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/*
* Copyright (c) 2017 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
*/
#include <config.h>
#include <parc/assert/parc_Assert.h>
#include <parc/security/parc_CryptoSuite.h>
#include <parc/security/parc_SigningAlgorithm.h>
PARCCryptoHashType
parcCryptoSuite_GetCryptoHash(PARCCryptoSuite suite)
{
switch (suite) {
case PARCCryptoSuite_DSA_SHA256: // fallthrough
case PARCCryptoSuite_HMAC_SHA256: // fallthrough
case PARCCryptoSuite_RSA_SHA256: // fallthrough
case PARCCryptoSuite_ECDSA_SHA256:
return PARCCryptoHashType_SHA256;
case PARCCryptoSuite_HMAC_SHA512: // fallthrough
case PARCCryptoSuite_RSA_SHA512:
return PARCCryptoHashType_SHA512;
case PARCCryptoSuite_NULL_CRC32C:
return PARCCryptoHashType_CRC32C;
default:
parcTrapIllegalValue(suite, "Unknown crypto suite: %d", suite);
return PARCCryptoHashType_NULL;
}
}
int
parcCryptoSuite_GetSignatureSizeBytes(PARCCryptoSuite suite, int keyLengthBits)
{
int keyLengthBytes = keyLengthBits >> 3;
switch (suite) {
case PARCCryptoSuite_DSA_SHA256: // fallthrough
case PARCCryptoSuite_RSA_SHA256: // fallthrough
case PARCCryptoSuite_RSA_SHA512:
return keyLengthBytes;
case PARCCryptoSuite_ECDSA_SHA256:
return keyLengthBytes*2 + 8; //Overhead added by ECDSA
case PARCCryptoSuite_HMAC_SHA256: // fallthrough
case PARCCryptoSuite_HMAC_SHA512: // fallthrough
return 64;
case PARCCryptoSuite_NULL_CRC32C:
return 4;
default:
parcTrapIllegalValue(suite, "Unknown crypto suite: %d", suite);
return -1;
}
}
PARCCryptoSuite parcCryptoSuite_GetFromSigningHash(PARCSigningAlgorithm signAlgo, PARCCryptoHashType hash) {
switch (signAlgo) {
case PARCSigningAlgorithm_DSA:
return PARCCryptoSuite_DSA_SHA256 + hash;
case PARCSigningAlgorithm_RSA:
return PARCCryptoSuite_RSA_SHA256 + hash;
case PARCSigningAlgorithm_ECDSA:
return PARCCryptoSuite_ECDSA_SHA256 + hash;
case PARCSigningAlgorithm_NULL:
return PARCCryptoSuite_NULL_CRC32C;
default:
parcTrapIllegalValue(suite, "Unknown signing algorithm suite: %d", signAlgo);
return PARCSigningAlgorithm_UNKNOWN;
}
}
PARCSigningAlgorithm
parcCryptoSuite_GetSigningAlgorithm(PARCCryptoSuite suite)
{
switch (suite) {
case PARCCryptoSuite_DSA_SHA256:
return PARCSigningAlgorithm_DSA;
case PARCCryptoSuite_RSA_SHA256: // fallthrough
case PARCCryptoSuite_RSA_SHA512:
return PARCSigningAlgorithm_RSA;
case PARCCryptoSuite_HMAC_SHA256: // fallthrough
case PARCCryptoSuite_HMAC_SHA512:
return PARCSigningAlgorithm_HMAC;
case PARCCryptoSuite_ECDSA_SHA256:
return PARCSigningAlgorithm_ECDSA;
case PARCCryptoSuite_NULL_CRC32C:
return PARCSigningAlgorithm_NULL;
default:
parcTrapIllegalValue(suit, "Unknown crypto suite: %d", suite);
return PARCSigningAlgorithm_UNKNOWN;
}
}
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