1238104Sdes/* 2238104Sdes * FILE: sha2.c 3238104Sdes * AUTHOR: Aaron D. Gifford - http://www.aarongifford.com/ 4238104Sdes * 5238104Sdes * Copyright (c) 2000-2001, Aaron D. Gifford 6238104Sdes * All rights reserved. 7238104Sdes * 8238104Sdes * Modified by Jelte Jansen to fit in ldns, and not clash with any 9238104Sdes * system-defined SHA code. 10238104Sdes * Changes: 11238104Sdes * - Renamed (external) functions and constants to fit ldns style 12238104Sdes * - Removed _End and _Data functions 13238104Sdes * - Added ldns_shaX(data, len, digest) convenience functions 14238104Sdes * - Removed prototypes of _Transform functions and made those static 15238104Sdes * 16238104Sdes * Redistribution and use in source and binary forms, with or without 17238104Sdes * modification, are permitted provided that the following conditions 18238104Sdes * are met: 19238104Sdes * 1. Redistributions of source code must retain the above copyright 20238104Sdes * notice, this list of conditions and the following disclaimer. 21238104Sdes * 2. Redistributions in binary form must reproduce the above copyright 22238104Sdes * notice, this list of conditions and the following disclaimer in the 23238104Sdes * documentation and/or other materials provided with the distribution. 24238104Sdes * 3. Neither the name of the copyright holder nor the names of contributors 25238104Sdes * may be used to endorse or promote products derived from this software 26238104Sdes * without specific prior written permission. 27238104Sdes * 28238104Sdes * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTOR(S) ``AS IS'' AND 29238104Sdes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 30238104Sdes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 31238104Sdes * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTOR(S) BE LIABLE 32238104Sdes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 33238104Sdes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 34238104Sdes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 35238104Sdes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 36238104Sdes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 37238104Sdes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 38238104Sdes * SUCH DAMAGE. 39238104Sdes * 40238104Sdes * $Id: sha2.c,v 1.1 2001/11/08 00:01:51 adg Exp adg $ 41238104Sdes */ 42238104Sdes 43238104Sdes#include <ldns/config.h> 44238104Sdes#include <string.h> /* memcpy()/memset() or bcopy()/bzero() */ 45238104Sdes#include <assert.h> /* assert() */ 46238104Sdes#include <ldns/sha2.h> 47238104Sdes 48238104Sdes/* 49238104Sdes * ASSERT NOTE: 50238104Sdes * Some sanity checking code is included using assert(). On my FreeBSD 51238104Sdes * system, this additional code can be removed by compiling with NDEBUG 52238104Sdes * defined. Check your own systems manpage on assert() to see how to 53238104Sdes * compile WITHOUT the sanity checking code on your system. 54238104Sdes * 55238104Sdes * UNROLLED TRANSFORM LOOP NOTE: 56238104Sdes * You can define SHA2_UNROLL_TRANSFORM to use the unrolled transform 57238104Sdes * loop version for the hash transform rounds (defined using macros 58238104Sdes * later in this file). Either define on the command line, for example: 59238104Sdes * 60238104Sdes * cc -DSHA2_UNROLL_TRANSFORM -o sha2 sha2.c sha2prog.c 61238104Sdes * 62238104Sdes * or define below: 63238104Sdes * 64238104Sdes * #define SHA2_UNROLL_TRANSFORM 65238104Sdes * 66238104Sdes */ 67238104Sdes 68238104Sdes 69238104Sdes/*** SHA-256/384/512 Machine Architecture Definitions *****************/ 70238104Sdes/* 71238104Sdes * BYTE_ORDER NOTE: 72238104Sdes * 73238104Sdes * Please make sure that your system defines BYTE_ORDER. If your 74238104Sdes * architecture is little-endian, make sure it also defines 75238104Sdes * LITTLE_ENDIAN and that the two (BYTE_ORDER and LITTLE_ENDIAN) are 76238104Sdes * equivilent. 77238104Sdes * 78238104Sdes * If your system does not define the above, then you can do so by 79238104Sdes * hand like this: 80238104Sdes * 81238104Sdes * #define LITTLE_ENDIAN 1234 82238104Sdes * #define BIG_ENDIAN 4321 83238104Sdes * 84238104Sdes * And for little-endian machines, add: 85238104Sdes * 86238104Sdes * #define BYTE_ORDER LITTLE_ENDIAN 87238104Sdes * 88238104Sdes * Or for big-endian machines: 89238104Sdes * 90238104Sdes * #define BYTE_ORDER BIG_ENDIAN 91238104Sdes * 92238104Sdes * The FreeBSD machine this was written on defines BYTE_ORDER 93238104Sdes * appropriately by including <sys/types.h> (which in turn includes 94238104Sdes * <machine/endian.h> where the appropriate definitions are actually 95238104Sdes * made). 