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php-src/ext/hash/hash_whirlpool.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"
/*
* TODO: simplify Update and Final, those look ridiculously complex
* Mike, 2005-11-23
*/
#include "php_hash_whirlpool.h"
#include "php_hash_whirlpool_tables.h"
#define DIGESTBYTES 64
#define DIGESTBITS (8*DIGESTBYTES) /* 512 */
#define WBLOCKBYTES 64
#define WBLOCKBITS (8*WBLOCKBYTES) /* 512 */
#define LENGTHBYTES 32
#define LENGTHBITS (8*LENGTHBYTES) /* 256 */
static void WhirlpoolTransform(PHP_WHIRLPOOL_CTX *context)
{
int i, r;
uint64_t K[8]; /* the round key */
uint64_t block[8]; /* mu(buffer) */
uint64_t state[8]; /* the cipher state */
uint64_t L[8];
unsigned char *buffer = context->buffer.data;
/*
* map the buffer to a block:
*/
for (i = 0; i < 8; i++, buffer += 8) {
block[i] =
(((uint64_t)buffer[0] ) << 56) ^
(((uint64_t)buffer[1] & 0xffL) << 48) ^
(((uint64_t)buffer[2] & 0xffL) << 40) ^
(((uint64_t)buffer[3] & 0xffL) << 32) ^
(((uint64_t)buffer[4] & 0xffL) << 24) ^
(((uint64_t)buffer[5] & 0xffL) << 16) ^
(((uint64_t)buffer[6] & 0xffL) << 8) ^
(((uint64_t)buffer[7] & 0xffL) );
}
/*
* compute and apply K^0 to the cipher state:
*/
state[0] = block[0] ^ (K[0] = context->state[0]);
state[1] = block[1] ^ (K[1] = context->state[1]);
state[2] = block[2] ^ (K[2] = context->state[2]);
state[3] = block[3] ^ (K[3] = context->state[3]);
state[4] = block[4] ^ (K[4] = context->state[4]);
state[5] = block[5] ^ (K[5] = context->state[5]);
state[6] = block[6] ^ (K[6] = context->state[6]);
state[7] = block[7] ^ (K[7] = context->state[7]);
/*
* iterate over all rounds:
*/
for (r = 1; r <= R; r++) {
/*
* compute K^r from K^{r-1}:
*/
L[0] =
C0[(int)(K[0] >> 56) ] ^
C1[(int)(K[7] >> 48) & 0xff] ^
C2[(int)(K[6] >> 40) & 0xff] ^
C3[(int)(K[5] >> 32) & 0xff] ^
C4[(int)(K[4] >> 24) & 0xff] ^
C5[(int)(K[3] >> 16) & 0xff] ^
C6[(int)(K[2] >> 8) & 0xff] ^
C7[(int)(K[1] ) & 0xff] ^
rc[r];
L[1] =
C0[(int)(K[1] >> 56) ] ^
C1[(int)(K[0] >> 48) & 0xff] ^
C2[(int)(K[7] >> 40) & 0xff] ^
C3[(int)(K[6] >> 32) & 0xff] ^
C4[(int)(K[5] >> 24) & 0xff] ^
C5[(int)(K[4] >> 16) & 0xff] ^
C6[(int)(K[3] >> 8) & 0xff] ^
C7[(int)(K[2] ) & 0xff];
L[2] =
C0[(int)(K[2] >> 56) ] ^
C1[(int)(K[1] >> 48) & 0xff] ^
C2[(int)(K[0] >> 40) & 0xff] ^
C3[(int)(K[7] >> 32) & 0xff] ^
C4[(int)(K[6] >> 24) & 0xff] ^
C5[(int)(K[5] >> 16) & 0xff] ^
C6[(int)(K[4] >> 8) & 0xff] ^
C7[(int)(K[3] ) & 0xff];
L[3] =
C0[(int)(K[3] >> 56) ] ^
C1[(int)(K[2] >> 48) & 0xff] ^
C2[(int)(K[1] >> 40) & 0xff] ^
C3[(int)(K[0] >> 32) & 0xff] ^
C4[(int)(K[7] >> 24) & 0xff] ^
C5[(int)(K[6] >> 16) & 0xff] ^
C6[(int)(K[5] >> 8) & 0xff] ^
C7[(int)(K[4] ) & 0xff];
L[4] =
C0[(int)(K[4] >> 56) ] ^
C1[(int)(K[3] >> 48) & 0xff] ^
C2[(int)(K[2] >> 40) & 0xff] ^
C3[(int)(K[1] >> 32) & 0xff] ^
C4[(int)(K[0] >> 24) & 0xff] ^
