/* * Copyright (c) 2006 Apple Computer, 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@ */ /* * CommonCryptorPriv.h - interface between CommonCryptor and operation- and * algorithm-specific service providers. */ #ifndef _CC_COMMON_CRYPTOR_PRIV_ #define _CC_COMMON_CRYPTOR_PRIV_ #include "CommonCryptor.h" #include "CommonCryptorSPI.h" #include "tomcrypt.h" #include "rc4.h" #include "pkcs7pad.h" #ifdef __cplusplus extern "C" { #endif static enum { ccStreaming = 0x00000001, ccStreamMode = 0x00000002, ccBlockMode = 0x00000004 }; typedef uint32_t CCBufStrat; #define CCMAXBUFFERSIZE 128 #define CCMAXCONTEXTSIZE 1032 static uint32_t ccMaxCipherBlockSize = CCMAXBUFFERSIZE; // rc2/rc5 max blocksize static uint32_t ccDefaultRounds = 0; typedef struct _CCCryptor { char buffptr[CCMAXBUFFERSIZE]; char iv[CCMAXBUFFERSIZE]; CCOperation op; // kCCEncrypt, kCCDecrypt, or kCCBoth CCAlgorithm cipher; // encryption algorithm CCMode mode; // one of pre-defined modes mode_descriptor_ptr modeptr; CCBufStrat bufStrat; CCPadding padding; // padding to use 0 (default) or kCCOptionPKCS7Padding int32_t ltcAlgIndex; // LibTomCrypt cipher index uint32_t blocksize; uint32_t bufferPos; uint32_t bytesProcessed; mode_context *ctx; // largest size context in use void* mallocAddress; // if Not NULL, we mallocd this and must free it in CCCryptorRelease() uint32_t modeContext[CCMAXCONTEXTSIZE/4]; } CCCryptor; static uint32_t cryptorSize = sizeof(struct _CCCryptor); typedef struct _CCCompat { uint32_t weMallocd; CCCryptor *cryptor; } CCCompatCryptor; #define CCCRYPTOR_SIZE sizeof(struct _CCCryptor) #define kCCContextSizeGENERIC (sizeof(CCCompatCryptor)) #ifdef __cplusplus } #endif #endif /* _CC_COMMON_CRYPTOR_PRIV_ */