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php-src/ext/hash/hash_gost.c
Peter Kokot 92ac598aab Remove local variables 
This patch removes the so called local variables defined per
file basis for certain editors to properly show tab width, and
similar settings. These are mainly used by Vim and Emacs editors
yet with recent changes the once working definitions don't work
anymore in Vim without custom plugins or additional configuration.
Neither are these settings synced across the PHP code base.

A simpler and better approach is EditorConfig and fixing code
using some code style fixing tools in the future instead.

This patch also removes the so called modelines for Vim. Modelines
allow Vim editor specifically to set some editor configuration such as
syntax highlighting, indentation style and tab width to be set in the
first line or the last 5 lines per file basis. Since the php test
files have syntax highlighting already set in most editors properly and
EditorConfig takes care of the indentation settings, this patch removes
these as well for the Vim 6.0 and newer versions.

With the removal of local variables for certain editors such as
Emacs and Vim, the footer is also probably not needed anymore when
creating extensions using ext_skel.php script.

Additionally, Vim modelines for setting php syntax and some editor
settings has been removed from some *.phpt files.  All these are
mostly not relevant for phpt files neither work properly in the
middle of the file.
2019-02-03 21:03:00 +01:00

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/*
+----------------------------------------------------------------------+
| PHP Version 7 |
+----------------------------------------------------------------------+
| Copyright (c) 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> |
+----------------------------------------------------------------------+
*/
#include "php_hash.h"
#include "php_hash_gost.h"
#include "php_hash_gost_tables.h"
/* {{{ Gost()
* derived from gost_compress() by Markku-Juhani Saarinen <mjos@ssh.fi>
*/
#define round(tables, k1, k2) \
t = (k1) + r; \
l ^= tables[0][t & 0xff] ^ tables[1][(t >> 8) & 0xff] ^ \
tables[2][(t >> 16) & 0xff] ^ tables[3][t >> 24]; \
t = (k2) + l; \
r ^= tables[0][t & 0xff] ^ tables[1][(t >> 8) & 0xff] ^ \
tables[2][(t >> 16) & 0xff] ^ tables[3][t >> 24];
#define R(tables, key, h, i, t, l, r) \
r = h[i]; \
l = h[i + 1]; \
round(tables, key[0], key[1]) \
round(tables, key[2], key[3]) \
round(tables, key[4], key[5]) \
round(tables, key[6], key[7]) \
round(tables, key[0], key[1]) \
round(tables, key[2], key[3]) \
round(tables, key[4], key[5]) \
round(tables, key[6], key[7]) \
round(tables, key[0], key[1]) \
round(tables, key[2], key[3]) \
round(tables, key[4], key[5]) \
round(tables, key[6], key[7]) \
round(tables, key[7], key[6]) \
round(tables, key[5], key[4]) \
round(tables, key[3], key[2]) \
round(tables, key[1], key[0]) \
t = r; \
