diff options
Diffstat (limited to 'libparc/parc/security/parc_SymmetricKeySigner.c')
| -rw-r--r-- | libparc/parc/security/parc_SymmetricKeySigner.c | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/libparc/parc/security/parc_SymmetricKeySigner.c b/libparc/parc/security/parc_SymmetricKeySigner.c index bfb98e42..5c2db778 100644 --- a/libparc/parc/security/parc_SymmetricKeySigner.c +++ b/libparc/parc/security/parc_SymmetricKeySigner.c @@ -261,7 +261,7 @@ _GetSignatureSize(PARCSymmetricKeySigner *signer) * @param hashToSign is the HMAC computed by the our PARCCryptoHasher. */ static PARCSignature * -_signDigest(PARCSymmetricKeySigner *interfaceContext, const PARCCryptoHash *hashToSign, uint8_t * signature, uint32_t sig_len) +_signDigestNoAlloc(PARCSymmetricKeySigner *interfaceContext, const PARCCryptoHash *hashToSign, uint8_t * signature, uint32_t sig_len) { // The digest computed via our hash function (hmac) is the actual signature. // just need to wrap it up with the right parameters. @@ -271,10 +271,27 @@ _signDigest(PARCSymmetricKeySigner *interfaceContext, const PARCCryptoHash *hash return result; } +/** + * wrap the HMAC in digestToSign in a PARCSignature. Allocate the buffer for the hash. + * + * @param hashToSign is the HMAC computed by the our PARCCryptoHasher. + */ +static PARCSignature * +_signDigest(PARCSymmetricKeySigner *interfaceContext, const PARCCryptoHash *hashToSign) +{ + // The digest computed via our hash function (hmac) is the actual signature. + // just need to wrap it up with the right parameters. + PARCBuffer *signatureBits = parcBuffer_Copy(parcCryptoHash_GetDigest(hashToSign)); + PARCSignature *result = parcSignature_Create(_getSigningAlgorithm(interfaceContext), parcCryptoHash_GetDigestType(hashToSign), signatureBits); + parcBuffer_Release(&signatureBits); + return result; +} + PARCSigningInterface *PARCSymmetricKeySignerAsSigner = &(PARCSigningInterface) { .GetCryptoHashType = (PARCCryptoHashType (*)(void *))_getCryptoHashType, .GetCryptoHasher = (PARCCryptoHasher * (*)(void *))_getCryptoHasher, - .SignDigest = (PARCSignature * (*)(void *, const PARCCryptoHash *, uint8_t *, uint32_t))_signDigest, + .SignDigestNoAlloc = (PARCSignature * (*)(void *, const PARCCryptoHash *, uint8_t *, uint32_t))_signDigestNoAlloc, + .SignDigest = (PARCSignature * (*)(void *, const PARCCryptoHash *))_signDigest, .GetSigningAlgorithm = (PARCSigningAlgorithm (*)(void *))_getSigningAlgorithm, .GetKeyStore = (PARCKeyStore * (*)(void *))_getKeyStore, .GetSignatureSize = (size_t (*)(void *))_GetSignatureSize |