavsky <beldmit@gmail.com>

Fix DH double free if parameter generation fails.
2012-11-21 14:01:38 +00:00
Dr. Stephen Henson
e55988bb60 correct docs 2012-11-19 20:07:23 +00:00
Dr. Stephen Henson
34b5ba3b60 PR: 2880
Submitted by: "Florian Rüchel" <florian.ruechel@ruhr-uni-bochum.de>

Correctly handle local machine keys in the capi ENGINE.
2012-11-18 15:20:40 +00:00
Andy Polyakov
629ac4b4ca aix[64]-cc: get MT support right [from HEAD].
PR: 2896
2012-10-16 08:22:55 +00:00
Bodo Möller
75f0bc4f44 Fix EC_KEY initialization race.
Submitted by: Adam Langley
2012-10-05 20:51:47 +00:00
Dr. Stephen Henson
71a2440ee5 backport OCSP fix enhancement 2012-10-05 13:02:31 +00:00
Ben Laurie
04e40739f7 Update CHANGES for OCSP fix. 2012-10-05 13:00:17 +00:00
Ben Laurie
48bcdad0d5 Backport OCSP fix. 2012-10-05 12:50:24 +00:00
Bodo Möller
f7d2402cab Fix Valgrind warning.
Submitted by: Adam Langley
2012-09-24 19:50:07 +00:00
Richard Levitte
808f55351a * Configure: make the debug-levitte-linux{elf,noasm} less extreme. 2012-09-24 18:49:09 +00:00
Richard Levitte
c06271bc35 * ssl/t1_enc.c (tls1_change_cipher_state): Stupid bug. Fortunately in
debugging code that's seldom used.
2012-09-21 13:08:32 +00:00
Dr. Stephen Henson
92e5882aca fix memory leak 2012-09-11 13:45:42 +00:00
Richard Levitte
afa0580cd5 Remove duplicate symbol in crypto/symhacks.h
Have the new names start in column 48, that makes it easy to see when
the 31 character limit is reached (on a 80 column display, do the math)
2012-07-05 09:06:20 +00:00
Dr. Stephen Henson
4baee3031c PR: 2813
Reported by: Constantine Sapuntzakis <csapuntz@gmail.com>

Fix possible deadlock when decoding public keys.
2012-05-11 13:49:15 +00:00
Dr. Stephen Henson
db7a72b224 prepare for next version 2012-05-10 16:01:11 +00:00
Dr. Stephen Henson
b71e69ad8e update FAQ 2012-05-10 14:38:52 +00:00
Dr. Stephen Henson
f856173c43 prepare for 0.9.8x release 2012-05-10 14:36:07 +00:00
Dr. Stephen Henson
d742f9ebbd update NEWS 2012-05-10 14:35:13 +00:00
Dr. Stephen Henson
36dd4cba3d Sanity check record length before skipping explicit IV in DTLS
to fix DoS attack.

Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
fuzzing as a service testing platform.
(CVE-2012-2333)
2012-05-10 14:33:11 +00:00
Dr. Stephen Henson
3978429ad5 Reported by: Solar Designer of Openwall
Make sure tkeylen is initialised properly when encrypting CMS messages.
2012-05-10 13:27:57 +00:00
Richard Levitte
885945d6e1 Correct environment variable is OPENSSL_ALLOW_PROXY_CERTS. 2012-05-04 10:43:17 +00:00
Dr. Stephen Henson
e22e770147 prepare for next version 2012-04-23 21:15:22 +00:00
Dr. Stephen Henson
e0c0203341 update STATUS 2012-04-23 21:03:04 +00:00
Dr. Stephen Henson
e1eec61e26 correct STATUS 2012-04-23 20:51:18 +00:00
Dr. Stephen Henson
296fa128c9 correct NEWS 2012-04-23 20:49:21 +00:00
Dr. Stephen Henson
6dde222aae prepare form 0.9.8w release 2012-04-23 20:45:29 +00:00
Dr. Stephen Henson
391ac37018 update NEWS 2012-04-23 20:43:35 +00:00
Dr. Stephen Henson
8d038a08fb The fix for CVE-2012-2110 did not take into account that the
'len' argument to BUF_MEM_grow and BUF_MEM_grow_clean is an
int in OpenSSL 0.9.8, making it still vulnerable. Fix by
rejecting negative len parameter.

Thanks to the many people who reported this bug and to Tomas Hoger
<thoger@redhat.com> for supplying the fix.
2012-04-23 20:35:55 +00:00
Dr. Stephen Henson
747c6ffda4 correct error code 2012-04-22 13:31:46 +00:00
Dr. Stephen Henson
d4cddc54f0 correct old FAQ answers, sync with HEAD 2012-04-22 13:22:38 +00:00
Dr. Stephen Henson
eb7112c18e prepare for next version 2012-04-19 17:03:28 +00:00
54 changed files with 2146 additions and 942 deletions

77
.gitignore vendored Normal file
View File

@@ -0,0 +1,77 @@
# Object files
*.o
# editor artefacts
*.swp
.#*
#*#
*~
# Top level excludes
/Makefile.bak
/Makefile
/*.a
/include
/*.pc
/rehash.time
# Most *.c files under test/ are symlinks
/test/*.c
# Apart from these
!/test/asn1test.c
!/test/methtest.c
!/test/dummytest.c
!/test/igetest.c
!/test/r160test.c
!/test/fips_algvs.c
/test/*.ss
/test/*.srl
/test/.rnd
/test/test*.pem
/test/newkey.pem
# Certificate symbolic links
*.0
# Links under apps
/apps/CA.pl
/apps/md4.c
# Auto generated headers
/crypto/buildinf.h
/crypto/opensslconf.h
# Auto generated assembly language source files
*.s
!/crypto/bn/asm/pa-risc2.s
!/crypto/bn/asm/pa-risc2W.s
# Executables
/apps/openssl
/test/sha256t
/test/sha512t
/test/*test
/test/fips_aesavs
/test/fips_desmovs
/test/fips_dhvs
/test/fips_drbgvs
/test/fips_dssvs
/test/fips_ecdhvs
/test/fips_ecdsavs
/test/fips_rngvs
/test/fips_test_suite
*.so*
*.dylib*
*.dll*
# Exceptions
!/test/bctest
!/crypto/des/times/486-50.sol
# Misc auto generated files
/tools/c_rehash
/test/evptests.txt
lib
Makefile.save
*.bak

51
CHANGES
View File

@@ -2,6 +2,57 @@
OpenSSL CHANGES
_______________
Changes between 0.9.8x and 0.9.8y [5 Feb 2013]
*) Make the decoding of SSLv3, TLS and DTLS CBC records constant time.
This addresses the flaw in CBC record processing discovered by
Nadhem Alfardan and Kenny Paterson. Details of this attack can be found
at: http://www.isg.rhul.ac.uk/tls/
Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
Security Group at Royal Holloway, University of London
(www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and
Emilia K<>sper for the initial patch.
(CVE-2013-0169)
[Emilia K<>sper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson]
*) Return an error when checking OCSP signatures when key is NULL.
This fixes a DoS attack. (CVE-2013-0166)
[Steve Henson]
*) Call OCSP Stapling callback after ciphersuite has been chosen, so
the right response is stapled. Also change SSL_get_certificate()
so it returns the certificate actually sent.
See http://rt.openssl.org/Ticket/Display.html?id=2836.
(This is a backport)
[Rob Stradling <rob.stradling@comodo.com>]
*) Fix possible deadlock when decoding public keys.
[Steve Henson]
Changes between 0.9.8w and 0.9.8x [10 May 2012]
*) Sanity check record length before skipping explicit IV in DTLS
to fix DoS attack.
Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
fuzzing as a service testing platform.
(CVE-2012-2333)
[Steve Henson]
*) Initialise tkeylen properly when encrypting CMS messages.
Thanks to Solar Designer of Openwall for reporting this issue.
[Steve Henson]
Changes between 0.9.8v and 0.9.8w [23 Apr 2012]
*) The fix for CVE-2012-2110 did not take into account that the
'len' argument to BUF_MEM_grow and BUF_MEM_grow_clean is an
int in OpenSSL 0.9.8, making it still vulnerable. Fix by
rejecting negative len parameter. (CVE-2012-2131)
[Tomas Hoger <thoger@redhat.com>]
Changes between 0.9.8u and 0.9.8v [19 Apr 2012]
*) Check for potentially exploitable overflows in asn1_d2i_read_bio

View File

@@ -162,6 +162,7 @@ my %table=(
"debug-ben-openbsd","gcc:-DBN_DEBUG -DREF_CHECK -DCONF_DEBUG -DBN_CTX_DEBUG -DCRYPTO_MDEBUG -DPEDANTIC -DDEBUG_SAFESTACK -DOPENSSL_OPENBSD_DEV_CRYPTO -DOPENSSL_NO_ASM -O2 -pedantic -Wall -Wshadow -Werror -pipe::(unknown)::::",
"debug-ben-openbsd-debug","gcc:-DBN_DEBUG -DREF_CHECK -DCONF_DEBUG -DBN_CTX_DEBUG -DCRYPTO_MDEBUG -DPEDANTIC -DDEBUG_SAFESTACK -DOPENSSL_OPENBSD_DEV_CRYPTO -DOPENSSL_NO_ASM -g3 -O2 -pedantic -Wall -Wshadow -Werror -pipe::(unknown)::::",
"debug-ben-debug", "gcc:$gcc_devteam_warn -DBN_DEBUG -DREF_CHECK -DCONF_DEBUG -DDEBUG_SAFESTACK -ggdb3 -O2 -pipe::(unknown)::::::",
"debug-ben-debug-64", "gcc:$gcc_devteam_warn -DBN_DEBUG -DCONF_DEBUG -DDEBUG_SAFESTACK -DDEBUG_UNUSED -g3 -O3 -pipe::${BSDthreads}:::SIXTY_FOUR_BIT_LONG RC4_CHUNK DES_INT DES_UNROLL:${x86_64_asm}:elf:dlfcn:bsd-gcc-shared:-fPIC::.so.\$(SHLIB_MAJOR).\$(SHLIB_MINOR)",
"debug-ben-debug-noopt", "gcc:$gcc_devteam_warn -DBN_DEBUG -DREF_CHECK -DCONF_DEBUG -DDEBUG_SAFESTACK -ggdb3 -pipe::(unknown)::::::",
"debug-ben-strict", "gcc:-DBN_DEBUG -DREF_CHECK -DCONF_DEBUG -DBN_CTX_DEBUG -DCRYPTO_MDEBUG -DCONST_STRICT -O2 -Wall -Wshadow -Werror -Wpointer-arith -Wcast-qual -Wwrite-strings -pipe::(unknown)::::::",
"debug-rse","cc:-DTERMIOS -DL_ENDIAN -pipe -O -g -ggdb3 -Wall::(unknown):::BN_LLONG ${x86_gcc_des} ${x86_gcc_opts}:${x86_elf_asm}",
@@ -172,10 +173,10 @@ my %table=(
"debug-steve-opt", "gcc:$gcc_devteam_warn -m64 -O3 -DL_ENDIAN -DTERMIO -DCONF_DEBUG -DDEBUG_SAFESTACK -g -DMD32_REG_T=int::-D_REENTRANT::-ldl:SIXTY_FOUR_BIT_LONG RC4_CHUNK DES_INT DES_UNROLL:${x86_64_asm}:dlfcn:linux-shared:-fPIC:-m64:.so.\$(SHLIB_MAJOR).\$(SHLIB_MINOR)",
"debug-steve", "gcc:-DL_ENDIAN -DREF_CHECK -DCONF_DEBUG -DDEBUG_SAFESTACK -DCRYPTO_MDEBUG_ALL -DPEDANTIC -m32 -g -pedantic -Wno-long-long -Wall -Werror -Wshadow -pipe::-D_REENTRANT::-rdynamic -ldl:BN_LLONG ${x86_gcc_des} ${x86_gcc_opts}:${x86_elf_asm}:dlfcn:linux-shared",
"debug-steve-linux-pseudo64", "gcc:-DL_ENDIAN -DREF_CHECK -DCONF_DEBUG -DBN_CTX_DEBUG -DDEBUG_SAFESTACK -DCRYPTO_MDEBUG_ALL -DOPENSSL_NO_ASM -g -mcpu=i486 -Wall -Werror -Wshadow -pipe::-D_REENTRANT::-rdynamic -ldl:SIXTY_FOUR_BIT:${no_asm}:dlfcn:linux-shared",
"debug-levitte-linux-elf","gcc:-DLEVITTE_DEBUG -DREF_CHECK -DCONF_DEBUG -DBN_DEBUG -DBN_DEBUG_RAND -DCRYPTO_MDEBUG -DENGINE_CONF_DEBUG -DL_ENDIAN -DTERMIO -D_POSIX_SOURCE -DPEDANTIC -ggdb -g3 -mcpu=i486 -pedantic -ansi -Wall -Wshadow -Wcast-align -Wstrict-prototypes -Wmissing-prototypes -Wno-long-long -Wundef -Wconversion -pipe::-D_REENTRANT::-ldl:BN_LLONG ${x86_gcc_des} ${x86_gcc_opts}:${x86_elf_asm}:dlfcn:linux-shared:-fPIC::.so.\$(SHLIB_MAJOR).\$(SHLIB_MINOR)",
"debug-levitte-linux-noasm","gcc:-DLEVITTE_DEBUG -DREF_CHECK -DCONF_DEBUG -DBN_DEBUG -DBN_DEBUG_RAND -DCRYPTO_MDEBUG -DENGINE_CONF_DEBUG -DOPENSSL_NO_ASM -DL_ENDIAN -DTERMIO -D_POSIX_SOURCE -DPEDANTIC -ggdb -g3 -mcpu=i486 -pedantic -ansi -Wall -Wshadow -Wcast-align -Wstrict-prototypes -Wmissing-prototypes -Wno-long-long -Wundef -Wconversion -pipe::-D_REENTRANT::-ldl:BN_LLONG ${x86_gcc_des} ${x86_gcc_opts}:${no_asm}:dlfcn:linux-shared:-fPIC::.so.\$(SHLIB_MAJOR).\$(SHLIB_MINOR)",
"debug-levitte-linux-elf-extreme","gcc:-DLEVITTE_DEBUG -DREF_CHECK -DCONF_DEBUG -DBN_DEBUG -DBN_DEBUG_RAND -DCRYPTO_MDEBUG -DENGINE_CONF_DEBUG -DL_ENDIAN -DTERMIO -D_POSIX_SOURCE -DPEDANTIC -ggdb -g3 -mcpu=i486 -pedantic -ansi -Wall -W -Wundef -Wshadow -Wcast-align -Wstrict-prototypes -Wmissing-prototypes -Wno-long-long -Wundef -Wconversion -pipe::-D_REENTRANT::-ldl:BN_LLONG ${x86_gcc_des} ${x86_gcc_opts}:${x86_elf_asm}:dlfcn:linux-shared:-fPIC::.so.\$(SHLIB_MAJOR).\$(SHLIB_MINOR)",
"debug-levitte-linux-noasm-extreme","gcc:-DLEVITTE_DEBUG -DREF_CHECK -DCONF_DEBUG -DBN_DEBUG -DBN_DEBUG_RAND -DCRYPTO_MDEBUG -DENGINE_CONF_DEBUG -DOPENSSL_NO_ASM -DL_ENDIAN -DTERMIO -D_POSIX_SOURCE -DPEDANTIC -ggdb -g3 -mcpu=i486 -pedantic -ansi -Wall -W -Wundef -Wshadow -Wcast-align -Wstrict-prototypes -Wmissing-prototypes -Wno-long-long -Wundef -Wconversion -pipe::-D_REENTRANT::-ldl:BN_LLONG ${x86_gcc_des} ${x86_gcc_opts}:${no_asm}:dlfcn:linux-shared:-fPIC::.so.\$(SHLIB_MAJOR).\$(SHLIB_MINOR)",
"debug-levitte-linux-elf","gcc:-DLEVITTE_DEBUG -DBN_DEBUG -DREF_CHECK -DCONF_DEBUG -DCRYPTO_MDEBUG -DL_ENDIAN -ggdb -g3 -Wall::-D_REENTRANT::-ldl:BN_LLONG ${x86_gcc_des} ${x86_gcc_opts}:${x86_elf_asm}:dlfcn:linux-shared:-fPIC::.so.\$(SHLIB_MAJOR).\$(SHLIB_MINOR)",
"debug-levitte-linux-noasm","gcc:-DLEVITTE_DEBUG -DBN_DEBUG -DREF_CHECK -DCONF_DEBUG -DCRYPTO_MDEBUG -DOPENSSL_NO_ASM -DL_ENDIAN -ggdb -g3 -Wall::-D_REENTRANT::-ldl:BN_LLONG ${x86_gcc_des} ${x86_gcc_opts}:${no_asm}:dlfcn:linux-shared:-fPIC::.so.\$(SHLIB_MAJOR).\$(SHLIB_MINOR)",
"debug-levitte-linux-elf-extreme","gcc:-DLEVITTE_DEBUG -DREF_CHECK -DCONF_DEBUG -DBN_DEBUG -DBN_DEBUG_RAND -DCRYPTO_MDEBUG -DENGINE_CONF_DEBUG -DL_ENDIAN -DTERMIO -DPEDANTIC -ggdb -g3 -pedantic -ansi -Wall -W -Wundef -Wshadow -Wcast-align -Wstrict-prototypes -Wmissing-prototypes -Wno-long-long -Wundef -Wconversion -pipe::-D_REENTRANT::-ldl:BN_LLONG ${x86_gcc_des} ${x86_gcc_opts}:${x86_elf_asm}:dlfcn:linux-shared:-fPIC::.so.\$(SHLIB_MAJOR).\$(SHLIB_MINOR)",
"debug-levitte-linux-noasm-extreme","gcc:-DLEVITTE_DEBUG -DREF_CHECK -DCONF_DEBUG -DBN_DEBUG -DBN_DEBUG_RAND -DCRYPTO_MDEBUG -DENGINE_CONF_DEBUG -DOPENSSL_NO_ASM -DL_ENDIAN -DTERMIO -DPEDANTIC -ggdb -g3 -pedantic -ansi -Wall -W -Wundef -Wshadow -Wcast-align -Wstrict-prototypes -Wmissing-prototypes -Wno-long-long -Wundef -Wconversion -pipe::-D_REENTRANT::-ldl:BN_LLONG ${x86_gcc_des} ${x86_gcc_opts}:${no_asm}:dlfcn:linux-shared:-fPIC::.so.\$(SHLIB_MAJOR).\$(SHLIB_MINOR)",
"debug-geoff","gcc:-DBN_DEBUG -DBN_DEBUG_RAND -DBN_STRICT -DPURIFY -DOPENSSL_NO_DEPRECATED -DOPENSSL_NO_ASM -DOPENSSL_NO_INLINE_ASM -DL_ENDIAN -DTERMIO -DPEDANTIC -O1 -ggdb2 -Wall -Werror -Wundef -pedantic -Wshadow -Wpointer-arith -Wbad-function-cast -Wcast-align -Wsign-compare -Wmissing-prototypes -Wmissing-declarations -Wno-long-long::-D_REENTRANT::-ldl:BN_LLONG ${x86_gcc_des} ${x86_gcc_opts}:${no_asm}:dlfcn:linux-shared:-fPIC::.so.\$(SHLIB_MAJOR).\$(SHLIB_MINOR)",
"debug-linux-pentium","gcc:-DBN_DEBUG -DREF_CHECK -DCONF_DEBUG -DCRYPTO_MDEBUG -DL_ENDIAN -DTERMIO -g -mcpu=pentium -Wall::-D_REENTRANT::-ldl:BN_LLONG ${x86_gcc_des} ${x86_gcc_opts}:${x86_elf_asm}:dlfcn",
"debug-linux-ppro","gcc:-DBN_DEBUG -DREF_CHECK -DCONF_DEBUG -DCRYPTO_MDEBUG -DL_ENDIAN -DTERMIO -g -mcpu=pentiumpro -Wall::-D_REENTRANT::-ldl:BN_LLONG ${x86_gcc_des} ${x86_gcc_opts}:${x86_elf_asm}:dlfcn",
@@ -428,8 +429,8 @@ my %table=(
"aix64-gcc","gcc:-maix64 -O -DB_ENDIAN::-pthread:AIX::SIXTY_FOUR_BIT_LONG RC4_CHAR::aix_ppc64.o::::::::::dlfcn:aix-shared::-maix64 -shared -Wl,-G:.so.\$(SHLIB_MAJOR).\$(SHLIB_MINOR)::-X64",
# Below targets assume AIX 5. Idea is to effectively disregard $OBJECT_MODE
# at build time. $OBJECT_MODE is respected at ./config stage!
"aix-cc", "cc:-q32 -O -DB_ENDIAN -qmaxmem=16384 -qro -qroconst::-qthreaded:AIX::BN_LLONG RC4_CHAR::aix_ppc32.o::::::::::dlfcn:aix-shared::-q32 -G:.so.\$(SHLIB_MAJOR).\$(SHLIB_MINOR)::-X 32",
"aix64-cc", "cc:-q64 -O -DB_ENDIAN -qmaxmem=16384 -qro -qroconst::-qthreaded:AIX::SIXTY_FOUR_BIT_LONG RC4_CHAR::aix_ppc64.o::::::::::dlfcn:aix-shared::-q64 -G:.so.\$(SHLIB_MAJOR).\$(SHLIB_MINOR)::-X 64",
"aix-cc", "cc:-q32 -O -DB_ENDIAN -qmaxmem=16384 -qro -qroconst::-qthreaded -D_THREAD_SAFE:AIX::BN_LLONG RC4_CHAR::aix_ppc32.o::::::::::dlfcn:aix-shared::-q32 -G:.so.\$(SHLIB_MAJOR).\$(SHLIB_MINOR)::-X 32",
"aix64-cc", "cc:-q64 -O -DB_ENDIAN -qmaxmem=16384 -qro -qroconst::-qthreaded -D_THREAD_SAFE:AIX::SIXTY_FOUR_BIT_LONG RC4_CHAR::aix_ppc64.o::::::::::dlfcn:aix-shared::-q64 -G:.so.\$(SHLIB_MAJOR).\$(SHLIB_MINOR)::-X 64",
#
# Cray T90 and similar (SDSC)

