/* * Copyright (c) 2000-2004,2011,2014 Apple Inc. All Rights Reserved. * * @APPLE_LICENSE_HEADER_START@ * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in * compliance with the License. Please obtain a copy of the License at * http://www.opensource.apple.com/apsl/ and read it before using this * file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. * * @APPLE_LICENSE_HEADER_END@ */ // // devrandom - RNG operations based on /dev/random // #include <security_utilities/devrandom.h> #include <security_utilities/logging.h> #include <CommonCrypto/CommonRandomSPI.h> using namespace UnixPlusPlus; namespace Security { // // The common (shared) open file descriptor to /dev/random // ModuleNexus<DevRandomGenerator::Writable> DevRandomGenerator::mWriter; // // In the current implementation, opening the file descriptor is deferred. // DevRandomGenerator::DevRandomGenerator(bool writable) { } // // Standard generate (directly from /dev/random) // void DevRandomGenerator::random(void *data, size_t length) { if (CCRandomCopyBytes(kCCRandomDefault, data, length)) { Syslog::error("DevRandomGenerator: failed to generate random"); UnixError::throwMe(EIO); } } // // If you opened for writing, you add entropy to the global pool here // void DevRandomGenerator::addEntropy(const void *data, size_t length) { if (mWriter().write(data, length) != length) UnixError::throwMe(EIO); // short write (shouldn't happen) } } // end namespace Security