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Change PKCS#12 key derivation routines to cope with

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non null terminated passwords.
This commit is contained in:
Dr. Stephen Henson 2001-01-14 14:07:10 +00:00
parent 8e5b6314ef
commit 6308af199d
5 changed files with 19 additions and 9 deletions
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6
CHANGES
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@ -3,6 +3,12 @@
Changes between 0.9.6 and 0.9.7 [xx XXX 2000] Changes between 0.9.6 and 0.9.7 [xx XXX 2000]
*) Change PKCS12_key_gen_asc() so it can cope with non null
terminated strings whose length is passed in the passlen
parameter, for example from PEM callbacks. This was done
by adding an extra length parameter to asc2uni().
[Steve Henson, reported by <oddissey@samsung.co.kr>]
*) New OCSP utility. Allows OCSP requests to be generated or *) New OCSP utility. Allows OCSP requests to be generated or
read. The request can be sent to a responder and the output read. The request can be sent to a responder and the output
parsed, outputed or printed in text form. Not complete yet: parsed, outputed or printed in text form. Not complete yet:

2
crypto/pkcs12/p12_attr.c
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@ -151,7 +151,7 @@ int PKCS12_add_friendlyname_asc (PKCS12_SAFEBAG *bag, const char *name,
{ {
unsigned char *uniname; unsigned char *uniname;
int ret, unilen; int ret, unilen;
if (!asc2uni(name, &uniname, &unilen)) { if (!asc2uni(name, namelen, &uniname, &unilen)) {
PKCS12err(PKCS12_F_PKCS12_ADD_FRIENDLYNAME_ASC, PKCS12err(PKCS12_F_PKCS12_ADD_FRIENDLYNAME_ASC,
ERR_R_MALLOC_FAILURE); ERR_R_MALLOC_FAILURE);
return 0; return 0;

2
crypto/pkcs12/p12_key.c
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@ -84,7 +84,7 @@ int PKCS12_key_gen_asc(const char *pass, int passlen, unsigned char *salt,
if(!pass) { if(!pass) {
unipass = NULL; unipass = NULL;
uniplen = 0; uniplen = 0;
} else if (!asc2uni(pass, &unipass, &uniplen)) { } else if (!asc2uni(pass, passlen, &unipass, &uniplen)) {
PKCS12err(PKCS12_F_PKCS12_KEY_GEN_ASC,ERR_R_MALLOC_FAILURE); PKCS12err(PKCS12_F_PKCS12_KEY_GEN_ASC,ERR_R_MALLOC_FAILURE);
return 0; return 0;
} }

16
crypto/pkcs12/p12_utl.c
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@ -62,22 +62,26 @@
/* Cheap and nasty Unicode stuff */ /* Cheap and nasty Unicode stuff */
unsigned char *asc2uni (const char *asc, unsigned char **uni, int *unilen) unsigned char *asc2uni(const char *asc, int asclen, unsigned char **uni, int *unilen)
{ {
int ulen, i; int ulen, i;
unsigned char *unitmp; unsigned char *unitmp;
ulen = strlen(asc)*2 + 2; if (asclen == -1) asclen = strlen(asc);
if (!(unitmp = OPENSSL_malloc (ulen))) return NULL; ulen = asclen*2 + 2;
for (i = 0; i < ulen; i+=2) { if (!(unitmp = OPENSSL_malloc(ulen))) return NULL;
for (i = 0; i < ulen - 2; i+=2) {
unitmp[i] = 0; unitmp[i] = 0;
unitmp[i + 1] = asc[i>>1]; unitmp[i + 1] = asc[i>>1];
} }
/* Make result double null terminated */
unitmp[ulen - 2] = 0;
unitmp[ulen - 1] = 0;
if (unilen) *unilen = ulen; if (unilen) *unilen = ulen;
if (uni) *uni = unitmp; if (uni) *uni = unitmp;
return unitmp; return unitmp;
} }
char *uni2asc (unsigned char *uni, int unilen) char *uni2asc(unsigned char *uni, int unilen)
{ {
int asclen, i; int asclen, i;
char *asctmp; char *asctmp;
@ -85,7 +89,7 @@ char *uni2asc (unsigned char *uni, int unilen)
/* If no terminating zero allow for one */ /* If no terminating zero allow for one */
if (!unilen || uni[unilen - 1]) asclen++; if (!unilen || uni[unilen - 1]) asclen++;
uni++; uni++;
if (!(asctmp = OPENSSL_malloc (asclen))) return NULL; if (!(asctmp = OPENSSL_malloc(asclen))) return NULL;
for (i = 0; i < unilen; i+=2) asctmp[i>>1] = uni[i]; for (i = 0; i < unilen; i+=2) asctmp[i>>1] = uni[i];
asctmp[asclen - 1] = 0; asctmp[asclen - 1] = 0;
return asctmp; return asctmp;

2
crypto/pkcs12/pkcs12.h
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@ -230,7 +230,7 @@ int PKCS12_set_mac(PKCS12 *p12, const char *pass, int passlen,
EVP_MD *md_type); EVP_MD *md_type);
int PKCS12_setup_mac(PKCS12 *p12, int iter, unsigned char *salt, int PKCS12_setup_mac(PKCS12 *p12, int iter, unsigned char *salt,
int saltlen, EVP_MD *md_type); int saltlen, EVP_MD *md_type);
unsigned char *asc2uni(const char *asc, unsigned char **uni, int *unilen); unsigned char *asc2uni(const char *asc, int asclen, unsigned char **uni, int *unilen);
char *uni2asc(unsigned char *uni, int unilen); char *uni2asc(unsigned char *uni, int unilen);
DECLARE_ASN1_FUNCTIONS(PKCS12) DECLARE_ASN1_FUNCTIONS(PKCS12)