22
FAQ
View File

@@ -10,6 +10,7 @@ OpenSSL - Frequently Asked Questions
* Why aren't tools like 'autoconf' and 'libtool' used?
* What is an 'engine' version?
* How do I check the authenticity of the OpenSSL distribution?
* How does the versioning scheme work?
[LEGAL] Legal questions
@@ -82,7 +83,7 @@ OpenSSL - Frequently Asked Questions
* Which is the current version of OpenSSL?
The current version is available from <URL: http://www.openssl.org>.
OpenSSL 1.0.0i was released on Apr 19th, 2012.
OpenSSL 1.0.1d was released on Feb 5th, 2013.
In addition to the current stable release, you can also access daily
snapshots of the OpenSSL development version at <URL:
@@ -108,7 +109,9 @@ In addition, you can read the most current versions at
<URL: http://www.openssl.org/docs/>. Note that the online documents refer
to the very latest development versions of OpenSSL and may include features
not present in released versions. If in doubt refer to the documentation
that came with the version of OpenSSL you are using.
that came with the version of OpenSSL you are using. The pod format
documentation is included in each OpenSSL distribution under the docs
directory.
For information on parts of libcrypto that are not yet documented, you
might want to read Ariel Glenn's documentation on SSLeay 0.9, OpenSSL's
@@ -173,6 +176,19 @@ just do:
pgp TARBALL.asc
* How does the versioning scheme work?
After the release of OpenSSL 1.0.0 the versioning scheme changed. Letter
releases (e.g. 1.0.1a) can only contain bug and security fixes and no
new features. Minor releases change the last number (e.g. 1.0.2) and
can contain new features that retain binary compatibility. Changes to
the middle number are considered major releases and neither source nor
binary compatibility is guaranteed.
Therefore the answer to the common question "when will feature X be
backported to OpenSSL 1.0.0/0.9.8?" is "never" but it could appear
in the next minor release.
[LEGAL] =======================================================================
* Do I need patent licenses to use OpenSSL?
@@ -284,7 +300,7 @@ current directory in this case, but this has changed with 0.9.6a.)
Check out the CA.pl(1) manual page. This provides a simple wrapper round
the 'req', 'verify', 'ca' and 'pkcs12' utilities. For finer control check
out the manual pages for the individual utilities and the certificate
extensions documentation (currently in doc/openssl.txt).
extensions documentation (in ca(1), req(1), x509v3_config(5) )
* Why can't I create certificate requests?

13
NEWS
View File

@@ -5,6 +5,19 @@
This file gives a brief overview of the major changes between each OpenSSL
release. For more details please read the CHANGES file.
Major changes between OpenSSL 0.9.8x and OpenSSL 0.9.8y:
o Fix for SSL/TLS/DTLS CBC plaintext recovery attack CVE-2013-0169
o Fix OCSP bad key DoS attack CVE-2013-0166
Major changes between OpenSSL 0.9.8w and OpenSSL 0.9.8x:
o Fix DTLS record length checking bug CVE-2012-2333
Major changes between OpenSSL 0.9.8v and OpenSSL 0.9.8w:
o Fix for CVE-2012-2131 (corrected fix for 0.9.8 and CVE-2012-2110)
Major changes between OpenSSL 0.9.8u and OpenSSL 0.9.8v:
o Fix for ASN1 overflow bug CVE-2012-2110

2
README
View File

@@ -1,5 +1,5 @@
OpenSSL 0.9.8v 19 Apr 2012
OpenSSL 0.9.8y 5 Feb 2013
Copyright (c) 1998-2011 The OpenSSL Project
Copyright (c) 1995-1998 Eric A. Young, Tim J. Hudson

10
STATUS
View File

@@ -1,16 +1,24 @@
OpenSSL STATUS Last modified at
______________ $Date: 2012/04/19 11:39:02 $
______________ $Date: 2012/05/10 14:36:07 $
DEVELOPMENT STATE
o OpenSSL 1.1.0: Under development...
o OpenSSL 1.0.1: Under development...
o OpenSSL 1.0.0i: Released on April 19th, 2012
o OpenSSL 1.0.0h: Released on March 12th, 2012
o OpenSSL 1.0.0g: Released on January 18th, 2012
o OpenSSL 1.0.0f: Released on January 4th, 2012
o OpenSSL 1.0.0e: Released on September 6th, 2011
o OpenSSL 1.0.0d: Released on February 8nd, 2011
o OpenSSL 1.0.0c: Released on December 2nd, 2010
o OpenSSL 1.0.0b: Released on November 16th, 2010
o OpenSSL 1.0.0a: Released on June 1st, 2010
o OpenSSL 1.0.0: Released on March 29th, 2010
o OpenSSL 0.9.8y: Released on February 5th, 2013
o OpenSSL 0.9.8x: Released on May 10th, 2012
o OpenSSL 0.9.8w: Released on April 23rd, 2012
o OpenSSL 0.9.8v: Released on April 19th, 2012
o OpenSSL 0.9.8u: Released on March 12th, 2012
o OpenSSL 0.9.8t: Released on January 18th, 2012

12
TABLE
View File

@@ -733,7 +733,7 @@ $arflags =
$cc = cc
$cflags = -q32 -O -DB_ENDIAN -qmaxmem=16384 -qro -qroconst
$unistd =
$thread_cflag = -qthreaded
$thread_cflag = -qthreaded -D_THREAD_SAFE
$sys_id = AIX
$lflags =
$bn_ops = BN_LLONG RC4_CHAR
@@ -814,7 +814,7 @@ $arflags =
$cc = cc
$cflags = -q64 -O -DB_ENDIAN -qmaxmem=16384 -qro -qroconst
$unistd =
$thread_cflag = -qthreaded
$thread_cflag = -qthreaded -D_THREAD_SAFE
$sys_id = AIX
$lflags =
$bn_ops = SIXTY_FOUR_BIT_LONG RC4_CHAR
@@ -1487,7 +1487,7 @@ $arflags =
*** debug-levitte-linux-elf
$cc = gcc
$cflags = -DLEVITTE_DEBUG -DREF_CHECK -DCONF_DEBUG -DBN_DEBUG -DBN_DEBUG_RAND -DCRYPTO_MDEBUG -DENGINE_CONF_DEBUG -DL_ENDIAN -DTERMIO -D_POSIX_SOURCE -DPEDANTIC -ggdb -g3 -mcpu=i486 -pedantic -ansi -Wall -Wshadow -Wcast-align -Wstrict-prototypes -Wmissing-prototypes -Wno-long-long -Wundef -Wconversion -pipe
$cflags = -DLEVITTE_DEBUG -DBN_DEBUG -DREF_CHECK -DCONF_DEBUG -DCRYPTO_MDEBUG -DL_ENDIAN -ggdb -g3 -Wall
$unistd =
$thread_cflag = -D_REENTRANT
$sys_id =
@@ -1514,7 +1514,7 @@ $arflags =
*** debug-levitte-linux-elf-extreme
$cc = gcc
$cflags = -DLEVITTE_DEBUG -DREF_CHECK -DCONF_DEBUG -DBN_DEBUG -DBN_DEBUG_RAND -DCRYPTO_MDEBUG -DENGINE_CONF_DEBUG -DL_ENDIAN -DTERMIO -D_POSIX_SOURCE -DPEDANTIC -ggdb -g3 -mcpu=i486 -pedantic -ansi -Wall -W -Wundef -Wshadow -Wcast-align -Wstrict-prototypes -Wmissing-prototypes -Wno-long-long -Wundef -Wconversion -pipe
$cflags = -DLEVITTE_DEBUG -DREF_CHECK -DCONF_DEBUG -DBN_DEBUG -DBN_DEBUG_RAND -DCRYPTO_MDEBUG -DENGINE_CONF_DEBUG -DL_ENDIAN -DTERMIO -DPEDANTIC -ggdb -g3 -pedantic -ansi -Wall -W -Wundef -Wshadow -Wcast-align -Wstrict-prototypes -Wmissing-prototypes -Wno-long-long -Wundef -Wconversion -pipe
$unistd =
$thread_cflag = -D_REENTRANT
$sys_id =
@@ -1541,7 +1541,7 @@ $arflags =
*** debug-levitte-linux-noasm
$cc = gcc
$cflags = -DLEVITTE_DEBUG -DREF_CHECK -DCONF_DEBUG -DBN_DEBUG -DBN_DEBUG_RAND -DCRYPTO_MDEBUG -DENGINE_CONF_DEBUG -DOPENSSL_NO_ASM -DL_ENDIAN -DTERMIO -D_POSIX_SOURCE -DPEDANTIC -ggdb -g3 -mcpu=i486 -pedantic -ansi -Wall -Wshadow -Wcast-align -Wstrict-prototypes -Wmissing-prototypes -Wno-long-long -Wundef -Wconversion -pipe
$cflags = -DLEVITTE_DEBUG -DBN_DEBUG -DREF_CHECK -DCONF_DEBUG -DCRYPTO_MDEBUG -DOPENSSL_NO_ASM -DL_ENDIAN -ggdb -g3 -Wall
$unistd =
$thread_cflag = -D_REENTRANT
$sys_id =
@@ -1568,7 +1568,7 @@ $arflags =
*** debug-levitte-linux-noasm-extreme
$cc = gcc
$cflags = -DLEVITTE_DEBUG -DREF_CHECK -DCONF_DEBUG -DBN_DEBUG -DBN_DEBUG_RAND -DCRYPTO_MDEBUG -DENGINE_CONF_DEBUG -DOPENSSL_NO_ASM -DL_ENDIAN -DTERMIO -D_POSIX_SOURCE -DPEDANTIC -ggdb -g3 -mcpu=i486 -pedantic -ansi -Wall -W -Wundef -Wshadow -Wcast-align -Wstrict-prototypes -Wmissing-prototypes -Wno-long-long -Wundef -Wconversion -pipe
$cflags = -DLEVITTE_DEBUG -DREF_CHECK -DCONF_DEBUG -DBN_DEBUG -DBN_DEBUG_RAND -DCRYPTO_MDEBUG -DENGINE_CONF_DEBUG -DOPENSSL_NO_ASM -DL_ENDIAN -DTERMIO -DPEDANTIC -ggdb -g3 -pedantic -ansi -Wall -W -Wundef -Wshadow -Wcast-align -Wstrict-prototypes -Wmissing-prototypes -Wno-long-long -Wundef -Wconversion -pipe
$unistd =
$thread_cflag = -D_REENTRANT
$sys_id =