96238104Sdes */ 97238104Sdes#if !defined(BYTE_ORDER) || (BYTE_ORDER != LITTLE_ENDIAN && BYTE_ORDER != BIG_ENDIAN) 98238104Sdes#error Define BYTE_ORDER to be equal to either LITTLE_ENDIAN or BIG_ENDIAN 99238104Sdes#endif 100238104Sdes 101238104Sdestypedef uint8_t sha2_byte; /* Exactly 1 byte */ 102238104Sdestypedef uint32_t sha2_word32; /* Exactly 4 bytes */ 103238104Sdes#ifdef S_SPLINT_S 104238104Sdestypedef unsigned long long sha2_word64; /* lint 8 bytes */ 105238104Sdes#else 106238104Sdestypedef uint64_t sha2_word64; /* Exactly 8 bytes */ 107238104Sdes#endif 108238104Sdes 109238104Sdes/*** SHA-256/384/512 Various Length Definitions ***********************/ 110238104Sdes/* NOTE: Most of these are in sha2.h */ 111238104Sdes#define ldns_sha256_SHORT_BLOCK_LENGTH (LDNS_SHA256_BLOCK_LENGTH - 8) 112238104Sdes#define ldns_sha384_SHORT_BLOCK_LENGTH (LDNS_SHA384_BLOCK_LENGTH - 16) 113238104Sdes#define ldns_sha512_SHORT_BLOCK_LENGTH (LDNS_SHA512_BLOCK_LENGTH - 16) 114238104Sdes 115238104Sdes 116238104Sdes/*** ENDIAN REVERSAL MACROS *******************************************/ 117238104Sdes#if BYTE_ORDER == LITTLE_ENDIAN 118238104Sdes#define REVERSE32(w,x) { \ 119238104Sdes sha2_word32 tmp = (w); \ 120238104Sdes tmp = (tmp >> 16) | (tmp << 16); \ 121238104Sdes (x) = ((tmp & 0xff00ff00UL) >> 8) | ((tmp & 0x00ff00ffUL) << 8); \ 122238104Sdes} 123238104Sdes#ifndef S_SPLINT_S 124238104Sdes#define REVERSE64(w,x) { \ 125238104Sdes sha2_word64 tmp = (w); \ 126238104Sdes tmp = (tmp >> 32) | (tmp << 32); \ 127238104Sdes tmp = ((tmp & 0xff00ff00ff00ff00ULL) >> 8) | \ 128238104Sdes ((tmp & 0x00ff00ff00ff00ffULL) << 8); \ 129238104Sdes (x) = ((tmp & 0xffff0000ffff0000ULL) >> 16) | \ 130238104Sdes ((tmp & 0x0000ffff0000ffffULL) << 16); \ 131238104Sdes} 132238104Sdes#else /* splint */ 133238104Sdes#define REVERSE64(w,x) /* splint */ 134238104Sdes#endif /* splint */ 135238104Sdes#endif /* BYTE_ORDER == LITTLE_ENDIAN */ 136238104Sdes 137238104Sdes/* 138238104Sdes * Macro for incrementally adding the unsigned 64-bit integer n to the 139238104Sdes * unsigned 128-bit integer (represented using a two-element array of 140238104Sdes * 64-bit words): 141238104Sdes */ 142238104Sdes#define ADDINC128(w,n) { \ 143238104Sdes (w)[0] += (sha2_word64)(n); \ 144238104Sdes if ((w)[0] < (n)) { \ 145238104Sdes (w)[1]++; \ 146238104Sdes } \ 147238104Sdes} 148238104Sdes#ifdef S_SPLINT_S 149238104Sdes#undef ADDINC128 150238104Sdes#define ADDINC128(w,n) /* splint */ 151238104Sdes#endif 152238104Sdes 153238104Sdes/* 154238104Sdes * Macros for copying blocks of memory and for zeroing out ranges 155238104Sdes * of memory. Using these macros makes it easy to switch from 156238104Sdes * using memset()/memcpy() and using bzero()/bcopy(). 157238104Sdes * 158238104Sdes * Please define either SHA2_USE_MEMSET_MEMCPY or define 159238104Sdes * SHA2_USE_BZERO_BCOPY depending on which function set you 160238104Sdes * choose to use: 161238104Sdes */ 162238104Sdes#if !defined(SHA2_USE_MEMSET_MEMCPY) && !defined(SHA2_USE_BZERO_BCOPY) 163238104Sdes/* Default to memset()/memcpy() if no option is specified */ 164238104Sdes#define SHA2_USE_MEMSET_MEMCPY 1 165238104Sdes#endif 166238104Sdes#if defined(SHA2_USE_MEMSET_MEMCPY) && defined(SHA2_USE_BZERO_BCOPY) 167238104Sdes/* Abort with an error if BOTH options are defined */ 168238104Sdes#error Define either SHA2_USE_MEMSET_MEMCPY or SHA2_USE_BZERO_BCOPY, not both! 169238104Sdes#endif 170238104Sdes 171238104Sdes#ifdef SHA2_USE_MEMSET_MEMCPY 172238104Sdes#define MEMSET_BZERO(p,l) memset((p), 0, (l)) 173238104Sdes#define MEMCPY_BCOPY(d,s,l) memcpy((d), (s), (l)) 174238104Sdes#endif 175238104Sdes#ifdef SHA2_USE_BZERO_BCOPY 176238104Sdes#define MEMSET_BZERO(p,l) bzero((p), (l)) 177238104Sdes#define MEMCPY_BCOPY(d,s,l) bcopy((s), (d), (l)) 178238104Sdes#endif 179238104Sdes 180238104Sdes 181238104Sdes/*** THE SIX LOGICAL FUNCTIONS ****************************************/ 182238104Sdes/* 183238104Sdes * Bit shifting and rotation (used by the six SHA-XYZ logical functions: 184238104Sdes * 185238104Sdes * NOTE: The naming of R and S appears backwards here (R is a SHIFT and 186238104Sdes * S is a ROTATION) because the SHA-256/384/512 description document 187238104Sdes * (see http://csrc.nist.gov/cryptval/shs/sha256-384-512.pdf) uses this 188238104Sdes * same "backwards" definition. 189238104Sdes */ 190238104Sdes/* Shift-right (used in SHA-256, SHA-384, and SHA-512): */ 191238104Sdes#define R(b,x) ((x) >> (b)) 192238104Sdes/* 32-bit Rotate-right (used in SHA-256): */ 193238104Sdes#define S32(b,x) (((x) >> (b)) | ((x) << (32 - (b)))) 194238104Sdes/* 64-bit Rotate-right (used in SHA-384 and SHA-512): */ 195238104Sdes#define S64(b,x) (((x) >> (b)) | ((x) << (64 - (b)))) 196238104Sdes 197238104Sdes/* Two of six logical functions used in SHA-256, SHA-384, and SHA-512: */ 198238104Sdes#define Ch(x,y,z) (((x) & (y)) ^ ((~(x)) & (z))) 199238104Sdes#define Maj(x,y,z) (((x) & (y)) ^ ((x) & (z)) ^ ((y) & (z))) 200238104Sdes 201238104Sdes/* Four of six logical functions used in SHA-256: */ 202238104Sdes#define Sigma0_256(x) (S32(2, (x)) ^ S32(13, (x)) ^ S32(22, (x))) 203238104Sdes#define Sigma1_256(x) (S32(6, (x)) ^ S32(11, (x)) ^ S32(25, (x))) 204238104Sdes#define sigma0_256(x) (S32(7, (x)) ^ S32(18, (x)) ^ R(3 , (x))) 205238104Sdes#define sigma1_256(x) (S32(17, (x)) ^ S32(19, (x)) ^ R(10, (x))) 206238104Sdes 207238104Sdes/* Four of six logical functions used in SHA-384 and SHA-512: */ 208238104Sdes#define Sigma0_512(x) (S64(28, (x)) ^ S64(34, (x)) ^ S64(39, (x))) 209238104Sdes#define Sigma1_512(x) (S64(14, (x)) ^ S64(18, (x)) ^ S64(41, (x))) 210238104Sdes#define sigma0_512(x) (S64( 1, (x)) ^ S64( 8, (x)) ^ R( 7, (x))) 211238104Sdes#define sigma1_512(x) (S64(19, (x)) ^ S64(61, (x)) ^ R( 6, (x))) 212238104Sdes 213238104Sdes/*** SHA-XYZ INITIAL HASH VALUES AND CONSTANTS ************************/ 214238104Sdes/* Hash constant words K for SHA-256: */ 