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Diffstat (limited to 'Build/source/texk/web2c/luatexdir/luapplib/src/util/utilsha.c')
-rw-r--r-- | Build/source/texk/web2c/luatexdir/luapplib/src/util/utilsha.c | 1065 |
1 files changed, 0 insertions, 1065 deletions
diff --git a/Build/source/texk/web2c/luatexdir/luapplib/src/util/utilsha.c b/Build/source/texk/web2c/luatexdir/luapplib/src/util/utilsha.c deleted file mode 100644 index 596bf76f72b..00000000000 --- a/Build/source/texk/web2c/luatexdir/luapplib/src/util/utilsha.c +++ /dev/null @@ -1,1065 +0,0 @@ -/* sha2 implementation excerpted from code by Aaron D. Gifford */ - -/* - * AUTHOR: Aaron D. Gifford - http://www.aarongifford.com/ - * - * Copyright (c) 2000-2001, Aaron D. Gifford - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the copyright holder nor the names of contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTOR(S) ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTOR(S) BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - * $Id: sha2.c,v 1.1 2001/11/08 00:01:51 adg Exp adg $ - */ - -#include <stdio.h> /* FILE */ -#include <string.h> /* memcpy()/memset() or bcopy()/bzero() */ -//#include <assert.h> /* assert() */ -#include "utilsha.h" - -/* - * UNROLLED TRANSFORM LOOP NOTE: - * You can define SHA2_UNROLL_TRANSFORM to use the unrolled transform - * loop version for the hash transform rounds (defined using macros - * later in this file). Either define on the command line, for example: - * - * cc -DSHA2_UNROLL_TRANSFORM -o sha2 sha2.c sha2prog.c - * - * or define below: - * - * #define SHA2_UNROLL_TRANSFORM - * - */ - -/*** SHA-256/384/512 Machine Architecture Definitions *****************/ -/* - * BYTE_ORDER NOTE: - * - * Please make sure that your system defines BYTE_ORDER. If your - * architecture is little-endian, make sure it also defines - * LITTLE_ENDIAN and that the two (BYTE_ORDER and LITTLE_ENDIAN) are - * equivilent. - * - * If your system does not define the above, then you can do so by - * hand like this: - * - * #define LITTLE_ENDIAN 1234 - * #define BIG_ENDIAN 4321 - * - * And for little-endian machines, add: - * - * #define BYTE_ORDER LITTLE_ENDIAN - * - * Or for big-endian machines: - * - * #define BYTE_ORDER BIG_ENDIAN - * - * The FreeBSD machine this was written on defines BYTE_ORDER - * appropriately by including <sys/types.h> (which in turn includes - * <machine/endian.h> where the appropriate definitions are actually - * made). - */ - -#ifndef BYTE_ORDER -#define BYTE_ORDER LITTLE_ENDIAN -#endif - -//#if !defined(BYTE_ORDER) || (BYTE_ORDER != LITTLE_ENDIAN && BYTE_ORDER != BIG_ENDIAN) -//#error Define BYTE_ORDER to be equal to either LITTLE_ENDIAN or BIG_ENDIAN -//#endif - -/* - * Define the following sha2_* types to types of the correct length on - * the native archtecture. Most BSD systems and Linux define u_intXX_t - * types. Machines with very recent ANSI C headers, can use the - * uintXX_t definintions from inttypes.h by defining SHA2_USE_INTTYPES_H - * during compile or in the sha.h header file. - * - * Machines that support neither u_intXX_t nor inttypes.h's uintXX_t - * will need to define these three typedefs below (and the appropriate - * ones in sha.h too) by hand according to their system architecture. - * - * Thank you, Jun-ichiro itojun Hagino, for suggesting using u_intXX_t - * types and pointing out recent ANSI C support for uintXX_t in inttypes.h. - * - * PJ: replace by uintX_t - */ - -//typedef uint8_t sha2_byte; /* Exactly 1 byte */ -//typedef uint32_t sha2_word32; /* Exactly 4 bytes */ -//typedef uint64_t sha2_word64; /* Exactly 8 bytes */ - -/*** SHA-256/384/512 Various Length Definitions ***********************/ -/* NOTE: Most of these are in header */ -#define SHA256_SHORT_BLOCK_LENGTH (SHA256_BLOCK_LENGTH - 8) -#define SHA384_SHORT_BLOCK_LENGTH (SHA384_BLOCK_LENGTH - 16) -#define SHA512_SHORT_BLOCK_LENGTH (SHA512_BLOCK_LENGTH - 16) - - -/*** ENDIAN REVERSAL