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/*
* Copyright (c) 2000 - 2015 Samsung Electronics Co., Ltd All Rights Reserved
*
* 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
*/
/*
* @file obj.cpp
* @author Bartłomiej Grzelewski (b.grzelewski@samsung.com)
* @version 1.0
*/
#include <memory>
#include <openssl/bio.h>
#include <openssl/evp.h>
#include <openssl/x509.h>
#include <dpl/log/log.h>
#include <generic-backend/exception.h>
#include <sw-backend/obj.h>
#include <sw-backend/internals.h>
#define EVP_SUCCESS 1 // DO NOTCHANGE THIS VALUE
#define EVP_FAIL 0 // DO NOTCHANGE THIS VALUE
namespace CKM {
namespace Crypto {
namespace SW {
namespace {
AlgoType key2algo(DataType type)
{
switch (static_cast<int>(type)) {
case DataType::Type::KEY_RSA_PRIVATE:
case DataType::Type::KEY_RSA_PUBLIC:
return AlgoType::RSA_SV;
case DataType::Type::KEY_DSA_PRIVATE:
case DataType::Type::KEY_DSA_PUBLIC:
return AlgoType::DSA_SV;
case DataType::Type::KEY_ECDSA_PRIVATE:
case DataType::Type::KEY_ECDSA_PUBLIC:
return AlgoType::ECDSA_SV;
default:
ThrowErr(Exc::Crypto::InputParam, "Invalid key type: ", type);
}
}
} // namespace anonymous
typedef std::unique_ptr<BIO, std::function<void(BIO *)>> BioUniquePtr;
RawBuffer SKey::encrypt(const CryptoAlgorithm &alg, const RawBuffer &data)
{
return Internals::symmetricEncrypt(getBinary(), alg, data);
}
RawBuffer SKey::decrypt(const CryptoAlgorithm &alg, const RawBuffer &cipher)
{
return Internals::symmetricDecrypt(getBinary(), alg, cipher);
}
RawBuffer AKey::sign(
const CryptoAlgorithm &alg,
const RawBuffer &message)
{
CryptoAlgorithm algWithType(alg);
algWithType.setParam(ParamName::ALGO_TYPE, key2algo(m_type));
return Internals::sign(getEvpShPtr().get(), algWithType, message);
}
int AKey::verify(const CryptoAlgorithm &alg, const RawBuffer &message,
const RawBuffer &sign)
{
CryptoAlgorithm algWithType(alg);
EVP_PKEY *evp = getEvpShPtr().get();
AlgoType type;
// setup algorithm type basing on evp key type if it doesn't exist
if (!algWithType.getParam(ParamName::ALGO_TYPE, type)) {
int subType = EVP_PKEY_type(evp->type);
switch (subType) {
case EVP_PKEY_RSA:
type = AlgoType::RSA_SV;
break;
case EVP_PKEY_DSA:
type = AlgoType::DSA_SV;
break;
case EVP_PKEY_EC:
type = AlgoType::ECDSA_SV;
break;
default:
ThrowErr(Exc::Crypto::InputParam, "Invalid key type: ", subType);
}
algWithType.setParam(ParamName::ALGO_TYPE, type);
}
return Internals::verify(evp, algWithType, message, sign);
}
RawBuffer AKey::encrypt(const CryptoAlgorithm &alg, const RawBuffer &data)
{
return Internals::asymmetricEncrypt(getEvpShPtr(), alg, data);
}
RawBuffer AKey::decrypt(const CryptoAlgorithm &alg, const RawBuffer &data)
{
return Internals::asymmetricDecrypt(getEvpShPtr(), alg, data);
}
EvpShPtr AKey::getEvpShPtr()
{
if (m_evp)
return m_evp;
EVP_PKEY *pkey = NULL;
BioUniquePtr bio(BIO_new(BIO_s_mem()), BIO_free_all);
LogDebug("Start to parse key:");
if (!pkey) {
(void)BIO_reset(bio.get());
BIO_write(bio.get(), m_raw.data(), m_raw.size());
pkey = d2i_PrivateKey_bio(bio.get(), NULL);
LogDebug("Trying d2i_PrivateKey_bio Status: " << (void *)pkey);
}
if (!pkey) {
(void)BIO_reset(bio.get());
BIO_write(bio.get(), m_raw.data(), m_raw.size());
pkey = d2i_PUBKEY_bio(bio.get(), NULL);
LogDebug("Trying d2i_PUBKEY_bio Status: " << (void *)pkey);
}
if (!pkey)
ThrowErr(Exc::Crypto::InternalError, "Failed to parse key");
m_evp.reset(pkey, EVP_PKEY_free);
return m_evp;
}
EvpShPtr Cert::getEvpShPtr()
{
if (m_evp)
return m_evp;
int size = static_cast<int>(m_raw.size());
const unsigned char *ptr = reinterpret_cast<const unsigned char *>
(m_raw.data());
X509 *x509 = d2i_X509(NULL, &ptr, size);
if (!x509)
ThrowErr(Exc::Crypto::InternalError, "Failed to parse certificate.");
m_evp.reset(X509_get_pubkey(x509), EVP_PKEY_free);
X509_free(x509);
return m_evp;
}
} // namespace SW
} // namespace Crypto
} // namespace CKM
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