| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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 "MessageDigest.h" |
| |
| #include <decaf/security/MessageDigestSpi.h> |
| #include <decaf/security/Provider.h> |
| #include <decaf/security/NoSuchAlgorithmException.h> |
| #include <decaf/lang/exceptions/CloneNotSupportedException.h> |
| #include <decaf/internal/security/Engine.h> |
| #include <decaf/lang/Pointer.h> |
| |
| using namespace decaf; |
| using namespace decaf::lang; |
| using namespace decaf::lang::exceptions; |
| using namespace decaf::security; |
| using namespace decaf::internal::security; |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| namespace decaf { |
| namespace security { |
| |
| class MessageDigestImpl { |
| public: |
| }; |
| }} |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| MessageDigest::MessageDigest(const std::string& name) : impl(NULL), spi(), provider(), algorithm(name) { |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| MessageDigest::~MessageDigest() { |
| try { |
| delete this->spi; |
| delete this->impl; |
| } |
| DECAF_CATCHALL_NOTHROW() |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| MessageDigest* MessageDigest::getInstance(const std::string& algorithm) { |
| |
| if (algorithm.empty()) { |
| throw NoSuchAlgorithmException(__FILE__, __LINE__, "Supplied algorithm string is empty."); |
| } |
| |
| static Engine engine("MessageDigest"); |
| |
| SecuritySpi* newSpi = engine.newInstance(algorithm); |
| |
| MessageDigestSpi* spi = dynamic_cast<MessageDigestSpi*>(newSpi); |
| if (spi == NULL) { |
| delete newSpi; |
| throw NoSuchAlgorithmException(__FILE__, __LINE__, |
| "Supplied algorithm not a MessageDigest algorithm."); |
| } |
| |
| MessageDigest* digest = new MessageDigest(algorithm); |
| digest->provider = engine.getProvider(); |
| digest->spi = spi; |
| |
| return digest; |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| bool MessageDigest::isEqual(const std::vector<unsigned char>& digesta, |
| const std::vector<unsigned char>& digestb) { |
| if (digesta.size() != digestb.size()) { |
| return false; |
| } |
| |
| // No early return is allowed to avoid timing attack. |
| // We must not return false until all elements are compared |
| // to keep the computing time constant |
| bool result = true; |
| for (int i = 0; i < (int)digesta.size(); i++) { |
| if (digesta[i] != digestb[i]) { |
| result = false; |
| } |
| } |
| return result; |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| std::vector<unsigned char> MessageDigest::digest() { |
| return this->spi->engineDigest(); |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| int MessageDigest::digest(unsigned char* input, int size, int offset, int length) { |
| return this->spi->engineDigest(input, size, offset, length); |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| std::vector<unsigned char> MessageDigest::digest(const unsigned char* input, int size) { |
| this->spi->engineUpdate(input, size, 0, size); |
| return this->spi->engineDigest(); |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| std::vector<unsigned char> MessageDigest::digest(const std::vector<unsigned char>& input) { |
| this->spi->engineUpdate(input); |
| return this->spi->engineDigest(); |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| void MessageDigest::update(unsigned char input) { |
| this->spi->engineUpdate(input); |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| void MessageDigest::update(unsigned char* input, int size, int offset, int length) { |
| this->spi->engineUpdate(input, size, offset, length); |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| void MessageDigest::update(const std::vector<unsigned char>& input) { |
| this->spi->engineUpdate(input); |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| void MessageDigest::update(nio::ByteBuffer& input) { |
| this->spi->engineUpdate(input); |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| int MessageDigest::getDigestLength() const { |
| |
| if (!this->spi->isCloneable()) { |
| return 0; |
| } |
| |
| return this->spi->engineGetDigestLength(); |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| MessageDigest* MessageDigest::clone() { |
| |
| if (!this->spi->isCloneable()) { |
| throw CloneNotSupportedException(__FILE__, __LINE__, |
| "MessageDigestSpi in use not cloneable."); |
| } |
| |
| MessageDigest* clone = new MessageDigest(this->algorithm); |
| clone->provider = this->provider; |
| clone->spi = this->spi->clone(); |
| |
| return clone; |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| void MessageDigest::reset() { |
| this->spi->engineReset(); |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| std::string MessageDigest::toString() const { |
| return std::string("MESSAGE DIGEST ") + algorithm; |
| } |