File diff suppressed because it is too large Load Diff

View File

@@ -2052,7 +2052,7 @@ X509_NAME *parse_name(char *subject, long chtype, int multirdn)
X509_NAME *n = NULL;
int nid;
if (!buf || !ne_types || !ne_values)
if (!buf || !ne_types || !ne_values || !mval)
{
BIO_printf(bio_err, "malloc error\n");
goto error;
@@ -2156,6 +2156,7 @@ X509_NAME *parse_name(char *subject, long chtype, int multirdn)
OPENSSL_free(ne_values);
OPENSSL_free(ne_types);
OPENSSL_free(buf);
OPENSSL_free(mval);
return n;
error:
@@ -2164,6 +2165,8 @@ error:
OPENSSL_free(ne_values);
if (ne_types)
OPENSSL_free(ne_types);
if (mval)
OPENSSL_free(mval);
if (buf)
OPENSSL_free(buf);
return NULL;

View File

@@ -332,7 +332,6 @@ bad:
BIO_printf(bio_err,"This is going to take a long time\n");
if(!dh || !DH_generate_parameters_ex(dh, num, g, &cb))
{
if(dh) DH_free(dh);
ERR_print_errors(bio_err);
goto end;
}

View File

@@ -1550,6 +1550,12 @@ end:
if (dpass)
OPENSSL_free(dpass);
#ifndef OPENSSL_NO_TLSEXT
if (tlscstatp.host)
OPENSSL_free(tlscstatp.host);
if (tlscstatp.port)
OPENSSL_free(tlscstatp.port);
if (tlscstatp.path)
OPENSSL_free(tlscstatp.path);
if (ctx2 != NULL) SSL_CTX_free(ctx2);
if (s_cert2)
X509_free(s_cert2);

View File

@@ -567,6 +567,7 @@ int ASN1_STRING_to_UTF8(unsigned char **out, ASN1_STRING *in)
if(mbflag == -1) return -1;
mbflag |= MBSTRING_FLAG;
stmp.data = NULL;
stmp.length = 0;
ret = ASN1_mbstring_copy(&str, in->data, in->length, mbflag, B_ASN1_UTF8STRING);
if(ret < 0) return ret;
*out = stmp.data;

View File

@@ -138,6 +138,12 @@ int ASN1_item_verify(const ASN1_ITEM *it, X509_ALGOR *a, ASN1_BIT_STRING *signat
unsigned char *buf_in=NULL;
int ret= -1,i,inl;
if (!pkey)
{
ASN1err(ASN1_F_ASN1_ITEM_VERIFY, ERR_R_PASSED_NULL_PARAMETER);
return -1;
}
EVP_MD_CTX_init(&ctx);
i=OBJ_obj2nid(a->algorithm);
type=EVP_get_digestbyname(OBJ_nid2sn(i));

View File

@@ -371,12 +371,15 @@ EVP_PKEY *X509_PUBKEY_get(X509_PUBKEY *key)
CRYPTO_w_lock(CRYPTO_LOCK_EVP_PKEY);
if (key->pkey)
{
CRYPTO_w_unlock(CRYPTO_LOCK_EVP_PKEY);
EVP_PKEY_free(ret);
ret = key->pkey;
}
else
{
key->pkey = ret;
CRYPTO_w_unlock(CRYPTO_LOCK_EVP_PKEY);
CRYPTO_w_unlock(CRYPTO_LOCK_EVP_PKEY);
}
CRYPTO_add(&ret->references, 1, CRYPTO_LOCK_EVP_PKEY);
return(ret);
err:

View File

@@ -144,26 +144,17 @@ int BN_add_word(BIGNUM *a, BN_ULONG w)
a->neg=!(a->neg);
return(i);
}
/* Only expand (and risk failing) if it's possibly necessary */
if (((BN_ULONG)(a->d[a->top - 1] + 1) == 0) &&
(bn_wexpand(a,a->top+1) == NULL))
return(0);
i=0;
for (;;)
for (i=0;w!=0 && i<a->top;i++)
{
if (i >= a->top)
l=w;
else
l=(a->d[i]+w)&BN_MASK2;
a->d[i]=l;
if (w > l)
w=1;
else
break;
i++;
a->d[i] = l = (a->d[i]+w)&BN_MASK2;
w = (w>l)?1:0;
}
if (i >= a->top)
if (w && i==a->top)
{
if (bn_wexpand(a,a->top+1) == NULL) return 0;
a->top++;
a->d[i]=w;
}
bn_check_top(a);
return(1);
}

View File

@@ -99,6 +99,11 @@ int BUF_MEM_grow(BUF_MEM *str, int len)
char *ret;
unsigned int n;
if (len < 0)
{
BUFerr(BUF_F_BUF_MEM_GROW,ERR_R_MALLOC_FAILURE);
return 0;
}
if (str->length >= len)
{
str->length=len;
@@ -141,6 +146,11 @@ int BUF_MEM_grow_clean(BUF_MEM *str, int len)
char *ret;
unsigned int n;
if (len < 0)
{
BUFerr(BUF_F_BUF_MEM_GROW_CLEAN,ERR_R_MALLOC_FAILURE);
return 0;
}
if (str->length >= len)
{
memset(&str->data[len],0,str->length-len);
@@ -156,7 +166,7 @@ int BUF_MEM_grow_clean(BUF_MEM *str, int len)
/* This limit is sufficient to ensure (len+3)/3*4 < 2**31 */
if (len > LIMIT_BEFORE_EXPANSION)
{
BUFerr(BUF_F_BUF_MEM_GROW,ERR_R_MALLOC_FAILURE);
BUFerr(BUF_F_BUF_MEM_GROW_CLEAN,ERR_R_MALLOC_FAILURE);
return 0;
}
n=(len+3)/3*4;

View File

@@ -58,7 +58,9 @@
#include <openssl/err.h>
#include <openssl/cms.h>
#include <openssl/bio.h>
#ifndef OPENSSL_NO_COMP
#include <openssl/comp.h>
#endif
#include "cms_lcl.h"
DECLARE_ASN1_ITEM(CMS_CompressedData)

View File

@@ -139,10 +139,10 @@ BIO *cms_EncryptedContent_init_bio(CMS_EncryptedContentInfo *ec)
CMS_R_CIPHER_PARAMETER_INITIALISATION_ERROR);
goto err;
}
tkeylen = EVP_CIPHER_CTX_key_length(ctx);
/* Generate random session key */
if (!enc || !ec->key)
{
tkeylen = EVP_CIPHER_CTX_key_length(ctx);
tkey = OPENSSL_malloc(tkeylen);
if (!tkey)
{
@@ -174,7 +174,7 @@ BIO *cms_EncryptedContent_init_bio(CMS_EncryptedContentInfo *ec)
/* Only reveal failure if debugging so we don't
* leak information which may be useful in MMA.
*/
if (ec->debug)
if (enc || ec->debug)
{
CMSerr(CMS_F_CMS_ENCRYPTEDCONTENT_INIT_BIO,
CMS_R_INVALID_KEY_LENGTH);

View File

@@ -542,3 +542,19 @@ void OpenSSLDie(const char *file,int line,const char *assertion)
}
void *OPENSSL_stderr(void) { return stderr; }
#ifndef OPENSSL_FIPS
int CRYPTO_memcmp(const void *in_a, const void *in_b, size_t len)
{
size_t i;
const unsigned char *a = in_a;
const unsigned char *b = in_b;
unsigned char x = 0;
for (i = 0; i < len; i++)
x |= a[i] ^ b[i];
return x;
}
#endif

View File

@@ -591,6 +591,13 @@ int OPENSSL_isservice(void);
#define OPENSSL_HAVE_INIT 1
void OPENSSL_init(void);
/* CRYPTO_memcmp returns zero iff the |len| bytes at |a| and |b| are equal. It
* takes an amount of time dependent on |len|, but independent of the contents
* of |a| and |b|. Unlike memcmp, it cannot be used to put elements into a
* defined order as the return value when a != b is undefined, other than to be
* non-zero. */
int CRYPTO_memcmp(const void *a, const void *b, size_t len);
/* BEGIN ERROR CODES */
/* The following lines are auto generated by the script mkerr.pl. Any changes
* made after this point may be overwritten when the script is next run.

View File

@@ -321,7 +321,15 @@ void EC_KEY_set_conv_form(EC_KEY *, point_conversion_form_t);
/* functions to set/get method specific data */
void *EC_KEY_get_key_method_data(EC_KEY *,
void *(*dup_func)(void *), void (*free_func)(void *), void (*clear_free_func)(void *));
void EC_KEY_insert_key_method_data(EC_KEY *, void *data,
/** Sets the key method data of an EC_KEY object, if none has yet been set.
* \param key EC_KEY object
* \param data opaque data to install.
* \param dup_func a function that duplicates |data|.
* \param free_func a function that frees |data|.
* \param clear_free_func a function that wipes and frees |data|.
* \return the previously set data pointer, or NULL if |data| was inserted.
*/
void *EC_KEY_insert_key_method_data(EC_KEY *key, void *data,
void *(*dup_func)(void *), void (*free_func)(void *), void (*clear_free_func)(void *));
/* wrapper functions for the underlying EC_GROUP object */
void EC_KEY_set_asn1_flag(EC_KEY *, int);

View File

@@ -435,18 +435,27 @@ void EC_KEY_set_conv_form(EC_KEY *key, point_conversion_form_t cform)
void *EC_KEY_get_key_method_data(EC_KEY *key,
void *(*dup_func)(void *), void (*free_func)(void *), void (*clear_free_func)(void *))
{
return EC_EX_DATA_get_data(key->method_data, dup_func, free_func, clear_free_func);
void *ret;
CRYPTO_r_lock(CRYPTO_LOCK_EC);
ret = EC_EX_DATA_get_data(key->method_data, dup_func, free_func, clear_free_func);
CRYPTO_r_unlock(CRYPTO_LOCK_EC);
return ret;
}
void EC_KEY_insert_key_method_data(EC_KEY *key, void *data,
void *EC_KEY_insert_key_method_data(EC_KEY *key, void *data,
void *(*dup_func)(void *), void (*free_func)(void *), void (*clear_free_func)(void *))
{
EC_EXTRA_DATA *ex_data;
CRYPTO_w_lock(CRYPTO_LOCK_EC);
ex_data = EC_EX_DATA_get_data(key->method_data, dup_func, free_func, clear_free_func);
if (ex_data == NULL)
EC_EX_DATA_set_data(&key->method_data, data, dup_func, free_func, clear_free_func);
CRYPTO_w_unlock(CRYPTO_LOCK_EC);
return ex_data;
}
void EC_KEY_set_asn1_flag(EC_KEY *key, int flag)

View File

@@ -205,8 +205,15 @@ ECDH_DATA *ecdh_check(EC_KEY *key)
ecdh_data = (ECDH_DATA *)ecdh_data_new();
if (ecdh_data == NULL)
return NULL;
EC_KEY_insert_key_method_data(key, (void *)ecdh_data,
ecdh_data_dup, ecdh_data_free, ecdh_data_free);
data = EC_KEY_insert_key_method_data(key, (void *)ecdh_data,
ecdh_data_dup, ecdh_data_free, ecdh_data_free);
if (data != NULL)
{
/* Another thread raced us to install the key_method
* data and won. */
ecdh_data_free(ecdh_data);
ecdh_data = (ECDH_DATA *)data;
}
}
else
ecdh_data = (ECDH_DATA *)data;

View File

@@ -188,8 +188,15 @@ ECDSA_DATA *ecdsa_check(EC_KEY *key)
ecdsa_data = (ECDSA_DATA *)ecdsa_data_new();
if (ecdsa_data == NULL)
return NULL;
EC_KEY_insert_key_method_data(key, (void *)ecdsa_data,
ecdsa_data_dup, ecdsa_data_free, ecdsa_data_free);
data = EC_KEY_insert_key_method_data(key, (void *)ecdsa_data,
ecdsa_data_dup, ecdsa_data_free, ecdsa_data_free);
if (data != NULL)
{
/* Another thread raced us to install the key_method
* data and won. */
ecdsa_data_free(ecdsa_data);
ecdsa_data = (ECDSA_DATA *)data;
}
}
else
ecdsa_data = (ECDSA_DATA *)data;

View File

@@ -104,7 +104,9 @@
#ifndef OPENSSL_NO_JPAKE
#include <openssl/jpake.h>
#endif
#ifndef OPENSSL_NO_COMP
#include <openssl/comp.h>
#endif
void ERR_load_crypto_strings(void)
{

View File

@@ -93,4 +93,18 @@ void OPENSSL_init(void)
#endif
}
#ifdef OPENSSL_FIPS
int CRYPTO_memcmp(const void *in_a, const void *in_b, size_t len)
{
size_t i;
const unsigned char *a = in_a;
const unsigned char *b = in_b;
unsigned char x = 0;
for (i = 0; i < len; i++)
x |= a[i] ^ b[i];
return x;
}
#endif

View File

@@ -91,9 +91,12 @@ int OCSP_basic_verify(OCSP_BASICRESP *bs, STACK_OF(X509) *certs,
{
EVP_PKEY *skey;
skey = X509_get_pubkey(signer);
ret = OCSP_BASICRESP_verify(bs, skey, 0);
EVP_PKEY_free(skey);
if(ret <= 0)
if (skey)
{
ret = OCSP_BASICRESP_verify(bs, skey, 0);
EVP_PKEY_free(skey);
}
if(!skey || ret <= 0)
{
OCSPerr(OCSP_F_OCSP_BASIC_VERIFY, OCSP_R_SIGNATURE_FAILURE);
goto end;
@@ -108,6 +111,7 @@ int OCSP_basic_verify(OCSP_BASICRESP *bs, STACK_OF(X509) *certs,
init_res = X509_STORE_CTX_init(&ctx, st, signer, bs->certs);
if(!init_res)
{
ret = -1;
OCSPerr(OCSP_F_OCSP_BASIC_VERIFY,ERR_R_X509_LIB);
goto end;
}

