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69e2ec63c5
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21 Commits

Author SHA1 Message Date
Dr. Stephen Henson
69e2ec63c5 Reorganise ECC code so it can use FIPS module. 
Move compression, point2oct and oct2point functions into separate files.

Add a flags field to EC_METHOD.

Add a flag EC_FLAGS_DEFAULT_OCT to use the default compession and oct functions
(all existing methods do this). This removes dependencies from EC_METHOD while
keeping original functionality.

Backport from HEAD with minor changes.
 2011-06-06 12:54:51 +00:00
Dr. Stephen Henson
f610a516a0 Backport from HEAD: 
New option to disable characteristic two fields in EC code.

Make no-ec2m work on Win32 build.
 2011-06-06 11:49:36 +00:00
Dr. Stephen Henson
913488c066 PR: 1612 
Submitted by: Robert Jackson <robert@rjsweb.net>
Reviewed by: steve

Fix EC_POINT_cmp function for case where b but not a is the point at infinity.
 2011-01-24 14:41:49 +00:00
Bodo Möller
7fe747d1eb Always check bn_wexpend() return values for failure (CVE-2009-3245). 
(The CHANGES entry covers the change from PR #2111 as well, submitted by
Martin Olsson.)

Submitted by: Neel Mehta
 2010-02-23 10:36:30 +00:00
Bodo Möller
c4e7870ac1 Change array representation of binary polynomials to make GF2m part of 
the BN library more generally useful.

Submitted by: Douglas Stebila
 2006-06-18 22:00:57 +00:00
Nils Larsch
47d5566646 fix error found by coverity: check if ctx is != NULL before calling BN_CTX_end() 2006-03-13 23:14:57 +00:00
Bodo Möller
8dee9f844f deFUDify: don't require OPENSSL_EC_BIN_PT_COMP 2005-11-15 21:08:38 +00:00
Nils Larsch
ff22e913a3 - use BN_set_negative and BN_is_negative instead of BN_set_sign 
and BN_get_sign
- implement BN_set_negative as a function
- always use "#define BN_is_zero(a) ((a)->top == 0)"
 2005-04-22 20:02:44 +00:00
Geoff Thorpe
7f5b4dd1e8 Using Horner's algorithm to evaluate the ec polynomial 
(suggested by Adam Young <ayoung@cigital.com>)

Submitted by: Nils Larsch
 2004-07-16 03:24:19 +00:00
Richard Levitte
560f7abb7e Make sure we use unsigned constants, or come compilers may complain. 2004-03-15 22:33:19 +00:00
Geoff Thorpe
b6358c89a1 Convert openssl code not to assume the deprecated form of BN_zero(). 
Remove certain redundant BN_zero() initialisations, because BN_CTX_get(),
BN_init(), [etc] already initialise to zero.

Correct error checking in bn_sqr.c, and be less wishy-wash about how/why
the result's 'top' value is set (note also, 'max' is always > 0 at this
point).
 2004-03-13 23:57:20 +00:00
Bodo Möller
37c660ff9b implement fast point multiplication with precomputation 
Submitted by: Nils Larsch
Reviewed by: Bodo Moeller
 2003-02-06 19:25:12 +00:00
Bodo Möller
9b3f03d5a2 fix warnings 
Submitted by: Nils Larsch
 2003-01-21 09:53:14 +00:00
Bodo Möller
15994b034a rename some functions to improve consistency 
Submitted by: Sheueling Chang
 2002-11-23 18:16:09 +00:00
Bodo Möller
b53e44e572 implement and use new macros BN_get_sign(), BN_set_sign() 
Submitted by: Nils Larsch
 2002-11-04 13:17:22 +00:00
Bodo Möller
259cdf2af9 Sun has agreed to removing the covenant language from most files. 
Submitted by: Sheueling Chang <Sheueling.Chang@Sun.COM>
 2002-10-29 10:59:32 +00:00
Bodo Möller
f72ed6153b remove superfluous code 
Submitted by: Nils Larsch
 2002-10-28 13:19:08 +00:00
Bodo Möller
4c8f79a33e make sure 'neg' flag (which does not really matter for GF(2^m), but 
could cause confusion for ECDSA) is set to zero

Submitted by: Sheueling Chang
 2002-09-16 13:52:48 +00:00
Bodo Möller
34f1f2a81c less specific interface for EC_GROUP_get_basis_type 
Submitted by: Nils Larsch, Bodo Moeller
 2002-08-26 18:08:53 +00:00
Bodo Möller
35b73a1f20 Rename implementations of method functions so that they match 
the new method names where _GF... suffixes have been removed.

Revert changes to ..._{get/set}_Jprojective_coordinates_...:
The current implementation for ECC over binary fields does not use
projective coordinates, and if it did, it would not use Jacobian
projective coordinates; so it's OK to use the ..._GFp prefix for all
this.

Add author attributions to some files so that it doesn't look
as if Sun wrote all of this :-)
 2002-08-02 14:28:37 +00:00
Bodo Möller
7793f30e09 add support for elliptic curves over binary fields 
Submitted by: Duglas Stebila <douglas.stebila@sun.com>,
              Sheueling Chang <sheueling.chang@sun.com>

(CHANGES entries by Bodo Moeller)
 2002-08-02 13:42:24 +00:00