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Fix a memory leak in RSA_padding_add_PKCS1_OAEP_mgf1

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Signed-off-by: Kurt Roeckx <kurt@roeckx.be>
Reviewed-by: Matt Caswell <matt@openssl.org>
GH: #2140
(cherry picked from commit c6d215e0d278fcd51ad474a3647b61e1b67290bb)
This commit is contained in:
Bernd Edlinger 2016-12-23 14:35:16 +01:00 committed by Kurt Roeckx
parent 3dca6ca0df
commit db2fed4443
1 changed files with 6 additions and 2 deletions
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8
crypto/rsa/rsa_oaep.c
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@ -91,17 +91,21 @@ int RSA_padding_add_PKCS1_OAEP_mgf1(unsigned char *to, int tlen,
}
if (PKCS1_MGF1(dbmask, emlen - mdlen, seed, mdlen, mgf1md) < 0)
return 0;
goto err;
for (i = 0; i < emlen - mdlen; i++)
db[i] ^= dbmask[i];
if (PKCS1_MGF1(seedmask, mdlen, db, emlen - mdlen, mgf1md) < 0)
return 0;
goto err;
for (i = 0; i < mdlen; i++)
seed[i] ^= seedmask[i];
OPENSSL_free(dbmask);
return 1;
err:
OPENSSL_free(dbmask);
return 0;
}
int RSA_padding_check_PKCS1_OAEP(unsigned char *to, int tlen,