C5[(int)(K[7] >> 16) & 0xff] ^
C6[(int)(K[6] >> 8) & 0xff] ^
C7[(int)(K[5] ) & 0xff];
L[5] =
C0[(int)(K[5] >> 56) ] ^
C1[(int)(K[4] >> 48) & 0xff] ^
C2[(int)(K[3] >> 40) & 0xff] ^
C3[(int)(K[2] >> 32) & 0xff] ^
C4[(int)(K[1] >> 24) & 0xff] ^
C5[(int)(K[0] >> 16) & 0xff] ^
C6[(int)(K[7] >> 8) & 0xff] ^
C7[(int)(K[6] ) & 0xff];
L[6] =
C0[(int)(K[6] >> 56) ] ^
C1[(int)(K[5] >> 48) & 0xff] ^
C2[(int)(K[4] >> 40) & 0xff] ^
C3[(int)(K[3] >> 32) & 0xff] ^
C4[(int)(K[2] >> 24) & 0xff] ^
C5[(int)(K[1] >> 16) & 0xff] ^
C6[(int)(K[0] >> 8) & 0xff] ^
C7[(int)(K[7] ) & 0xff];
L[7] =
C0[(int)(K[7] >> 56) ] ^
C1[(int)(K[6] >> 48) & 0xff] ^
C2[(int)(K[5] >> 40) & 0xff] ^
C3[(int)(K[4] >> 32) & 0xff] ^
C4[(int)(K[3] >> 24) & 0xff] ^
C5[(int)(K[2] >> 16) & 0xff] ^
C6[(int)(K[1] >> 8) & 0xff] ^
C7[(int)(K[0] ) & 0xff];
K[0] = L[0];
K[1] = L[1];
K[2] = L[2];
K[3] = L[3];
K[4] = L[4];
K[5] = L[5];
K[6] = L[6];
K[7] = L[7];
/*
* apply the r-th round transformation:
*/
L[0] =
C0[(int)(state[0] >> 56) ] ^
C1[(int)(state[7] >> 48) & 0xff] ^
C2[(int)(state[6] >> 40) & 0xff] ^
C3[(int)(state[5] >> 32) & 0xff] ^
C4[(int)(state[4] >> 24) & 0xff] ^
C5[(int)(state[3] >> 16) & 0xff] ^
C6[(int)(state[2] >> 8) & 0xff] ^
C7[(int)(state[1] ) & 0xff] ^
K[0];
L[1] =
C0[(int)(state[1] >> 56) ] ^
C1[(int)(state[0] >> 48) & 0xff] ^
C2[(int)(state[7] >> 40) & 0xff] ^
C3[(int)(state[6] >> 32) & 0xff] ^
C4[(int)(state[5] >> 24) & 0xff] ^
C5[(int)(state[4] >> 16) & 0xff] ^
C6[(int)(state[3] >> 8) & 0xff] ^
C7[(int)(state[2] ) & 0xff] ^
K[1];
L[2] =
C0[(int)(state[2] >> 56) ] ^
C1[(int)(state[1] >> 48) & 0xff] ^
C2[(int)(state[0] >> 40) & 0xff] ^
C3[(int)(state[7] >> 32) & 0xff] ^
C4[(int)(state[6] >> 24) & 0xff] ^
C5[(int)(state[5] >> 16) & 0xff] ^
C6[(int)(state[4] >> 8) & 0xff] ^
C7[(int)(state[3] ) & 0xff] ^
K[2];
L[3] =
C0[(int)(state[3] >> 56) ] ^
C1[(int)(state[2] >> 48) & 0xff] ^
C2[(int)(state[1] >> 40) & 0xff] ^
C3[(int)(state[0] >> 32) & 0xff] ^
C4[(int)(state[7] >> 24) & 0xff] ^
C5[(int)(state[6] >> 16) & 0xff] ^
C6[(int)(state[5] >> 8) & 0xff] ^
C7[(int)(state[4] ) & 0xff] ^
K[3];
L[4] =
C0[(int)(state[4] >> 56) ] ^
C1[(int)(state[3] >> 48) & 0xff] ^
C2[(int)(state[2] >> 40) & 0xff] ^
C3[(int)(state[1] >> 32) & 0xff] ^
C4[(int)(state[0] >> 24) & 0xff] ^
C5[(int)(state[7] >> 16) & 0xff] ^
C6[(int)(state[6] >> 8) & 0xff] ^
C7[(int)(state[5] ) & 0xff] ^
K[4];
L[5] =
C0[(int)(state[5] >> 56) ] ^
C1[(int)(state[4] >> 48) & 0xff] ^
C2[(int)(state[3] >> 40) & 0xff] ^
C3[(int)(state[2] >> 32) & 0xff] ^
C4[(int)(state[1] >> 24) & 0xff] ^
C5[(int)(state[0] >> 16) & 0xff] ^
C6[(int)(state[7] >> 8) & 0xff] ^
C7[(int)(state[6] ) & 0xff] ^
K[5];
L[6] =
C0[(int)(state[6] >> 56) ] ^
C1[(int)(state[5] >> 48) & 0xff] ^
C2[(int)(state[4] >> 40) & 0xff] ^
C3[(int)(state[3] >> 32) & 0xff] ^
C4[(int)(state[2] >> 24) & 0xff] ^
