+++ /dev/null
-/*
- * 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.
- */
-
-
-//
-// aescspi.h - AES context class
-//
-#ifndef _H_AESCSPI
-#define _H_AESCSPI
-
-#include <security_cdsa_plugin/CSPsession.h>
-#include "AppleCSP.h"
-#include "AppleCSPContext.h"
-#include "AppleCSPSession.h"
-#include "BlockCryptor.h"
-#include "rijndaelApi.h"
-
-/* Symmetric encryption context */
-class AESContext : public BlockCryptor {
-public:
- AESContext(AppleCSPSession &session) :
- BlockCryptor(session),
- mAesKey(NULL),
- mBlockSize(0),
- mInitFlag(false),
- mRawKeySize(0) { }
- ~AESContext();
-
- // 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 aesError(
- int artn,
- const char *errStr);
- void deleteKey();
-
- keyInstance *mAesKey; // keyInstance or keyInstance128
- unsigned mBlockSize; // in BYTES
- bool mInitFlag; // for easy reuse
- aesCryptFcn mEncryptFcn;
- aesCryptFcn mDecryptFcn;
-
- /* raw key bits saved here and checked on re-init to avoid extra key schedule */
- uint8 mRawKey[MAX_AES_KEY_BITS / 8];
- uint32 mRawKeySize;
-}; /* AESContext */
-
-// symmetric key generation context
-class AESKeyGenContext : public AppleCSPContext, private AppleSymmKeyGenContext {
-public:
- AESKeyGenContext(
- AppleCSPSession &session) :
- AppleCSPContext(session),
- AppleSymmKeyGenContext(
- MIN_AES_KEY_BITS,
- MAX_AES_KEY_BITS,
- true) { }
-
- void init(const Context &context, bool encoding = true) { }
-
- void generate(
- const Context &context,
- CssmKey &symKey,
- CssmKey &dummyKey);
-
-};
-
-#endif //_H_AESCSPI