1/* 2 * Copyright (c) 2000-2001,2011,2014 Apple Inc. All Rights Reserved. 3 * 4 * The contents of this file constitute Original Code as defined in and are 5 * subject to the Apple Public Source License Version 1.2 (the 'License'). 6 * You may not use this file except in compliance with the License. Please obtain 7 * a copy of the License at http://www.apple.com/publicsource and read it before 8 * using this file. 9 * 10 * This Original Code and all software distributed under the License are 11 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS 12 * OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, INCLUDING WITHOUT 13 * LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR 14 * PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. Please see the License for the 15 * specific language governing rights and limitations under the License. 16 */ 17 18 19/* 20 * RSA_asymmetric.h - CSPContext for RSA asymmetric encryption 21 */ 22 23#ifndef _RSA_ASYMMETRIC_H_ 24#define _RSA_ASYMMETRIC_H_ 25 26#include <security_cdsa_plugin/CSPsession.h> 27#include <AppleCSP.h> 28#include <AppleCSPContext.h> 29#include <AppleCSPSession.h> 30#include <BlockCryptor.h> 31#include <openssl/rsa.h> 32 33#define RSA_ASYM_PADDING_DEFAULT RSA_PKCS1_PADDING 34 35class RSA_CryptContext : public BlockCryptor { 36public: 37 RSA_CryptContext(AppleCSPSession &session) : 38 BlockCryptor(session), 39 mRsaKey(NULL), 40 mAllocdRsaKey(false), 41 mInitFlag(false), 42 mPadding(RSA_ASYM_PADDING_DEFAULT), 43 mOaep(false), 44 mLabel(Allocator::standard()) { } 45 46 ~RSA_CryptContext(); 47 48 /* called by CSPFullPluginSession */ 49 void init(const Context &context, bool encoding = true); 50 51 /* called by BlockCryptor */ 52 void encryptBlock( 53 const void *plainText, // length implied (one block) 54 size_t plainTextLen, 55 void *cipherText, 56 size_t &cipherTextLen, // in/out, throws on overflow 57 bool final); 58 void decryptBlock( 59 const void *cipherText, // length implied (one cipher block) 60 size_t cipherTextLen, 61 void *plainText, 62 size_t &plainTextLen, // in/out, throws on overflow 63 bool final); 64 65 size_t outputSize( 66 bool final, // ignored 67 size_t inSize = 0); // output for given input size 68 69private: 70 RSA *mRsaKey; 71 bool mAllocdRsaKey; 72 bool mInitFlag; // allows easy reuse 73 int mPadding; // RSA_NO_PADDING, RSA_PKCS1_PADDING, 74 // RSA_SSLV23_PADDING 75 76 /* 77 * optional fields for OEAP keys 78 * (mKeyHeader.AlgorithmId == CSSM_ALGMODE_PKCS1_EME_OAEP) 79 */ 80 bool mOaep; 81 CssmAutoData mLabel; 82 83}; /* RSA_CryptContext */ 84 85 86#endif // _RSA_ASYMMETRIC_H_ 87