diff options
| author | Dr. Stephen Henson <steve@openssl.org> | 2011-06-03 20:53:00 +0000 |
|---|---|---|
| committer | Dr. Stephen Henson <steve@openssl.org> | 2011-06-03 20:53:00 +0000 |
| commit | 24d7159abd5e8a3fb5a75167e01b24230fb0874b (patch) | |
| tree | 16bdf4ef0a62f645b5954de9a6bc137e38d79c83 /crypto/dsa | |
| parent | 7978dc989d09061913ce14a23a97c8c5f1821cdb (diff) | |
Backport libcrypto audit: check return values of EVP functions instead
of assuming they will always suceed.
Diffstat (limited to 'crypto/dsa')
| -rw-r--r-- | crypto/dsa/dsa_gen.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/crypto/dsa/dsa_gen.c b/crypto/dsa/dsa_gen.c index e509dc94e8..e6a5452016 100644 --- a/crypto/dsa/dsa_gen.c +++ b/crypto/dsa/dsa_gen.c @@ -202,8 +202,10 @@ int dsa_builtin_paramgen(DSA *ret, size_t bits, size_t qbits, } /* step 2 */ - EVP_Digest(seed, qsize, md, NULL, evpmd, NULL); - EVP_Digest(buf, qsize, buf2, NULL, evpmd, NULL); + if (!EVP_Digest(seed, qsize, md, NULL, evpmd, NULL)) + goto err; + if (!EVP_Digest(buf, qsize, buf2, NULL, evpmd, NULL)) + goto err; for (i = 0; i < qsize; i++) md[i]^=buf2[i]; @@ -252,7 +254,9 @@ int dsa_builtin_paramgen(DSA *ret, size_t bits, size_t qbits, break; } - EVP_Digest(buf, qsize, md ,NULL, evpmd, NULL); + if (!EVP_Digest(buf, qsize, md ,NULL, evpmd, + NULL)) + goto err; /* step 8 */ if (!BN_bin2bn(md, qsize, r0)) |