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php-src/ext/hash/hash_whirlpool.c
Peter Kokot 8d3f8ca12a Remove unused Git attributes ident 
The $Id$ keywords were used in Subversion where they can be substituted
with filename, last revision number change, last changed date, and last
user who changed it.

In Git this functionality is different and can be done with Git attribute
ident. These need to be defined manually for each file in the
.gitattributes file and are afterwards replaced with 40-character
hexadecimal blob object name which is based only on the particular file
contents.

This patch simplifies handling of $Id$ keywords by removing them since
they are not used anymore.
2018-07-25 00:53:25 +02:00

453 lines
16 KiB
C
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/*
+----------------------------------------------------------------------+
| PHP Version 7 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2018 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
};
/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* End:
* vim600: sw=4 ts=4 fdm=marker
* vim<600: sw=4 ts=4
*/
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