diff options
Diffstat (limited to 'ext/standard/sha1.c')
| -rw-r--r-- | ext/standard/sha1.c | 412 |
1 files changed, 412 insertions, 0 deletions
diff --git a/ext/standard/sha1.c b/ext/standard/sha1.c new file mode 100644 index 0000000..4326db9 --- /dev/null +++ b/ext/standard/sha1.c @@ -0,0 +1,412 @@ +/* + +----------------------------------------------------------------------+ + | PHP Version 5 | + +----------------------------------------------------------------------+ + | Copyright (c) 1997-2013 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. | + +----------------------------------------------------------------------+ + | Author: Stefan Esser <sesser@php.net> | + +----------------------------------------------------------------------+ +*/ + +/* $Id$ */ + +#include "php.h" + +/* This code is heavily based on the PHP md5 implementation */ + +#include "sha1.h" +#include "md5.h" + +PHPAPI void make_sha1_digest(char *sha1str, unsigned char *digest) +{ + make_digest_ex(sha1str, digest, 20); +} + +/* {{{ proto string sha1(string str [, bool raw_output]) + Calculate the sha1 hash of a string */ +PHP_FUNCTION(sha1) +{ + char *arg; + int arg_len; + zend_bool raw_output = 0; + char sha1str[41]; + PHP_SHA1_CTX context; + unsigned char digest[20]; + + if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s|b", &arg, &arg_len, &raw_output) == FAILURE) { + return; + } + + sha1str[0] = '\0'; + PHP_SHA1Init(&context); + PHP_SHA1Update(&context, arg, arg_len); + PHP_SHA1Final(digest, &context); + if (raw_output) { + RETURN_STRINGL(digest, 20, 1); + } else { + make_digest_ex(sha1str, digest, 20); + RETVAL_STRING(sha1str, 1); + } + +} + +/* }}} */ + + +/* {{{ proto string sha1_file(string filename [, bool raw_output]) + Calculate the sha1 hash of given filename */ +PHP_FUNCTION(sha1_file) +{ + char *arg; + int arg_len; + zend_bool raw_output = 0; + char sha1str[41]; + unsigned char buf[1024]; + unsigned char digest[20]; + PHP_SHA1_CTX context; + int n; + php_stream *stream; + + if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "p|b", &arg, &arg_len, &raw_output) == FAILURE) { + return; + } + + stream = php_stream_open_wrapper(arg, "rb", REPORT_ERRORS, NULL); + if (!stream) { + RETURN_FALSE; + } + + PHP_SHA1Init(&context); + + while ((n = php_stream_read(stream, buf, sizeof(buf))) > 0) { + PHP_SHA1Update(&context, buf, n); + } + + PHP_SHA1Final(digest, &context); + + php_stream_close(stream); + + if (n<0) { + RETURN_FALSE; + } + + if (raw_output) { + RETURN_STRINGL(digest, 20, 1); + } else { + make_digest_ex(sha1str, digest, 20); + RETVAL_STRING(sha1str, 1); + } +} +/* }}} */ + + +static void SHA1Transform(php_uint32[5], const unsigned char[64]); +static void SHA1Encode(unsigned char *, php_uint32 *, unsigned int); +static void SHA1Decode(php_uint32 *, const unsigned char *, unsigned int); + +static unsigned char PADDING[64] = +{ + 0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 +}; + +/* F, G, H