1 /* 2 * FILE: sha2.h 3 * AUTHOR: Aaron D. Gifford - http://www.aarongifford.com/ 4 * 5 * Copyright (c) 2000-2001, Aaron D. Gifford 6 * All rights reserved. 7 * 8 * Modified by Jelte Jansen to fit in ldns, and not clash with any 9 * system-defined SHA code. 10 * Changes: 11 * - Renamed (external) functions and constants to fit ldns style 12 * - Removed uintXX vs. u_intXX smartness, since ldns needs uintXX 13 * anyway 14 * - BYTE ORDER check replaced by simple ifdef as defined or not by 15 * configure.ac 16 * - Removed _End and _Data functions 17 * - Added ldns_shaX(data, len, digest) functions 18 * 19 * Redistribution and use in source and binary forms, with or without 20 * modification, are permitted provided that the following conditions 21 * are met: 22 * 1. Redistributions of source code must retain the above copyright 23 * notice, this list of conditions and the following disclaimer. 24 * 2. Redistributions in binary form must reproduce the above copyright 25 * notice, this list of conditions and the following disclaimer in the 26 * documentation and/or other materials provided with the distribution. 27 * 3. Neither the name of the copyright holder nor the names of contributors 28 * may be used to endorse or promote products derived from this software 29 * without specific prior written permission. 30 * 31 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTOR(S) ``AS IS'' AND 32 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 33 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 34 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTOR(S) BE LIABLE 35 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 36 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 37 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 38 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 39 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 40 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 41 * SUCH DAMAGE. 42 * 43 * $Id: sha2.h,v 1.1 2001/11/08 00:02:01 adg Exp adg $ 44 */ 45 46 #ifndef __LDNS_SHA2_H__ 47 #define __LDNS_SHA2_H__ 48 49 #include <stdint.h> /* uint32_t and friends */ 50 #include <stddef.h> /* size_t and NULL */ 51 52 #if LDNS_BUILD_CONFIG_HAVE_INTTYPES_H 53 # include <inttypes.h> 54 #endif 55 56 #ifdef __cplusplus 57 extern "C" { 58 #endif 59 60 61 /*** SHA-256/384/512 Various Length Definitions ***********************/ 62 #define LDNS_SHA256_BLOCK_LENGTH 64 63 #define LDNS_SHA256_DIGEST_LENGTH 32 64 #define LDNS_SHA256_DIGEST_STRING_LENGTH (LDNS_SHA256_DIGEST_LENGTH * 2 + 1) 65 #define LDNS_SHA384_BLOCK_LENGTH 128 66 #define LDNS_SHA384_DIGEST_LENGTH 48 67 #define LDNS_SHA384_DIGEST_STRING_LENGTH (LDNS_SHA384_DIGEST_LENGTH * 2 + 1) 68 #define LDNS_SHA512_BLOCK_LENGTH 128 69 #define LDNS_SHA512_DIGEST_LENGTH 64 70 #define LDNS_SHA512_DIGEST_STRING_LENGTH (LDNS_SHA512_DIGEST_LENGTH * 2 + 1) 71 72 73 /*** SHA-256/384/512 Context Structures *******************************/ 74 75 typedef struct _ldns_sha256_CTX { 76 uint32_t state[8]; 77 uint64_t bitcount; 78 uint8_t buffer[LDNS_SHA256_BLOCK_LENGTH]; 79 } ldns_sha256_CTX; 80 typedef struct _ldns_sha512_CTX { 81 uint64_t state[8]; 82 uint64_t bitcount[2]; 83 uint8_t buffer[LDNS_SHA512_BLOCK_LENGTH]; 84 } ldns_sha512_CTX; 85 86 typedef ldns_sha512_CTX ldns_sha384_CTX; 87 88 89 /*** SHA-256/384/512 Function Prototypes ******************************/ 90 void ldns_sha256_init(ldns_sha256_CTX *); 91 void ldns_sha256_update(ldns_sha256_CTX*, const uint8_t*, size_t); 92 void ldns_sha256_final(uint8_t[LDNS_SHA256_DIGEST_LENGTH], ldns_sha256_CTX*); 93 94 void ldns_sha384_init(ldns_sha384_CTX*); 95 void ldns_sha384_update(ldns_sha384_CTX*, const uint8_t*, size_t); 96 void ldns_sha384_final(uint8_t[LDNS_SHA384_DIGEST_LENGTH], ldns_sha384_CTX*); 97 98 void ldns_sha512_init(ldns_sha512_CTX*); 99 void ldns_sha512_update(ldns_sha512_CTX*, const uint8_t*, size_t); 100 void ldns_sha512_final(uint8_t[LDNS_SHA512_DIGEST_LENGTH], ldns_sha512_CTX*); 101 102 /** 103 * Convenience function to digest a fixed block of data at once. 104 * 105 * \param[in] data the data to digest 106 * \param[in] data_len the length of data in bytes 107 * \param[out] digest the length of data in bytes 108 * This pointer MUST have LDNS_SHA256_DIGEST_LENGTH bytes 109 * available 110 * \return the SHA1 digest of the given data 111 */ 112 unsigned char *ldns_sha256(const unsigned char *data, unsigned int data_len, unsigned char *digest); 113 114 /** 115 * Convenience function to digest a fixed block of data at once. 116 * 117 * \param[in] data the data to digest 118 * \param[in] data_len the length of data in bytes 119 * \param[out] digest the length of data in bytes 120 * This pointer MUST have LDNS_SHA384_DIGEST_LENGTH bytes 121 * available 122 * \return the SHA1 digest of the given data 123 */ 124 unsigned char *ldns_sha384(const unsigned char *data, unsigned int data_len, unsigned char *digest); 125 126 /** 127 * Convenience function to digest a fixed block of data at once. 128 * 129 * \param[in] data the data to digest 130 * \param[in] data_len the length of data in bytes 131 * \param[out] digest the length of data in bytes 132 * This pointer MUST have LDNS_SHA512_DIGEST_LENGTH bytes 133 * available 134 * \return the SHA1 digest of the given data 135 */ 136 unsigned char *ldns_sha512(const unsigned char *data, unsigned int data_len, unsigned char *digest); 137 138 #ifdef __cplusplus 139 } 140 #endif /* __cplusplus */ 141 142 #endif /* __LDNS_SHA2_H__ */ 143