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git.saurik.com Git - apple/security.git/blob - Security/libsecurity_apple_csp/lib/NullCryptor.h
2 * Copyright (c) 2000-2001,2011,2014 Apple Inc. All Rights Reserved.
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
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.
20 * NullCryptor.h - null symmetric encryptor for measurement only
22 #ifndef _NULL_CRYPTOR_H_
23 #define _NULL_CRYPTOR_H_
26 * DO NOT DEFINE THIS SYMBOL TRUE FOR CODE CHECKED IN TO CVS
28 #define NULL_CRYPT_ENABLE 0
32 #include <security_cdsa_plugin/CSPsession.h>
34 #include "AppleCSPContext.h"
35 #include "AppleCSPSession.h"
36 #include "BlockCryptor.h"
38 #define NULL_CRYPT_BLOCK_SIZE 16
40 class NullCryptor
: public BlockCryptor
{
42 NullCryptor(AppleCSPSession
&session
) :
43 BlockCryptor(session
),
47 // called by CSPFullPluginSession
48 void init(const Context
&context
, bool encoding
= true)
50 if(mInitFlag
&& !opStarted()) {
53 /* Just have BlockCryptor do its setup */
54 setup(NULL_CRYPT_BLOCK_SIZE
, context
);
58 // called by BlockCryptor
60 const void *plainText
, // length implied (one block)
63 size_t &cipherTextLen
, // in/out, throws on overflow
66 memmove(cipherText
, plainText
, NULL_CRYPT_BLOCK_SIZE
);
67 cipherTextLen
= NULL_CRYPT_BLOCK_SIZE
;
71 const void *cipherText
, // length implied (one cipher block)
74 size_t &plainTextLen
, // in/out, throws on overflow
77 memmove(plainText
, cipherText
, NULL_CRYPT_BLOCK_SIZE
);
78 plainTextLen
= NULL_CRYPT_BLOCK_SIZE
;
82 bool mInitFlag
; // for easy reuse
86 #endif /* NULL_CRYPT_ENABLE */
88 #endif //_NULL_CRYPTOR_H_