and I are basic SHA1 functions. + */ +#define F(x, y, z) ((z) ^ ((x) & ((y) ^ (z)))) +#define G(x, y, z) ((x) ^ (y) ^ (z)) +#define H(x, y, z) (((x) & (y)) | ((z) & ((x) | (y)))) +#define I(x, y, z) ((x) ^ (y) ^ (z)) + +/* ROTATE_LEFT rotates x left n bits. + */ +#define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32-(n)))) + +/* W[i] + */ +#define W(i) ( tmp=x[(i-3)&15]^x[(i-8)&15]^x[(i-14)&15]^x[i&15], \ + (x[i&15]=ROTATE_LEFT(tmp, 1)) ) + +/* FF, GG, HH, and II transformations for rounds 1, 2, 3, and 4. + */ +#define FF(a, b, c, d, e, w) { \ + (e) += F ((b), (c), (d)) + (w) + (php_uint32)(0x5A827999); \ + (e) += ROTATE_LEFT ((a), 5); \ + (b) = ROTATE_LEFT((b), 30); \ + } +#define GG(a, b, c, d, e, w) { \ + (e) += G ((b), (c), (d)) + (w) + (php_uint32)(0x6ED9EBA1); \ + (e) += ROTATE_LEFT ((a), 5); \ + (b) = ROTATE_LEFT((b), 30); \ + } +#define HH(a, b, c, d, e, w) { \ + (e) += H ((b), (c), (d)) + (w) + (php_uint32)(0x8F1BBCDC); \ + (e) += ROTATE_LEFT ((a), 5); \ + (b) = ROTATE_LEFT((b), 30); \ + } +#define II(a, b, c, d, e, w) { \ + (e) += I ((b), (c), (d)) + (w) + (php_uint32)(0xCA62C1D6); \ + (e) += ROTATE_LEFT ((a), 5); \ + (b) = ROTATE_LEFT((b), 30); \ + } + + +/* {{{ PHP_SHA1Init + * SHA1 initialization. Begins an SHA1 operation, writing a new context. + */ +PHPAPI void PHP_SHA1Init(PHP_SHA1_CTX * context) +{ + context->count[0] = context->count[1] = 0; + /* Load magic initialization constants. + */ + context->state[0] = 0x67452301; + context->state[1] = 0xefcdab89; + context->state[2] = 0x98badcfe; + context->state[3] = 0x10325476; + context->state[4] = 0xc3d2e1f0; +} +/* }}} */ + +/* {{{ PHP_SHA1Update + SHA1 block update operation. Continues an SHA1 message-digest + operation, processing another message block, and updating the + context. + */ +PHPAPI void PHP_SHA1Update(PHP_SHA1_CTX * context, const unsigned char *input, + unsigned int inputLen) +{ + unsigned int i, index, partLen; + + /* Compute number of bytes mod 64 */ + index = (unsigned int) ((context->count[0] >> 3) & 0x3F); + + /* Update number of bits */ + if ((context->count[0] += ((php_uint32) inputLen << 3)) + < ((php_uint32) inputLen << 3)) + context->count[1]++; + context->count[1] += ((php_uint32) inputLen >> 29); + + partLen = 64 - index; + + /* Transform as many times as possible. + */ + if (inputLen >= partLen) { + memcpy + ((unsigned char*) & context->buffer[index], (unsigned char*) input, partLen); + SHA1Transform(context->state, context->buffer); + + for (i = partLen; i + 63 < inputLen; i += 64) + SHA1Transform(context->state, &input[i]); + + index = 0; + } else + i = 0; + + /* Buffer remaining input */ + memcpy + ((unsigned char*) & context->buffer[index], (unsigned char*) & input[i], + inputLen - i); +} +/* }}} */ + +/* {{{ PHP_SHA1Final + SHA1 finalization. Ends an SHA1 message-digest operation, writing the + the message digest and zeroizing the context. + */ +PHPAPI void PHP_SHA1Final(unsigned char