1 /* 2 * null-cipher.h 3 * 4 * header file for the null cipher 5 * 6 * 7 * David A. McGrew 8 * Cisco Systems, Inc. 9 */ 10 11 /* 12 * 13 * Copyright (c) 2001-2006, Cisco Systems, Inc. 14 * All rights reserved. 15 * 16 * Redistribution and use in source and binary forms, with or without 17 * modification, are permitted provided that the following conditions 18 * are met: 19 * 20 * Redistributions of source code must retain the above copyright 21 * notice, this list of conditions and the following disclaimer. 22 * 23 * Redistributions in binary form must reproduce the above 24 * copyright notice, this list of conditions and the following 25 * disclaimer in the documentation and/or other materials provided 26 * with the distribution. 27 * 28 * Neither the name of the Cisco Systems, Inc. nor the names of its 29 * contributors may be used to endorse or promote products derived 30 * from this software without specific prior written permission. 31 * 32 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 33 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 34 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 35 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 36 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 37 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 38 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 39 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 40 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 41 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 42 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 43 * OF THE POSSIBILITY OF SUCH DAMAGE. 44 * 45 */ 46 47 48 #ifndef NULL_CIPHER_H 49 #define NULL_CIPHER_H 50 51 #include "datatypes.h" 52 #include "cipher.h" 53 54 typedef struct { 55 char foo ;/* empty, for now */ 56 } null_cipher_ctx_t; 57 58 59 /* 60 * none of these functions do anything (though future versions may keep 61 * track of bytes encrypted, number of instances, and/or other info). 62 */ 63 64 err_status_t 65 null_cipher_init(null_cipher_ctx_t *c, const uint8_t *key); 66 67 err_status_t 68 null_cipher_set_segment(null_cipher_ctx_t *c, 69 unsigned long index); 70 71 err_status_t 72 null_cipher_encrypt(null_cipher_ctx_t *c, 73 unsigned char *buf, unsigned int *bytes_to_encr); 74 75 76 err_status_t 77 null_cipher_encrypt_aligned(null_cipher_ctx_t *c, 78 unsigned char *buf, int bytes_to_encr); 79 80 #endif /* NULL_CIPHER_H */ 81