215238104Sdesstatic const sha2_word32 K256[64] = { 216238104Sdes 0x428a2f98UL, 0x71374491UL, 0xb5c0fbcfUL, 0xe9b5dba5UL, 217238104Sdes 0x3956c25bUL, 0x59f111f1UL, 0x923f82a4UL, 0xab1c5ed5UL, 218238104Sdes 0xd807aa98UL, 0x12835b01UL, 0x243185beUL, 0x550c7dc3UL, 219238104Sdes 0x72be5d74UL, 0x80deb1feUL, 0x9bdc06a7UL, 0xc19bf174UL, 220238104Sdes 0xe49b69c1UL, 0xefbe4786UL, 0x0fc19dc6UL, 0x240ca1ccUL, 221238104Sdes 0x2de92c6fUL, 0x4a7484aaUL, 0x5cb0a9dcUL, 0x76f988daUL, 222238104Sdes 0x983e5152UL, 0xa831c66dUL, 0xb00327c8UL, 0xbf597fc7UL, 223238104Sdes 0xc6e00bf3UL, 0xd5a79147UL, 0x06ca6351UL, 0x14292967UL, 224238104Sdes 0x27b70a85UL, 0x2e1b2138UL, 0x4d2c6dfcUL, 0x53380d13UL, 225238104Sdes 0x650a7354UL, 0x766a0abbUL, 0x81c2c92eUL, 0x92722c85UL, 226238104Sdes 0xa2bfe8a1UL, 0xa81a664bUL, 0xc24b8b70UL, 0xc76c51a3UL, 227238104Sdes 0xd192e819UL, 0xd6990624UL, 0xf40e3585UL, 0x106aa070UL, 228238104Sdes 0x19a4c116UL, 0x1e376c08UL, 0x2748774cUL, 0x34b0bcb5UL, 229238104Sdes 0x391c0cb3UL, 0x4ed8aa4aUL, 0x5b9cca4fUL, 0x682e6ff3UL, 230238104Sdes 0x748f82eeUL, 0x78a5636fUL, 0x84c87814UL, 0x8cc70208UL, 231238104Sdes 0x90befffaUL, 0xa4506cebUL, 0xbef9a3f7UL, 0xc67178f2UL 232238104Sdes}; 233238104Sdes 234238104Sdes/* initial hash value H for SHA-256: */ 235238104Sdesstatic const sha2_word32 ldns_sha256_initial_hash_value[8] = { 236238104Sdes 0x6a09e667UL, 237238104Sdes 0xbb67ae85UL, 238238104Sdes 0x3c6ef372UL, 239238104Sdes 0xa54ff53aUL, 240238104Sdes 0x510e527fUL, 241238104Sdes 0x9b05688cUL, 242238104Sdes 0x1f83d9abUL, 243238104Sdes 0x5be0cd19UL 244238104Sdes}; 245238104Sdes 246238104Sdes/* Hash constant words K for SHA-384 and SHA-512: */ 247238104Sdesstatic const sha2_word64 K512[80] = { 248238104Sdes 0x428a2f98d728ae22ULL, 0x7137449123ef65cdULL, 249238104Sdes 0xb5c0fbcfec4d3b2fULL, 0xe9b5dba58189dbbcULL, 250238104Sdes 0x3956c25bf348b538ULL, 0x59f111f1b605d019ULL, 251238104Sdes 0x923f82a4af194f9bULL, 0xab1c5ed5da6d8118ULL, 252238104Sdes 0xd807aa98a3030242ULL, 0x12835b0145706fbeULL, 253238104Sdes 0x243185be4ee4b28cULL, 0x550c7dc3d5ffb4e2ULL, 254238104Sdes 0x72be5d74f27b896fULL, 0x80deb1fe3b1696b1ULL, 255238104Sdes 0x9bdc06a725c71235ULL, 0xc19bf174cf692694ULL, 256238104Sdes 0xe49b69c19ef14ad2ULL, 0xefbe4786384f25e3ULL, 257238104Sdes 0x0fc19dc68b8cd5b5ULL, 0x240ca1cc77ac9c65ULL, 258238104Sdes 0x2de92c6f592b0275ULL, 0x4a7484aa6ea6e483ULL, 259238104Sdes 0x5cb0a9dcbd41fbd4ULL, 0x76f988da831153b5ULL, 260238104Sdes 0x983e5152ee66dfabULL, 0xa831c66d2db43210ULL, 261238104Sdes 0xb00327c898fb213fULL, 0xbf597fc7beef0ee4ULL, 262238104Sdes 0xc6e00bf33da88fc2ULL, 0xd5a79147930aa725ULL, 263238104Sdes 0x06ca6351e003826fULL, 0x142929670a0e6e70ULL, 264238104Sdes 0x27b70a8546d22ffcULL, 0x2e1b21385c26c926ULL, 265238104Sdes 0x4d2c6dfc5ac42aedULL, 0x53380d139d95b3dfULL, 266238104Sdes 0x650a73548baf63deULL, 0x766a0abb3c77b2a8ULL, 267238104Sdes 0x81c2c92e47edaee6ULL, 0x92722c851482353bULL, 268238104Sdes 0xa2bfe8a14cf10364ULL, 0xa81a664bbc423001ULL, 269238104Sdes 0xc24b8b70d0f89791ULL, 0xc76c51a30654be30ULL, 270238104Sdes 0xd192e819d6ef5218ULL, 0xd69906245565a910ULL, 271238104Sdes 0xf40e35855771202aULL, 0x106aa07032bbd1b8ULL, 272238104Sdes 0x19a4c116b8d2d0c8ULL, 0x1e376c085141ab53ULL, 273238104Sdes 0x2748774cdf8eeb99ULL, 0x34b0bcb5e19b48a8ULL, 274238104Sdes 0x391c0cb3c5c95a63ULL, 0x4ed8aa4ae3418acbULL, 275238104Sdes 0x5b9cca4f7763e373ULL, 0x682e6ff3d6b2b8a3ULL, 276238104Sdes 0x748f82ee5defb2fcULL, 0x78a5636f43172f60ULL, 277238104Sdes 0x84c87814a1f0ab72ULL, 0x8cc702081a6439ecULL, 278238104Sdes 0x90befffa23631e28ULL, 0xa4506cebde82bde9ULL, 279238104Sdes 0xbef9a3f7b2c67915ULL, 0xc67178f2e372532bULL, 280238104Sdes 0xca273eceea26619cULL, 0xd186b8c721c0c207ULL, 281238104Sdes 0xeada7dd6cde0eb1eULL, 0xf57d4f7fee6ed178ULL, 282238104Sdes 0x06f067aa72176fbaULL, 0x0a637dc5a2c898a6ULL, 283238104Sdes 0x113f9804bef90daeULL, 0x1b710b35131c471bULL, 284238104Sdes 0x28db77f523047d84ULL, 0x32caab7b40c72493ULL, 285238104Sdes 0x3c9ebe0a15c9bebcULL, 0x431d67c49c100d4cULL, 286238104Sdes 0x4cc5d4becb3e42b6ULL, 0x597f299cfc657e2aULL, 287238104Sdes 0x5fcb6fab3ad6faecULL, 0x6c44198c4a475817ULL 288238104Sdes}; 289238104Sdes 290238104Sdes/* initial hash value H for SHA-384 */ 291238104Sdesstatic const sha2_word64 sha384_initial_hash_value[8] = { 292238104Sdes 0xcbbb9d5dc1059ed8ULL, 293238104Sdes 0x629a292a367cd507ULL, 294238104Sdes 0x9159015a3070dd17ULL, 295238104Sdes 0x152fecd8f70e5939ULL, 296238104Sdes 0x67332667ffc00b31ULL, 297238104Sdes 0x8eb44a8768581511ULL, 298238104Sdes 0xdb0c2e0d64f98fa7ULL, 299238104Sdes 0x47b5481dbefa4fa4ULL 300238104Sdes}; 301238104Sdes 302238104Sdes/* initial hash value H for SHA-512 */ 303238104Sdesstatic const sha2_word64 sha512_initial_hash_value[8] = { 304238104Sdes 0x6a09e667f3bcc908ULL, 305238104Sdes 0xbb67ae8584caa73bULL, 306238104Sdes 0x3c6ef372fe94f82bULL, 307238104Sdes 0xa54ff53a5f1d36f1ULL, 308238104Sdes 0x510e527fade682d1ULL, 309238104Sdes 0x9b05688c2b3e6c1fULL, 310238104Sdes 0x1f83d9abfb41bd6bULL, 311238104Sdes 0x5be0cd19137e2179ULL 312238104Sdes}; 313238104Sdes 314238104Sdes/*** SHA-256: *********************************************************/ 315238104Sdesvoid ldns_sha256_init(ldns_sha256_CTX* context) { 316238104Sdes if (context == (ldns_sha256_CTX*)0) { 317238104Sdes return; 318238104Sdes } 319238104Sdes