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authormarha <marha@users.sourceforge.net>2010-03-29 17:08:02 +0000
committermarha <marha@users.sourceforge.net>2010-03-29 17:08:02 +0000
commit15272ab4ed1e6250412fccd48200ed9eae59608f (patch)
treea5996ea67966a778a16565f19dfc2e7c7f49b376 /openssl/crypto/rsa/rsa_oaep.c
parent3827301b2ea5a45ac009c3bf9f08586ff40b8506 (diff)
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Updated to openssl 1.0.0
Diffstat (limited to 'openssl/crypto/rsa/rsa_oaep.c')
-rw-r--r--openssl/crypto/rsa/rsa_oaep.c35
1 files changed, 21 insertions, 14 deletions
diff --git a/openssl/crypto/rsa/rsa_oaep.c b/openssl/crypto/rsa/rsa_oaep.c
index 4d30c9d2d..e238d10e5 100644
--- a/openssl/crypto/rsa/rsa_oaep.c
+++ b/openssl/crypto/rsa/rsa_oaep.c
@@ -28,7 +28,7 @@
#include <openssl/rand.h>
#include <openssl/sha.h>
-int MGF1(unsigned char *mask, long len,
+static int MGF1(unsigned char *mask, long len,
const unsigned char *seed, long seedlen);
int RSA_padding_add_PKCS1_OAEP(unsigned char *to, int tlen,
@@ -52,13 +52,6 @@ int RSA_padding_add_PKCS1_OAEP(unsigned char *to, int tlen,
return 0;
}
- dbmask = OPENSSL_malloc(emlen - SHA_DIGEST_LENGTH);
- if (dbmask == NULL)
- {
- RSAerr(RSA_F_RSA_PADDING_ADD_PKCS1_OAEP, ERR_R_MALLOC_FAILURE);
- return 0;
- }
-
to[0] = 0;
seed = to + 1;
db = to + SHA_DIGEST_LENGTH + 1;
@@ -76,11 +69,20 @@ int RSA_padding_add_PKCS1_OAEP(unsigned char *to, int tlen,
20);
#endif
- MGF1(dbmask, emlen - SHA_DIGEST_LENGTH, seed, SHA_DIGEST_LENGTH);
+ dbmask = OPENSSL_malloc(emlen - SHA_DIGEST_LENGTH);
+ if (dbmask == NULL)
+ {
+ RSAerr(RSA_F_RSA_PADDING_ADD_PKCS1_OAEP, ERR_R_MALLOC_FAILURE);
+ return 0;
+ }
+
+ if (MGF1(dbmask, emlen - SHA_DIGEST_LENGTH, seed, SHA_DIGEST_LENGTH) < 0)
+ return 0;
for (i = 0; i < emlen - SHA_DIGEST_LENGTH; i++)
db[i] ^= dbmask[i];
- MGF1(seedmask, SHA_DIGEST_LENGTH, db, emlen - SHA_DIGEST_LENGTH);
+ if (MGF1(seedmask, SHA_DIGEST_LENGTH, db, emlen - SHA_DIGEST_LENGTH) < 0)
+ return 0;
for (i = 0; i < SHA_DIGEST_LENGTH; i++)
seed[i] ^= seedmask[i];
@@ -133,11 +135,13 @@ int RSA_padding_check_PKCS1_OAEP(unsigned char *to, int tlen,
maskeddb = padded_from + SHA_DIGEST_LENGTH;
- MGF1(seed, SHA_DIGEST_LENGTH, maskeddb, dblen);
+ if (MGF1(seed, SHA_DIGEST_LENGTH, maskeddb, dblen))
+ return -1;
for (i = 0; i < SHA_DIGEST_LENGTH; i++)
seed[i] ^= padded_from[i];
- MGF1(db, dblen, seed, SHA_DIGEST_LENGTH);
+ if (MGF1(db, dblen, seed, SHA_DIGEST_LENGTH))
+ return -1;
for (i = 0; i < dblen; i++)
db[i] ^= maskeddb[i];
@@ -187,7 +191,9 @@ int PKCS1_MGF1(unsigned char *mask, long len,
int mdlen;
EVP_MD_CTX_init(&c);
- mdlen = M_EVP_MD_size(dgst);
+ mdlen = EVP_MD_size(dgst);
+ if (mdlen < 0)
+ return -1;
for (i = 0; outlen < len; i++)
{
cnt[0] = (unsigned char)((i >> 24) & 255);
@@ -213,7 +219,8 @@ int PKCS1_MGF1(unsigned char *mask, long len,
return 0;
}
-int MGF1(unsigned char *mask, long len, const unsigned char *seed, long seedlen)
+static int MGF1(unsigned char *mask, long len, const unsigned char *seed,
+ long seedlen)
{
return PKCS1_MGF1(mask, len, seed, seedlen, EVP_sha1());
}