View File

@@ -25,11 +25,11 @@
* (Prior to 0.9.5a beta1, a different scheme was used: MMNNFFRBB for
* major minor fix final patch/beta)
*/
#define OPENSSL_VERSION_NUMBER 0x0090816fL
#define OPENSSL_VERSION_NUMBER 0x0090819fL
#ifdef OPENSSL_FIPS
#define OPENSSL_VERSION_TEXT "OpenSSL 0.9.8v-fips 19 Apr 2012"
#define OPENSSL_VERSION_TEXT "OpenSSL 0.9.8y-fips 5 Feb 2013"
#else
#define OPENSSL_VERSION_TEXT "OpenSSL 0.9.8v 19 Apr 2012"
#define OPENSSL_VERSION_TEXT "OpenSSL 0.9.8y 5 Feb 2013"
#endif
#define OPENSSL_VERSION_PTEXT " part of " OPENSSL_VERSION_TEXT

View File

@@ -143,7 +143,7 @@ int RSA_padding_check_PKCS1_OAEP(unsigned char *to, int tlen,
EVP_Digest((void *)param, plen, phash, NULL, EVP_sha1(), NULL);
if (memcmp(db, phash, SHA_DIGEST_LENGTH) != 0 || bad)
if (CRYPTO_memcmp(db, phash, SHA_DIGEST_LENGTH) != 0 || bad)
goto decoding_err;
else
{

View File

@@ -252,15 +252,15 @@
#define EC_POINT_set_compressed_coordinates_GF2m \
EC_POINT_set_compr_coords_GF2m
#undef ec_GF2m_simple_group_clear_finish
#define ec_GF2m_simple_group_clear_finish ec_GF2m_simple_grp_clr_finish
#define ec_GF2m_simple_group_clear_finish ec_GF2m_simple_grp_clr_finish
#undef ec_GF2m_simple_group_check_discriminant
#define ec_GF2m_simple_group_check_discriminant ec_GF2m_simple_grp_chk_discrim
#undef ec_GF2m_simple_point_clear_finish
#define ec_GF2m_simple_point_clear_finish ec_GF2m_simple_pt_clr_finish
#define ec_GF2m_simple_point_clear_finish ec_GF2m_simple_pt_clr_finish
#undef ec_GF2m_simple_point_set_to_infinity
#define ec_GF2m_simple_point_set_to_infinity ec_GF2m_simple_pt_set_to_inf
#define ec_GF2m_simple_point_set_to_infinity ec_GF2m_simple_pt_set_to_inf
#undef ec_GF2m_simple_points_make_affine
#define ec_GF2m_simple_points_make_affine ec_GF2m_simple_pts_make_affine
#define ec_GF2m_simple_points_make_affine ec_GF2m_simple_pts_make_affine
#undef ec_GF2m_simple_point_set_affine_coordinates
#define ec_GF2m_simple_point_set_affine_coordinates \
ec_GF2m_smp_pt_set_af_coords
@@ -288,8 +288,6 @@
#define ec_GFp_simple_point_set_to_infinity ec_GFp_simple_pt_set_to_inf
#undef ec_GFp_simple_points_make_affine
#define ec_GFp_simple_points_make_affine ec_GFp_simple_pts_make_affine
#undef ec_GFp_simple_group_get_curve_GFp
#define ec_GFp_simple_group_get_curve_GFp ec_GFp_simple_grp_get_curve_GFp
#undef ec_GFp_simple_set_Jprojective_coordinates_GFp
#define ec_GFp_simple_set_Jprojective_coordinates_GFp \
ec_GFp_smp_set_Jproj_coords_GFp

View File

@@ -57,7 +57,7 @@ following methods:
- in all other cases, proxy certificate validation can be enabled
before starting the application by setting the envirnoment variable
OPENSSL_ALLOW_PROXY with some non-empty value.
OPENSSL_ALLOW_PROXY_CERTS with some non-empty value.
There are thoughts to allow proxy certificates with a line in the
default openssl.cnf, but that's still in the future.

View File

@@ -39,13 +39,13 @@ prints a usage message.
=item B<-newcert>
creates a new self signed certificate. The private key and certificate are
written to the file "newreq.pem".
creates a new self signed certificate. The private key is written to the file
"newkey.pem" and the request written to the file "newreq.pem".
=item B<-newreq>
creates a new certificate request. The private key and request are
written to the file "newreq.pem".
creates a new certificate request. The private key is written to the file
"newkey.pem" and the request written to the file "newreq.pem".
=item B<-newreq-nodes>

View File

@@ -1409,10 +1409,13 @@ static PCCERT_CONTEXT capi_find_cert(CAPI_CTX *ctx, const char *id, HCERTSTORE h
static CAPI_KEY *capi_get_key(CAPI_CTX *ctx, const char *contname, char *provname, DWORD ptype, DWORD keyspec)
{
CAPI_KEY *key;
DWORD dwFlags = 0;
key = OPENSSL_malloc(sizeof(CAPI_KEY));
CAPI_trace(ctx, "capi_get_key, contname=%s, provname=%s, type=%d\n",
contname, provname, ptype);
if (!CryptAcquireContextA(&key->hprov, contname, provname, ptype, 0))
if(ctx->store_flags & CERT_SYSTEM_STORE_LOCAL_MACHINE)
dwFlags = CRYPT_MACHINE_KEYSET;
if (!CryptAcquireContextA(&key->hprov, contname, provname, ptype, dwFlags))
{
CAPIerr(CAPI_F_CAPI_GET_KEY, CAPI_R_CRYPTACQUIRECONTEXT_ERROR);
capi_addlasterror();

View File

@@ -2,7 +2,7 @@
%define libmaj 0
%define libmin 9
%define librel 8
%define librev v
%define librev y
Release: 1
%define openssldir /var/ssl

View File

@@ -22,7 +22,7 @@ LIB=$(TOP)/libssl.a
SHARED_LIB= libssl$(SHLIB_EXT)
LIBSRC= \
s2_meth.c s2_srvr.c s2_clnt.c s2_lib.c s2_enc.c s2_pkt.c \
s3_meth.c s3_srvr.c s3_clnt.c s3_lib.c s3_enc.c s3_pkt.c s3_both.c \
s3_meth.c s3_srvr.c s3_clnt.c s3_lib.c s3_enc.c s3_pkt.c s3_both.c s3_cbc.c \
s23_meth.c s23_srvr.c s23_clnt.c s23_lib.c s23_pkt.c \
t1_meth.c t1_srvr.c t1_clnt.c t1_lib.c t1_enc.c \
d1_meth.c d1_srvr.c d1_clnt.c d1_lib.c d1_pkt.c \
@@ -33,7 +33,7 @@ LIBSRC= \
bio_ssl.c ssl_err.c kssl.c t1_reneg.c
LIBOBJ= \
s2_meth.o s2_srvr.o s2_clnt.o s2_lib.o s2_enc.o s2_pkt.o \
s3_meth.o s3_srvr.o s3_clnt.o s3_lib.o s3_enc.o s3_pkt.o s3_both.o \
s3_meth.o s3_srvr.o s3_clnt.o s3_lib.o s3_enc.o s3_pkt.o s3_both.o s3_cbc.o \
s23_meth.o s23_srvr.o s23_clnt.o s23_lib.o s23_pkt.o \
t1_meth.o t1_srvr.o t1_clnt.o t1_lib.o t1_enc.o \
d1_meth.o d1_srvr.o d1_clnt.o d1_lib.o d1_pkt.o \
@@ -545,6 +545,27 @@ s3_both.o: ../include/openssl/ssl23.h ../include/openssl/ssl3.h
s3_both.o: ../include/openssl/stack.h ../include/openssl/symhacks.h
s3_both.o: ../include/openssl/tls1.h ../include/openssl/x509.h
s3_both.o: ../include/openssl/x509_vfy.h s3_both.c ssl_locl.h
s3_cbc.o: ../e_os.h ../include/openssl/asn1.h ../include/openssl/bio.h
s3_cbc.o: ../include/openssl/bn.h ../include/openssl/buffer.h
s3_cbc.o: ../include/openssl/comp.h ../include/openssl/crypto.h
s3_cbc.o: ../include/openssl/dsa.h ../include/openssl/dtls1.h
s3_cbc.o: ../include/openssl/e_os2.h ../include/openssl/ec.h
s3_cbc.o: ../include/openssl/ecdh.h ../include/openssl/ecdsa.h
s3_cbc.o: ../include/openssl/err.h ../include/openssl/evp.h
s3_cbc.o: ../include/openssl/fips.h ../include/openssl/hmac.h
s3_cbc.o: ../include/openssl/kssl.h ../include/openssl/lhash.h
s3_cbc.o: ../include/openssl/md5.h ../include/openssl/obj_mac.h
s3_cbc.o: ../include/openssl/objects.h ../include/openssl/opensslconf.h
s3_cbc.o: ../include/openssl/opensslv.h ../include/openssl/ossl_typ.h
s3_cbc.o: ../include/openssl/pem.h ../include/openssl/pem2.h
s3_cbc.o: ../include/openssl/pkcs7.h ../include/openssl/pq_compat.h
s3_cbc.o: ../include/openssl/pqueue.h ../include/openssl/rsa.h
s3_cbc.o: ../include/openssl/safestack.h ../include/openssl/sha.h
s3_cbc.o: ../include/openssl/ssl.h ../include/openssl/ssl2.h
s3_cbc.o: ../include/openssl/ssl23.h ../include/openssl/ssl3.h
s3_cbc.o: ../include/openssl/stack.h ../include/openssl/symhacks.h
s3_cbc.o: ../include/openssl/tls1.h ../include/openssl/x509.h
s3_cbc.o: ../include/openssl/x509_vfy.h s3_cbc.c ssl_locl.h
s3_clnt.o: ../e_os.h ../include/openssl/asn1.h ../include/openssl/bio.h
s3_clnt.o: ../include/openssl/bn.h ../include/openssl/buffer.h
s3_clnt.o: ../include/openssl/comp.h ../include/openssl/crypto.h

View File

@@ -126,16 +126,30 @@
#include <openssl/des.h>
#endif
/* dtls1_enc encrypts/decrypts the record in |s->wrec| / |s->rrec|, respectively.
*
* Returns:
* 0: (in non-constant time) if the record is publically invalid (i.e. too
* short etc).
* 1: if the record's padding is valid / the encryption was successful.
* -1: if the record's padding/AEAD-authenticator is invalid or, if sending,
* an internal error occured. */
int dtls1_enc(SSL *s, int send)
{
SSL3_RECORD *rec;
EVP_CIPHER_CTX *ds;
unsigned long l;
int bs,i,ii,j,k;
int bs,i,j,k,mac_size=0;
const EVP_CIPHER *enc;
if (send)
{
if (s->write_hash)
{
mac_size=EVP_MD_size(s->write_hash);
if (mac_size < 0)
return -1;
}
ds=s->enc_write_ctx;
rec= &(s->s3->wrec);
if (s->enc_write_ctx == NULL)
@@ -156,6 +170,11 @@ int dtls1_enc(SSL *s, int send)
}
else
{
if (s->read_hash)
{
mac_size=EVP_MD_size(s->read_hash);
OPENSSL_assert(mac_size >= 0);
}
ds=s->enc_read_ctx;
rec= &(s->s3->rrec);
if (s->enc_read_ctx == NULL)
@@ -220,7 +239,7 @@ int dtls1_enc(SSL *s, int send)
if (!send)
{
if (l == 0 || l%bs != 0)
return -1;
return 0;
}
EVP_Cipher(ds,rec->data,rec->input,l);
@@ -235,43 +254,7 @@ int dtls1_enc(SSL *s, int send)
#endif /* KSSL_DEBUG */
if ((bs != 1) && !send)
{
ii=i=rec->data[l-1]; /* padding_length */
i++;
if (s->options&SSL_OP_TLS_BLOCK_PADDING_BUG)
{
/* First packet is even in size, so check */
if ((memcmp(s->s3->read_sequence,
"\0\0\0\0\0\0\0\0",8) == 0) && !(ii & 1))
s->s3->flags|=TLS1_FLAGS_TLS_PADDING_BUG;
if (s->s3->flags & TLS1_FLAGS_TLS_PADDING_BUG)
i--;
}
/* TLS 1.0 does not bound the number of padding bytes by the block size.
* All of them must have value 'padding_length'. */
if (i > (int)rec->length)
{
/* Incorrect padding. SSLerr() and ssl3_alert are done
* by caller: we don't want to reveal whether this is
* a decryption error or a MAC verification failure
* (see http://www.openssl.org/~bodo/tls-cbc.txt)
*/
return -1;
}
for (j=(int)(l-i); j<(int)l; j++)
{
if (rec->data[j] != ii)
{
/* Incorrect padding */
return -1;
}
}
rec->length-=i;
rec->data += bs; /* skip the implicit IV */
rec->input += bs;
rec->length -= bs;
}
return tls1_cbc_remove_padding(s, rec, bs, mac_size);
}
return(1);
}

View File

@@ -327,16 +327,12 @@ dtls1_get_buffered_record(SSL *s)
static int
dtls1_process_record(SSL *s)
{
int al;
int clear=0;
int enc_err;
int i,al;
int enc_err;
SSL_SESSION *sess;
SSL3_RECORD *rr;
unsigned int mac_size;
unsigned char md[EVP_MAX_MD_SIZE];
int decryption_failed_or_bad_record_mac = 0;
unsigned char *mac = NULL;
rr= &(s->s3->rrec);
sess = s->session;
@@ -366,14 +362,19 @@ dtls1_process_record(SSL *s)
/* decrypt in place in 'rr->input' */
rr->data=rr->input;
rr->orig_len=rr->length;
enc_err = s->method->ssl3_enc->enc(s,0);
if (enc_err <= 0)
/* enc_err is:
* 0: (in non-constant time) if the record is publically invalid.
* 1: if the padding is valid
* -1: if the padding is invalid */
if (enc_err == 0)
{
/* To minimize information leaked via timing, we will always
* perform all computations before discarding the message.
*/
decryption_failed_or_bad_record_mac = 1;
/* For DTLS we simply ignore bad packets. */
rr->length = 0;
s->packet_length = 0;
goto err;
}
#ifdef TLS_DEBUG
@@ -383,41 +384,59 @@ printf("\n");
#endif
/* r->length is now the compressed data plus mac */
if ( (sess == NULL) ||
(s->enc_read_ctx == NULL) ||
(s->read_hash == NULL))
clear=1;
if (!clear)
if ((sess != NULL) &&
(s->enc_read_ctx != NULL) &&
(s->read_hash != NULL))
{
/* s->read_hash != NULL => mac_size != -1 */
unsigned char *mac = NULL;
unsigned char mac_tmp[EVP_MAX_MD_SIZE];
mac_size=EVP_MD_size(s->read_hash);
OPENSSL_assert(mac_size <= EVP_MAX_MD_SIZE);
if (rr->length > SSL3_RT_MAX_COMPRESSED_LENGTH+mac_size)
/* orig_len is the length of the record before any padding was
* removed. This is public information, as is the MAC in use,
* therefore we can safely process the record in a different
* amount of time if it's too short to possibly contain a MAC.
*/
if (rr->orig_len < mac_size ||
/* CBC records must have a padding length byte too. */
(EVP_CIPHER_CTX_mode(s->enc_read_ctx) == EVP_CIPH_CBC_MODE &&
rr->orig_len < mac_size+1))
{
#if 0 /* OK only for stream ciphers (then rr->length is visible from ciphertext anyway) */
al=SSL_AD_RECORD_OVERFLOW;
SSLerr(SSL_F_DTLS1_PROCESS_RECORD,SSL_R_PRE_MAC_LENGTH_TOO_LONG);
al=SSL_AD_DECODE_ERROR;
SSLerr(SSL_F_DTLS1_PROCESS_RECORD,SSL_R_LENGTH_TOO_SHORT);
goto f_err;
#else
decryption_failed_or_bad_record_mac = 1;
#endif
}
/* check the MAC for rr->input (it's in mac_size bytes at the tail) */
if (rr->length >= mac_size)
if (EVP_CIPHER_CTX_mode(s->enc_read_ctx) == EVP_CIPH_CBC_MODE)
{
/* We update the length so that the TLS header bytes
* can be constructed correctly but we need to extract
* the MAC in constant time from within the record,
* without leaking the contents of the padding bytes.
* */
mac = mac_tmp;
ssl3_cbc_copy_mac(mac_tmp, rr, mac_size);
rr->length -= mac_size;
}
else
{
/* In this case there's no padding, so |rec->orig_len|
* equals |rec->length| and we checked that there's
* enough bytes for |mac_size| above. */
rr->length -= mac_size;
mac = &rr->data[rr->length];
}
else
rr->length = 0;
s->method->ssl3_enc->mac(s,md,0);
if (mac == NULL || memcmp(md, mac, mac_size) != 0)
{
decryption_failed_or_bad_record_mac = 1;
}
i=s->method->ssl3_enc->mac(s,md,0 /* not send */);
if (i < 0 || mac == NULL || CRYPTO_memcmp(md, mac, (size_t)mac_size) != 0)
enc_err = -1;
if (rr->length > SSL3_RT_MAX_COMPRESSED_LENGTH+mac_size)
enc_err = -1;
}
if (decryption_failed_or_bad_record_mac)
if (enc_err < 0)
{
/* decryption failed, silently discard message */
rr->length = 0;