MEMCPY_BCOPY(context->state, ldns_sha256_initial_hash_value, LDNS_SHA256_DIGEST_LENGTH); 320238104Sdes MEMSET_BZERO(context->buffer, LDNS_SHA256_BLOCK_LENGTH); 321238104Sdes context->bitcount = 0; 322238104Sdes} 323238104Sdes 324238104Sdes#ifdef SHA2_UNROLL_TRANSFORM 325238104Sdes 326238104Sdes/* Unrolled SHA-256 round macros: */ 327238104Sdes 328238104Sdes#if BYTE_ORDER == LITTLE_ENDIAN 329238104Sdes 330238104Sdes#define ROUND256_0_TO_15(a,b,c,d,e,f,g,h) \ 331238104Sdes REVERSE32(*data++, W256[j]); \ 332238104Sdes T1 = (h) + Sigma1_256(e) + Ch((e), (f), (g)) + \ 333238104Sdes K256[j] + W256[j]; \ 334238104Sdes (d) += T1; \ 335238104Sdes (h) = T1 + Sigma0_256(a) + Maj((a), (b), (c)); \ 336238104Sdes j++ 337238104Sdes 338238104Sdes 339238104Sdes#else /* BYTE_ORDER == LITTLE_ENDIAN */ 340238104Sdes 341238104Sdes#define ROUND256_0_TO_15(a,b,c,d,e,f,g,h) \ 342238104Sdes T1 = (h) + Sigma1_256(e) + Ch((e), (f), (g)) + \ 343238104Sdes K256[j] + (W256[j] = *data++); \ 344238104Sdes (d) += T1; \ 345238104Sdes (h) = T1 + Sigma0_256(a) + Maj((a), (b), (c)); \ 346238104Sdes j++ 347238104Sdes 348238104Sdes#endif /* BYTE_ORDER == LITTLE_ENDIAN */ 349238104Sdes 350238104Sdes#define ROUND256(a,b,c,d,e,f,g,h) \ 351238104Sdes s0 = W256[(j+1)&0x0f]; \ 352238104Sdes s0 = sigma0_256(s0); \ 353238104Sdes s1 = W256[(j+14)&0x0f]; \ 354238104Sdes s1 = sigma1_256(s1); \ 355238104Sdes T1 = (h) + Sigma1_256(e) + Ch((e), (f), (g)) + K256[j] + \ 356238104Sdes (W256[j&0x0f] += s1 + W256[(j+9)&0x0f] + s0); \ 357238104Sdes (d) += T1; \ 358238104Sdes (h) = T1 + Sigma0_256(a) + Maj((a), (b), (c)); \ 359238104Sdes j++ 360238104Sdes 361238104Sdesstatic void ldns_sha256_Transform(ldns_sha256_CTX* context, 362238104Sdes const sha2_word32* data) { 363238104Sdes sha2_word32 a, b, c, d, e, f, g, h, s0, s1; 364238104Sdes sha2_word32 T1, *W256; 365238104Sdes int j; 366238104Sdes 367238104Sdes W256 = (sha2_word32*)context->buffer; 368238104Sdes 369238104Sdes /* initialize registers with the prev. intermediate value */ 370238104Sdes a = context->state[0]; 371238104Sdes b = context->state[1]; 372238104Sdes c = context->state[2]; 373238104Sdes d = context->state[3]; 374238104Sdes e = context->state[4]; 375238104Sdes f = context->state[5]; 376238104Sdes g = context->state[6]; 377238104Sdes h = context->state[7]; 378238104Sdes 379238104Sdes j = 0; 380238104Sdes do { 381238104Sdes /* Rounds 0 to 15 (unrolled): */ 382238104Sdes ROUND256_0_TO_15(a,b,c,d,e,f,g,h); 383238104Sdes ROUND256_0_TO_15(h,a,b,c,d,e,f,g); 384238104Sdes ROUND256_0_TO_15(g,h,a,b,c,d,e,f); 385238104Sdes ROUND256_0_TO_15(f,g,h,a,b,c,d,e); 386238104Sdes ROUND256_0_TO_15(e,f,g,h,a,b,c,d); 387238104Sdes ROUND256_0_TO_15(d,e,f,g,h,a,b,c); 388238104Sdes ROUND256_0_TO_15(c,d,e,f,g,h,a,b); 389238104Sdes ROUND256_0_TO_15(b,c,d,e,f,g,h,a); 390238104Sdes } while (j < 16); 391238104Sdes 392238104Sdes /* Now for the remaining rounds to 64: */ 393238104Sdes do { 394238104Sdes ROUND256(a,b,c,d,e,f,g,h); 395238104Sdes ROUND256(h,a,b,c,d,e,f,g); 396238104Sdes ROUND256(g,h,a,b,c,d,e,f); 397238104Sdes ROUND256(f,g,h,a,b,c,d,e); 398238104Sdes ROUND256(e,f,g,h,a,b,c,d); 399238104Sdes ROUND256(d,e,f,g,h,a,b,c); 400238104Sdes ROUND256(c,d,e,f,g,h,a,b); 401238104Sdes ROUND256(b,c,d,e,f,g,h,a); 402238104Sdes } while (j < 64); 403238104Sdes 404238104Sdes /* Compute the current intermediate hash value */ 405238104Sdes context->state[0] += a; 406238104Sdes context->state[1] += b; 407238104Sdes context->state[2] += c; 408238104Sdes context->state[3] += d; 409238104Sdes context->state[4] += e; 410238104Sdes context->state[5] += f; 411238104Sdes context->state[6] += g; 412238104Sdes context->state[7] += h; 413238104Sdes 414238104Sdes /* Clean up */ 415238104Sdes a = b = c = d = e = f = g = h = T1 = 0; 416238104Sdes} 417238104Sdes 418238104Sdes#else /* SHA2_UNROLL_TRANSFORM */ 419238104Sdes 420238104Sdesstatic void ldns_sha256_Transform(ldns_sha256_CTX* context, 421238104Sdes const sha2_word32* data) { 422238104Sdes sha2_word32 a, b, c, d, e, f, g, h, s0, s1; 423238104Sdes sha2_word32 T1, T2, *W256; 424238104Sdes int j; 425238104Sdes 426238104Sdes W256 = (sha2_word32*)context->buffer; 427238104Sdes 428238104Sdes /* initialize registers with the prev. intermediate value */ 429238104Sdes a = context->state[0]; 430238104Sdes b = context->state[1]; 431238104Sdes c = context->state[2]; 432238104Sdes d = context->state[3]; 433238104Sdes e = context->state[4]; 434238104Sdes f = context->state[5]; 435238104Sdes g = context->state[6]; 436238104Sdes h = context->state[7]; 437238104Sdes 438238104Sdes j = 0; 439238104Sdes do { 440238104Sdes#if BYTE_ORDER == LITTLE_ENDIAN 441238104Sdes /* Copy data while converting to host byte order */ 442238104Sdes REVERSE32(*data++,W256[j]); 443238104Sdes /* Apply the SHA-256 compression function to update a..h */ 444238104Sdes T1 = h + Sigma1_256(e) + Ch(e, f, g) + K256[j] + W256[j]; 445238104Sdes#else /* BYTE_ORDER == LITTLE_ENDIAN */ 446238104Sdes /* Apply the SHA-256 compression function to update a..h with copy */ 447238104Sdes T1 = h + Sigma1_256(e) + Ch(e, f, g) + K256[j] + (W256[j] = *data++); 448238104Sdes#endif /* BYTE_ORDER == LITTLE_ENDIAN */ 449238104Sdes T2 = Sigma0_256(a) + Maj(a, b, c); 450238104Sdes h = g; 451238104Sdes g = f; 452238104Sdes f = e; 