MACROS *******************************************/ -#if BYTE_ORDER == LITTLE_ENDIAN -#define REVERSE32(w, x) { \ - uint32_t tmp = (w); \ - tmp = (tmp >> 16) | (tmp << 16); \ - (x) = ((tmp & 0xff00ff00UL) >> 8) | ((tmp & 0x00ff00ffUL) << 8); \ -} -#define REVERSE64(w, x) { \ - uint64_t tmp = (w); \ - tmp = (tmp >> 32) | (tmp << 32); \ - tmp = ((tmp & 0xff00ff00ff00ff00ULL) >> 8) | \ - ((tmp & 0x00ff00ff00ff00ffULL) << 8); \ - (x) = ((tmp & 0xffff0000ffff0000ULL) >> 16) | \ - ((tmp & 0x0000ffff0000ffffULL) << 16); \ -} -#endif /* BYTE_ORDER == LITTLE_ENDIAN */ - -/* - * Macro for incrementally adding the unsigned 64-bit integer n to the - * unsigned 128-bit integer (represented using a two-element array of - * 64-bit words): - */ -#define ADDINC128(w,n) { \ - (w)[0] += (uint64_t)(n); \ - if ((w)[0] < (n)) { \ - (w)[1]++; \ - } \ -} - -#define MEMSET_BZERO(p,l) memset((p), 0, (l)) -#define MEMCPY_BCOPY(d,s,l) memcpy((d), (s), (l)) - -/*** THE SIX LOGICAL FUNCTIONS ****************************************/ -/* - * Bit shifting and rotation (used by the six SHA-XYZ logical functions: - * - * NOTE: The naming of R and S appears backwards here (R is a SHIFT and - * S is a ROTATION) because the SHA-256/384/512 description document - * (see http://csrc.nist.gov/cryptval/shs/sha256-384-512.pdf) uses this - * same "backwards" definition. - */ -/* Shift-right (used in SHA-256, SHA-384, and SHA-512): */ -#define R(b,x) ((x) >> (b)) -/* 32-bit Rotate-right (used in SHA-256): */ -#define S32(b,x) (((x) >> (b)) | ((x) << (32 - (b)))) -/* 64-bit Rotate-right (used in SHA-384 and SHA-512): */ -#define S64(b,x) (((x) >> (b)) | ((x) << (64 - (b)))) - -/* Two of six logical functions used in SHA-256, SHA-384, and SHA-512: */ -#define Ch(x,y,z) (((x) & (y)) ^ ((~(x)) & (z))) -#define Maj(x,y,z) (((x) & (y)) ^ ((x) & (z)) ^ ((y) & (z))) - -/* Four of six logical functions used in SHA-256: */ -#define Sigma0_256(x) (S32(2, (x)) ^ S32(13, (x)) ^ S32(22, (x))) -#define Sigma1_256(x) (S32(6, (x)) ^ S32(11, (x)) ^ S32(25, (x))) -#define sigma0_256(x) (S32(7, (x)) ^ S32(18, (x)) ^ R(3 , (x))) -#define sigma1_256(x) (S32(17, (x)) ^ S32(19, (x)) ^ R(10, (x))) - -/* Four of six logical functions used in SHA-384 and SHA-512: */ -#define Sigma0_512(x) (S64(28, (x)) ^ S64(34, (x)) ^ S64(39, (x))) -#define Sigma1_512(x) (S64(14, (x)) ^ S64(18, (x)) ^ S64(41, (x))) -#define sigma0_512(x) (S64( 1, (x)) ^ S64( 8, (x)) ^ R( 7, (x))) -#define sigma1_512(x) (S64(19, (x)) ^ S64(61, (x)) ^ R( 6, (x))) - -static void sha512_last (sha512_state *state); -static void sha256_transform (sha256_state *state, const uint32_t idata[16]); -static void sha512_transform (sha512_state *state, const uint64_t idata[16]); - -/*** SHA-XYZ INITIAL HASH VALUES AND CONSTANTS ************************/ -/* Hash constant words K for SHA-256: */ -static const uint32_t K256[64] = { - 0x428a2f98UL, 0x71374491UL, 0xb5c0fbcfUL, 0xe9b5dba5UL, - 0x3956c25bUL, 0x59f111f1UL, 0x923f82a4UL, 0xab1c5ed5UL, - 0xd807aa98UL, 0x12835b01UL, 0x243185beUL, 0x550c7dc3UL, - 0x72be5d74UL, 0x80deb1feUL, 0x9bdc06a7UL, 0xc19bf174UL, - 0xe49b69c1UL, 0xefbe4786UL, 0x0fc19dc6UL, 0x240ca1ccUL, - 0x2de92c6fUL, 0x4a7484aaUL, 0x5cb0a9dcUL, 0x76f988daUL, - 0x983e5152UL, 0xa831c66dUL, 0xb00327c8UL, 0xbf597fc7UL, - 0xc6e00bf3UL, 0xd5a79147UL, 0x06ca6351UL, 0x14292967UL, - 0x27b70a85UL, 0x2e1b2138UL, 0x4d2c6dfcUL, 0x53380d13UL, - 0x650a7354UL, 0x766a0abbUL, 0x81c2c92eUL, 0x92722c85UL, - 0xa2bfe8a1UL, 0xa81a664bUL, 0xc24b8b70UL, 0xc76c51a3UL, - 0xd192e819UL, 0xd6990624UL, 0xf40e3585UL, 0x106aa070UL, - 0x19a4c116UL, 0x1e376c08UL, 0x2748774cUL, 0x34b0bcb5UL, - 0x391c0cb3UL, 0x4ed8aa4aUL, 0x5b9cca4fUL, 0x682e6ff3UL, - 0x748f82eeUL, 0x78a5636fUL, 0x84c87814UL, 0x8cc70208UL, - 0x90befffaUL, 0xa4506cebUL, 0xbef9a3f7UL, 0xc67178f2UL -}; - -/* Initial hash value H for SHA-256: */ -static const uint32_t sha256_initial_hash_value[8] = { - 0x6a09e667UL, - 0xbb67ae85UL, - 0x3c6ef372UL, - 0xa54ff53aUL, - 