r = l; \
l = t; \
#define X(w, u, v) \
w[0] = u[0] ^ v[0]; \
w[1] = u[1] ^ v[1]; \
w[2] = u[2] ^ v[2]; \
w[3] = u[3] ^ v[3]; \
w[4] = u[4] ^ v[4]; \
w[5] = u[5] ^ v[5]; \
w[6] = u[6] ^ v[6]; \
w[7] = u[7] ^ v[7];
#define P(key, w) \
key[0] = (w[0] & 0x000000ff) | ((w[2] & 0x000000ff) << 8) | \
((w[4] & 0x000000ff) << 16) | ((w[6] & 0x000000ff) << 24); \
key[1] = ((w[0] & 0x0000ff00) >> 8) | (w[2] & 0x0000ff00) | \
((w[4] & 0x0000ff00) << 8) | ((w[6] & 0x0000ff00) << 16); \
key[2] = ((w[0] & 0x00ff0000) >> 16) | ((w[2] & 0x00ff0000) >> 8) | \
(w[4] & 0x00ff0000) | ((w[6] & 0x00ff0000) << 8); \
key[3] = ((w[0] & 0xff000000) >> 24) | ((w[2] & 0xff000000) >> 16) | \
((w[4] & 0xff000000) >> 8) | (w[6] & 0xff000000); \
key[4] = (w[1] & 0x000000ff) | ((w[3] & 0x000000ff) << 8) | \
((w[5] & 0x000000ff) << 16) | ((w[7] & 0x000000ff) << 24); \
key[5] = ((w[1] & 0x0000ff00) >> 8) | (w[3] & 0x0000ff00) | \
((w[5] & 0x0000ff00) << 8) | ((w[7] & 0x0000ff00) << 16); \
key[6] = ((w[1] & 0x00ff0000) >> 16) | ((w[3] & 0x00ff0000) >> 8) | \
(w[5] & 0x00ff0000) | ((w[7] & 0x00ff0000) << 8); \
key[7] = ((w[1] & 0xff000000) >> 24) | ((w[3] & 0xff000000) >> 16) | \
((w[5] & 0xff000000) >> 8) | (w[7] & 0xff000000);
#define A(x, l, r) \
l = x[0] ^ x[2]; \
r = x[1] ^ x[3]; \
x[0] = x[2]; \
x[1] = x[3]; \
x[2] = x[4]; \
x[3] = x[5]; \
x[4] = x[6]; \
x[5] = x[7]; \
x[6] = l; \
x[7] = r;
#define AA(x, l, r) \
l = x[0]; \
r = x[2]; \
x[0] = x[4]; \
x[2] = x[6]; \
x[4] = l ^ r; \
x[6] = x[0] ^ r; \
l = x[1]; \
r = x[3]; \
x[1] = x[5]; \
x[3] = x[7]; \
x[5] = l ^ r; \
x[7] = x[1] ^ r;
#define C(x) \
x[0] ^= 0xff00ff00; \
x[1] ^= 0xff00ff00; \
x[2] ^= 0x00ff00ff; \
x[3] ^= 0x00ff00ff; \
x[4] ^= 0x00ffff00; \
x[5] ^= 0xff0000ff; \
x[6] ^= 0x000000ff; \
x[7] ^= 0xff00ffff;
#define S(s, l, r) \
s[i] = r; \
s[i + 1] = l;
#define SHIFT12(u, m, s) \
u[0] = m[0] ^ s[6]; \
u[1] = m[1] ^ s[7]; \
u[2] = m[2] ^ (s[0] << 16) ^ (s[0] >> 16) ^ (s[0] & 0xffff) ^ \
(s[1] & 0xffff) ^ (s[1] >> 16) ^ (s[2] << 16) ^ s[6] ^ (s[6] << 16) ^ \
(s[7] & 0xffff0000) ^ (s[7] >> 16); \
u[3] = m[3] ^ (s[0] & 0xffff) ^ (s[0] << 16) ^ (s[1] & 0xffff) ^ \
(s[1] << 16) ^ (s[1] >> 16) ^ (s[2] << 16) ^ (s[2] >> 16) ^ \
(s[3] << 16) ^ s[6] ^ (s[6] << 16) ^ (s[6] >> 16) ^ (s[7] & 0xffff) ^ \
(s[7] << 16) ^ (s[7] >> 16); \
u[4] = m[4] ^ \
(s[0] & 0xffff0000) ^ (s[0] << 16) ^ (s[0] >> 16) ^ \
(s[1] & 0xffff0000) ^ (s[1] >> 16) ^ (s[2] << 16) ^ (s[2] >> 16) ^ \
(s[3] << 16) ^ (s[3] >> 16) ^ (s[4] << 16) ^ (s[6] << 16) ^ \
(s[6] >> 16) ^(s[7] & 0xffff) ^ (s[7] << 16) ^ (s[7] >> 16); \
u[5] = m[5] ^ (s[0] << 16) ^ (s[0] >> 16) ^ (s[0] & 0xffff0000) ^ \
(s[1] & 0xffff) ^ s[2] ^ (s[2] >> 16) ^ (s[3] << 16) ^ (s[3] >> 16) ^ \
(s[4] << 16) ^ (s[4] >> 16) ^ (s[5] << 16) ^ (s[6] << 16) ^ \
(s[6] >> 16) ^ (s[7] & 0xffff0000) ^ (s[7] << 16) ^ (s[7] >> 16); \
u[6] = m[6] ^ s[0] ^ (s[1] >> 16) ^ (s[2] << 16) ^ s[3] ^ (s[3] >> 16) ^ \
(s[4] << 16) ^ (s[4] >> 16) ^ (s[5] << 16) ^ (s[5] >> 16) ^ s[6] ^ \
