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/*
* Copyright (c) 2013-2018 Isode Limited.
* All rights reserved.
* 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() override {
}
virtual Hash& update(const ByteArray& data) override {
return updateInternal(data);
}
virtual Hash& update(const SafeByteArray& data) override {
return updateInternal(data);
}
virtual std::vector<unsigned char> getHash() override {
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() override {
}
virtual Hash& update(const ByteArray& data) override {
return updateInternal(data);
}
virtual Hash& update(const SafeByteArray& data) override {
return updateInternal(data);
}
virtual std::vector<unsigned char> getHash() override {
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>
ByteArray getHMACSHA1Internal(const T& key, const ByteArray& data) {
unsigned int len = SHA_DIGEST_LENGTH;
std::vector<unsigned char> result(len);
try {
HMAC(EVP_sha1(), vecptr(key), boost::numeric_cast<int>(key.size()), vecptr(data), boost::numeric_cast<int>(data.size()), vecptr(result), &len);
}
catch (const boost::numeric::bad_numeric_cast&) {
assert(false);
}
return result;
}
}
OpenSSLCryptoProvider::OpenSSLCryptoProvider() {
}
OpenSSLCryptoProvider::~OpenSSLCryptoProvider() {
}
Hash* OpenSSLCryptoProvider::createSHA1() {
return new SHA1Hash();
}
Hash* OpenSSLCryptoProvider::createMD5() {
return new MD5Hash();
}
ByteArray OpenSSLCryptoProvider::getHMACSHA1(const SafeByteArray& key, const ByteArray& data) {
return getHMACSHA1Internal(key, data);
}
ByteArray OpenSSLCryptoProvider::getHMACSHA1(const ByteArray& key, const ByteArray& data) {
return getHMACSHA1Internal(key, data);
}
bool OpenSSLCryptoProvider::isMD5AllowedForCrypto() const {
return true;
}
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Swift