C5[(int)(state[1] >> 16) & 0xff] ^
C6[(int)(state[0] >> 8) & 0xff] ^
C7[(int)(state[7] ) & 0xff] ^
K[6];
L[7] =
C0[(int)(state[7] >> 56) ] ^
C1[(int)(state[6] >> 48) & 0xff] ^
C2[(int)(state[5] >> 40) & 0xff] ^
C3[(int)(state[4] >> 32) & 0xff] ^
C4[(int)(state[3] >> 24) & 0xff] ^
C5[(int)(state[2] >> 16) & 0xff] ^
C6[(int)(state[1] >> 8) & 0xff] ^
C7[(int)(state[0] ) & 0xff] ^
K[7];
state[0] = L[0];
state[1] = L[1];
state[2] = L[2];
state[3] = L[3];
state[4] = L[4];
state[5] = L[5];
state[6] = L[6];
state[7] = L[7];
}
/*
* apply the Miyaguchi-Preneel compression function:
*/
context->state[0] ^= state[0] ^ block[0];
context->state[1] ^= state[1] ^ block[1];
context->state[2] ^= state[2] ^ block[2];
context->state[3] ^= state[3] ^ block[3];
context->state[4] ^= state[4] ^ block[4];
context->state[5] ^= state[5] ^ block[5];
context->state[6] ^= state[6] ^ block[6];
context->state[7] ^= state[7] ^ block[7];
ZEND_SECURE_ZERO(state, sizeof(state));
}
PHP_HASH_API void PHP_WHIRLPOOLInit(PHP_WHIRLPOOL_CTX *context)
{
memset(context, 0, sizeof(*context));
}
PHP_HASH_API void PHP_WHIRLPOOLUpdate(PHP_WHIRLPOOL_CTX *context, const unsigned char *input, size_t len)
{
uint64_t sourceBits = len * 8;
int sourcePos = 0; /* index of leftmost source unsigned char containing data (1 to 8 bits). */
int sourceGap = (8 - ((int)sourceBits & 7)) & 7; /* space on source[sourcePos]. */
int bufferRem = context->buffer.bits & 7; /* occupied bits on buffer[bufferPos]. */
const unsigned char *source = input;
unsigned char *buffer = context->buffer.data;
unsigned char *bitLength = context->bitlength;
int bufferBits = context->buffer.bits;
int bufferPos = context->buffer.pos;
uint32_t b, carry;
int i;
/*
* tally the length of the added data:
*/
uint64_t value = sourceBits;
for (i = 31, carry = 0; i >= 0 && (carry != 0 || value != L64(0)); i--) {
carry += bitLength[i] + ((uint32_t)value & 0xff);
bitLength[i] = (unsigned char)carry;
carry >>= 8;
value >>= 8;
}
/*
* process data in chunks of 8 bits (a more efficient approach would be to take whole-word chunks):
*/
while (sourceBits > 8) {
/* N.B. at least source[sourcePos] and source[sourcePos+1] contain data. */
/*
* take a byte from the source:
*/
b = ((source[sourcePos] << sourceGap) & 0xff) |
((source[sourcePos + 1] & 0xff) >> (8 - sourceGap));
/*
* process this byte:
*/
buffer[bufferPos++] |= (unsigned char)(b >> bufferRem);
bufferBits += 8 - bufferRem; /* bufferBits = 8*bufferPos; */
if (bufferBits == DIGESTBITS) {
/*
* process data block:
*/
WhirlpoolTransform(context);
/*
* reset buffer:
*/
bufferBits = bufferPos = 0;
}
buffer[bufferPos] = (unsigned char) (b << (8 - bufferRem));
bufferBits += bufferRem;
/*
* proceed to remaining data:
*/
sourceBits -= 8;
sourcePos++;
}
/* now 0 <= sourceBits <= 8;
* furthermore, all data (if any is left) is in source[sourcePos].