453238104Sdes e = d + T1; 454238104Sdes d = c; 455238104Sdes c = b; 456238104Sdes b = a; 457238104Sdes a = T1 + T2; 458238104Sdes 459238104Sdes j++; 460238104Sdes } while (j < 16); 461238104Sdes 462238104Sdes do { 463238104Sdes /* Part of the message block expansion: */ 464238104Sdes s0 = W256[(j+1)&0x0f]; 465238104Sdes s0 = sigma0_256(s0); 466238104Sdes s1 = W256[(j+14)&0x0f]; 467238104Sdes s1 = sigma1_256(s1); 468238104Sdes 469238104Sdes /* Apply the SHA-256 compression function to update a..h */ 470238104Sdes T1 = h + Sigma1_256(e) + Ch(e, f, g) + K256[j] + 471238104Sdes (W256[j&0x0f] += s1 + W256[(j+9)&0x0f] + s0); 472238104Sdes T2 = Sigma0_256(a) + Maj(a, b, c); 473238104Sdes h = g; 474238104Sdes g = f; 475238104Sdes f = e; 476238104Sdes e = d + T1; 477238104Sdes d = c; 478238104Sdes c = b; 479238104Sdes b = a; 480238104Sdes a = T1 + T2; 481238104Sdes 482238104Sdes j++; 483238104Sdes } while (j < 64); 484238104Sdes 485238104Sdes /* Compute the current intermediate hash value */ 486238104Sdes context->state[0] += a; 487238104Sdes context->state[1] += b; 488238104Sdes context->state[2] += c; 489238104Sdes context->state[3] += d; 490238104Sdes context->state[4] += e; 491238104Sdes context->state[5] += f; 492238104Sdes context->state[6] += g; 493238104Sdes context->state[7] += h; 494238104Sdes 495238104Sdes /* Clean up */ 496238104Sdes a = b = c = d = e = f = g = h = T1 = T2 = 0; 497238104Sdes} 498238104Sdes 499238104Sdes#endif /* SHA2_UNROLL_TRANSFORM */ 500238104Sdes 501238104Sdesvoid ldns_sha256_update(ldns_sha256_CTX* context, const sha2_byte *data, size_t len) { 502238104Sdes size_t freespace, usedspace; 503238104Sdes 504238104Sdes if (len == 0) { 505238104Sdes /* Calling with no data is valid - we do nothing */ 506238104Sdes return; 507238104Sdes } 508238104Sdes 509238104Sdes /* Sanity check: */ 510238104Sdes assert(context != (ldns_sha256_CTX*)0 && data != (sha2_byte*)0); 511238104Sdes 512238104Sdes usedspace = (context->bitcount >> 3) % LDNS_SHA256_BLOCK_LENGTH; 513238104Sdes if (usedspace > 0) { 514238104Sdes /* Calculate how much free space is available in the buffer */ 515238104Sdes freespace = LDNS_SHA256_BLOCK_LENGTH - usedspace; 516238104Sdes 517238104Sdes if (len >= freespace) { 518238104Sdes /* Fill the buffer completely and process it */ 519238104Sdes MEMCPY_BCOPY(&context->buffer[usedspace], data, freespace); 520238104Sdes context->bitcount += freespace << 3; 521238104Sdes len -= freespace; 522238104Sdes data += freespace; 523238104Sdes ldns_sha256_Transform(context, (sha2_word32*)context->buffer); 524238104Sdes } else { 525238104Sdes /* The buffer is not yet full */ 526238104Sdes MEMCPY_BCOPY(&context->buffer[usedspace], data, len); 527238104Sdes context->bitcount += len << 3; 528238104Sdes /* Clean up: */ 529238104Sdes usedspace = freespace = 0; 530238104Sdes return; 531238104Sdes } 532238104Sdes } 533238104Sdes while (len >= LDNS_SHA256_BLOCK_LENGTH) { 534238104Sdes /* Process as many complete blocks as we can */ 535238104Sdes ldns_sha256_Transform(context, (sha2_word32*)data); 536238104Sdes context->bitcount += LDNS_SHA256_BLOCK_LENGTH << 3; 537238104Sdes len -= LDNS_SHA256_BLOCK_LENGTH; 538238104Sdes data += LDNS_SHA256_BLOCK_LENGTH; 539238104Sdes } 540238104Sdes if (len > 0) { 541238104Sdes /* There's left-overs, so save 'em */ 542238104Sdes MEMCPY_BCOPY(context->buffer, data, len); 543238104Sdes context->bitcount += len << 3; 544238104Sdes } 545238104Sdes /* Clean up: */ 546238104Sdes usedspace = freespace = 0; 547238104Sdes} 548238104Sdes 549238104Sdesvoid ldns_sha256_final(sha2_byte digest[], ldns_sha256_CTX* context) { 550238104Sdes sha2_word32 *d = (sha2_word32*)digest; 551238104Sdes size_t usedspace; 552238104Sdes 553238104Sdes /* Sanity check: */ 554238104Sdes assert(context != (ldns_sha256_CTX*)0); 555238104Sdes 556238104Sdes /* If no digest buffer is passed, we don't bother doing this: */ 557238104Sdes if (digest != (sha2_byte*)0) { 558238104Sdes usedspace = (context->bitcount >> 3) % LDNS_SHA256_BLOCK_LENGTH; 559238104Sdes#if BYTE_ORDER == LITTLE_ENDIAN 560238104Sdes /* Convert FROM host byte order */ 561238104Sdes REVERSE64(context->bitcount,context->bitcount); 562238104Sdes#endif 563238104Sdes if (usedspace > 0) { 564238104Sdes /* Begin padding with a 1 bit: */ 565238104Sdes context->buffer[usedspace++] = 0x80; 566238104Sdes 567238104Sdes if (usedspace <= ldns_sha256_SHORT_BLOCK_LENGTH) { 568238104Sdes /* Set-up for the last transform: */ 569238104Sdes MEMSET_BZERO(&context->buffer[usedspace], ldns_sha256_SHORT_BLOCK_LENGTH - usedspace); 570238104Sdes } else { 571238104Sdes if (usedspace < LDNS_SHA256_BLOCK_LENGTH) { 572238104Sdes MEMSET_BZERO(&context->buffer[usedspace], LDNS_SHA256_BLOCK_LENGTH - usedspace); 573238104Sdes } 574238104Sdes /* Do second-to-last transform: */ 575238104Sdes ldns_sha256_Transform(context, (sha2_word32*)context->buffer); 576238104Sdes 577238104Sdes /* And set-up for the last transform: */ 578238104Sdes MEMSET_BZERO(context->buffer, ldns_sha256_SHORT_BLOCK_LENGTH); 579238104Sdes } 580238104Sdes } else { 581238104Sdes /* Set-up for the last transform: */ 582238104Sdes MEMSET_BZERO(context->buffer, ldns_sha256_SHORT_BLOCK_LENGTH); 583238104Sdes 584238104Sdes /* Begin padding with a 1 bit: */ 585238104Sdes *context->buffer = 0x80; 586238104Sdes } 587238104Sdes /* Set the bit count: */ 588238104Sdes *(sha2_word64*)&context->buffer[ldns_sha256_SHORT_BLOCK_LENGTH] = context->bitcount; 589238104Sdes 590238104Sdes /* final transform: */ 591238104Sdes ldns_sha256_Transform(context, (sha2_word32*)context->buffer); 592238104Sdes 593238104Sdes#if BYTE_ORDER == LITTLE_ENDIAN 594238104Sdes { 595238104Sdes /* Convert TO host byte order */ 596238104Sdes int j; 597238104Sdes for (j = 0; j < 8; j++) { 598238104Sdes REVERSE32(context->state[j],context->state[j]); 599238104Sdes *d++ = context->state[j]; 600238104Sdes } 601238104Sdes } 602238104Sdes#else 603238104Sdes MEMCPY_BCOPY(d, context->state, LDNS_SHA256_DIGEST_LENGTH); 604238104Sdes#endif 605238104Sdes } 606238104Sdes 607238104Sdes /* Clean up state data: */ 608238104Sdes MEMSET_BZERO(context, sizeof(ldns_sha256_CTX)); 609238104Sdes usedspace = 0; 610238104Sdes} 611238104Sdes 612238104Sdesunsigned char * 613238104Sdesldns_sha256(unsigned char *data, unsigned int data_len, unsigned char *digest) 614238104Sdes{ 615238104Sdes ldns_sha256_CTX ctx; 616238104Sdes ldns_sha256_init(&ctx); 617238104Sdes ldns_sha256_update(&ctx, data, data_len); 618238104Sdes ldns_sha256_final(digest, &ctx); 619238104Sdes return digest; 620238104Sdes} 621238104Sdes 622238104Sdes/*** SHA-512: *********************************************************/ 623238104Sdesvoid ldns_sha512_init(ldns_sha512_CTX* context) { 624238104Sdes if (context == (ldns_sha512_CTX*)0) { 625238104Sdes return; 626238104Sdes } 627238104Sdes MEMCPY_BCOPY(context->state, sha512_initial_hash_value, LDNS_SHA512_DIGEST_LENGTH); 628238104Sdes MEMSET_BZERO(context->buffer, LDNS_SHA512_BLOCK_LENGTH); 629238104Sdes context->bitcount[0] = context->bitcount[1] = 0; 630238104Sdes} 631238104Sdes 632238104Sdes#ifdef SHA2_UNROLL_TRANSFORM 633238104Sdes 634238104Sdes/* Unrolled SHA-512 round macros: */ 635238104Sdes#if BYTE_ORDER == LITTLE_ENDIAN 636238104Sdes 637238104Sdes#define ROUND512_0_TO_15(a,b,c,d,e,f,g,h) \ 638238104Sdes REVERSE64(*data++, W512[j]); \ 639238104Sdes T1 = (h) + Sigma1_512(e) + Ch((e), (f), (g)) + \ 640238104Sdes K512[j] + W512[j]; \ 641238104Sdes (d) += T1, \ 642238104Sdes (h) = T1 + Sigma0_512(a) + Maj((a), (b), (c)), \ 643238104Sdes j++ 644238104Sdes 645238104Sdes 646238104Sdes#else /* BYTE_ORDER == LITTLE_ENDIAN */ 647238104Sdes 648238104Sdes#define ROUND512_0_TO_15(a,b,c,d,e,f,g,h) \ 649238104Sdes T1 = (h) + Sigma1_512(e) + Ch((e), (f), (g)) + \ 650238104Sdes K512[j] + (W512[j] = *data++); \ 651238104Sdes (d) += T1; \ 652238104Sdes (h) = T1 + Sigma0_512(a) + Maj((a), (b), (c)); \ 653238104Sdes j++ 654238104Sdes 655238104Sdes#endif /* BYTE_ORDER == LITTLE_ENDIAN */ 656238104Sdes 657238104Sdes#define ROUND512(a,b,c,d,e,f,g,h) \ 658238104Sdes s0 = W512[(j+1)&0x0f]; \ 659238104Sdes s0 = sigma0_512(s0); \ 660238104Sdes s1 = W512[(j+14)&0x0f]; \ 661238104Sdes s1 = sigma1_512(s1); \ 662238104Sdes T1 = (h) + Sigma1_512(e) + Ch((e), (f), (g)) + K512[j] + \ 663238104Sdes (W512[j&0x0f] += s1 + W512[(j+9)&0x0f] + s0); \ 664238104Sdes (d) += T1; \ 665238104Sdes (h) = T1 + Sigma0_512(a) + Maj((a), (b), (c)); \ 666238104Sdes j++ 667238104Sdes 668238104Sdesstatic void ldns_sha512_Transform(ldns_sha512_CTX* context, 669238104Sdes const sha2_word64* data) { 670238104Sdes sha2_word64 a, b, c, d, e, f, g, h, s0, s1; 671238104Sdes sha2_word64 T1, *W512 = (sha2_word64*)context->buffer; 672238104Sdes int j; 673238104Sdes 674238104Sdes /* initialize registers with the prev. intermediate value */ 675238104Sdes a = context->state[0]; 676238104Sdes b = context->state[1]; 677238104Sdes c = context->state[2]; 678238104Sdes d = context->state[3]; 679238104Sdes e = context->state[4]; 680238104Sdes f = context->state[5]; 681238104Sdes g = context->state[6]; 682238104Sdes h = context->state[7]; 683238104Sdes 684238104Sdes j = 0; 685238104Sdes do { 686238104Sdes ROUND512_0_TO_15(a,b,c,d,e,f,g,h); 687238104Sdes ROUND512_0_TO_15(h,a,b,c,d,e,f,g); 688238104Sdes ROUND512_0_TO_15(g,h,a,b,c,d,e,f); 689238104Sdes ROUND512_0_TO_15(f,g,h,a,b,c,d,e); 690238104Sdes ROUND512_0_TO_15(e,f,g,h,a,b,c,d); 691238104Sdes ROUND512_0_TO_15(d,e,f,g,h,a,b,c); 692238104Sdes ROUND512_0_TO_15(c,d,e,f,g,h,a,b); 693238104Sdes ROUND512_0_TO_15(b,c,d,e,f,g,h,a); 694238104Sdes } while (j < 16); 695238104Sdes 696238104Sdes /* Now for the remaining rounds up to 79: */ 697238104Sdes do { 698238104Sdes ROUND512(a,b,c,d,e,f,g,h); 699238104Sdes ROUND512(h,a,b,c,d,e,f,g); 700238104Sdes ROUND512(g,h,a,b,c,d,e,f); 701238104Sdes ROUND512(f,g,h,a,b,c,d,e); 702238104Sdes ROUND512(e,f,g,h,a,b,c,d); 703238104Sdes ROUND512(d,e,f,g,h,a,b,c); 704238104Sdes ROUND512(c,d,e,f,g,h,a,b); 705238104Sdes ROUND512(b,c,d,e,f,g,h,a); 706238104Sdes } while (j < 80); 707238104Sdes 708238104Sdes /* Compute the current intermediate hash value */ 709238104Sdes context->state[0] += a; 710238104Sdes context->state[1] += b; 711238104Sdes context->state[2] += c; 712238104Sdes context->state[3] += d; 713238104Sdes context->state[4] += e; 714238104Sdes context->state[5] += f; 715238104Sdes context->state[6] += g; 716238104Sdes context->state[7] += h; 717238104Sdes 718238104Sdes /* Clean up */ 719238104Sdes a = b = c = d = e = f = g = h = T1 = 0; 720238104Sdes} 721238104Sdes 722238104Sdes#else /* SHA2_UNROLL_TRANSFORM */ 723238104Sdes 724238104Sdesstatic void ldns_sha512_Transform(ldns_sha512_CTX* context, 725238104Sdes const sha2_word64* data) { 726238104Sdes sha2_word64 a, b, c, d, e, f, g, h, s0, s1; 727238104Sdes sha2_word64 T1, T2, *W512 = (sha2_word64*)context->buffer; 728238104Sdes int j; 729238104Sdes 730238104Sdes /* initialize registers with the prev. intermediate value */ 731238104Sdes a = context->state[0]; 732238104Sdes b = context->state[1]; 733238104Sdes c = context->state[2]; 734238104Sdes d = context->state[3]; 735238104Sdes e = context->state[4]; 736238104Sdes f = context->state[5]; 737238104Sdes g = context->state[6]; 738238104Sdes h = context->state[7]; 739238104Sdes 740238104Sdes j = 0; 741238104Sdes do { 742238104Sdes#if BYTE_ORDER == LITTLE_ENDIAN 743238104Sdes /* Convert TO host byte order */ 744238104Sdes REVERSE64(*data++, W512[j]); 745238104Sdes /* Apply the SHA-512 compression function to update a..h */ 746238104Sdes T1 = h + Sigma1_512(e) + Ch(e, f, g) + K512[j] + W512[j]; 747238104Sdes#else /* BYTE_ORDER == LITTLE_ENDIAN */ 748238104Sdes /* Apply the SHA-512 compression function to update a..h with copy */ 749238104Sdes T1 = h + Sigma1_512(e) + Ch(e, f, g) + K512[j] + (W512[j] = *data++); 750238104Sdes#endif /* BYTE_ORDER == LITTLE_ENDIAN */ 751238104Sdes T2 = Sigma0_512(a) + Maj(a, b, c); 752238104Sdes h = g; 753238104Sdes g = f; 754238104Sdes f = e; 755238104Sdes e = d + T1; 756238104Sdes d = c; 757238104Sdes c = b; 758238104Sdes b = a; 759238104Sdes a = T1 + T2; 760238104Sdes 761238104Sdes j++; 762238104Sdes } while (j < 16); 763238104Sdes 764238104Sdes do { 765238104Sdes /* Part of the message block expansion: */ 766238104Sdes s0 = W512[(j+1)&0x0f]; 767238104Sdes s0 = sigma0_512(s0); 768238104Sdes s1 = W512[(j+14)&0x0f]; 769238104Sdes s1 = sigma1_512(s1); 770238104Sdes 771238104Sdes /* Apply the SHA-512 compression function to update a..h */ 772238104Sdes T1 = h + Sigma1_512(e) + Ch(e, f, g) + K512[j] + 773238104Sdes (W512[j&0x0f] += s1 + W512[(j+9)&0x0f] + s0); 774238104Sdes T2 = Sigma0_512(a) + Maj(a, b, c); 775238104Sdes h = g; 776238104Sdes g = f; 777238104Sdes f = e; 778238104Sdes e = d + T1; 779238104Sdes d = c; 780238104Sdes c = b; 781238104Sdes b = a; 782238104Sdes a = T1 + T2; 783238104Sdes 784238104Sdes j++; 785238104Sdes } while (j < 80); 786238104Sdes 787238104Sdes /* Compute the current intermediate hash value */ 788238104Sdes context->state[0] += a; 789238104Sdes context->state[1] += b; 790238104Sdes context->state[2] += c; 791238104Sdes context->state[3] += d; 792238104Sdes context->state[4] += e; 793238104Sdes context->state[5] += f; 794238104Sdes context->state[6] += g; 795238104Sdes context->state[7] += h; 796238104Sdes 797238104Sdes /* Clean up */ 798238104Sdes a = b = c = d = e = f = g = h = T1 = T2 = 0; 799238104Sdes} 800238104Sdes 801238104Sdes#endif /* SHA2_UNROLL_TRANSFORM */ 802238104Sdes 803238104Sdesvoid ldns_sha512_update(ldns_sha512_CTX* context, const sha2_byte *data, size_t len) { 804238104Sdes size_t freespace, usedspace; 805238104Sdes 806238104Sdes if (len == 0) { 807238104Sdes /* Calling with no data is valid - we do nothing */ 808238104Sdes return; 809238104Sdes } 810238104Sdes 811238104Sdes /* Sanity check: */ 812238104Sdes assert(context != (ldns_sha512_CTX*)0 && data != (sha2_byte*)0); 813238104Sdes 814238104Sdes usedspace = (context->bitcount[0] >> 3) % LDNS_SHA512_BLOCK_LENGTH; 815238104Sdes if (usedspace > 0) { 816238104Sdes /* Calculate how much free space is available in the buffer */ 817238104Sdes freespace = LDNS_SHA512_BLOCK_LENGTH - usedspace; 818238104Sdes 819238104Sdes if (len >= freespace) { 820238104Sdes /* Fill the buffer completely and process it */ 821238104Sdes MEMCPY_BCOPY(&context->buffer[usedspace], data, freespace); 822238104Sdes ADDINC128(context->bitcount, freespace << 3); 823238104Sdes len -= freespace; 824238104Sdes data += freespace; 825238104Sdes ldns_sha512_Transform(context, (sha2_word64*)context->buffer); 826238104Sdes } else { 827238104Sdes /* The buffer is not yet full */ 828238104Sdes MEMCPY_BCOPY(&context->buffer[usedspace], data, len); 829238104Sdes ADDINC128(context->bitcount, len << 3); 830238104Sdes /* Clean up: */ 831238104Sdes usedspace = freespace = 0; 832238104Sdes return; 833238104Sdes } 834238104Sdes } 835238104Sdes while (len >= LDNS_SHA512_BLOCK_LENGTH) { 836238104Sdes /* Process as many complete blocks as we can */ 837238104Sdes ldns_sha512_Transform(context, (sha2_word64*)data); 838238104Sdes ADDINC128(context->bitcount, LDNS_SHA512_BLOCK_LENGTH << 3); 839238104Sdes len -= LDNS_SHA512_BLOCK_LENGTH; 840238104Sdes data += LDNS_SHA512_BLOCK_LENGTH; 841238104Sdes } 842238104Sdes if (len > 0) { 843238104Sdes /* There's left-overs, so save 'em */ 844238104Sdes MEMCPY_BCOPY(context->buffer, data, len); 845238104Sdes ADDINC128(context->bitcount, len << 3); 846238104Sdes } 847238104Sdes /* Clean up: */ 848238104Sdes usedspace = freespace = 0; 849238104Sdes} 850238104Sdes 851238104Sdesstatic void ldns_sha512_Last(ldns_sha512_CTX* context) { 852238104Sdes size_t usedspace; 853238104Sdes 854238104Sdes usedspace = (context->bitcount[0] >> 3) % LDNS_SHA512_BLOCK_LENGTH; 855238104Sdes#if BYTE_ORDER == LITTLE_ENDIAN 856238104Sdes /* Convert FROM host