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make ConstantCompare available outside of internal.c

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This commit is contained in:
toddouska
2015-02-26 17:31:47 -08:00
parent 6cced22256
commit b7db43a189
5 changed files with 21 additions and 33 deletions
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4
wolfcrypt/src/aes.c
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@@ -3408,7 +3408,7 @@ int wc_AesGcmDecrypt(Aes* aes, byte* out, const byte* in, word32 sz,
#endif
xorbuf(Tprime, EKY0, sizeof(Tprime));
if (XMEMCMP(authTag, Tprime, authTagSz) != 0) {
if (ConstantCompare(authTag, Tprime, authTagSz) != 0) {
return AES_GCM_AUTH_E;
}
}
@@ -3744,7 +3744,7 @@ int wc_AesCcmDecrypt(Aes* aes, byte* out, const byte* in, word32 inSz,
#endif
xorbuf(A, B, authTagSz);
if (XMEMCMP(A, authTag, authTagSz) != 0) {
if (ConstantCompare(A, authTag, authTagSz) != 0) {
/* If the authTag check fails, don't keep the decrypted data.
* Unfortunately, you need the decrypted data to calculate the
* check value. */