0x510e527fUL, - 0x9b05688cUL, - 0x1f83d9abUL, - 0x5be0cd19UL -}; - -/* Hash constant words K for SHA-384 and SHA-512: */ -static const uint64_t K512[80] = { - 0x428a2f98d728ae22ULL, 0x7137449123ef65cdULL, - 0xb5c0fbcfec4d3b2fULL, 0xe9b5dba58189dbbcULL, - 0x3956c25bf348b538ULL, 0x59f111f1b605d019ULL, - 0x923f82a4af194f9bULL, 0xab1c5ed5da6d8118ULL, - 0xd807aa98a3030242ULL, 0x12835b0145706fbeULL, - 0x243185be4ee4b28cULL, 0x550c7dc3d5ffb4e2ULL, - 0x72be5d74f27b896fULL, 0x80deb1fe3b1696b1ULL, - 0x9bdc06a725c71235ULL, 0xc19bf174cf692694ULL, - 0xe49b69c19ef14ad2ULL, 0xefbe4786384f25e3ULL, - 0x0fc19dc68b8cd5b5ULL, 0x240ca1cc77ac9c65ULL, - 0x2de92c6f592b0275ULL, 0x4a7484aa6ea6e483ULL, - 0x5cb0a9dcbd41fbd4ULL, 0x76f988da831153b5ULL, - 0x983e5152ee66dfabULL, 0xa831c66d2db43210ULL, - 0xb00327c898fb213fULL, 0xbf597fc7beef0ee4ULL, - 0xc6e00bf33da88fc2ULL, 0xd5a79147930aa725ULL, - 0x06ca6351e003826fULL, 0x142929670a0e6e70ULL, - 0x27b70a8546d22ffcULL, 0x2e1b21385c26c926ULL, - 0x4d2c6dfc5ac42aedULL, 0x53380d139d95b3dfULL, - 0x650a73548baf63deULL, 0x766a0abb3c77b2a8ULL, - 0x81c2c92e47edaee6ULL, 0x92722c851482353bULL, - 0xa2bfe8a14cf10364ULL, 0xa81a664bbc423001ULL, - 0xc24b8b70d0f89791ULL, 0xc76c51a30654be30ULL, - 0xd192e819d6ef5218ULL, 0xd69906245565a910ULL, - 0xf40e35855771202aULL, 0x106aa07032bbd1b8ULL, - 0x19a4c116b8d2d0c8ULL, 0x1e376c085141ab53ULL, - 0x2748774cdf8eeb99ULL, 0x34b0bcb5e19b48a8ULL, - 0x391c0cb3c5c95a63ULL, 0x4ed8aa4ae3418acbULL, - 0x5b9cca4f7763e373ULL, 0x682e6ff3d6b2b8a3ULL, - 0x748f82ee5defb2fcULL, 0x78a5636f43172f60ULL, - 0x84c87814a1f0ab72ULL, 0x8cc702081a6439ecULL, - 0x90befffa23631e28ULL, 0xa4506cebde82bde9ULL, - 0xbef9a3f7b2c67915ULL, 0xc67178f2e372532bULL, - 0xca273eceea26619cULL, 0xd186b8c721c0c207ULL, - 0xeada7dd6cde0eb1eULL, 0xf57d4f7fee6ed178ULL, - 0x06f067aa72176fbaULL, 0x0a637dc5a2c898a6ULL, - 0x113f9804bef90daeULL, 0x1b710b35131c471bULL, - 0x28db77f523047d84ULL, 0x32caab7b40c72493ULL, - 0x3c9ebe0a15c9bebcULL, 0x431d67c49c100d4cULL, - 0x4cc5d4becb3e42b6ULL, 0x597f299cfc657e2aULL, - 0x5fcb6fab3ad6faecULL, 0x6c44198c4a475817ULL -}; - -/* Initial hash value H for SHA-384 */ -static const uint64_t sha384_initial_hash_value[8] = { - 0xcbbb9d5dc1059ed8ULL, - 0x629a292a367cd507ULL, - 0x9159015a3070dd17ULL, - 0x152fecd8f70e5939ULL, - 0x67332667ffc00b31ULL, - 0x8eb44a8768581511ULL, - 0xdb0c2e0d64f98fa7ULL, - 0x47b5481dbefa4fa4ULL -}; - -/* Initial hash value H for SHA-512 */ -static const uint64_t sha512_initial_hash_value[8] = { - 0x6a09e667f3bcc908ULL, - 0xbb67ae8584caa73bULL, - 0x3c6ef372fe94f82bULL, - 0xa54ff53a5f1d36f1ULL, - 0x510e527fade682d1ULL, - 0x9b05688c2b3e6c1fULL, - 0x1f83d9abfb41bd6bULL, - 0x5be0cd19137e2179ULL -}; - -/*** SHA-256: *********************************************************/ -sha256_state * sha256_digest_init (sha256_state *state) -{ - MEMCPY_BCOPY(state->words, sha256_initial_hash_value, SHA256_DIGEST_LENGTH); - MEMSET_BZERO(state->buffer, SHA256_BLOCK_LENGTH); - state->bitcount = 0; - return state; -} - -#ifdef SHA2_UNROLL_TRANSFORM - -/* Unrolled SHA-256 round macros: */ - -#if BYTE_ORDER == LITTLE_ENDIAN - -#define ROUND256_0_TO_15(v, a, b, c, d, e, f, g, h) \ - REVERSE32(v, W256[j]); \ - T1 = (h) + Sigma1_256(e) + Ch((e), (f), (g)) + K256[j] + W256[j]; \ - (d) += T1; \ - (h) = T1 + Sigma0_256(a) + Maj((a), (b), (c)) - -#else /* BYTE_ORDER == LITTLE_ENDIAN */ - -#define ROUND256_0_TO_15(v, a, b, c, d, e, f, g, h) \ - T1 = (h) + Sigma1_256(e) + Ch((e), (f), (g)) + K256[j] + (W256[j] = v); \ - (d) += T1; \ - (h) = T1 + Sigma0_256(a) + Maj((a), (b), (c)) - -#endif /* BYTE_ORDER == LITTLE_ENDIAN */ - -#define ROUND256(a, b, c, d, e, f, g, h) \ - s0 = W256[(j+1)&0x0f]; \ - s0 = sigma0_256(s0); \ - s1 = W256[(j+14)&0x0f]; \ - s1 = sigma1_256(s1); \ - T1 = (h) + Sigma1_256(e) + Ch((e), (f), (g)) + K256[j] + (W256[j&0x0f] += s1 + W256[(j+9)&0x0f] + s0); \ - (d) += T1; \ - (h) = T1 + Sigma0_256(a) + Maj((a), (b), (c)) - -static void sha256_transform (sha256_state *state, const uint32_t idata[16]) { - uint32_t a, b, c, d, e, f, g, h, s0, s1; - uint32_t T1, *W256, v; - int j; - - W256 = state->buffer32; - - /* Initialize registers with the prev. intermediate value */ - a = state->words[0]; - b = state->words[1]; - c = state->words[2]; - d = state->words[3]; - e = state->words[4]; - f = state->words[5]; - g = state->words[6]; - h = state->words[7]; - - j = 0; - do { - /* Rounds 0 to 15 (unrolled): */ - v = idata[j]; ROUND256_0_TO_15(v, a, b, c, d, e, f, g, h); ++j; - v = idata[j]; ROUND256_0_TO_15(v, h, a, b, c, d, e, f, g); ++j; - v = idata[j]; ROUND256_0_TO_15(v, g, h, a, b, c, d, e, f); ++j; - v = idata[j]; ROUND256_0_TO_15(v, f, g, h, a, b, c, d, e); ++j; - v = idata[j]; ROUND256_0_TO_15(v, e, f, g, h, a, b, c, d); ++j; - v = idata[j]; ROUND256_0_TO_15(v, d, e, f, g, h, a, b, c); ++j; - v = idata[j]; ROUND256_0_TO_15(v, c, d, e, f, g, h, a, b); ++j; - v = idata[j]; ROUND256_0_TO_15(v, b, c, d, e, f, g, h, a); ++j; - } while (j < 16); - - /* Now for the remaining rounds to 64: */ - do { - ROUND256(a, b, c, d, e, f, g, h); ++j; - ROUND256(h, a, b, c, d, e, f, g); ++j; - ROUND256(g, h, a, b, c, d, e, f); ++j; - ROUND256(f, g, h, a, b, c, d, e); ++j; - ROUND256(e, f, g, h, a, b, c, d); ++j; - ROUND256(d, e, f, g, h, a, b, c); ++j; - ROUND256(c, d, e, f, g, h, a, b); ++j; - ROUND256(b, c, d, e, f, g, h, a); ++j; - } while (j < 64); - - /* Compute the current intermediate hash value */ - state->words[0] += a; - state->words[1] += b; - state->words[2] += c; - state->words[3] += d; - state->words[4] += e; - state->words[5] += f; - state->words[6] += g; - state->words[7] += h; -} - -#else /* SHA2_UNROLL_TRANSFORM */ - -static void sha256_transform (sha256_state *state, const uint32_t idata[16]) { - uint32_t a, b, c, d, e, f, g, h, s0, s1; - uint32_t T1, T2, *W256, v; - int j; - - W256 = state->buffer32; - - /* Initialize registers with the prev. intermediate value */ - a = state->words[0]; - b = state->words[1]; - c = state->words[2]; - d = state->words[3]; - e = state->words[4]; - f = state->words[5]; - g = state->words[6]; - h = state->words[7]; - - j = 0; - do { - v = idata[j]; -#if BYTE_ORDER == LITTLE_ENDIAN - /* Copy data while converting to host byte order */ - REVERSE32(v, W256[j]); - /* Apply the SHA-256 compression function to update a..h */ - T1 = h + Sigma1_256(e) + Ch(e, f, g) + K256[j] + W256[j]; -#else /* BYTE_ORDER == LITTLE_ENDIAN */ - /* Apply the SHA-256 compression function to update a..h with copy */ - T1 = h + Sigma1_256(e) + Ch(e, f, g) + K256[j] + (W256[j] = v); -#endif /* BYTE_ORDER == LITTLE_ENDIAN */ - T2 = Sigma0_256(a) + Maj(a, b, c); - h = g; - g = f; - f = e; - e = d + T1; - d = c; - c = b; - b = a; - a = T1 + T2; - - j++; - } while (j < 16); - - do { - /* Part of the message block expansion: */ - s0 = W256[(j+1)&0x0f]; - s0 = sigma0_256(s0); - s1 = W256[(j+14)&0x0f]; - s1 = sigma1_256(s1); - - /* Apply the SHA-256 compression function to update a..h */ - T1 = h + Sigma1_256(e) + Ch(e, f, g) + K256[j] + (W256[j&0x0f] += s1 + W256[(j+9)&0x0f] + s0); - T2 = Sigma0_256(a) + Maj(a, b, c); - h = g; - g = f; - f = e; - e = d + T1; - d = c; - c = b; - b = a; - a = T1 + T2; - - j++; - } while (j < 64); - - /* Compute the current intermediate hash value */ - state->words[0] += a; - state->words[1] += b; - state->words[2] += c; - state->words[3] += d; - state->words[4] += e; - state->words[5] += f; - state->words[6] += g; - state->words[7] += h; -} - -#endif /* SHA2_UNROLL_TRANSFORM */ - -/* PJ: alignment-safe version */ - -#define data_aligned4(data) (((data - (const uint8_t *)(0UL)) & 3) == 0) -#define data_aligned8(data) (((data - (const uint8_t *)(0ULL)) & 7) == 0) - -static void sha256_transform_aligned (sha256_state *state, const uint8_t *data) { - if (data_aligned4(data)) - { - sha256_transform(state, (const uint32_t *)((const void *)data)); // alignment ok - } - else - { - uint32_t idata[16]; - memcpy(&idata[0], data, 