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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 <stdio.h>
#include <LongBow/runtime.h>
#include <ccnx/common/codec/schema_v1/ccnxCodecSchemaV1_TlvDictionary.h>
#include <parc/security/parc_Verifier.h>
#include <parc/security/parc_SymmetricKeyStore.h>
#include <parc/security/parc_SymmetricKeySigner.h>
/**
* Sets the Validation algorithm to HMAC with SHA-256 hash
*
* Sets the validation algorithm to be HMAC with a SHA-256 digest. Optionally includes
* a KeyId with the message.
*
* @param [in] message The message dictionary
* @param [in] keyid (Optional) The KEYID to include the the message
*
* @return <#value#> <#explanation#>
*
* Example:
* @code
* <#example#>
* @endcode
*/
bool
ccnxValidationHmacSha256_Set(CCNxTlvDictionary *message, const PARCBuffer *keyid)
{
bool success = true;
switch (ccnxTlvDictionary_GetSchemaVersion(message)) {
case CCNxTlvDictionary_SchemaVersion_V1: {
success &= ccnxTlvDictionary_PutInteger(message, CCNxCodecSchemaV1TlvDictionary_ValidationFastArray_CRYPTO_SUITE, PARCCryptoSuite_HMAC_SHA256);
if (keyid) {
success &= ccnxTlvDictionary_PutBuffer(message, CCNxCodecSchemaV1TlvDictionary_ValidationFastArray_KEYID, keyid);
}
break;
}
default:
trapIllegalValue(message, "Unknown schema version: %d", ccnxTlvDictionary_GetSchemaVersion(message));
}
return success;
}
bool
ccnxValidationHmacSha256_Test(const CCNxTlvDictionary *message)
{
switch (ccnxTlvDictionary_GetSchemaVersion(message)) {
case CCNxTlvDictionary_SchemaVersion_V1: {
if (ccnxTlvDictionary_IsValueInteger(message, CCNxCodecSchemaV1TlvDictionary_ValidationFastArray_CRYPTO_SUITE)) {
uint64_t cryptosuite = ccnxTlvDictionary_GetInteger(message, CCNxCodecSchemaV1TlvDictionary_ValidationFastArray_CRYPTO_SUITE);
return (cryptosuite == PARCCryptoSuite_HMAC_SHA256);
}
return false;
}
default:
trapIllegalValue(message, "Unknown schema version: %d", ccnxTlvDictionary_GetSchemaVersion(message));
}
return false;
}
PARCSigner *
ccnxValidationHmacSha256_CreateSigner(PARCBuffer *secretKey)
{
PARCSymmetricKeyStore *keyStore = parcSymmetricKeyStore_Create(secretKey);
PARCSymmetricKeySigner *symmetricSigner = parcSymmetricKeySigner_Create(keyStore, PARCCryptoHashType_SHA256);
parcSymmetricKeyStore_Release(&keyStore);
PARCSigner *signer = parcSigner_Create(symmetricSigner, PARCSymmetricKeySignerAsSigner);
parcSymmetricKeySigner_Release(&symmetricSigner);
return signer;
}
PARCVerifier *
ccnxValidationHmacSha256_CreateVerifier(PARCBuffer *secretKey)
{
trapNotImplemented("not finished yet");
}
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