View File

@@ -935,7 +935,7 @@ static int get_server_verify(SSL *s)
s->msg_callback(0, s->version, 0, p, len, s, s->msg_callback_arg); /* SERVER-VERIFY */
p += 1;
if (memcmp(p,s->s2->challenge,s->s2->challenge_length) != 0)
if (CRYPTO_memcmp(p,s->s2->challenge,s->s2->challenge_length) != 0)
{
ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
SSLerr(SSL_F_GET_SERVER_VERIFY,SSL_R_CHALLENGE_IS_DIFFERENT);

View File

@@ -267,8 +267,7 @@ static int ssl2_read_internal(SSL *s, void *buf, int len, int peek)
s->s2->ract_data_length-=mac_size;
ssl2_mac(s,mac,0);
s->s2->ract_data_length-=s->s2->padding;
if ( (memcmp(mac,s->s2->mac_data,
(unsigned int)mac_size) != 0) ||
if ( (CRYPTO_memcmp(mac,s->s2->mac_data,mac_size) != 0) ||
(s->s2->rlength%EVP_CIPHER_CTX_block_size(s->enc_read_ctx) != 0))
{
SSLerr(SSL_F_SSL2_READ_INTERNAL,SSL_R_BAD_MAC_DECODE);

View File

@@ -242,7 +242,7 @@ int ssl3_get_finished(SSL *s, int a, int b)
goto f_err;
}
if (memcmp(p, s->s3->tmp.peer_finish_md, i) != 0)
if (CRYPTO_memcmp(p, s->s3->tmp.peer_finish_md, i) != 0)
{
al=SSL_AD_DECRYPT_ERROR;
SSLerr(SSL_F_SSL3_GET_FINISHED,SSL_R_DIGEST_CHECK_FAILED);

