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-rw-r--r--ext/hash/hash_salsa.c224
1 files changed, 0 insertions, 224 deletions
diff --git a/ext/hash/hash_salsa.c b/ext/hash/hash_salsa.c
deleted file mode 100644
index 076f18438..000000000
--- a/ext/hash/hash_salsa.c
+++ /dev/null
@@ -1,224 +0,0 @@
-/*
- +----------------------------------------------------------------------+
- | PHP Version 5 |
- +----------------------------------------------------------------------+
- | Copyright (c) 1997-2012 The PHP Group |
- +----------------------------------------------------------------------+
- | This source file is subject to version 3.01 of the PHP license, |
- | that is bundled with this package in the file LICENSE, and is |
- | available through the world-wide-web at the following url: |
- | http://www.php.net/license/3_01.txt |
- | If you did not receive a copy of the PHP license and are unable to |
- | obtain it through the world-wide-web, please send a note to |
- | license@php.net so we can mail you a copy immediately. |
- +----------------------------------------------------------------------+
- | Authors: Michael Wallner <mike@php.net> |
- | Sara Golemon <pollita@php.net> |
- +----------------------------------------------------------------------+
-*/
-
-/* $Id: hash_salsa.c 321634 2012-01-01 13:15:04Z felipe $ */
-
-#include "php_hash.h"
-#include "php_hash_salsa.h"
-
-#define R(a,b) (((a) << (b)) | ((a) >> (32 - (b))))
-
-/* {{{ Salsa10
-
- The 64-byte input x to Salsa10 is viewed in little-endian form as 16 integers
- x0, x1, x2, ..., x15 in {0,1,...,2^32-1}. These 16 integers are fed through
- 320 invertible modifications, where each modification changes one integer.
- The modifications involve, overall,
-
- * 10 additions of constants modulo 2^32;
- * 320 more additions modulo 2^32;
- * 80 ``or'' operations;
- * 240 ``xor'' operations; and
- * 320 constant-distance rotations.
-
- The resulting 16 integers are added to the original x0, x1, x2, ..., x15
- respectively modulo 2^32, producing, in little-endian form, the 64-byte output
- Salsa10(x).
-
- D.J.Bernstein
-*/
-static void Salsa10(php_hash_uint32 x[16], php_hash_uint32 in[16])
-{
- int i;
-
- for (i = 10; i > 0; --i) {
- x[ 4] ^= R(x[ 0]+x[12], 6); x[ 8] ^= R(x[ 4]+x[ 0],17);
- x[12] += R(x[ 8]|x[ 4],16); x[ 0] += R(x[12]^x[ 8], 5);
- x[ 9] += R(x[ 5]|x[ 1], 8); x[13] += R(x[ 9]|x[ 5], 7);
- x[ 1] ^= R(x[13]+x[ 9],17); x[ 5] += R(x[ 1]^x[13],12);
- x[14] ^= R(x[10]+x[ 6], 7); x[ 2] += R(x[14]^x[10],15);
- x[ 6] ^= R(x[ 2]+x[14],13); x[10] ^= R(x[ 6]+x[ 2],15);
- x[ 3] += R(x[15]|x[11],20); x[ 7] ^= R(x[ 3]+x[15],16);
- x[11] += R(x[ 7]^x[ 3], 7); x[15] += R(x[11]^x[ 7], 8);
- x[ 1] += R(x[ 0]|x[ 3], 8)^i;x[ 2] ^= R(x[ 1]+x[ 0],14);
- x[ 3] ^= R(x[ 2]+x[ 1], 6); x[ 0] += R(x[ 3]^x[ 2],18);
- x[ 6] += R(x[ 5]^x[ 4], 8); x[ 7] += R(x[ 6]^x[ 5],12);
- x[ 4] += R(x[ 7]|x[ 6],13); x[ 5] ^= R(x[ 4]+x[ 7],15);
- x[11] ^= R(x[10]+x[ 9],18); x[ 8] += R(x[11]^x[10],11);
- x[ 9] ^= R(x[ 8]+x[11], 8); x[10] += R(x[ 9]|x[ 8], 6);
- x[12] += R(x[15]^x[14],17); x[13] ^= R(x[12]+x[15],15);
- x[14] += R(x[13]|x[12], 9); x[15] += R(x[14]^x[13], 7);
- }
- for (i = 0; i < 16; ++i) {
- x[i] += in[i];
- }
-}
-/* }}} */
-
-/* {{{ Salsa20
-
- The 64-byte input x to Salsa20 is viewed in little-endian form as 16 words
- x0, x1, x2, ..., x15 in {0,1,...,2^32-1}. These 16 words are fed through 320
- invertible modifications, where each modification changes one word. The
- resulting 16 words are added to the original x0, x1, x2, ..., x15 respectively
- modulo 2^32, producing, in little-endian form, the 64-byte output Salsa20(x).
-
- Each modification involves xor'ing into one word a rotated version of the sum
- of two other words modulo 2^32. Thus the 320 modifications involve, overall,
- 320 additions, 320 xor's, and 320 rotations. The rotations are all by constant
- distances.
-
- The entire series of modifications is a series of 10 identical double-rounds.
- Each double-round is a series of 2 rounds. Each round is a set of 4 parallel
- quarter-rounds. Each quarter-round modifies 4 words.
