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[trac936] always fail on secret_len == 0

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This commit is contained in:
Jelte Jansen
2011-05-18 21:10:06 +02:00
parent 71eb80242f
commit 89e3ffaa1f
1 changed files with 2 additions and 4 deletions
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6
src/lib/cryptolink/crypto_hmac.cc
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@@ -88,13 +88,11 @@ public:
secret_len);
hmac_->set_key(hashed_key.begin(), hashed_key.size());
} else {
// Apparently 1.9 considers 0 a valid secret length.
// We do not.
#if BOTAN_VERSION_CODE >= BOTAN_VERSION_CODE_FOR(1,9,0)
// Botan 1.8 considers len 0 a bad key. 1.9 does not,
// but we won't accept it anyway, and fail early
if (secret_len == 0) {
isc_throw(BadKey, "Bad HMAC secret length: 0");
}
#endif
hmac_->set_key(static_cast<const Botan::byte*>(secret),
secret_len);
}