759
ssl/s3_cbc.c Normal file
View File

@@ -0,0 +1,759 @@
/* ssl/s3_cbc.c */
/* ====================================================================
* Copyright (c) 2012 The OpenSSL Project. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. All advertising materials mentioning features or use of this
* software must display the following acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
*
* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For written permission, please contact
* openssl-core@openssl.org.
*
* 5. Products derived from this software may not be called "OpenSSL"
* nor may "OpenSSL" appear in their names without prior written
* permission of the OpenSSL Project.
*
* 6. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit (http://www.openssl.org/)"
*
* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
* ====================================================================
*
* This product includes cryptographic software written by Eric Young
* (eay@cryptsoft.com). This product includes software written by Tim
* Hudson (tjh@cryptsoft.com).
*
*/
#include "ssl_locl.h"
#include <openssl/md5.h>
#include <openssl/sha.h>
/* MAX_HASH_BIT_COUNT_BYTES is the maximum number of bytes in the hash's length
* field. (SHA-384/512 have 128-bit length.) */
#define MAX_HASH_BIT_COUNT_BYTES 16
/* MAX_HASH_BLOCK_SIZE is the maximum hash block size that we'll support.
* Currently SHA-384/512 has a 128-byte block size and that's the largest
* supported by TLS.) */
#define MAX_HASH_BLOCK_SIZE 128
/* Some utility functions are needed:
*
* These macros return the given value with the MSB copied to all the other
* bits. They use the fact that arithmetic shift shifts-in the sign bit.
* However, this is not ensured by the C standard so you may need to replace
* them with something else on odd CPUs. */
#define DUPLICATE_MSB_TO_ALL(x) ( (unsigned)( (int)(x) >> (sizeof(int)*8-1) ) )
#define DUPLICATE_MSB_TO_ALL_8(x) ((unsigned char)(DUPLICATE_MSB_TO_ALL(x)))
/* constant_time_ge returns 0xff if a>=b and 0x00 otherwise. */
static unsigned constant_time_ge(unsigned a, unsigned b)
{
a -= b;
return DUPLICATE_MSB_TO_ALL(~a);
}
/* constant_time_eq_8 returns 0xff if a==b and 0x00 otherwise. */
static unsigned char constant_time_eq_8(unsigned char a, unsigned char b)
{
unsigned c = a ^ b;
c--;
return DUPLICATE_MSB_TO_ALL_8(c);
}
/* ssl3_cbc_remove_padding removes padding from the decrypted, SSLv3, CBC
* record in |rec| by updating |rec->length| in constant time.
*
* block_size: the block size of the cipher used to encrypt the record.
* returns:
* 0: (in non-constant time) if the record is publicly invalid.
* 1: if the padding was valid
* -1: otherwise. */
int ssl3_cbc_remove_padding(const SSL* s,
SSL3_RECORD *rec,
unsigned block_size,
unsigned mac_size)
{
unsigned padding_length, good;
const unsigned overhead = 1 /* padding length byte */ + mac_size;
/* These lengths are all public so we can test them in non-constant
* time. */
if (overhead > rec->length)
return 0;
padding_length = rec->data[rec->length-1];
good = constant_time_ge(rec->length, padding_length+overhead);
/* SSLv3 requires that the padding is minimal. */
good &= constant_time_ge(block_size, padding_length+1);
rec->length -= good & (padding_length+1);
return (int)((good & 1) | (~good & -1));
}
/* tls1_cbc_remove_padding removes the CBC padding from the decrypted, TLS, CBC
* record in |rec| in constant time and returns 1 if the padding is valid and
* -1 otherwise. It also removes any explicit IV from the start of the record
* without leaking any timing about whether there was enough space after the
* padding was removed.
*
* block_size: the block size of the cipher used to encrypt the record.
* returns:
* 0: (in non-constant time) if the record is publicly invalid.
* 1: if the padding was valid
* -1: otherwise. */
int tls1_cbc_remove_padding(const SSL* s,
SSL3_RECORD *rec,
unsigned block_size,
unsigned mac_size)
{
unsigned padding_length, good, to_check, i;
const char has_explicit_iv = s->version == DTLS1_VERSION;
const unsigned overhead = 1 /* padding length byte */ +
mac_size +
(has_explicit_iv ? block_size : 0);
/* These lengths are all public so we can test them in non-constant
* time. */
if (overhead > rec->length)
return 0;
padding_length = rec->data[rec->length-1];
/* NB: if compression is in operation the first packet may not be of
* even length so the padding bug check cannot be performed. This bug
* workaround has been around since SSLeay so hopefully it is either
* fixed now or no buggy implementation supports compression [steve]
*/
if ( (s->options&SSL_OP_TLS_BLOCK_PADDING_BUG) && !s->expand)
{
/* First packet is even in size, so check */
if ((memcmp(s->s3->read_sequence, "\0\0\0\0\0\0\0\0",8) == 0) &&
!(padding_length & 1))
{
s->s3->flags|=TLS1_FLAGS_TLS_PADDING_BUG;
}
if ((s->s3->flags & TLS1_FLAGS_TLS_PADDING_BUG) &&
padding_length > 0)
{
padding_length--;
}
}
good = constant_time_ge(rec->length, overhead+padding_length);
/* The padding consists of a length byte at the end of the record and
* then that many bytes of padding, all with the same value as the
* length byte. Thus, with the length byte included, there are i+1
* bytes of padding.
*
* We can't check just |padding_length+1| bytes because that leaks
* decrypted information. Therefore we always have to check the maximum
* amount of padding possible. (Again, the length of the record is
* public information so we can use it.) */
to_check = 255; /* maximum amount of padding. */
if (to_check > rec->length-1)
to_check = rec->length-1;
for (i = 0; i < to_check; i++)
{
unsigned char mask = constant_time_ge(padding_length, i);
unsigned char b = rec->data[rec->length-1-i];
/* The final |padding_length+1| bytes should all have the value
* |padding_length|. Therefore the XOR should be zero. */
good &= ~(mask&(padding_length ^ b));
}
/* If any of the final |padding_length+1| bytes had the wrong value,
* one or more of the lower eight bits of |good| will be cleared. We
* AND the bottom 8 bits together and duplicate the result to all the
* bits. */
good &= good >> 4;
good &= good >> 2;
good &= good >> 1;
good <<= sizeof(good)*8-1;
good = DUPLICATE_MSB_TO_ALL(good);
rec->length -= good & (padding_length+1);
/* We can always safely skip the explicit IV. We check at the beginning
* of this function that the record has at least enough space for the
* IV, MAC and padding length byte. (These can be checked in
* non-constant time because it's all public information.) So, if the
* padding was invalid, then we didn't change |rec->length| and this is
* safe. If the padding was valid then we know that we have at least
* overhead+padding_length bytes of space and so this is still safe
* because overhead accounts for the explicit IV. */
if (has_explicit_iv)
{
rec->data += block_size;
rec->input += block_size;
rec->length -= block_size;
rec->orig_len -= block_size;
}
return (int)((good & 1) | (~good & -1));
}
#if defined(_M_AMD64) || defined(__x86_64__)
#define CBC_MAC_ROTATE_IN_PLACE
#endif
/* ssl3_cbc_copy_mac copies |md_size| bytes from the end of |rec| to |out| in
* constant time (independent of the concrete value of rec->length, which may
* vary within a 256-byte window).
*
* ssl3_cbc_remove_padding or tls1_cbc_remove_padding must be called prior to
* this function.
*
* On entry:
* rec->orig_len >= md_size
* md_size <= EVP_MAX_MD_SIZE
*
* If CBC_MAC_ROTATE_IN_PLACE is defined then the rotation is performed with
* variable accesses in a 64-byte-aligned buffer. Assuming that this fits into
* a single cache-line, then the variable memory accesses don't actually affect
* the timing. This has been tested to be true on Intel amd64 chips.
*/
void ssl3_cbc_copy_mac(unsigned char* out,
const SSL3_RECORD *rec,
unsigned md_size)
{
#if defined(CBC_MAC_ROTATE_IN_PLACE)
unsigned char rotated_mac_buf[EVP_MAX_MD_SIZE*2];
unsigned char *rotated_mac;
#else
unsigned char rotated_mac[EVP_MAX_MD_SIZE];
#endif
/* mac_end is the index of |rec->data| just after the end of the MAC. */
unsigned mac_end = rec->length;
unsigned mac_start = mac_end - md_size;
/* scan_start contains the number of bytes that we can ignore because
* the MAC's position can only vary by 255 bytes. */
unsigned scan_start = 0;
unsigned i, j;
unsigned div_spoiler;
unsigned rotate_offset;
OPENSSL_assert(rec->orig_len >= md_size);
OPENSSL_assert(md_size <= EVP_MAX_MD_SIZE);
#if defined(CBC_MAC_ROTATE_IN_PLACE)
rotated_mac = (unsigned char*) (((intptr_t)(rotated_mac_buf + 64)) & ~63);
#endif
/* This information is public so it's safe to branch based on it. */
if (rec->orig_len > md_size + 255 + 1)
scan_start = rec->orig_len - (md_size + 255 + 1);
/* div_spoiler contains a multiple of md_size that is used to cause the
* modulo operation to be constant time. Without this, the time varies
* based on the amount of padding when running on Intel chips at least.
*
* The aim of right-shifting md_size is so that the compiler doesn't
* figure out that it can remove div_spoiler as that would require it
* to prove that md_size is always even, which I hope is beyond it. */
div_spoiler = md_size >> 1;
div_spoiler <<= (sizeof(div_spoiler)-1)*8;
rotate_offset = (div_spoiler + mac_start - scan_start) % md_size;
memset(rotated_mac, 0, md_size);
for (i = scan_start; i < rec->orig_len;)
{
for (j = 0; j < md_size && i < rec->orig_len; i++, j++)
{
unsigned char mac_started = constant_time_ge(i, mac_start);
unsigned char mac_ended = constant_time_ge(i, mac_end);
unsigned char b = 0;
b = rec->data[i];
rotated_mac[j] |= b & mac_started & ~mac_ended;
}
}
/* Now rotate the MAC */
#if defined(CBC_MAC_ROTATE_IN_PLACE)
j = 0;
for (i = 0; i < md_size; i++)
{
unsigned char offset = (div_spoiler + rotate_offset + i) % md_size;
out[j++] = rotated_mac[offset];
}
#else
memset(out, 0, md_size);
for (i = 0; i < md_size; i++)
{
unsigned char offset = (div_spoiler + md_size - rotate_offset + i) % md_size;
for (j = 0; j < md_size; j++)
out[j] |= rotated_mac[i] & constant_time_eq_8(j, offset);
}
#endif
}
/* These functions serialize the state of a hash and thus perform the standard
* "final" operation without adding the padding and length that such a function
* typically does. */
static void tls1_md5_final_raw(void* ctx, unsigned char *md_out)
{
MD5_CTX *md5 = ctx;
l2n(md5->A, md_out);
l2n(md5->B, md_out);
l2n(md5->C, md_out);
l2n(md5->D, md_out);
}
static void tls1_sha1_final_raw(void* ctx, unsigned char *md_out)
{
SHA_CTX *sha1 = ctx;
l2n(sha1->h0, md_out);
l2n(sha1->h1, md_out);
l2n(sha1->h2, md_out);
l2n(sha1->h3, md_out);
l2n(sha1->h4, md_out);
}
#define LARGEST_DIGEST_CTX SHA_CTX
#ifndef OPENSSL_NO_SHA256
static void tls1_sha256_final_raw(void* ctx, unsigned char *md_out)
{
SHA256_CTX *sha256 = ctx;
unsigned i;
for (i = 0; i < 8; i++)
{
l2n(sha256->h[i], md_out);
}
}
#undef LARGEST_DIGEST_CTX
#define LARGEST_DIGEST_CTX SHA256_CTX
#endif
#ifndef OPENSSL_NO_SHA512
static void tls1_sha512_final_raw(void* ctx, unsigned char *md_out)
{
SHA512_CTX *sha512 = ctx;
unsigned i;
for (i = 0; i < 8; i++)
{
l2n8(sha512->h[i], md_out);
}
}
#undef LARGEST_DIGEST_CTX
#define LARGEST_DIGEST_CTX SHA512_CTX
#endif
/* ssl3_cbc_record_digest_supported returns 1 iff |ctx| uses a hash function
* which ssl3_cbc_digest_record supports. */
char ssl3_cbc_record_digest_supported(const EVP_MD *digest)
{
#ifdef OPENSSL_FIPS
if (FIPS_mode())
return 0;
#endif
switch (EVP_MD_type(digest))
{
case NID_md5:
case NID_sha1:
#ifndef OPENSSL_NO_SHA256
case NID_sha224:
case NID_sha256:
#endif
#ifndef OPENSSL_NO_SHA512
case NID_sha384:
case NID_sha512:
#endif
return 1;
default:
return 0;
}
}
/* ssl3_cbc_digest_record computes the MAC of a decrypted, padded SSLv3/TLS
* record.
*
* ctx: the EVP_MD_CTX from which we take the hash function.
* ssl3_cbc_record_digest_supported must return true for this EVP_MD_CTX.
* md_out: the digest output. At most EVP_MAX_MD_SIZE bytes will be written.
* md_out_size: if non-NULL, the number of output bytes is written here.
* header: the 13-byte, TLS record header.
* data: the record data itself, less any preceeding explicit IV.
* data_plus_mac_size: the secret, reported length of the data and MAC
* once the padding has been removed.
* data_plus_mac_plus_padding_size: the public length of the whole
* record, including padding.
* is_sslv3: non-zero if we are to use SSLv3. Otherwise, TLS.
*
* On entry: by virtue of having been through one of the remove_padding
* functions, above, we know that data_plus_mac_size is large enough to contain
* a padding byte and MAC. (If the padding was invalid, it might contain the
* padding too. ) */
void ssl3_cbc_digest_record(
const EVP_MD *digest,
unsigned char* md_out,
size_t* md_out_size,
const unsigned char header[13],
const unsigned char *data,
size_t data_plus_mac_size,
size_t data_plus_mac_plus_padding_size,
const unsigned char *mac_secret,
unsigned mac_secret_length,
char is_sslv3)
{
union { double align;
unsigned char c[sizeof(LARGEST_DIGEST_CTX)]; } md_state;
void (*md_final_raw)(void *ctx, unsigned char *md_out);
void (*md_transform)(void *ctx, const unsigned char *block);
unsigned md_size, md_block_size = 64;
unsigned sslv3_pad_length = 40, header_length, variance_blocks,
len, max_mac_bytes, num_blocks,
num_starting_blocks, k, mac_end_offset, c, index_a, index_b;
unsigned int bits; /* at most 18 bits */
unsigned char length_bytes[MAX_HASH_BIT_COUNT_BYTES];
/* hmac_pad is the masked HMAC key. */
unsigned char hmac_pad[MAX_HASH_BLOCK_SIZE];
unsigned char first_block[MAX_HASH_BLOCK_SIZE];
unsigned char mac_out[EVP_MAX_MD_SIZE];
unsigned i, j, md_out_size_u;
EVP_MD_CTX md_ctx;
/* mdLengthSize is the number of bytes in the length field that terminates
* the hash. */
unsigned md_length_size = 8;
/* This is a, hopefully redundant, check that allows us to forget about
* many possible overflows later in this function. */
OPENSSL_assert(data_plus_mac_plus_padding_size < 1024*1024);
switch (EVP_MD_type(digest))
{
case NID_md5:
MD5_Init((MD5_CTX*)md_state.c);
md_final_raw = tls1_md5_final_raw;
md_transform = (void(*)(void *ctx, const unsigned char *block)) MD5_Transform;
md_size = 16;
sslv3_pad_length = 48;
break;
case NID_sha1:
SHA1_Init((SHA_CTX*)md_state.c);
md_final_raw = tls1_sha1_final_raw;
md_transform = (void(*)(void *ctx, const unsigned char *block)) SHA1_Transform;
md_size = 20;
break;
#ifndef OPENSSL_NO_SHA256
case NID_sha224:
SHA224_Init((SHA256_CTX*)md_state.c);
md_final_raw = tls1_sha256_final_raw;
md_transform = (void(*)(void *ctx, const unsigned char *block)) SHA256_Transform;
md_size = 224/8;
break;
case NID_sha256:
SHA256_Init((SHA256_CTX*)md_state.c);
md_final_raw = tls1_sha256_final_raw;
md_transform = (void(*)(void *ctx, const unsigned char *block)) SHA256_Transform;
md_size = 32;
break;
#endif
#ifndef OPENSSL_NO_SHA512
case NID_sha384:
SHA384_Init((SHA512_CTX*)md_state.c);
md_final_raw = tls1_sha512_final_raw;
md_transform = (void(*)(void *ctx, const unsigned char *block)) SHA512_Transform;
md_size = 384/8;
md_block_size = 128;
md_length_size = 16;
break;
case NID_sha512:
SHA512_Init((SHA512_CTX*)md_state.c);
md_final_raw = tls1_sha512_final_raw;
md_transform = (void(*)(void *ctx, const unsigned char *block)) SHA512_Transform;
md_size = 64;
md_block_size = 128;
md_length_size = 16;
break;
#endif
default:
/* ssl3_cbc_record_digest_supported should have been
* called first to check that the hash function is
* supported. */
OPENSSL_assert(0);
if (md_out_size)
*md_out_size = -1;
return;
}
OPENSSL_assert(md_length_size <= MAX_HASH_BIT_COUNT_BYTES);
OPENSSL_assert(md_block_size <= MAX_HASH_BLOCK_SIZE);
OPENSSL_assert(md_size <= EVP_MAX_MD_SIZE);
header_length = 13;
if (is_sslv3)
{
header_length =
mac_secret_length +
sslv3_pad_length +
8 /* sequence number */ +
1 /* record type */ +
2 /* record length */;
}
/* variance_blocks is the number of blocks of the hash that we have to
* calculate in constant time because they could be altered by the
* padding value.
*
* In SSLv3, the padding must be minimal so the end of the plaintext
* varies by, at most, 15+20 = 35 bytes. (We conservatively assume that
* the MAC size varies from 0..20 bytes.) In case the 9 bytes of hash
* termination (0x80 + 64-bit length) don't fit in the final block, we
* say that the final two blocks can vary based on the padding.
*
* TLSv1 has MACs up to 48 bytes long (SHA-384) and the padding is not
* required to be minimal. Therefore we say that the final six blocks
* can vary based on the padding.
*
* Later in the function, if the message is short and there obviously
* cannot be this many blocks then variance_blocks can be reduced. */
variance_blocks = is_sslv3 ? 2 : 6;
/* From now on we're dealing with the MAC, which conceptually has 13
* bytes of `header' before the start of the data (TLS) or 71/75 bytes
* (SSLv3) */
len = data_plus_mac_plus_padding_size + header_length;
/* max_mac_bytes contains the maximum bytes of bytes in the MAC, including
* |header|, assuming that there's no padding. */
max_mac_bytes = len - md_size - 1;
/* num_blocks is the maximum number of hash blocks. */
num_blocks = (max_mac_bytes + 1 + md_length_size + md_block_size - 1) / md_block_size;
/* In order to calculate the MAC in constant time we have to handle
* the final blocks specially because the padding value could cause the
* end to appear somewhere in the final |variance_blocks| blocks and we
* can't leak where. However, |num_starting_blocks| worth of data can
* be hashed right away because no padding value can affect whether
* they are plaintext. */
num_starting_blocks = 0;
/* k is the starting byte offset into the conceptual header||data where
* we start processing. */
k = 0;
/* mac_end_offset is the index just past the end of the data to be
* MACed. */
mac_end_offset = data_plus_mac_size + header_length - md_size;
/* c is the index of the 0x80 byte in the final hash block that
* contains application data. */
c = mac_end_offset % md_block_size;
/* index_a is the hash block number that contains the 0x80 terminating
* value. */
index_a = mac_end_offset / md_block_size;
/* index_b is the hash block number that contains the 64-bit hash
* length, in bits. */
index_b = (mac_end_offset + md_length_size) / md_block_size;
/* bits is the hash-length in bits. It includes the additional hash
* block for the masked HMAC key, or whole of |header| in the case of
* SSLv3. */
/* For SSLv3, if we're going to have any starting blocks then we need
* at least two because the header is larger than a single block. */
if (num_blocks > variance_blocks + (is_sslv3 ? 1 : 0))
{
num_starting_blocks = num_blocks - variance_blocks;
k = md_block_size*num_starting_blocks;
}
bits = 8*mac_end_offset;
if (!is_sslv3)
{
/* Compute the initial HMAC block. For SSLv3, the padding and
* secret bytes are included in |header| because they take more
* than a single block. */
bits += 8*md_block_size;
memset(hmac_pad, 0, md_block_size);
OPENSSL_assert(mac_secret_length <= sizeof(hmac_pad));
memcpy(hmac_pad, mac_secret, mac_secret_length);
for (i = 0; i < md_block_size; i++)
hmac_pad[i] ^= 0x36;
md_transform(md_state.c, hmac_pad);
}
memset(length_bytes,0,md_length_size-4);
length_bytes[md_length_size-4] = (unsigned char)(bits>>24);
length_bytes[md_length_size-3] = (unsigned char)(bits>>16);
length_bytes[md_length_size-2] = (unsigned char)(bits>>8);
length_bytes[md_length_size-1] = (unsigned char)bits;
if (k > 0)
{
if (is_sslv3)
{
/* The SSLv3 header is larger than a single block.
* overhang is the number of bytes beyond a single
* block that the header consumes: either 7 bytes
* (SHA1) or 11 bytes (MD5). */
unsigned overhang = header_length-md_block_size;
md_transform(md_state.c, header);
memcpy(first_block, header + md_block_size, overhang);
memcpy(first_block + overhang, data, md_block_size-overhang);
md_transform(md_state.c, first_block);
for (i = 1; i < k/md_block_size - 1; i++)
md_transform(md_state.c, data + md_block_size*i - overhang);
}
else
{
/* k is a multiple of md_block_size. */
memcpy(first_block, header, 13);
memcpy(first_block+13, data, md_block_size-13);
md_transform(md_state.c, first_block);
for (i = 1; i < k/md_block_size; i++)
md_transform(md_state.c, data + md_block_size*i - 13);
}
}
memset(mac_out, 0, sizeof(mac_out));
/* We now process the final hash blocks. For each block, we construct
* it in constant time. If the |i==index_a| then we'll include the 0x80
* bytes and zero pad etc. For each block we selectively copy it, in
* constant time, to |mac_out|. */
for (i = num_starting_blocks; i <= num_starting_blocks+variance_blocks; i++)
{
unsigned char block[MAX_HASH_BLOCK_SIZE];
unsigned char is_block_a = constant_time_eq_8(i, index_a);
unsigned char is_block_b = constant_time_eq_8(i, index_b);
for (j = 0; j < md_block_size; j++)
{
unsigned char b = 0, is_past_c, is_past_cp1;
if (k < header_length)
b = header[k];
else if (k < data_plus_mac_plus_padding_size + header_length)
b = data[k-header_length];
k++;
is_past_c = is_block_a & constant_time_ge(j, c);
is_past_cp1 = is_block_a & constant_time_ge(j, c+1);
/* If this is the block containing the end of the
* application data, and we are at the offset for the
* 0x80 value, then overwrite b with 0x80. */
b = (b&~is_past_c) | (0x80&is_past_c);
/* If this the the block containing the end of the
* application data and we're past the 0x80 value then
* just write zero. */
b = b&~is_past_cp1;
/* If this is index_b (the final block), but not
* index_a (the end of the data), then the 64-bit
* length didn't fit into index_a and we're having to
* add an extra block of zeros. */
b &= ~is_block_b | is_block_a;
/* The final bytes of one of the blocks contains the
* length. */
if (j >= md_block_size - md_length_size)
{
/* If this is index_b, write a length byte. */
b = (b&~is_block_b) | (is_block_b&length_bytes[j-(md_block_size-md_length_size)]);
}
block[j] = b;
}
md_transform(md_state.c, block);
md_final_raw(md_state.c, block);
/* If this is index_b, copy the hash value to |mac_out|. */
for (j = 0; j < md_size; j++)
mac_out[j] |= block[j]&is_block_b;
}
EVP_MD_CTX_init(&md_ctx);
EVP_DigestInit_ex(&md_ctx, digest, NULL /* engine */);
if (is_sslv3)
{
/* We repurpose |hmac_pad| to contain the SSLv3 pad2 block. */
memset(hmac_pad, 0x5c, sslv3_pad_length);
EVP_DigestUpdate(&md_ctx, mac_secret, mac_secret_length);
EVP_DigestUpdate(&md_ctx, hmac_pad, sslv3_pad_length);
EVP_DigestUpdate(&md_ctx, mac_out, md_size);
}
else
{
/* Complete the HMAC in the standard manner. */
for (i = 0; i < md_block_size; i++)
hmac_pad[i] ^= 0x6a;
EVP_DigestUpdate(&md_ctx, hmac_pad, md_block_size);
EVP_DigestUpdate(&md_ctx, mac_out, md_size);
}
EVP_DigestFinal(&md_ctx, md_out, &md_out_size_u);
if (md_out_size)
*md_out_size = md_out_size_u;
EVP_MD_CTX_cleanup(&md_ctx);
}
#ifdef OPENSSL_FIPS
/* Due to the need to use EVP in FIPS mode we can't reimplement digests but
* we can ensure the number of blocks processed is equal for all cases
* by digesting additional data.
*/
void tls_fips_digest_extra(
const EVP_CIPHER_CTX *cipher_ctx, const EVP_MD *hash, HMAC_CTX *hctx,
const unsigned char *data, size_t data_len, size_t orig_len)
{
size_t block_size, digest_pad, blocks_data, blocks_orig;
if (EVP_CIPHER_CTX_mode(cipher_ctx) != EVP_CIPH_CBC_MODE)
return;
block_size = EVP_MD_block_size(hash);
/* We are in FIPS mode if we get this far so we know we have only SHA*
* digests and TLS to deal with.
* Minimum digest padding length is 17 for SHA384/SHA512 and 9
* otherwise.
* Additional header is 13 bytes. To get the number of digest blocks
* processed round up the amount of data plus padding to the nearest
* block length. Block length is 128 for SHA384/SHA512 and 64 otherwise.
* So we have:
* blocks = (payload_len + digest_pad + 13 + block_size - 1)/block_size
* equivalently:
* blocks = (payload_len + digest_pad + 12)/block_size + 1
* HMAC adds a constant overhead.
* We're ultimately only interested in differences so this becomes
* blocks = (payload_len + 29)/128
* for SHA384/SHA512 and
* blocks = (payload_len + 21)/64
* otherwise.
*/
digest_pad = block_size == 64 ? 21 : 29;
blocks_orig = (orig_len + digest_pad)/block_size;
blocks_data = (data_len + digest_pad)/block_size;
/* MAC enough blocks to make up the difference between the original
* and actual lengths plus one extra block to ensure this is never a
* no op. The "data" pointer should always have enough space to
* perform this operation as it is large enough for a maximum
* length TLS buffer.
*/
HMAC_Update(hctx, data,
(blocks_orig - blocks_data + 1) * block_size);
}
#endif

View File

@@ -262,7 +262,16 @@ int ssl3_connect(SSL *s)
ret=ssl3_get_server_hello(s);
if (ret <= 0) goto end;
if (s->hit)
{
s->state=SSL3_ST_CR_FINISHED_A;
#ifndef OPENSSL_NO_TLSEXT
if (s->tlsext_ticket_expected)
{
/* receive renewed session ticket */
s->state=SSL3_ST_CR_SESSION_TICKET_A;
}
#endif
}
else
s->state=SSL3_ST_CR_CERT_A;
s->init_num=0;

