sslNullCipher.c   [plain text]

/*
 * Copyright (c) 2000-2001,2005-2008,2010-2012 Apple Inc. All Rights Reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 *
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this
 * file.
 *
 * The 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.
 *
 * @APPLE_LICENSE_HEADER_END@
 */

#include "sslContext.h"

#include <string.h>

static OSStatus NullInit(
	uint8_t *key,
	uint8_t *iv,
	CipherContext *cipherCtx,
	SSLContext *ctx);
static OSStatus NullCrypt(
	const uint8_t *src,
	uint8_t *dest,
    size_t len,
	CipherContext *cipherCtx,
	SSLContext *ctx);
static OSStatus NullFinish(
	CipherContext *cipherCtx,
	SSLContext *ctx);

extern const SSLSymmetricCipher SSLCipherNull;

const SSLSymmetricCipher SSLCipherNull = {
    0,          /* Key size in bytes (ignoring parity) */
    0,          /* Secret key size */
    0,          /* IV size */
    0,          /* Block size */
    -1,         /* CC cipher (unused by Null*) */
    NullInit,
    NullCrypt,
    NullCrypt,
    NullFinish
};

static OSStatus NullInit(
	uint8_t *key,
	uint8_t *iv,
	CipherContext *cipherCtx,
	SSLContext *ctx)
{
 	return noErr;
}

static OSStatus NullCrypt(
	const uint8_t *src,
	uint8_t *dest,
    size_t len,
	CipherContext *cipherCtx,
	SSLContext *ctx)
{
	if (src != dest)
        memcpy(dest, src, len);
    return noErr;
}

static OSStatus NullFinish(
	CipherContext *cipherCtx,
	SSLContext *ctx)
{
	return noErr;
}