1/* 2 * Copyright (c) 2000-2001,2005-2008,2010-2012 Apple Inc. All Rights Reserved. 3 * 4 * @APPLE_LICENSE_HEADER_START@ 5 * 6 * This file contains Original Code and/or Modifications of Original Code 7 * as defined in and that are subject to the Apple Public Source License 8 * Version 2.0 (the 'License'). You may not use this file except in 9 * compliance with the License. Please obtain a copy of the License at 10 * http://www.opensource.apple.com/apsl/ and read it before using this 11 * file. 12 * 13 * The Original Code and all software distributed under the License are 14 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 15 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 16 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 18 * Please see the License for the specific language governing rights and 19 * limitations under the License. 20 * 21 * @APPLE_LICENSE_HEADER_END@ 22 */ 23 24/* THIS FILE CONTAINS KERNEL CODE */ 25 26#include "symCipher.h" 27 28#include <string.h> 29 30const SSLSymmetricCipherParams SSLCipherNullParams = { 31 .keyAlg = SSL_CipherAlgorithmNull, 32 .ivSize = 0, 33 .blockSize = 0, 34 .keySize = 0, 35 .cipherType = streamCipherType, 36}; 37 38static int NullInit( 39 const SSLSymmetricCipherParams *cipher, 40 int encrypting, 41 uint8_t *key, 42 uint8_t *iv, 43 SymCipherContext *cipherCtx) 44{ 45 return 0; 46} 47 48static int NullCrypt( 49 const uint8_t *src, 50 uint8_t *dest, 51 size_t len, 52 SymCipherContext cipherCt) 53{ 54 if (src != dest) 55 memcpy(dest, src, len); 56 return 0; 57} 58 59static int NullFinish( 60 SymCipherContext cipherCtx) 61{ 62 return 0; 63} 64 65const SSLSymmetricCipher SSLCipherNull = { 66 .params = &SSLCipherNullParams, 67 .c.cipher = { 68 .initialize = NullInit, 69 .encrypt = NullCrypt, 70 .decrypt = NullCrypt 71 }, 72 .finish = NullFinish 73}; 74