View File

@@ -433,12 +433,21 @@ void ssl3_cleanup_key_block(SSL *s)
s->s3->tmp.key_block_length=0;
}
/* ssl3_enc encrypts/decrypts the record in |s->wrec| / |s->rrec|, respectively.
*
* Returns:
* 0: (in non-constant time) if the record is publically invalid (i.e. too
* short etc).
* 1: if the record's padding is valid / the encryption was successful.
* -1: if the record's padding is invalid or, if sending, an internal error
* occured.
*/
int ssl3_enc(SSL *s, int send)
{
SSL3_RECORD *rec;
EVP_CIPHER_CTX *ds;
unsigned long l;
int bs,i;
int bs,i,mac_size=0;
const EVP_CIPHER *enc;
if (send)
@@ -489,32 +498,19 @@ int ssl3_enc(SSL *s, int send)
if (!send)
{
if (l == 0 || l%bs != 0)
{
SSLerr(SSL_F_SSL3_ENC,SSL_R_BLOCK_CIPHER_PAD_IS_WRONG);
ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECRYPTION_FAILED);
return 0;
}
/* otherwise, rec->length >= bs */
}
EVP_Cipher(ds,rec->data,rec->input,l);
rec->orig_len = rec->length;
if (s->read_hash != NULL)
mac_size = EVP_MD_size(s->read_hash);
if ((bs != 1) && !send)
{
i=rec->data[l-1]+1;
/* SSL 3.0 bounds the number of padding bytes by the block size;
* padding bytes (except the last one) are arbitrary */
if (i > bs)
{
/* Incorrect padding. SSLerr() and ssl3_alert are done
* by caller: we don't want to reveal whether this is
* a decryption error or a MAC verification failure
* (see http://www.openssl.org/~bodo/tls-cbc.txt) */
return -1;
}
/* now i <= bs <= rec->length */
rec->length-=i;
}
return ssl3_cbc_remove_padding(s, rec, bs, mac_size);
}
return(1);
}
@@ -591,7 +587,7 @@ int ssl3_mac(SSL *ssl, unsigned char *md, int send)
EVP_MD_CTX md_ctx;
const EVP_MD *hash;
unsigned char *p,rec_char;
unsigned int md_size;
size_t md_size;
int npad;
if (send)
@@ -612,28 +608,68 @@ int ssl3_mac(SSL *ssl, unsigned char *md, int send)
md_size=EVP_MD_size(hash);
npad=(48/md_size)*md_size;
/* Chop the digest off the end :-) */
EVP_MD_CTX_init(&md_ctx);
if (!send &&
EVP_CIPHER_CTX_mode(ssl->enc_read_ctx) == EVP_CIPH_CBC_MODE &&
ssl3_cbc_record_digest_supported(hash))
{
/* This is a CBC-encrypted record. We must avoid leaking any
* timing-side channel information about how many blocks of
* data we are hashing because that gives an attacker a
* timing-oracle. */
EVP_DigestInit_ex( &md_ctx,hash, NULL);
EVP_DigestUpdate(&md_ctx,mac_sec,md_size);
EVP_DigestUpdate(&md_ctx,ssl3_pad_1,npad);
EVP_DigestUpdate(&md_ctx,seq,8);
rec_char=rec->type;
EVP_DigestUpdate(&md_ctx,&rec_char,1);
p=md;
s2n(rec->length,p);
EVP_DigestUpdate(&md_ctx,md,2);
EVP_DigestUpdate(&md_ctx,rec->input,rec->length);
EVP_DigestFinal_ex( &md_ctx,md,NULL);
/* npad is, at most, 48 bytes and that's with MD5:
* 16 + 48 + 8 (sequence bytes) + 1 + 2 = 75.
*
* With SHA-1 (the largest hash speced for SSLv3) the hash size
* goes up 4, but npad goes down by 8, resulting in a smaller
* total size. */
unsigned char header[75];
unsigned j = 0;
memcpy(header+j, mac_sec, md_size);
j += md_size;
memcpy(header+j, ssl3_pad_1, npad);
j += npad;
memcpy(header+j, seq, 8);
j += 8;
header[j++] = rec->type;
header[j++] = rec->length >> 8;
header[j++] = rec->length & 0xff;
EVP_DigestInit_ex( &md_ctx,hash, NULL);
EVP_DigestUpdate(&md_ctx,mac_sec,md_size);
EVP_DigestUpdate(&md_ctx,ssl3_pad_2,npad);
EVP_DigestUpdate(&md_ctx,md,md_size);
EVP_DigestFinal_ex( &md_ctx,md,&md_size);
ssl3_cbc_digest_record(
hash,
md, &md_size,
header, rec->input,
rec->length + md_size, rec->orig_len,
mac_sec, md_size,
1 /* is SSLv3 */);
}
else
{
unsigned int md_size_u;
/* Chop the digest off the end :-) */
EVP_MD_CTX_init(&md_ctx);
EVP_MD_CTX_cleanup(&md_ctx);
EVP_DigestInit_ex( &md_ctx,hash, NULL);
EVP_DigestUpdate(&md_ctx,mac_sec,md_size);
EVP_DigestUpdate(&md_ctx,ssl3_pad_1,npad);
EVP_DigestUpdate(&md_ctx,seq,8);
rec_char=rec->type;
EVP_DigestUpdate(&md_ctx,&rec_char,1);
p=md;
s2n(rec->length,p);
EVP_DigestUpdate(&md_ctx,md,2);
EVP_DigestUpdate(&md_ctx,rec->input,rec->length);
EVP_DigestFinal_ex( &md_ctx,md,NULL);
EVP_DigestInit_ex( &md_ctx,hash, NULL);
EVP_DigestUpdate(&md_ctx,mac_sec,md_size);
EVP_DigestUpdate(&md_ctx,ssl3_pad_2,npad);
EVP_DigestUpdate(&md_ctx,md,md_size);
EVP_DigestFinal_ex( &md_ctx,md,&md_size_u);
md_size = md_size_u;
EVP_MD_CTX_cleanup(&md_ctx);
}
ssl3_record_sequence_update(seq);
return(md_size);

View File

@@ -246,11 +246,8 @@ static int ssl3_get_record(SSL *s)
unsigned char *p;
unsigned char md[EVP_MAX_MD_SIZE];
short version;
unsigned int mac_size;
int clear=0;
unsigned mac_size;
size_t extra;
int decryption_failed_or_bad_record_mac = 0;
unsigned char *mac = NULL;
rr= &(s->s3->rrec);
sess=s->session;
@@ -354,19 +351,18 @@ again:
/* decrypt in place in 'rr->input' */
rr->data=rr->input;
rr->orig_len=rr->length;
enc_err = s->method->ssl3_enc->enc(s,0);
if (enc_err <= 0)
/* enc_err is:
* 0: (in non-constant time) if the record is publically invalid.
* 1: if the padding is valid
* -1: if the padding is invalid */
if (enc_err == 0)
{
if (enc_err == 0)
/* SSLerr() and ssl3_send_alert() have been called */
goto err;
/* Otherwise enc_err == -1, which indicates bad padding
* (rec->length has not been changed in this case).
* To minimize information leaked via timing, we will perform
* the MAC computation anyway. */
decryption_failed_or_bad_record_mac = 1;
al=SSL_AD_DECRYPTION_FAILED;
SSLerr(SSL_F_SSL3_GET_RECORD,SSL_R_BLOCK_CIPHER_PAD_IS_WRONG);
goto f_err;
}
#ifdef TLS_DEBUG
@@ -376,51 +372,59 @@ printf("\n");
#endif
/* r->length is now the compressed data plus mac */
if ( (sess == NULL) ||
(s->enc_read_ctx == NULL) ||
(s->read_hash == NULL))
clear=1;
if (!clear)
if ((sess != NULL) &&
(s->enc_read_ctx != NULL) &&
(s->read_hash != NULL))
{
/* s->read_hash != NULL => mac_size != -1 */
unsigned char *mac = NULL;
unsigned char mac_tmp[EVP_MAX_MD_SIZE];
mac_size=EVP_MD_size(s->read_hash);
OPENSSL_assert(mac_size <= EVP_MAX_MD_SIZE);
if (rr->length > SSL3_RT_MAX_COMPRESSED_LENGTH+extra+mac_size)
/* orig_len is the length of the record before any padding was
* removed. This is public information, as is the MAC in use,
* therefore we can safely process the record in a different
* amount of time if it's too short to possibly contain a MAC.
*/
if (rr->orig_len < mac_size ||
/* CBC records must have a padding length byte too. */
(EVP_CIPHER_CTX_mode(s->enc_read_ctx) == EVP_CIPH_CBC_MODE &&
rr->orig_len < mac_size+1))
{
#if 0 /* OK only for stream ciphers (then rr->length is visible from ciphertext anyway) */
al=SSL_AD_RECORD_OVERFLOW;
SSLerr(SSL_F_SSL3_GET_RECORD,SSL_R_PRE_MAC_LENGTH_TOO_LONG);
goto f_err;
#else
decryption_failed_or_bad_record_mac = 1;
#endif
}
/* check the MAC for rr->input (it's in mac_size bytes at the tail) */
if (rr->length >= mac_size)
{
rr->length -= mac_size;
mac = &rr->data[rr->length];
}
else
{
/* record (minus padding) is too short to contain a MAC */
#if 0 /* OK only for stream ciphers */
al=SSL_AD_DECODE_ERROR;
SSLerr(SSL_F_SSL3_GET_RECORD,SSL_R_LENGTH_TOO_SHORT);
goto f_err;
#else
decryption_failed_or_bad_record_mac = 1;
rr->length = 0;
#endif
}
i=s->method->ssl3_enc->mac(s,md,0);
if (mac == NULL || memcmp(md, mac, mac_size) != 0)
if (EVP_CIPHER_CTX_mode(s->enc_read_ctx) == EVP_CIPH_CBC_MODE)
{
decryption_failed_or_bad_record_mac = 1;
/* We update the length so that the TLS header bytes
* can be constructed correctly but we need to extract
* the MAC in constant time from within the record,
* without leaking the contents of the padding bytes.
* */
mac = mac_tmp;
ssl3_cbc_copy_mac(mac_tmp, rr, mac_size);
rr->length -= mac_size;
}
else
{
/* In this case there's no padding, so |rec->orig_len|
* equals |rec->length| and we checked that there's
* enough bytes for |mac_size| above. */
rr->length -= mac_size;
mac = &rr->data[rr->length];
}
i=s->method->ssl3_enc->mac(s,md,0 /* not send */);
if (i < 0 || mac == NULL || CRYPTO_memcmp(md, mac, (size_t)mac_size) != 0)
enc_err = -1;
if (rr->length > SSL3_RT_MAX_COMPRESSED_LENGTH+extra+mac_size)
enc_err = -1;
}
if (decryption_failed_or_bad_record_mac)
if (enc_err < 0)
{
/* A separate 'decryption_failed' alert was introduced with TLS 1.0,
* SSL 3.0 only has 'bad_record_mac'. But unless a decryption

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@@ -1005,7 +1005,7 @@ int ssl3_get_client_hello(SSL *s)
goto f_err;
}
}
if (ssl_check_clienthello_tlsext(s) <= 0) {
if (ssl_check_clienthello_tlsext_early(s) <= 0) {
SSLerr(SSL_F_SSL3_GET_CLIENT_HELLO,SSL_R_CLIENTHELLO_TLSEXT);
goto err;
}
@@ -1131,6 +1131,16 @@ int ssl3_get_client_hello(SSL *s)
* s->tmp.new_cipher - the new cipher to use.
*/
/* Handles TLS extensions that we couldn't check earlier */
if (s->version >= SSL3_VERSION)
{
if (ssl_check_clienthello_tlsext_late(s) <= 0)
{
SSLerr(SSL_F_SSL3_GET_CLIENT_HELLO,SSL_R_CLIENTHELLO_TLSEXT);
goto err;
}
}
if (ret < 0) ret=1;
if (0)
{

View File

@@ -1820,6 +1820,7 @@ void ERR_load_SSL_strings(void);
#define SSL_F_SSL_GET_NEW_SESSION 181
#define SSL_F_SSL_GET_PREV_SESSION 217
#define SSL_F_SSL_GET_SERVER_SEND_CERT 182
#define SSL_F_SSL_GET_SERVER_SEND_PKEY 317
#define SSL_F_SSL_GET_SIGN_PKEY 183
#define SSL_F_SSL_INIT_WBIO_BUFFER 184
#define SSL_F_SSL_LOAD_CLIENT_CA_FILE 185

View File

@@ -304,6 +304,10 @@ typedef struct ssl3_record_st
/*r */ unsigned char *comp; /* only used with decompression - malloc()ed */
/*r */ unsigned long epoch; /* epoch number, needed by DTLS1 */
/*r */ PQ_64BIT seq_num; /* sequence number, needed by DTLS1 */
/*rw*/ unsigned int orig_len; /* How many bytes were available before padding
was removed? This is used to implement the
MAC check in constant time for CBC records.
*/
} SSL3_RECORD;
typedef struct ssl3_buffer_st

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@@ -218,6 +218,7 @@ static ERR_STRING_DATA SSL_str_functs[]=
{ERR_FUNC(SSL_F_SSL_GET_NEW_SESSION), "SSL_GET_NEW_SESSION"},
{ERR_FUNC(SSL_F_SSL_GET_PREV_SESSION), "SSL_GET_PREV_SESSION"},
{ERR_FUNC(SSL_F_SSL_GET_SERVER_SEND_CERT), "SSL_GET_SERVER_SEND_CERT"},
{ERR_FUNC(SSL_F_SSL_GET_SERVER_SEND_PKEY), "SSL_GET_SERVER_SEND_PKEY"},
{ERR_FUNC(SSL_F_SSL_GET_SIGN_PKEY), "SSL_GET_SIGN_PKEY"},
{ERR_FUNC(SSL_F_SSL_INIT_WBIO_BUFFER), "SSL_INIT_WBIO_BUFFER"},
{ERR_FUNC(SSL_F_SSL_LOAD_CLIENT_CA_FILE), "SSL_load_client_CA_file"},

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@@ -1943,7 +1943,7 @@ int check_srvr_ecc_cert_and_alg(X509 *x, SSL_CIPHER *cs)
}
/* THIS NEEDS CLEANING UP */
X509 *ssl_get_server_send_cert(SSL *s)
CERT_PKEY *ssl_get_server_send_pkey(const SSL *s)
{
unsigned long alg,kalg;
CERT *c;
@@ -1993,12 +1993,20 @@ X509 *ssl_get_server_send_cert(SSL *s)
}
else /* if (kalg & SSL_aNULL) */
{
SSLerr(SSL_F_SSL_GET_SERVER_SEND_CERT,ERR_R_INTERNAL_ERROR);
SSLerr(SSL_F_SSL_GET_SERVER_SEND_PKEY,ERR_R_INTERNAL_ERROR);
return(NULL);
}
if (c->pkeys[i].x509 == NULL) return(NULL);
return(c->pkeys[i].x509);
return c->pkeys + i;
}
X509 *ssl_get_server_send_cert(const SSL *s)
{
CERT_PKEY *cpk;
cpk = ssl_get_server_send_pkey(s);
if (!cpk)
return NULL;
return cpk->x509;
}
EVP_PKEY *ssl_get_sign_pkey(SSL *s,SSL_CIPHER *cipher)
@@ -2420,7 +2428,9 @@ void ssl_clear_cipher_ctx(SSL *s)
/* Fix this function so that it takes an optional type parameter */
X509 *SSL_get_certificate(const SSL *s)
{
if (s->cert != NULL)
if (s->server)
return(ssl_get_server_send_cert(s));
else if (s->cert != NULL)
return(s->cert->key->x509);
else
return(NULL);