16 * sizeof(uint32_t)); - sha256_transform(state, idata); - } -} - -void sha256_digest_add (sha256_state *state, const void *vdata, size_t len) -{ - unsigned int freespace, usedspace; - const uint8_t *data; - - if (len == 0) /* Calling with no data is valid - we do nothing */ - return; - - data = (const uint8_t *)vdata; - - usedspace = (state->bitcount >> 3) % SHA256_BLOCK_LENGTH; - if (usedspace > 0) - { - /* Calculate how much free space is available in the buffer */ - freespace = SHA256_BLOCK_LENGTH - usedspace; - - if (len >= freespace) - { - /* Fill the buffer completely and process it */ - MEMCPY_BCOPY(&state->buffer[usedspace], data, freespace); - state->bitcount += freespace << 3; - len -= freespace; - data += freespace; - sha256_transform(state, state->buffer32); - } - else - { - /* The buffer is not yet full */ - MEMCPY_BCOPY(&state->buffer[usedspace], data, len); - state->bitcount += len << 3; - return; - } - } - while (len >= SHA256_BLOCK_LENGTH) - { - /* Process as many complete blocks as we can */ - sha256_transform_aligned(state, data); - - state->bitcount += SHA256_BLOCK_LENGTH << 3; - len -= SHA256_BLOCK_LENGTH; - data += SHA256_BLOCK_LENGTH; - } - if (len > 0) - { - /* There's left-overs, so save 'em */ - MEMCPY_BCOPY(state->buffer, data, len); - state->bitcount += len << 3; - } -} - -static void digest_hex (uint8_t digest[], const void *data, size_t size, int flags); - -void sha256_digest_get (sha256_state *state, uint8_t digest[], int flags) { - unsigned int usedspace; - - usedspace = (state->bitcount >> 3) % SHA256_BLOCK_LENGTH; -#if BYTE_ORDER == LITTLE_ENDIAN - /* Convert FROM host byte order */ - REVERSE64(state->bitcount,state->bitcount); -#endif - if (usedspace > 0) - { - /* Begin padding with a 1 bit: */ - state->buffer[usedspace++] = 0x80; - - if (usedspace <= SHA256_SHORT_BLOCK_LENGTH) { - /* Set-up for the last transform: */ - MEMSET_BZERO(&state->buffer[usedspace], SHA256_SHORT_BLOCK_LENGTH - usedspace); - } else { - if (usedspace < SHA256_BLOCK_LENGTH) { - MEMSET_BZERO(&state->buffer[usedspace], SHA256_BLOCK_LENGTH - usedspace); - } - /* Do second-to-last transform: */ - sha256_transform(state, state->buffer32); - - /* And set-up for the last transform: */ - MEMSET_BZERO(state->buffer, SHA256_SHORT_BLOCK_LENGTH); - } - } - else - { - /* Set-up for the last transform: */ - MEMSET_BZERO(state->buffer, SHA256_SHORT_BLOCK_LENGTH); - - /* Begin padding with a 1 bit: */ - *state->buffer = 0x80; - } - /* Set the bit count: */ - //*(uint64_t*)&state->buffer[SHA256_SHORT_BLOCK_LENGTH] = state->bitcount; // aliasing violation warning - state->buffer64[SHA256_SHORT_BLOCK_LENGTH / sizeof(uint64_t)] = state->bitcount; - - /* Final transform: */ - sha256_transform(state, state->buffer32); - -#if BYTE_ORDER == LITTLE_ENDIAN - { - /* Convert TO host byte order */ - int j; - for (j = 0; j < 8; j++) - { - REVERSE32(state->words[j], state->words[j]); - } - } -#endif - if (flags & SHA_HEX) - digest_hex(digest, state->words, SHA256_DIGEST_LENGTH, flags); - else - memcpy(digest, state->words, SHA256_DIGEST_LENGTH); -} - -/*** SHA-512: *********************************************************/ -sha512_state * sha512_digest_init (sha512_state *state) -{ - MEMCPY_BCOPY(state->words, sha512_initial_hash_value, SHA512_DIGEST_LENGTH); - MEMSET_BZERO(state->buffer, SHA512_BLOCK_LENGTH); - state->bitcount[0] = 0; - state->bitcount[1] = 0; - return state; -} - -#ifdef SHA2_UNROLL_TRANSFORM - -/* PJ: ++ operations moved out of macros! */ - -/* Unrolled SHA-512 round macros: */ -#if BYTE_ORDER == LITTLE_ENDIAN - -#define ROUND512_0_TO_15(v, a, b, c, d, e, f, g, h) \ - REVERSE64(v, W512[j]); \ - T1 = (h) + Sigma1_512(e) + Ch((e), (f), (g)) + K512[j] + W512[j]; \ - (d) += T1; \ - (h) = T1 + Sigma0_512(a) + Maj((a), (b), (c)) - -#else /* BYTE_ORDER == LITTLE_ENDIAN */ - -#define ROUND512_0_TO_15(v, a, b, c, d, e, f, g, h) \ - T1 = (h) + Sigma1_512(e) + Ch((e), (f), (g)) + K512[j] + (W512[j] = v); \ - (d) += T1; \ - (h) = T1 + Sigma0_512(a) + Maj((a), (b), (c)) - -#endif /* BYTE_ORDER == LITTLE_ENDIAN */ - -#define ROUND512(a, b, c, d, e, f, g, h) \ - s0 = W512[(j+1)&0x0f]; \ - s0 = sigma0_512(s0); \ - s1 = W512[(j+14)&0x0f]; \ - s1 = sigma1_512(s1); \ - T1 = (h) + Sigma1_512(e) + Ch((e), (f), (g)) + K512[j] + (W512[j&0x0f] += s1 + W512[(j+9)&0x0f] + s0); \ - (d) += T1; \ - (h) = T1 + Sigma0_512(a) + Maj((a), (b), (c)) - -static void sha512_transform (sha512_state *state, const uint64_t idata[16]) -{ - uint64_t a, b, c, d, e, f, g, h, s0, s1; - uint64_t T1, *W512, v; - int j; - - W512 = state->buffer64; - - /* Initialize registers with the prev. intermediate value */ - a = state->words[0]; - b = state->words[1]; - c = state->words[2]; - d = state->words[3]; - e = state->words[4]; - f = state->words[5]; - g = state->words[6]; - h = state->words[7]; - - j = 0; - do { - v = idata[j]; ROUND512_0_TO_15(v, a, b, c, d, e, f, g, h); ++j; - v = idata[j]; ROUND512_0_TO_15(v, h, a, b, c, d, e, f, g); ++j; - v = idata[j]; ROUND512_0_TO_15(v, g, h, a, b, c, d, e, f); ++j; - v = idata[j]; ROUND512_0_TO_15(v, f, g, h, a, b, c, d, e); ++j; - v = idata[j]; ROUND512_0_TO_15(v, e, f, g, h, a, b, c, d); ++j; - v = idata[j]; ROUND512_0_TO_15(v, d, e, f, g, h, a, b, c); ++j; - v = idata[j]; ROUND512_0_TO_15(v, c, d, e, f, g, h, a, b); ++j; - v = idata[j]; ROUND512_0_TO_15(v, b, c, d, e, f, g, h, a); ++j; - } while (j < 16); - - /* Now for the remaining rounds up to 79: */ - do { - ROUND512(a, b, c, d, e, f, g, h); ++j; - ROUND512(h, a, b, c, d, e, f, g); ++j; - ROUND512(g, h, a, b, c, d, e, f); ++j; - ROUND512(f, g, h, a, b, c, d, e); ++j; - ROUND512(e, f, g, h, a, b, c, d); ++j; - ROUND512(d, e, f, g, h, a, b, c); ++j; - ROUND512(c, d, e, f, g, h, a, b); ++j; - ROUND512(b, c, d, e, f, g, h, a); ++j; - } while (j < 80); - - /* Compute the current intermediate hash value */ - state->words[0] += a; - state->words[1] += b; - state->words[2] += c; - state->words[3] += d; - state->words[4] += e; - state->words[5] += f; - state->words[6] += g; - state->words[7] += h; -} - -#else /* SHA2_UNROLL_TRANSFORM */ - -static void sha512_transform (sha512_state *state, const uint64_t idata[16]) -{ - uint64_t a, b, c, d, e, f, g, h, s0, s1; - uint64_t T1, T2, *W512, v; - int j; - - W512 = state->buffer64; - - /* Initialize registers with the prev. intermediate value */ - a = state->words[0]; - b = state->words[1]; - c = state->words[2]; - d = state->words[3]; - e = state->words[4]; - f = state->words[5]; - g = state->words[6]; - h = state->words[7]; - - j = 0; - do { - v = idata[j]; -#if BYTE_ORDER == LITTLE_ENDIAN - /* Convert TO host byte order */ - REVERSE64(v, W512[j]); - /* Apply the SHA-512 compression function to update a..h */ - T1 = h + Sigma1_512(e) + Ch(e, f, g) + K512[j] + W512[j]; -#else /* BYTE_ORDER == LITTLE_ENDIAN */ - /* Apply the SHA-512 compression function to update a..h with copy */ - T1 = h + Sigma1_512(e) + Ch(e, f, g) + K512[j] + (W512[j] = v); -#endif /* BYTE_ORDER == LITTLE_ENDIAN */ - T2 = Sigma0_512(a) + Maj(a, b, c); - h = g; - g = f; - f = e; - e = d + T1; - d = c; - c = b; - b = a; - a = T1 + T2; - - j++; - } while (j < 16); - - do { - /* Part of the message block expansion: */ - s0 = W512[(j+1)&0x0f]; - s0 = sigma0_512(s0); - s1 = W512[(j+14)&0x0f]; - s1 = sigma1_512(s1); - - /* Apply the SHA-512 compression function to update a..h */ - T1 = h + Sigma1_512(e) + Ch(e, f, g) + K512[j] + (W512[j&0x0f] += s1 + W512[(j+9)&0x0f] + s0); - T2 = Sigma0_512(a) + Maj(a, b, c); - h = g; - g = f; - f = e; - e = d + T1; - d = c; - c = b; - b = a; - a = T1 + T2; - - j++; - } while (j < 80); - - /* Compute the current intermediate hash value */ - state->words[0] += a; - state->words[1] += b; - state->words[2] += c; - state->words[3] += d; - state->words[4] += e; - state->words[5] += f; - state->words[6] += g; - state->words[7] += h; -} - -#endif /* SHA2_UNROLL_TRANSFORM */ - -static