| /* |
| * 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 "SecureRandom.h" |
| |
| #include <decaf/lang/exceptions/NullPointerException.h> |
| #include <decaf/lang/exceptions/IllegalArgumentException.h> |
| |
| #ifdef HAVE_PTHREAD_H |
| #include <decaf/internal/security/unix/SecureRandomImpl.h> |
| #else |
| #include <decaf/internal/security/windows/SecureRandomImpl.h> |
| #endif |
| |
| using namespace decaf; |
| using namespace decaf::lang; |
| using namespace decaf::lang::exceptions; |
| using namespace decaf::security; |
| using namespace decaf::internal; |
| using namespace decaf::internal::security; |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| SecureRandom::SecureRandom() : secureRandom(new SecureRandomImpl()) { |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| SecureRandom::SecureRandom( const std::vector<unsigned char>& seed ) : |
| secureRandom(new SecureRandomImpl()) { |
| |
| if( !seed.empty() ) { |
| this->secureRandom->providerSetSeed( &seed[0], (int)seed.size() ); |
| } |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| SecureRandom::SecureRandom(const unsigned char* seed, int size) : |
| secureRandom(new SecureRandomImpl()) { |
| |
| if (seed == NULL) { |
| throw NullPointerException( __FILE__, __LINE__, "Seed buffer pointer passed was NULL"); |
| } |
| |
| if (size < 0) { |
| throw IllegalArgumentException( __FILE__, __LINE__, "Passed buffer size was negative."); |
| } |
| |
| if (size > 0) { |
| this->secureRandom->providerSetSeed(seed, size); |
| } |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| SecureRandom::~SecureRandom() { |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| void SecureRandom::nextBytes(std::vector<unsigned char>& buf) { |
| if (!buf.empty()) { |
| this->secureRandom->providerNextBytes(&buf[0], (int) buf.size()); |
| } |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| void SecureRandom::nextBytes(unsigned char* buf, int size) { |
| |
| if (buf == NULL) { |
| throw NullPointerException( __FILE__, __LINE__, "Buffer pointer passed was NULL"); |
| } |
| |
| if (size < 0) { |
| throw IllegalArgumentException( __FILE__, __LINE__, "Passed buffer size was negative."); |
| } |
| |
| if (size > 0) { |
| this->secureRandom->providerNextBytes(buf, size); |
| } |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| void SecureRandom::setSeed(unsigned long long seed) { |
| |
| if (seed == 0) { |
| return; |
| } |
| |
| unsigned char byteSeed[] = { (unsigned char)( ( seed >> 56 ) & 0xFF ), |
| (unsigned char)( ( seed >> 48 ) & 0xFF ), |
| (unsigned char)( ( seed >> 40 ) & 0xFF ), |
| (unsigned char)( ( seed >> 32 ) & 0xFF ), |
| (unsigned char)( ( seed >> 24 ) & 0xFF ), |
| (unsigned char)( ( seed >> 16 ) & 0xFF ), |
| (unsigned char)( ( seed >> 8 ) & 0xFF ), |
| (unsigned char)( ( seed ) & 0xFF ) }; |
| |
| this->secureRandom->providerSetSeed( byteSeed, 8 ); |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| void SecureRandom::setSeed(const std::vector<unsigned char>& seed) { |
| if (!seed.empty()) { |
| this->secureRandom->providerSetSeed(&seed[0], (int) seed.size()); |
| } |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| void SecureRandom::setSeed(const unsigned char* seed, int size) { |
| |
| if (seed == NULL) { |
| throw NullPointerException( __FILE__, __LINE__, "Buffer pointer passed was NULL"); |
| } |
| |
| if (size < 0) { |
| throw IllegalArgumentException( __FILE__, __LINE__, "Passed buffer size was negative."); |
| } |
| |
| if (size > 0) { |
| this->secureRandom->providerSetSeed(seed, size); |
| } |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| int SecureRandom::next(int numBits) { |
| |
| if (numBits < 0) { |
| numBits = 0; |
| } else if (numBits > 32) { |
| numBits = 32; |
| } |
| |
| int bytes = (numBits + 7) / 8; |
| unsigned char* next = new unsigned char[bytes]; |
| unsigned int ret = 0; |
| |
| this->nextBytes(next, bytes); |
| for (int i = 0; i < bytes; i++) { |
| ret = (next[i] & 0xFF) | (ret << 8); |
| } |
| |
| ret = ret >> ((bytes * 8) - numBits); |
| |
| delete[] next; |
| |
| return ret; |
| } |