View File

@@ -189,6 +189,15 @@
*((c)++)=(unsigned char)(((l)>> 8)&0xff), \
*((c)++)=(unsigned char)(((l) )&0xff))
#define l2n8(l,c) (*((c)++)=(unsigned char)(((l)>>56)&0xff), \
*((c)++)=(unsigned char)(((l)>>48)&0xff), \
*((c)++)=(unsigned char)(((l)>>40)&0xff), \
*((c)++)=(unsigned char)(((l)>>32)&0xff), \
*((c)++)=(unsigned char)(((l)>>24)&0xff), \
*((c)++)=(unsigned char)(((l)>>16)&0xff), \
*((c)++)=(unsigned char)(((l)>> 8)&0xff), \
*((c)++)=(unsigned char)(((l) )&0xff))
#define n2l6(c,l) (l =((BN_ULLONG)(*((c)++)))<<40, \
l|=((BN_ULLONG)(*((c)++)))<<32, \
l|=((BN_ULLONG)(*((c)++)))<<24, \
@@ -740,7 +749,8 @@ int ssl_verify_cert_chain(SSL *s,STACK_OF(X509) *sk);
int ssl_undefined_function(SSL *s);
int ssl_undefined_void_function(void);
int ssl_undefined_const_function(const SSL *s);
X509 *ssl_get_server_send_cert(SSL *);
CERT_PKEY *ssl_get_server_send_pkey(const SSL *s);
X509 *ssl_get_server_send_cert(const SSL *);
EVP_PKEY *ssl_get_sign_pkey(SSL *,SSL_CIPHER *);
int ssl_cert_type(X509 *x,EVP_PKEY *pkey);
void ssl_set_cert_masks(CERT *c, SSL_CIPHER *cipher);
@@ -979,7 +989,8 @@ int ssl_parse_clienthello_tlsext(SSL *s, unsigned char **data, unsigned char *d,
int ssl_parse_serverhello_tlsext(SSL *s, unsigned char **data, unsigned char *d, int n, int *al);
int ssl_prepare_clienthello_tlsext(SSL *s);
int ssl_prepare_serverhello_tlsext(SSL *s);
int ssl_check_clienthello_tlsext(SSL *s);
int ssl_check_clienthello_tlsext_early(SSL *s);
int ssl_check_clienthello_tlsext_late(SSL *s);
int ssl_check_serverhello_tlsext(SSL *s);
#ifdef OPENSSL_NO_SHA256
@@ -1001,5 +1012,33 @@ int ssl_add_clienthello_renegotiate_ext(SSL *s, unsigned char *p, int *len,
int ssl_parse_clienthello_renegotiate_ext(SSL *s, unsigned char *d, int len,
int *al);
#endif
/* s3_cbc.c */
void ssl3_cbc_copy_mac(unsigned char* out,
const SSL3_RECORD *rec,
unsigned md_size);
int ssl3_cbc_remove_padding(const SSL* s,
SSL3_RECORD *rec,
unsigned block_size,
unsigned mac_size);
int tls1_cbc_remove_padding(const SSL* s,
SSL3_RECORD *rec,
unsigned block_size,
unsigned mac_size);
char ssl3_cbc_record_digest_supported(const EVP_MD *hash);
void ssl3_cbc_digest_record(
const EVP_MD *hash,
unsigned char* md_out,
size_t* md_out_size,
const unsigned char header[13],
const unsigned char *data,
size_t data_plus_mac_size,
size_t data_plus_mac_plus_padding_size,
const unsigned char *mac_secret,
unsigned mac_secret_length,
char is_sslv3);
void tls_fips_digest_extra(
const EVP_CIPHER_CTX *cipher_ctx, const EVP_MD *hash, HMAC_CTX *hctx,
const unsigned char *data, size_t data_len, size_t orig_len);
#endif

View File

@@ -264,7 +264,7 @@ int tls1_change_cipher_state(SSL *s, int which)
{
int ki;
for (ki=0; ki<s->s3->tmp.key_block_length; ki++)
printf("%02x", key_block[ki]); printf("\n");
printf("%02x", s->s3->tmp.key_block[ki]); printf("\n");
}
#endif /* KSSL_DEBUG */
@@ -528,12 +528,21 @@ err:
return(0);
}
/* tls1_enc encrypts/decrypts the record in |s->wrec| / |s->rrec|, respectively.
*
* Returns:
* 0: (in non-constant time) if the record is publically invalid (i.e. too
* short etc).
* 1: if the record's padding is valid / the encryption was successful.
* -1: if the record's padding/AEAD-authenticator is invalid or, if sending,
* an internal error occured.
*/
int tls1_enc(SSL *s, int send)
{
SSL3_RECORD *rec;
EVP_CIPHER_CTX *ds;
unsigned long l;
int bs,i,ii,j,k;
int bs,i,j,k,pad=0,ret,mac_size=0;
const EVP_CIPHER *enc;
if (send)
@@ -559,11 +568,11 @@ int tls1_enc(SSL *s, int send)
printf("tls1_enc(%d)\n", send);
#endif /* KSSL_DEBUG */
if ((s->session == NULL) || (ds == NULL) ||
(enc == NULL))
if ((s->session == NULL) || (ds == NULL) || (enc == NULL))
{
memmove(rec->data,rec->input,rec->length);
rec->input=rec->data;
ret = 1;
}
else
{
@@ -591,14 +600,13 @@ int tls1_enc(SSL *s, int send)
#ifdef KSSL_DEBUG
{
unsigned long ui;
unsigned long ui;
printf("EVP_Cipher(ds=%p,rec->data=%p,rec->input=%p,l=%ld) ==>\n",
(void *)ds,rec->data,rec->input,l);
printf("\tEVP_CIPHER_CTX: %d buf_len, %d key_len [%ld %ld], %d iv_len\n",
ds->buf_len, ds->cipher->key_len,
(unsigned long)DES_KEY_SZ,
(unsigned long)DES_SCHEDULE_SZ,
ds->cipher->iv_len);
ds,rec->data,rec->input,l);
printf("\tEVP_CIPHER_CTX: %d buf_len, %d key_len [%d %d], %d iv_len\n",
ds->buf_len, ds->cipher->key_len,
DES_KEY_SZ, DES_SCHEDULE_SZ,
ds->cipher->iv_len);
printf("\t\tIV: ");
for (i=0; i<ds->cipher->iv_len; i++) printf("%02X", ds->iv[i]);
printf("\n");
@@ -611,11 +619,7 @@ int tls1_enc(SSL *s, int send)
if (!send)
{
if (l == 0 || l%bs != 0)
{
SSLerr(SSL_F_TLS1_ENC,SSL_R_BLOCK_CIPHER_PAD_IS_WRONG);
ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECRYPTION_FAILED);
return 0;
}
}
EVP_Cipher(ds,rec->data,rec->input,l);
@@ -629,49 +633,15 @@ int tls1_enc(SSL *s, int send)
}
#endif /* KSSL_DEBUG */
ret = 1;
if (s->read_hash != NULL)
mac_size = EVP_MD_size(s->read_hash);
if ((bs != 1) && !send)
{
ii=i=rec->data[l-1]; /* padding_length */
i++;
/* NB: if compression is in operation the first packet
* may not be of even length so the padding bug check
* cannot be performed. This bug workaround has been
* around since SSLeay so hopefully it is either fixed
* now or no buggy implementation supports compression
* [steve]
*/
if ( (s->options&SSL_OP_TLS_BLOCK_PADDING_BUG)
&& !s->expand)
{
/* First packet is even in size, so check */
if ((memcmp(s->s3->read_sequence,
"\0\0\0\0\0\0\0\0",8) == 0) && !(ii & 1))
s->s3->flags|=TLS1_FLAGS_TLS_PADDING_BUG;
if (s->s3->flags & TLS1_FLAGS_TLS_PADDING_BUG)
i--;
}
/* TLS 1.0 does not bound the number of padding bytes by the block size.
* All of them must have value 'padding_length'. */
if (i > (int)rec->length)
{
/* Incorrect padding. SSLerr() and ssl3_alert are done
* by caller: we don't want to reveal whether this is
* a decryption error or a MAC verification failure
* (see http://www.openssl.org/~bodo/tls-cbc.txt) */
return -1;
}
for (j=(int)(l-i); j<(int)l; j++)
{
if (rec->data[j] != ii)
{
/* Incorrect padding */
return -1;
}
}
rec->length-=i;
}
ret = tls1_cbc_remove_padding(s, rec, bs, mac_size);
if (pad && !send)
rec->length -= pad;
}
return(1);
return ret;
}
int tls1_cert_verify_mac(SSL *s, EVP_MD_CTX *in_ctx, unsigned char *out)
@@ -719,10 +689,10 @@ int tls1_mac(SSL *ssl, unsigned char *md, int send)
SSL3_RECORD *rec;
unsigned char *mac_sec,*seq;
const EVP_MD *hash;
unsigned int md_size;
size_t md_size;
int i;
HMAC_CTX hmac;
unsigned char buf[5];
unsigned char header[13];
if (send)
{
@@ -741,20 +711,6 @@ int tls1_mac(SSL *ssl, unsigned char *md, int send)
md_size=EVP_MD_size(hash);
buf[0]=rec->type;
if (ssl->version == DTLS1_VERSION && ssl->client_version == DTLS1_BAD_VER)
{
buf[1]=TLS1_VERSION_MAJOR;
buf[2]=TLS1_VERSION_MINOR;
}
else {
buf[1]=(unsigned char)(ssl->version>>8);
buf[2]=(unsigned char)(ssl->version);
}
buf[3]=rec->length>>8;
buf[4]=rec->length&0xff;
/* I should fix this up TLS TLS TLS TLS TLS XXXXXXXX */
HMAC_CTX_init(&hmac);
HMAC_Init_ex(&hmac,mac_sec,EVP_MD_size(hash),hash,NULL);
@@ -766,16 +722,53 @@ int tls1_mac(SSL *ssl, unsigned char *md, int send)
s2n(send?ssl->d1->w_epoch:ssl->d1->r_epoch, p);
memcpy (p,&seq[2],6);
HMAC_Update(&hmac,dtlsseq,8);
memcpy(header, dtlsseq, 8);
}
else
HMAC_Update(&hmac,seq,8);
memcpy(header, seq, 8);
HMAC_Update(&hmac,buf,5);
HMAC_Update(&hmac,rec->input,rec->length);
HMAC_Final(&hmac,md,&md_size);
header[8]=rec->type;
header[9]=(unsigned char)(ssl->version>>8);
header[10]=(unsigned char)(ssl->version);
header[11]=(rec->length)>>8;
header[12]=(rec->length)&0xff;
if (!send &&
EVP_CIPHER_CTX_mode(ssl->enc_read_ctx) == EVP_CIPH_CBC_MODE &&
ssl3_cbc_record_digest_supported(hash))
{
/* This is a CBC-encrypted record. We must avoid leaking any
* timing-side channel information about how many blocks of
* data we are hashing because that gives an attacker a
* timing-oracle. */
ssl3_cbc_digest_record(
hash,
md, &md_size,
header, rec->input,
rec->length + md_size, rec->orig_len,
ssl->s3->read_mac_secret,
EVP_MD_size(ssl->read_hash),
0 /* not SSLv3 */);
}
else
{
unsigned mds;
HMAC_Update(&hmac,header,sizeof(header));
HMAC_Update(&hmac,rec->input,rec->length);
HMAC_Final(&hmac,md,&mds);
md_size = mds;
#ifdef OPENSSL_FIPS
if (!send && FIPS_mode())
tls_fips_digest_extra(
ssl->enc_read_ctx,
hash,
&hmac, rec->input,
rec->length, rec->orig_len);
#endif
}
HMAC_CTX_cleanup(&hmac);
#ifdef TLS_DEBUG
printf("sec=");
{unsigned int z; for (z=0; z<md_size; z++) printf("%02X ",mac_sec[z]); printf("\n"); }

View File

@@ -745,7 +745,7 @@ int ssl_parse_serverhello_tlsext(SSL *s, unsigned char **p, unsigned char *d, in
return 1;
}
int ssl_check_clienthello_tlsext(SSL *s)
int ssl_check_clienthello_tlsext_early(SSL *s)
{
int ret=SSL_TLSEXT_ERR_NOACK;
int al = SSL_AD_UNRECOGNIZED_NAME;
@@ -755,13 +755,49 @@ int ssl_check_clienthello_tlsext(SSL *s)
else if (s->initial_ctx != NULL && s->initial_ctx->tlsext_servername_callback != 0)
ret = s->initial_ctx->tlsext_servername_callback(s, &al, s->initial_ctx->tlsext_servername_arg);
switch (ret)
{
case SSL_TLSEXT_ERR_ALERT_FATAL:
ssl3_send_alert(s, SSL3_AL_FATAL, al);
return -1;
case SSL_TLSEXT_ERR_ALERT_WARNING:
ssl3_send_alert(s, SSL3_AL_WARNING, al);
return 1;
case SSL_TLSEXT_ERR_NOACK:
s->servername_done = 0;
default:
return 1;
}
}
int ssl_check_clienthello_tlsext_late(SSL *s)
{
int ret = SSL_TLSEXT_ERR_OK;
int al;
/* If status request then ask callback what to do.
* Note: this must be called after servername callbacks in case
* the certificate has changed.
* the certificate has changed, and must be called after the cipher
* has been chosen because this may influence which certificate is sent
*/
if ((s->tlsext_status_type != -1) && s->ctx->tlsext_status_cb)
if (s->tlsext_status_type != -1 && s->ctx && s->ctx->tlsext_status_cb)
{
int r;
CERT_PKEY *certpkey;
certpkey = ssl_get_server_send_pkey(s);
/* If no certificate can't return certificate status */
if (certpkey == NULL)
{
s->tlsext_status_expected = 0;
return 1;
}
/* Set current certificate to one we will use so
* SSL_get_certificate et al can pick it up.
*/
s->cert->key = certpkey;
r = s->ctx->tlsext_status_cb(s, s->ctx->tlsext_status_arg);
switch (r)
{
@@ -785,7 +821,8 @@ int ssl_check_clienthello_tlsext(SSL *s)
}
else
s->tlsext_status_expected = 0;
err:
err:
switch (ret)
{
case SSL_TLSEXT_ERR_ALERT_FATAL:
@@ -795,11 +832,9 @@ int ssl_check_clienthello_tlsext(SSL *s)
case SSL_TLSEXT_ERR_ALERT_WARNING:
ssl3_send_alert(s,SSL3_AL_WARNING,al);
return 1;
case SSL_TLSEXT_ERR_NOACK:
s->servername_done=0;
default:
return 1;
default:
return 1;
}
}
@@ -977,7 +1012,7 @@ static int tls_decrypt_ticket(SSL *s, const unsigned char *etick, int eticklen,
HMAC_Update(&hctx, etick, eticklen);
HMAC_Final(&hctx, tick_hmac, NULL);
HMAC_CTX_cleanup(&hctx);
if (memcmp(tick_hmac, etick + eticklen, mlen))
if (CRYPTO_memcmp(tick_hmac, etick + eticklen, mlen))
goto tickerr;
/* Attempt to decrypt session data */
/* Move p after IV to start of encrypted ticket, update length */

View File

@@ -3510,6 +3510,7 @@ BIO_get_callback_arg 3902 EXIST::FUNCTION:
BIO_set_callback 3903 EXIST::FUNCTION:
d2i_ASIdOrRange 3904 EXIST::FUNCTION:RFC3779
i2d_ASIdentifiers 3905 EXIST::FUNCTION:RFC3779
CRYPTO_memcmp 3906 EXIST::FUNCTION:
SEED_decrypt 3908 EXIST::FUNCTION:SEED
SEED_encrypt 3909 EXIST::FUNCTION:SEED
SEED_cbc_encrypt 3910 EXIST::FUNCTION:SEED