*/
if (sourceBits > 0) {
b = (source[sourcePos] << sourceGap) & 0xff; /* bits are left-justified on b. */
/*
* process the remaining bits:
*/
buffer[bufferPos] |= b >> bufferRem;
} else {
b = 0;
}
if (bufferRem + sourceBits < 8) {
/*
* all remaining data fits on buffer[bufferPos],
* and there still remains some space.
*/
bufferBits += (int) sourceBits;
} else {
/*
* buffer[bufferPos] is full:
*/
bufferPos++;
bufferBits += 8 - bufferRem; /* bufferBits = 8*bufferPos; */
sourceBits -= 8 - bufferRem;
/* now 0 <= sourceBits < 8;
* furthermore, all data (if any is left) is in source[sourcePos].
*/
if (bufferBits == DIGESTBITS) {
/*
* process data block:
*/
WhirlpoolTransform(context);
/*
* reset buffer:
*/
bufferBits = bufferPos = 0;
}
buffer[bufferPos] = (unsigned char) (b << (8 - bufferRem));
bufferBits += (int)sourceBits;
}
context->buffer.bits = bufferBits;
context->buffer.pos = bufferPos;
}
PHP_HASH_API void PHP_WHIRLPOOLFinal(unsigned char digest[64], PHP_WHIRLPOOL_CTX *context)
{
int i;
unsigned char *buffer = context->buffer.data;
unsigned char *bitLength = context->bitlength;
int bufferBits = context->buffer.bits;
int bufferPos = context->buffer.pos;
/*
* append a '1'-bit:
*/
buffer[bufferPos] |= 0x80U >> (bufferBits & 7);
bufferPos++; /* all remaining bits on the current unsigned char are set to zero. */
/*
* pad with zero bits to complete (N*WBLOCKBITS - LENGTHBITS) bits:
*/
if (bufferPos > WBLOCKBYTES - LENGTHBYTES) {
if (bufferPos < WBLOCKBYTES) {
memset(&buffer[bufferPos], 0, WBLOCKBYTES - bufferPos);
}
/*
* process data block:
*/
WhirlpoolTransform(context);
/*
* reset buffer:
*/
bufferPos = 0;
}
if (bufferPos < WBLOCKBYTES - LENGTHBYTES) {
memset(&buffer[bufferPos], 0, (WBLOCKBYTES - LENGTHBYTES) - bufferPos);
}
bufferPos = WBLOCKBYTES - LENGTHBYTES;
/*
* append bit length of hashed data:
*/
memcpy(&buffer[WBLOCKBYTES - LENGTHBYTES], bitLength, LENGTHBYTES);
/*
* process data block:
*/
WhirlpoolTransform(context);
/*
* return the completed message digest:
*/
for (i = 0; i < DIGESTBYTES/8; i++) {
digest[0] = (unsigned char)(context->state[i] >> 56);
digest[1] = (unsigned char)(context->state[i] >> 48);
digest[2] = (unsigned char)(context->state[i] >> 40);
digest[3] = (unsigned char)(context->state[i] >> 32);
digest[4] = (unsigned char)(context->state[i] >> 24);
digest[5] = (unsigned char)(context->state[i] >> 16);
digest[6] = (unsigned char)(context->state[i] >> 8);
digest[7] = (unsigned char)(context->state[i] );
digest += 8;
}
ZEND_SECURE_ZERO(context, sizeof(*context));
}
const php_hash_ops php_hash_whirlpool_ops = {
(php_hash_init_func_t) PHP_WHIRLPOOLInit,
(php_hash_update_func_t) PHP_WHIRLPOOLUpdate,
(php_hash_final_func_t) PHP_WHIRLPOOLFinal,
(php_hash_copy_func_t) php_hash_copy,
64,
64,
sizeof(PHP_WHIRLPOOL_CTX),
1
};
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