Security-57031.1.35.tar.gz

[apple/security.git] / libsecurity_apple_csp / lib / castContext.h

diff --git a/libsecurity_apple_csp/lib/castContext.h b/libsecurity_apple_csp/lib/castContext.h
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--- a/libsecurity_apple_csp/lib/castContext.h
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-/*
- * Copyright (c) 2000-2001 Apple Computer, Inc. All Rights Reserved.
- * 
- * The contents of this file constitute Original Code as defined in and are
- * subject to the Apple Public Source License Version 1.2 (the 'License').
- * You may not use this file except in compliance with the License. Please obtain
- * a copy of the License at http://www.apple.com/publicsource and read it before
- * using this file.
- * 
- * This 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.
- */
-
-
-/*
- * castContext.h - glue between BlockCrytpor and ssleay CAST-128 (CAST5)
- *                              implementation
- *
- * Written by Doug Mitchell 4/24/2003
- *
- * Here's what RFC 2144 has to say about CAST128 and CAST5 nomenclature:
- *
- *    In order to avoid confusion when variable keysize operation is 
- *    used, the name CAST-128 is to be considered synonymous with the 
- *    name CAST5; this allows a keysize to be appended without ambiguity.  
- *    Thus, for example, CAST-128 with a 40-bit key is to be referred to 
- *    as CAST5-40; where a 128-bit key is explicitly intended, the 
- *    name CAST5-128 should be used. 
- *
- * This module implements a variable key length, from 40 bits to 128 bits,
- * and can thus be said to implement both CAST-128 and CAST5.
- */
- 
-#ifndef _CAST_CONTEXT_H_
-#define _CAST_CONTEXT_H_
-
-#include "AppleCSPContext.h"
-#include "BlockCryptor.h"
-#include <CommonCrypto/CommonCryptor.h>
-#include <CommonCrypto/CommonCryptorSPI.h>
-
-class CastContext : public BlockCryptor {
-public:
-       CastContext(AppleCSPSession &session);
-       virtual ~CastContext();
-       
-       // called by CSPFullPluginSession
-       void init(const Context &context, bool encoding = true);
-
-       // As an optimization, we allow reuse of a modified context. 
-       // The main thing we avoid is a redundant key scheduling. We 
-       // save the current raw keys bits in mRawKey and compare on 
-       // re-init.
-       bool changed(const Context &context)     { return true; }
-
-       // called by BlockCryptor
-       void encryptBlock(
-               const void              *plainText,             // length implied (one block)
-               size_t                  plainTextLen,
-               void                    *cipherText,    
-               size_t                  &cipherTextLen, // in/out, throws on overflow
-               bool                    final);
-       void decryptBlock(
-               const void              *cipherText,    // length implied (one cipher block)
-               size_t                  cipherTextLen,
-               void                    *plainText,     
-               size_t                  &plainTextLen,  // in/out, throws on overflow
-               bool                    final);
-       
-private:
-       void deleteKey();
-
-       /* scheduled key */
-    CCCryptorRef       mCastKey;               
-
-       bool                            mInitFlag;                      // for easy reuse
-
-       /* 
-        * Raw key bits saved here and checked on re-init to avoid 
-        * extra key schedule 
-        */
-       uint8                           mRawKey[kCCKeySizeMaxCAST];
-       uint32                          mRawKeySize;
-
-       
-};     /* CastContext */
-
-#endif //_CAST_CONTEXT_H_