1 /* $NetBSD: hmac.h,v 1.2 2017/01/28 21:31:47 christos Exp $ */ 2 3 /* 4 * Copyright (c) 2005 Kungliga Tekniska Högskolan 5 * (Royal Institute of Technology, Stockholm, Sweden). 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * 3. Neither the name of the Institute nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 /* Id */ 37 38 #ifndef HEIM_HMAC_H 39 #define HEIM_HMAC_H 1 40 41 #include <hcrypto/evp.h> 42 43 /* symbol renaming */ 44 #define HMAC_CTX_init hc_HMAC_CTX_init 45 #define HMAC_CTX_cleanup hc_HMAC_CTX_cleanup 46 #define HMAC_size hc_HMAC_size 47 #define HMAC_Init_ex hc_HMAC_Init_ex 48 #define HMAC_Update hc_HMAC_Update 49 #define HMAC_Final hc_HMAC_Final 50 #define HMAC hc_HMAC 51 52 /* 53 * 54 */ 55 56 #define HMAC_MAX_MD_CBLOCK 64 57 58 typedef struct hc_HMAC_CTX HMAC_CTX; 59 60 struct hc_HMAC_CTX { 61 const EVP_MD *md; 62 ENGINE *engine; 63 EVP_MD_CTX *ctx; 64 size_t key_length; 65 void *opad; 66 void *ipad; 67 void *buf; 68 }; 69 70 71 void HMAC_CTX_init(HMAC_CTX *); 72 void HMAC_CTX_cleanup(HMAC_CTX *ctx); 73 74 size_t HMAC_size(const HMAC_CTX *ctx); 75 76 void HMAC_Init_ex(HMAC_CTX *, const void *, size_t, 77 const EVP_MD *, ENGINE *); 78 void HMAC_Update(HMAC_CTX *ctx, const void *data, size_t len); 79 void HMAC_Final(HMAC_CTX *ctx, void *md, unsigned int *len); 80 81 void * HMAC(const EVP_MD *evp_md, const void *key, size_t key_len, 82 const void *data, size_t n, void *md, unsigned int *md_len); 83 84 #endif /* HEIM_HMAC_H */ 85