-
- D.J.Bernstein
-*/
-static void Salsa20(php_hash_uint32 x[16], php_hash_uint32 in[16])
-{
- int i;
-
- for (i = 20; i > 0; i -= 2) {
- x[ 4] ^= R(x[ 0]+x[12], 7); x[ 8] ^= R(x[ 4]+x[ 0], 9);
- x[12] ^= R(x[ 8]+x[ 4],13); x[ 0] ^= R(x[12]+x[ 8],18);
- x[ 9] ^= R(x[ 5]+x[ 1], 7); x[13] ^= R(x[ 9]+x[ 5], 9);
- x[ 1] ^= R(x[13]+x[ 9],13); x[ 5] ^= R(x[ 1]+x[13],18);
- x[14] ^= R(x[10]+x[ 6], 7); x[ 2] ^= R(x[14]+x[10], 9);
- x[ 6] ^= R(x[ 2]+x[14],13); x[10] ^= R(x[ 6]+x[ 2],18);
- x[ 3] ^= R(x[15]+x[11], 7); x[ 7] ^= R(x[ 3]+x[15], 9);
- x[11] ^= R(x[ 7]+x[ 3],13); x[15] ^= R(x[11]+x[ 7],18);
- x[ 1] ^= R(x[ 0]+x[ 3], 7); x[ 2] ^= R(x[ 1]+x[ 0], 9);
- x[ 3] ^= R(x[ 2]+x[ 1],13); x[ 0] ^= R(x[ 3]+x[ 2],18);
- x[ 6] ^= R(x[ 5]+x[ 4], 7); x[ 7] ^= R(x[ 6]+x[ 5], 9);
- x[ 4] ^= R(x[ 7]+x[ 6],13); x[ 5] ^= R(x[ 4]+x[ 7],18);
- x[11] ^= R(x[10]+x[ 9], 7); x[ 8] ^= R(x[11]+x[10], 9);
- x[ 9] ^= R(x[ 8]+x[11],13); x[10] ^= R(x[ 9]+x[ 8],18);
- x[12] ^= R(x[15]+x[14], 7); x[13] ^= R(x[12]+x[15], 9);
- x[14] ^= R(x[13]+x[12],13); x[15] ^= R(x[14]+x[13],18);
- }
- for (i = 0; i < 16; ++i) {
- x[i] += in[i];
- }
-}
-/* }}} */
-
-static inline void SalsaTransform(PHP_SALSA_CTX *context, const unsigned char input[64])
-{
- php_hash_uint32 i, j, a[16];
-
-#if 0
- fprintf(stderr, "> INPUT: %.*s\n", 64, input);
-#endif
-
- for (i = 0, j = 0; j < 64; i++, j += 4) {
- a[i] = ((php_hash_uint32) input[j + 3]) | (((php_hash_uint32) input[j + 2]) << 8) |
- (((php_hash_uint32) input[j + 1]) << 16) | (((php_hash_uint32) input[j]) << 24);
- }
-
- if (!context->init) {
- memcpy(context->state, a, sizeof(a));
- context->init = 1;
- }
-
- context->Transform(context->state, a);
- memset(a, 0, sizeof(a));
-}
-
-PHP_HASH_API void PHP_SALSA10Init(PHP_SALSA_CTX *context)
-{
- memset(context, 0, sizeof(*context));
- context->Transform = Salsa10;
-}
-
-PHP_HASH_API void PHP_SALSA20Init(PHP_SALSA_CTX *context)
-{
- memset(context, 0, sizeof(*context));
- context->Transform = Salsa20;
-}
-
-PHP_HASH_API void PHP_SALSAUpdate(PHP_SALSA_CTX *context, const unsigned char *input, size_t len)
-{
- if (context->length + len < 64) {
- memcpy(&context->buffer[context->length], input, len);
- context->length += len;
- } else {
- size_t i = 0, r = (context->length + len) % 64;
-
- if (context->length) {
- i = 64 - context->length;
- memcpy(&context->buffer[context->length], input, i);
- SalsaTransform(context, context->buffer);
- memset(context->buffer, 0, 64);
- }
-
- for (; i + 64 <= len; i += 64) {
- SalsaTransform(context, input + i);
- }
-
- memcpy(context->buffer, input + i, r);
- context->length = r;
- }
-}
-
-PHP_HASH_API void PHP_SALSAFinal(unsigned char digest[64], PHP_SALSA_CTX *context)
-{
- php_hash_uint32 i, j;
-
- if (context->length) {
- SalsaTransform(context, context->buffer);
- }
-
- for (i = 0, j = 0; j < 64; i++, j += 4) {
- digest[j] = (unsigned char) ((context->state[i] >> 24) & 0xff);
- digest[j + 1] = (unsigned char) ((context->state[i] >> 16) & 0xff);
- digest[j + 2] = (unsigned char) ((context->state[i] >> 8) & 0xff);
- digest[j + 3] = (unsigned char) (context->state[i] & 0xff);
- }
-
- memset(context, 0, sizeof(*context));
-}
-
-const php_hash_ops php_hash_salsa10_ops = {
- (php_hash_init_func_t) PHP_SALSA10Init,
- (php_hash_update_func_t) PHP_SALSAUpdate,
- (php_hash_final_func_t) PHP_SALSAFinal,
- (php_hash_copy_func_t) php_hash_copy,
- 64,
- 64,
- sizeof(PHP_SALSA_CTX)
-};
-
-const php_hash_ops php_hash_salsa20_ops = {
- (php_hash_init_func_t) PHP_SALSA20Init,
- (php_hash_update_func_t) PHP_SALSAUpdate,
- (php_hash_final_func_t) PHP_SALSAFinal,
- (php_hash_copy_func_t) php_hash_copy,
- 64,
- 64,
- sizeof(PHP_SALSA_CTX)
-};
-
-/*
- * Local variables:
- * tab-width: 4
- * c-basic-offset: 4
- * End:
- * vim600: sw=4 ts=4 fdm=marker
- * vim<600: sw=4 ts=4
- */
generated by cgit v1.2.3 (git 2.39.1) at 2024-08-24 12:01:47 +0000