projects / apple / security.git / blame
| Commit | Line | Data |
|---|---|---|
| b1ab9ed8 A |
1 | /* |
| 2 | * Copyright (c) 2000-2001 Apple Computer, 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 | * BlockCryptor.cpp - common context for block-oriented encryption algorithms | |
| 21 | * | |
| 22 | * Created March 5 2001 by dmitch | |
| 23 | */ | |
| 24 | ||
| 25 | #include "BlockCryptor.h" | |
| 26 | #include "BinaryKey.h" | |
| 27 | #include "AppleCSPSession.h" | |
| 28 | #include <security_utilities/alloc.h> | |
| 29 | #include <Security/cssmerr.h> | |
| 30 | #include <string.h> | |
| 31 | #include <security_utilities/debugging.h> | |
| 32 | #include <security_cdsa_utilities/cssmdata.h> | |
| 33 | ||
| 34 | #define BlockCryptDebug(args...) secdebug("blockCrypt", ## args) | |
| 35 | #define bprintf(args...) secdebug("blockCryptBuf", ## args) | |
| 36 | #define ioprintf(args...) secdebug("blockCryptIo", ## args) | |
| 37 | ||
| 38 | BlockCryptor::~BlockCryptor() | |
| 39 | { | |
| 40 | if(mInBuf) { | |
| 41 | memset(mInBuf, 0, mInBlockSize); | |
| 42 | session().free(mInBuf); | |
| 43 | mInBuf = NULL; | |
| 44 | } | |
| 45 | if(mChainBuf) { | |
| 46 | memset(mChainBuf, 0, mInBlockSize); | |
| 47 | session().free(mChainBuf); | |
| 48 | mChainBuf = NULL; | |
| 49 | } | |
| 50 | mInBufSize = 0; | |
| 51 | } | |
| 52 | ||
| 53 | /* | |
| 54 | * Reusable setup functions called from subclass's init. | |
| 55 | * This is the general purpose one.... | |
| 56 | */ | |
| 57 | void BlockCryptor::setup( | |
| 58 | size_t blockSizeIn, // block size of input | |
| 59 | size_t blockSizeOut, // block size of output | |
| 60 | bool pkcsPad, // this class performs PKCS{5,7} padding | |
| 61 | bool needsFinal, // needs final update with valid data | |
| 62 | BC_Mode mode, // ECB, CBC | |
| 63 | const CssmData *iv) // init vector, required for CBC | |
| 64 |