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/*
* Copyright (c) 2013 Remko Tronçon
* Licensed under the GNU General Public License.
* See the COPYING file for more information.
*/
#include <Swiften/Crypto/OpenSSLCryptoProvider.h>
#include <openssl/sha.h>
#include <openssl/md5.h>
#include <openssl/hmac.h>
#include <cassert>
#include <boost/numeric/conversion/cast.hpp>
#include <Swiften/Crypto/Hash.h>
#include <Swiften/Base/ByteArray.h>
#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
using namespace Swift;
namespace {
class SHA1Hash : public Hash {
public:
SHA1Hash() : finalized(false) {
if (!SHA1_Init(&context)) {
assert(false);
}
}
~SHA1Hash() {
}
virtual Hash& update(const ByteArray& data) SWIFTEN_OVERRIDE {
return updateInternal(data);
}
virtual Hash& update(const SafeByteArray& data) SWIFTEN_OVERRIDE {
return updateInternal(data);
}
virtual std::vector<unsigned char> getHash() {
assert(!finalized);
std::vector<unsigned char> result(SHA_DIGEST_LENGTH);
SHA1_Final(vecptr(result), &context);
return result;
}
private:
template<typename ContainerType>
Hash& updateInternal(const ContainerType& data) {
assert(!finalized);
if (!SHA1_Update(&context, vecptr(data), data.size())) {
assert(false);
}
return *this;
}
private:
SHA_CTX context;
bool finalized;
};
class MD5Hash : public Hash {
public:
MD5Hash() : finalized(false) {
if (!MD5_Init(&context)) {
assert(false);
}
}
~MD5Hash() {
}
virtual Hash& update(const ByteArray& data) SWIFTEN_OVERRIDE {
return updateInternal(data);
}
virtual Hash& update(const SafeByteArray& data) SWIFTEN_OVERRIDE {
return updateInternal(data);
}
virtual std::vector<unsigned char> getHash() {
assert(!finalized);
std::vector<unsigned char> result(MD5_DIGEST_LENGTH);
MD5_Final(vecptr(result), &context);
return result;
}
private:
template<typename ContainerType>
Hash& updateInternal(const ContainerType& data) {
assert(!finalized);
if (!MD5_Update(&context, vecptr(data), data.size())) {
assert(false);
}
return *this;
}
private:
MD5_CTX context;
bool finalized;
};
template<typename T>
class HMACHash : public Hash {
public:
HMACHash(const T& key) : finalized(false) {
HMAC_CTX_init(&context);
HMAC_Init(&context, vecptr(key), boost::numeric_cast<int>(key.size()), EVP_sha1());
}
~HMACHash() {
HMAC_CTX_cleanup(&context);
}
virtual Hash& update(const ByteArray& data) SWIFTEN_OVERRIDE {
return updateInternal(data);
}
virtual Hash& update(const SafeByteArray& data) SWIFTEN_OVERRIDE {
return updateInternal(data);
}
virtual std::vector<unsigned char> getHash() {
assert(!finalized);
std::vector<unsigned char> result(SHA_DIGEST_LENGTH);
unsigned int len = SHA_DIGEST_LENGTH;
HMAC_Final(&context, vecptr(result), &len);
return result;
}
private:
template<typename ContainerType>
Hash& updateInternal(const ContainerType& data) {
assert(!finalized);
HMAC_Update(&context, vecptr(data), data.size());
return *this;
}
private:
HMAC_CTX context;
bool finalized;
};
}
OpenSSLCryptoProvider::OpenSSLCryptoProvider() {
}
OpenSSLCryptoProvider::~OpenSSLCryptoProvider() {
}
Hash* OpenSSLCryptoProvider::createSHA1() {
return new SHA1Hash();
}
Hash* OpenSSLCryptoProvider::createMD5() {
return new MD5Hash();
}
Hash* OpenSSLCryptoProvider::createHMACSHA1(const SafeByteArray& key) {
return new HMACHash<SafeByteArray>(key);
}
Hash* OpenSSLCryptoProvider::createHMACSHA1(const ByteArray& key) {
return new HMACHash<ByteArray>(key);
}
bool OpenSSLCryptoProvider::isMD5AllowedForCrypto() const {
return true;
}
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Swift