(s[6] << 16) ^ (s[6] >> 16) ^ (s[7] << 16); \
u[7] = m[7] ^ (s[0] & 0xffff0000) ^ (s[0] << 16) ^ (s[1] & 0xffff) ^ \
(s[1] << 16) ^ (s[2] >> 16) ^ (s[3] << 16) ^ s[4] ^ (s[4] >> 16) ^ \
(s[5] << 16) ^ (s[5] >> 16) ^ (s[6] >> 16) ^ (s[7] & 0xffff) ^ \
(s[7] << 16) ^ (s[7] >> 16);
#define SHIFT16(h, v, u) \
v[0] = h[0] ^ (u[1] << 16) ^ (u[0] >> 16); \
v[1] = h[1] ^ (u[2] << 16) ^ (u[1] >> 16); \
v[2] = h[2] ^ (u[3] << 16) ^ (u[2] >> 16); \
v[3] = h[3] ^ (u[4] << 16) ^ (u[3] >> 16); \
v[4] = h[4] ^ (u[5] << 16) ^ (u[4] >> 16); \
v[5] = h[5] ^ (u[6] << 16) ^ (u[5] >> 16); \
v[6] = h[6] ^ (u[7] << 16) ^ (u[6] >> 16); \
v[7] = h[7] ^ (u[0] & 0xffff0000) ^ (u[0] << 16) ^ (u[7] >> 16) ^ \
(u[1] & 0xffff0000) ^ (u[1] << 16) ^ (u[6] << 16) ^ (u[7] & 0xffff0000);
#define SHIFT61(h, v) \
h[0] = (v[0] & 0xffff0000) ^ (v[0] << 16) ^ (v[0] >> 16) ^ (v[1] >> 16) ^ \
(v[1] & 0xffff0000) ^ (v[2] << 16) ^ (v[3] >> 16) ^ (v[4] << 16) ^ \
(v[5] >> 16) ^ v[5] ^ (v[6] >> 16) ^ (v[7] << 16) ^ (v[7] >> 16) ^ \
(v[7] & 0xffff); \
h[1] = (v[0] << 16) ^ (v[0] >> 16) ^ (v[0] & 0xffff0000) ^ (v[1] & 0xffff) ^ \
v[2] ^ (v[2] >> 16) ^ (v[3] << 16) ^ (v[4] >> 16) ^ (v[5] << 16) ^ \
(v[6] << 16) ^ v[6] ^ (v[7] & 0xffff0000) ^ (v[7] >> 16); \
h[2] = (v[0] & 0xffff) ^ (v[0] << 16) ^ (v[1] << 16) ^ (v[1] >> 16) ^ \
(v[1] & 0xffff0000) ^ (v[2] << 16) ^ (v[3] >> 16) ^ v[3] ^ (v[4] << 16) ^ \
(v[5] >> 16) ^ v[6] ^ (v[6] >> 16) ^ (v[7] & 0xffff) ^ (v[7] << 16) ^ \
(v[7] >> 16); \
h[3] = (v[0] << 16) ^ (v[0] >> 16) ^ (v[0] & 0xffff0000) ^ \
(v[1] & 0xffff0000) ^ (v[1] >> 16) ^ (v[2] << 16) ^ (v[2] >> 16) ^ v[2] ^ \
(v[3] << 16) ^ (v[4] >> 16) ^ v[4] ^ (v[5] << 16) ^ (v[6] << 16) ^ \
(v[7] & 0xffff) ^ (v[7] >> 16); \
h[4] = (v[0] >> 16) ^ (v[1] << 16) ^ v[1] ^ (v[2] >> 16) ^ v[2] ^ \
(v[3] << 16) ^ (v[3] >> 16) ^ v[3] ^ (v[4] << 16) ^ (v[5] >> 16) ^ \
v[5] ^ (v[6] << 16) ^ (v[6] >> 16) ^ (v[7] << 16); \
h[5] = (v[0] << 16) ^ (v[0] & 0xffff0000) ^ (v[1] << 16) ^ (v[1] >> 16) ^ \
(v[1] & 0xffff0000) ^ (v[2] << 16) ^ v[2] ^ (v[3] >> 16) ^ v[3] ^ \
(v[4] << 16) ^ (v[4] >> 16) ^ v[4] ^ (v[5] << 16) ^ (v[6] << 16) ^ \
(v[6] >> 16) ^ v[6] ^ (v[7] << 16) ^ (v[7] >> 16) ^ (v[7] & 0xffff0000); \
h[6] = v[0] ^ v[2] ^ (v[2] >> 16) ^ v[3] ^ (v[3] << 16) ^ v[4] ^ \
(v[4] >> 16) ^ (v[5] << 16) ^ (v[5] >> 16) ^ v[5] ^ (v[6] << 16) ^ \
(v[6] >> 16) ^ v[6] ^ (v[7] << 16) ^ v[7]; \
h[7] = v[0] ^ (v[0] >> 16) ^ (v[1] << 16) ^ (v[1] >> 16) ^ (v[2] << 16) ^ \
(v[3] >> 16) ^ v[3] ^ (v[4] << 16) ^ v[4] ^ (v[5] >> 16) ^ v[5] ^ \
(v[6] << 16) ^ (v[6] >> 16) ^ (v[7] << 16) ^ v[7];
#define PASS(tables) \
X(w, u, v); \
P(key, w); \
R((tables), key, h, i, t, l, r); \
S(s, l, r); \
if (i != 6) { \
A(u, l, r); \
if (i == 2) { \
C(u); \
} \
AA(v, l, r); \
}
static inline void Gost(PHP_GOST_CTX *context, uint32_t data[8])
{
int i;
uint32_t l, r, t, key[8], u[8], v[8], w[8], s[8], *h = context->state, *m = data;
memcpy(u, context->state, sizeof(u));
