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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 <parc/algol/parc_Memory.h>
#include <parc/algol/parc_Object.h>
#include <parc/security/parc_Signer.h>
#include <parc/security/parc_KeyStore.h>
struct parc_signer {
PARCObject *instance;
PARCSigningInterface *interface;
};
static bool
_parcSigner_FinalRelease(PARCSigner **signerPtr)
{
PARCSigner *signer = *signerPtr;
if (signer->instance != NULL) {
parcObject_Release(&(signer->instance));
}
return true;
}
void
parcSigner_AssertValid(const PARCSigner *signer)
{
assertNotNull(signer, "Parameter must be non-null PARCSigner");
}
parcObject_ImplementAcquire(parcSigner, PARCSigner);
parcObject_ImplementRelease(parcSigner, PARCSigner);
parcObject_Override(PARCSigner, PARCObject,
.destructor = (PARCObjectDestructor *) _parcSigner_FinalRelease);
PARCSigner *
parcSigner_Create(PARCObject *instance, PARCSigningInterface *interfaceContext)
{
assertNotNull(interfaceContext, "Parameter must be non-null implementation pointer");
PARCSigner *signer = parcObject_CreateInstance(PARCSigner);
if (signer != NULL) {
signer->instance = parcObject_Acquire(instance);
signer->interface = interfaceContext;
}
return signer;
}
PARCKey *
parcSigner_CreatePublicKey(PARCSigner *signer)
{
PARCKeyStore *keyStore = parcSigner_GetKeyStore(signer);
PARCCryptoHash *hash = parcKeyStore_GetVerifierKeyDigest(keyStore);
PARCKeyId *keyid = parcKeyId_Create(parcCryptoHash_GetDigest(hash));
parcCryptoHash_Release(&hash);
PARCBuffer *derEncodedKey = parcKeyStore_GetDEREncodedPublicKey(keyStore);
PARCKey *key = parcKey_CreateFromDerEncodedPublicKey(keyid,
parcSigner_GetSigningAlgorithm(signer),
derEncodedKey);
parcBuffer_Release(&derEncodedKey);
parcKeyId_Release(&keyid);
return key;
}
PARCKeyId *
parcSigner_CreateKeyId(const PARCSigner *signer)
{
PARCCryptoHash *hash = parcKeyStore_GetVerifierKeyDigest(parcSigner_GetKeyStore(signer));
PARCBuffer *keyidBytes = parcCryptoHash_GetDigest(hash);
PARCKeyId *result = parcKeyId_Create(keyidBytes);
parcCryptoHash_Release(&hash);
return result;
}
PARCCryptoHasher *
parcSigner_GetCryptoHasher(const PARCSigner *signer)
{
parcSigner_OptionalAssertValid(signer);
return signer->interface->GetCryptoHasher(signer->instance);
}
PARCSignature *
parcSigner_SignDigest(const PARCSigner *signer, const PARCCryptoHash *parcDigest)
{
parcSigner_OptionalAssertValid(signer);
assertNotNull(parcDigest, "parcDigest to sign must not be null");
return signer->interface->SignDigest(signer->instance, parcDigest);
}
PARCSignature *
parcSigner_SignBuffer(const PARCSigner *signer, const PARCBuffer *buffer)
{
parcSigner_OptionalAssertValid(signer);
assertNotNull(buffer, "buffer to sign must not be null");
PARCCryptoHashType hashType = parcSigner_GetCryptoHashType(signer);
PARCCryptoHasher *hasher = parcCryptoHasher_Create(hashType);
parcCryptoHasher_Init(hasher);
parcCryptoHasher_UpdateBuffer(hasher, buffer);
PARCCryptoHash *hash = parcCryptoHasher_Finalize(hasher);
parcCryptoHasher_Release(&hasher);
PARCSignature *signature = parcSigner_SignDigest(signer, hash);
parcCryptoHash_Release(&hash);
return signature;
}
PARCSigningAlgorithm
parcSigner_GetSigningAlgorithm(PARCSigner *signer)
{
parcSigner_OptionalAssertValid(signer);
return signer->interface->GetSigningAlgorithm(signer->instance);
}
PARCCryptoHashType
parcSigner_GetCryptoHashType(const PARCSigner *signer)
{
parcSigner_OptionalAssertValid(signer);
return signer->interface->GetCryptoHashType(signer->instance);
}
PARCKeyStore *
parcSigner_GetKeyStore(const PARCSigner *signer)
{
parcSigner_OptionalAssertValid(signer);
return signer->interface->GetKeyStore(signer->instance);
}
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