void sha512_transform_aligned (sha512_state *state, const uint8_t *data) -{ - if (data_aligned8(data)) - { - sha512_transform(state, (const uint64_t *)((const void *)data)); // alignment ok - } - else - { - uint64_t idata[16]; - memcpy(&idata[0], data, 16 * sizeof(uint64_t)); - sha512_transform(state, idata); - } -} - -void sha512_digest_add (sha512_state *state, const void *vdata, size_t len) -{ - unsigned int freespace, usedspace; - const uint8_t *data; - - if (len == 0) /* Calling with no data is valid - we do nothing */ - return; - - /* Sanity check: */ - data = (const uint8_t *)vdata; - - usedspace = (state->bitcount[0] >> 3) % SHA512_BLOCK_LENGTH; - if (usedspace > 0) - { - /* Calculate how much free space is available in the buffer */ - freespace = SHA512_BLOCK_LENGTH - usedspace; - - if (len >= freespace) - { - /* Fill the buffer completely and process it */ - MEMCPY_BCOPY(&state->buffer[usedspace], data, freespace); - ADDINC128(state->bitcount, freespace << 3); - len -= freespace; - data += freespace; - sha512_transform(state, state->buffer64); - } - else - { - /* The buffer is not yet full */ - MEMCPY_BCOPY(&state->buffer[usedspace], data, len); - ADDINC128(state->bitcount, len << 3); - return; - } - } - while (len >= SHA512_BLOCK_LENGTH) - { - /* Process as many complete blocks as we can */ - sha512_transform_aligned(state, data); - - ADDINC128(state->bitcount, SHA512_BLOCK_LENGTH << 3); - len -= SHA512_BLOCK_LENGTH; - data += SHA512_BLOCK_LENGTH; - } - if (len > 0) - { - /* There's left-overs, so save 'em */ - MEMCPY_BCOPY(state->buffer, data, len); - ADDINC128(state->bitcount, len << 3); - } -} - -static void sha512_last (sha512_state *state) -{ - unsigned int usedspace; - - usedspace = (state->bitcount[0] >> 3) % SHA512_BLOCK_LENGTH; -#if BYTE_ORDER == LITTLE_ENDIAN - /* Convert FROM host byte order */ - REVERSE64(state->bitcount[0],state->bitcount[0]); - REVERSE64(state->bitcount[1],state->bitcount[1]); -#endif - if (usedspace > 0) - { - /* Begin padding with a 1 bit: */ - state->buffer[usedspace++] = 0x80; - - if (usedspace <= SHA512_SHORT_BLOCK_LENGTH) { - /* Set-up for the last transform: */ - MEMSET_BZERO(&state->buffer[usedspace], SHA512_SHORT_BLOCK_LENGTH - usedspace); - } else { - if (usedspace < SHA512_BLOCK_LENGTH) { - MEMSET_BZERO(&state->buffer[usedspace], SHA512_BLOCK_LENGTH - usedspace); - } - /* Do second-to-last transform: */ - sha512_transform(state, state->buffer64); - - /* And set-up for the last transform: */ - //MEMSET_BZERO(state->buffer, SHA512_BLOCK_LENGTH - 2); // seems a typo, we overwrite last 16 bytes below - MEMSET_BZERO(state->buffer, SHA512_SHORT_BLOCK_LENGTH); - } - } - else - { - /* Prepare for final transform: */ - MEMSET_BZERO(state->buffer, SHA512_SHORT_BLOCK_LENGTH); - - /* Begin padding with a 1 bit: */ - *state->buffer = 0x80; - } - /* Store the length of input data (in bits): */ - //*(uint64_t*)&state->buffer[SHA512_SHORT_BLOCK_LENGTH] = state->bitcount[1]; // aliasing violation warning - //*(uint64_t*)&state->buffer[SHA512_SHORT_BLOCK_LENGTH+8] = state->bitcount[0]; - state->buffer64[SHA512_SHORT_BLOCK_LENGTH / sizeof(uint64_t)] = state->bitcount[1]; - state->buffer64[SHA512_SHORT_BLOCK_LENGTH / sizeof(uint64_t) + 1] = state->bitcount[0]; - - /* Final transform: */ - sha512_transform(state, state->buffer64); -} - -void sha512_digest_get (sha512_state *state, uint8_t digest[], int flags) -{ - /* If no digest buffer is passed, we don't bother doing this: */ - sha512_last(state); - - /* Save the hash data for output: */ -#if BYTE_ORDER == LITTLE_ENDIAN - { - /* Convert TO host byte order */ - int j; - for (j = 0; j < 8; j++) - { - REVERSE64(state->words[j], state->words[j]); - } - } -#endif - if (flags & SHA_HEX) - digest_hex(digest, state->words, SHA512_DIGEST_LENGTH, flags); - else - memcpy(digest, state->words, SHA512_DIGEST_LENGTH); -} - -/*** SHA-384: *********************************************************/ -sha384_state * sha384_digest_init (sha384_state *state) -{ - MEMCPY_BCOPY(state->words, sha384_initial_hash_value, SHA512_DIGEST_LENGTH); - MEMSET_BZERO(state->buffer, SHA384_BLOCK_LENGTH); - state->bitcount[0] = state->bitcount[1] = 0; - return state; -} - -void sha384_digest_add (sha384_state *state, const void *data, size_t len) -{ - sha512_digest_add((sha512_state *)state, data, len); -} - -void sha384_digest_get (sha384_state *state, uint8_t digest[], int flags) -{ - sha512_last((sha512_state *)state); - - /* Save the hash data for output: */ -#if BYTE_ORDER == LITTLE_ENDIAN - { - /* Convert TO host byte order */ - int j; - for (j = 0; j < 6; j++) - { - REVERSE64(state->words[j], state->words[j]); - } - } -#endif - if (flags & SHA_HEX) - digest_hex(digest, state->words, SHA384_DIGEST_LENGTH, flags); - else - memcpy(digest, state->words, SHA384_DIGEST_LENGTH); -} - -/* hex output */ - -static void digest_hex (uint8_t digest[], const void *data, size_t size, int flags) -{ - const char *alphabet; - const uint8_t *bytes; - size_t i; - - bytes = (const uint8_t *)data; - alphabet = (flags & SHA_LCHEX) ? "0123456789abcdef" : "0123456789ABCDEF"; - for (i = 0; i < size; ++i, ++bytes) - { - *digest++ = (uint8_t)alphabet[(*bytes) >> 4]; - *digest++ = (uint8_t)alphabet[(*bytes) & 15]; - } - *digest = 0; -} - -/* string checksum */ - -void sha256_digest (const void *data, size_t size, uint8_t digest[], int flags) -{ - sha256_state state; - sha256_digest_init(&state); - sha256_digest_add(&state, data, size); - sha256_digest_get(&state, digest, flags); -} - -void sha384_digest (const void *data, size_t size, uint8_t digest[], int flags) -{ - sha384_state state; - sha384_digest_init(&state); - sha384_digest_add(&state, data, size); - sha384_digest_get(&state, digest, flags); -} - -void sha512_digest (const void *data, size_t size, uint8_t digest[], int flags) -{ - sha512_state state; - sha512_digest_init(&state); - sha512_digest_add(&state, data, size); - sha512_digest_get(&state, digest, flags); -} - -/* file checksum */ - -#define DIGEST_BUFFER_SIZE 4096 - -int sha256_digest_add_file (sha256_state *state, const char *filename) -{ - FILE *fh; - uint8_t buffer[DIGEST_BUFFER_SIZE]; - size_t read; - - if ((fh = fopen(filename, "rb")) == NULL) - return 0; - do { - read = fread(buffer, 1, DIGEST_BUFFER_SIZE, fh); - sha256_digest_add(state, buffer, read); - } while (read == DIGEST_BUFFER_SIZE); - fclose(fh); - return 1; -} - -int sha256_digest_file (const char *filename, uint8_t digest[], int flags) -{ - sha256_state state; - - sha256_digest_init(&state); - if (sha256_digest_add_file(&state, filename)) - { - sha256_digest_get(&state, digest, flags); - return 1; - } - return 0; -} - -int sha384_digest_add_file (sha384_state *state, const char *filename) -{ - FILE *fh; - uint8_t buffer[DIGEST_BUFFER_SIZE]; - size_t read; - - if ((fh = fopen(filename, "rb")) == NULL) - return 0; - do { - read = fread(buffer, 1, DIGEST_BUFFER_SIZE, fh); - sha384_digest_add(state, buffer, read); - } while (read == DIGEST_BUFFER_SIZE); - fclose(fh); - return 1; -} - -int sha384_digest_file (const char *filename, uint8_t digest[], int flags) -{ - sha384_state state; - - sha384_digest_init(&state); - if (sha384_digest_add_file(&state, filename)) - { - sha384_digest_get(&state, digest, flags); - return 1; - } - return 0; -} - -int sha512_digest_add_file (sha512_state *state, const char *filename) -{ - FILE *fh; - uint8_t buffer[DIGEST_BUFFER_SIZE]; - size_t read; - - if ((fh = fopen(filename, "rb")) == NULL) - return 0; - do { - read = fread(buffer, 1, DIGEST_BUFFER_SIZE, fh); - sha512_digest_add(state, buffer, read); - } while (read == DIGEST_BUFFER_SIZE); - fclose(fh); - return 1; -} - -int sha512_digest_file (const char *filename, uint8_t digest[], int flags) -{ - sha512_state state; - - sha512_digest_init(&state); - if (sha512_digest_add_file(&state, filename)) - { - sha512_digest_get(&state, digest, flags); - return 1; - } - return 0; -} |