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| author | Ulf Möller <ulf@openssl.org> | 2001-06-06 17:23:23 +0000 |
|---|---|---|
| committer | Ulf Möller <ulf@openssl.org> | 2001-06-06 17:23:23 +0000 |
| commit | 8ca2ae775d418b44b0206788744ca0e5f5d9dc3d (patch) | |
| tree | 3badfa8b3ebdd76405eebae212eb1dc94d98c1e9 /crypto/rsa/rsa_oaep.c | |
| parent | ee8aa8217abc66c7d5d280960755a0180a20757d (diff) | |
| download | openssl-8ca2ae775d418b44b0206788744ca0e5f5d9dc3d.zip openssl-8ca2ae775d418b44b0206788744ca0e5f5d9dc3d.tar.gz openssl-8ca2ae775d418b44b0206788744ca0e5f5d9dc3d.tar.bz2 | |
move check to avoid memory leak.
Diffstat (limited to 'crypto/rsa/rsa_oaep.c')
| -rw-r--r-- | crypto/rsa/rsa_oaep.c | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/crypto/rsa/rsa_oaep.c b/crypto/rsa/rsa_oaep.c index a3361dc..64b59ee 100644 --- a/crypto/rsa/rsa_oaep.c +++ b/crypto/rsa/rsa_oaep.c @@ -102,6 +102,14 @@ int RSA_padding_check_PKCS1_OAEP(unsigned char *to, int tlen, return (-1); } + lzero = num - flen; + if (lzero < 0) + { + RSAerr(RSA_F_RSA_PADDING_CHECK_PKCS1_OAEP, RSA_R_OAEP_DECODING_ERROR); + return (-1); + } + maskeddb = from - lzero + SHA_DIGEST_LENGTH; + dblen = num - SHA_DIGEST_LENGTH; db = OPENSSL_malloc(dblen); if (db == NULL) @@ -110,14 +118,6 @@ int RSA_padding_check_PKCS1_OAEP(unsigned char *to, int tlen, return (-1); } - lzero = num - flen; - if (lzero < 0) - { - RSAerr(RSA_F_RSA_PADDING_CHECK_PKCS1_OAEP, RSA_R_OAEP_DECODING_ERROR); - return (-1); - } - maskeddb = from - lzero + SHA_DIGEST_LENGTH; - MGF1(seed, SHA_DIGEST_LENGTH, maskeddb, dblen); for (i = lzero; i < SHA_DIGEST_LENGTH; i++) seed[i] ^= from[i - lzero]; |