memcpy(v, data, sizeof(v));
for (i = 0; i < 8; i += 2) {
PASS(*context->tables);
}
SHIFT12(u, m, s);
SHIFT16(h, v, u);
SHIFT61(h, v);
}
/* }}} */
static inline void GostTransform(PHP_GOST_CTX *context, const unsigned char input[32])
{
int i, j;
uint32_t data[8], temp = 0;
for (i = 0, j = 0; i < 8; ++i, j += 4) {
data[i] = ((uint32_t) input[j]) | (((uint32_t) input[j + 1]) << 8) |
(((uint32_t) input[j + 2]) << 16) | (((uint32_t) input[j + 3]) << 24);
context->state[i + 8] += data[i] + temp;
temp = context->state[i + 8] < data[i] ? 1 : (context->state[i + 8] == data[i] ? temp : 0);
}
Gost(context, data);
}
PHP_HASH_API void PHP_GOSTInit(PHP_GOST_CTX *context)
{
memset(context, 0, sizeof(*context));
context->tables = &tables_test;
}
PHP_HASH_API void PHP_GOSTInitCrypto(PHP_GOST_CTX *context)
{
PHP_GOSTInit(context);
context->tables = &tables_crypto;
}
static const uint32_t MAX32 = 0xffffffffLU;
PHP_HASH_API void PHP_GOSTUpdate(PHP_GOST_CTX *context, const unsigned char *input, size_t len)
{
if ((MAX32 - context->count[0]) < (len * 8)) {
context->count[1]++;
context->count[0] = MAX32 - context->count[0];
context->count[0] = (len * 8) - context->count[0];
} else {
context->count[0] += len * 8;
}
if (context->length + len < 32) {
memcpy(&context->buffer[context->length], input, len);
context->length += (unsigned char)len;
} else {
size_t i = 0, r = (context->length + len) % 32;
if (context->length) {
i = 32 - context->length;
memcpy(&context->buffer[context->length], input, i);
GostTransform(context, context->buffer);
}
for (; i + 32 <= len; i += 32) {
GostTransform(context, input + i);
}
memcpy(context->buffer, input + i, r);
ZEND_SECURE_ZERO(&context->buffer[r], 32 - r);
context->length = (unsigned char)r;
}
}
PHP_HASH_API void PHP_GOSTFinal(unsigned char digest[32], PHP_GOST_CTX *context)
{
uint32_t i, j, l[8] = {0};
if (context->length) {
GostTransform(context, context->buffer);
}
memcpy(l, context->count, sizeof(context->count));
Gost(context, l);
memcpy(l, &context->state[8], sizeof(l));
Gost(context, l);
for (i = 0, j = 0; j < 32; i++, j += 4) {
digest[j] = (unsigned char) (context->state[i] & 0xff);
digest[j + 1] = (unsigned char) ((context->state[i] >> 8) & 0xff);
digest[j + 2] = (unsigned char) ((context->state[i] >> 16) & 0xff);
digest[j + 3] = (unsigned char) ((context->state[i] >> 24) & 0xff);
}
ZEND_SECURE_ZERO(context, sizeof(*context));
}
const php_hash_ops php_hash_gost_ops = {
(php_hash_init_func_t) PHP_GOSTInit,
(php_hash_update_func_t) PHP_GOSTUpdate,
(php_hash_final_func_t) PHP_GOSTFinal,
(php_hash_copy_func_t) php_hash_copy,
32,
32,
sizeof(PHP_GOST_CTX),
1
};
const php_hash_ops php_hash_gost_crypto_ops = {
(php_hash_init_func_t) PHP_GOSTInitCrypto,
(php_hash_update_func_t) PHP_GOSTUpdate,
(php_hash_final_func_t) PHP_GOSTFinal,
(php_hash_copy_func_t) php_hash_copy,
32,
32,
sizeof(PHP_GOST_CTX),
1
};
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