byte order */ 857238104Sdes REVERSE64(context->bitcount[0],context->bitcount[0]); 858238104Sdes REVERSE64(context->bitcount[1],context->bitcount[1]); 859238104Sdes#endif 860238104Sdes if (usedspace > 0) { 861238104Sdes /* Begin padding with a 1 bit: */ 862238104Sdes context->buffer[usedspace++] = 0x80; 863238104Sdes 864238104Sdes if (usedspace <= ldns_sha512_SHORT_BLOCK_LENGTH) { 865238104Sdes /* Set-up for the last transform: */ 866238104Sdes MEMSET_BZERO(&context->buffer[usedspace], ldns_sha512_SHORT_BLOCK_LENGTH - usedspace); 867238104Sdes } else { 868238104Sdes if (usedspace < LDNS_SHA512_BLOCK_LENGTH) { 869238104Sdes MEMSET_BZERO(&context->buffer[usedspace], LDNS_SHA512_BLOCK_LENGTH - usedspace); 870238104Sdes } 871238104Sdes /* Do second-to-last transform: */ 872238104Sdes ldns_sha512_Transform(context, (sha2_word64*)context->buffer); 873238104Sdes 874238104Sdes /* And set-up for the last transform: */ 875238104Sdes MEMSET_BZERO(context->buffer, LDNS_SHA512_BLOCK_LENGTH - 2); 876238104Sdes } 877238104Sdes } else { 878238104Sdes /* Prepare for final transform: */ 879238104Sdes MEMSET_BZERO(context->buffer, ldns_sha512_SHORT_BLOCK_LENGTH); 880238104Sdes 881238104Sdes /* Begin padding with a 1 bit: */ 882238104Sdes *context->buffer = 0x80; 883238104Sdes } 884238104Sdes /* Store the length of input data (in bits): */ 885238104Sdes *(sha2_word64*)&context->buffer[ldns_sha512_SHORT_BLOCK_LENGTH] = context->bitcount[1]; 886238104Sdes *(sha2_word64*)&context->buffer[ldns_sha512_SHORT_BLOCK_LENGTH+8] = context->bitcount[0]; 887238104Sdes 888238104Sdes /* final transform: */ 889238104Sdes ldns_sha512_Transform(context, (sha2_word64*)context->buffer); 890238104Sdes} 891238104Sdes 892238104Sdesvoid ldns_sha512_final(sha2_byte digest[], ldns_sha512_CTX* context) { 893238104Sdes sha2_word64 *d = (sha2_word64*)digest; 894238104Sdes 895238104Sdes /* Sanity check: */ 896238104Sdes assert(context != (ldns_sha512_CTX*)0); 897238104Sdes 898238104Sdes /* If no digest buffer is passed, we don't bother doing this: */ 899238104Sdes if (digest != (sha2_byte*)0) { 900238104Sdes ldns_sha512_Last(context); 901238104Sdes 902238104Sdes /* Save the hash data for output: */ 903238104Sdes#if BYTE_ORDER == LITTLE_ENDIAN 904238104Sdes { 905238104Sdes /* Convert TO host byte order */ 906238104Sdes int j; 907238104Sdes for (j = 0; j < 8; j++) { 908238104Sdes REVERSE64(context->state[j],context->state[j]); 909238104Sdes *d++ = context->state[j]; 910238104Sdes } 911238104Sdes } 912238104Sdes#else 913238104Sdes MEMCPY_BCOPY(d, context->state, LDNS_SHA512_DIGEST_LENGTH); 914238104Sdes#endif 915238104Sdes } 916238104Sdes 917238104Sdes /* Zero out state data */ 918238104Sdes MEMSET_BZERO(context, sizeof(ldns_sha512_CTX)); 919238104Sdes} 920238104Sdes 921238104Sdesunsigned char * 922238104Sdesldns_sha512(unsigned char *data, unsigned int data_len, unsigned char *digest) 923238104Sdes{ 924238104Sdes ldns_sha512_CTX ctx; 925238104Sdes ldns_sha512_init(&ctx); 926238104Sdes ldns_sha512_update(&ctx, data, data_len); 927238104Sdes ldns_sha512_final(digest, &ctx); 928238104Sdes return digest; 929238104Sdes} 930238104Sdes 931238104Sdes/*** SHA-384: *********************************************************/ 932238104Sdesvoid ldns_sha384_init(ldns_sha384_CTX* context) { 933238104Sdes if (context == (ldns_sha384_CTX*)0) { 934238104Sdes return; 935238104Sdes } 936238104Sdes MEMCPY_BCOPY(context->state, sha384_initial_hash_value, LDNS_SHA512_DIGEST_LENGTH); 937238104Sdes MEMSET_BZERO(context->buffer, LDNS_SHA384_BLOCK_LENGTH); 938238104Sdes context->bitcount[0] = context->bitcount[1] = 0; 939238104Sdes} 940238104Sdes 941238104Sdesvoid ldns_sha384_update(ldns_sha384_CTX* context, const sha2_byte* data, size_t len) { 942238104Sdes ldns_sha512_update((ldns_sha512_CTX*)context, data, len); 943238104Sdes} 944238104Sdes 945238104Sdesvoid ldns_sha384_final(sha2_byte digest[], ldns_sha384_CTX* context) { 946238104Sdes sha2_word64 *d = (sha2_word64*)digest; 947238104Sdes 948238104Sdes /* Sanity check: */ 949238104Sdes assert(context != (ldns_sha384_CTX*)0); 950238104Sdes 951238104Sdes /* If no digest buffer is passed, we don't bother doing this: */ 952238104Sdes if (digest != (sha2_byte*)0) { 953238104Sdes ldns_sha512_Last((ldns_sha512_CTX*)context); 954238104Sdes 955238104Sdes /* Save the hash data for output: */ 956238104Sdes#if BYTE_ORDER == LITTLE_ENDIAN 957238104Sdes { 958238104Sdes /* Convert TO host byte order */ 959238104Sdes int j; 960238104Sdes for (j = 0; j < 6; j++) { 961238104Sdes REVERSE64(context->state[j],context->state[j]); 962238104Sdes *d++ = context->state[j]; 963238104Sdes } 964238104Sdes } 965238104Sdes#else 966238104Sdes MEMCPY_BCOPY(d, context->state, LDNS_SHA384_DIGEST_LENGTH); 967238104Sdes#endif 968238104Sdes } 969238104Sdes 970238104Sdes /* Zero out state data */ 971238104Sdes MEMSET_BZERO(context, sizeof(ldns_sha384_CTX)); 972238104Sdes} 973238104Sdes 974238104Sdesunsigned char * 975238104Sdesldns_sha384(unsigned char *data, unsigned int data_len, unsigned char *digest) 976238104Sdes{ 977238104Sdes ldns_sha384_CTX ctx; 978238104Sdes ldns_sha384_init(&ctx); 979238104Sdes ldns_sha384_update(&ctx, data, data_len); 980238104Sdes ldns_sha384_final(digest, &ctx); 981238104Sdes return digest; 982238104Sdes} 983