SecureTransport/sslNullCipher.cpp

   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 #include "sslContext.h"
  20
  21 #include <string.h>
  22
  23 static OSStatus NullInit(
  24         uint8 *key,
  25         uint8* iv,
  26         CipherContext *cipherCtx,
  27         SSLContext *ctx);
  28 static OSStatus NullCrypt(
  29         SSLBuffer src,
  30         SSLBuffer dest,
  31         CipherContext *cipherCtx,
  32         SSLContext *ctx);
  33 static OSStatus NullFinish(
  34         CipherContext *cipherCtx,
  35         SSLContext *ctx);
  36
  37 extern "C" {
  38 extern const SSLSymmetricCipher SSLCipherNull;
  39 }
  40 const SSLSymmetricCipher SSLCipherNull = {
  41     0,          /* Key size in bytes (ignoring parity) */
  42     0,          /* Secret key size */
  43     0,          /* IV size */
  44     0,          /* Block size */
  45     CSSM_ALGID_NONE,
  46     CSSM_ALGID_NONE,
  47     CSSM_ALGMODE_NONE,
  48         CSSM_PADDING_NONE,
  49     NullInit,
  50     NullCrypt,
  51     NullCrypt,
  52     NullFinish
  53 };
  54
  55 static OSStatus NullInit(
  56         uint8 *key,
  57         uint8* iv,
  58         CipherContext *cipherCtx,
  59         SSLContext *ctx)
  60 {
  61         return noErr;
  62 }
  63
  64 static OSStatus NullCrypt(
  65         SSLBuffer src,
  66         SSLBuffer dest,
  67         CipherContext *cipherCtx,
  68         SSLContext *ctx)
  69 {
  70         if (src.data != dest.data)
  71         memcpy(dest.data, src.data, src.length);
  72     return noErr;
  73 }
  74
  75 static OSStatus NullFinish(
  76         CipherContext *cipherCtx,
  77         SSLContext *ctx)
  78 {
  79         return noErr;
  80 }