digest[20], PHP_SHA1_CTX * context) +{ + unsigned char bits[8]; + unsigned int index, padLen; + + /* Save number of bits */ + bits[7] = context->count[0] & 0xFF; + bits[6] = (context->count[0] >> 8) & 0xFF; + bits[5] = (context->count[0] >> 16) & 0xFF; + bits[4] = (context->count[0] >> 24) & 0xFF; + bits[3] = context->count[1] & 0xFF; + bits[2] = (context->count[1] >> 8) & 0xFF; + bits[1] = (context->count[1] >> 16) & 0xFF; + bits[0] = (context->count[1] >> 24) & 0xFF; + + /* Pad out to 56 mod 64. + */ + index = (unsigned int) ((context->count[0] >> 3) & 0x3f); + padLen = (index < 56) ? (56 - index) : (120 - index); + PHP_SHA1Update(context, PADDING, padLen); + + /* Append length (before padding) */ + PHP_SHA1Update(context, bits, 8); + + /* Store state in digest */ + SHA1Encode(digest, context->state, 20); + + /* Zeroize sensitive information. + */ + memset((unsigned char*) context, 0, sizeof(*context)); +} +/* }}} */ + +/* {{{ SHA1Transform + * SHA1 basic transformation. Transforms state based on block. + */ +static void SHA1Transform(state, block) +php_uint32 state[5]; +const unsigned char block[64]; +{ + php_uint32 a = state[0], b = state[1], c = state[2]; + php_uint32 d = state[3], e = state[4], x[16], tmp; + + SHA1Decode(x, block, 64); + + /* Round 1 */ + FF(a, b, c, d, e, x[0]); /* 1 */ + FF(e, a, b, c, d, x[1]); /* 2 */ + FF(d, e, a, b, c, x[2]); /* 3 */ + FF(c, d, e, a, b, x[3]); /* 4 */ + FF(b, c, d, e, a, x[4]); /* 5 */ + FF(a, b, c, d, e, x[5]); /* 6 */ + FF(e, a, b, c, d, x[6]); /* 7 */ + FF(d, e, a, b, c, x[7]); /* 8 */ + FF(c, d, e, a, b, x[8]); /* 9 */ + FF(b, c, d, e, a, x[9]); /* 10 */ + FF(a, b, c, d, e, x[10]); /* 11 */ + FF(e, a, b, c, d, x[11]); /* 12 */ + FF(d, e, a, b, c, x[12]); /* 13 */ + FF(c, d, e, a, b, x[13]); /* 14 */ + FF(b, c, d, e, a, x[14]); /* 15 */ + FF(a, b, c, d, e, x[15]); /* 16 */ + FF(e, a, b, c, d, W(16)); /* 17 */ + FF(d, e, a, b, c, W(17)); /* 18 */ + FF(c, d, e, a, b, W(18)); /* 19 */ + FF(b, c, d, e, a, W(19)); /* 20 */ + + /* Round 2 */ + GG(a, b, c, d, e, W(20)); /* 21 */ + GG(e, a, b, c, d, W(21)); /* 22 */ + GG(d, e, a, b, c, W(22)); /* 23 */ + GG(c, d, e, a, b, W(23)); /* 24 */ + GG(b, c, d, e, a, W(24)); /* 25 */ + GG(a, b, c, d, e, W(25)); /* 26 */ + GG(e, a, b, c, d, W(26)); /* 27 */ + GG(d, e, a, b, c, W(27)); /* 28 */ + GG(c, d, e, a, b, W(28)); /* 29 */ + GG(b, c, d, e, a, W(29)); /* 30 */ + GG(a, b, c, d, e, W(30)); /* 31 */ + GG(e, a, b, c, d, W(31)); /* 32 */ + GG(d, e, a, b, c, W(32)); /* 33 */ + GG(c, d, e, a, b, W(33)); /* 34 */ + GG(b, c, d, e, a, W(34)); /* 35 */ + GG(a, b, c, d, e, W(35)); /* 36 */ + GG(e, a, b, c, d, W(36)); /* 37 */ + GG(d, e, a, b, c, W(37)); /* 38 */ + GG(c, d, e, a, b, W(38)); /* 39 */ + GG(b, c, d, e, a, W(39)); /* 40 */ + + /* Round 3 */ + HH(a, b, c, d, e, W(40)); /* 41 */ + HH(e, a, b, c, d, W(41)); /* 42 */ + HH(d, e, a, b, c, W(42)); /* 43 */ + HH(c, d, e, a, b, W(43)); /* 44 */ + HH(b, c, d, e, a, W(44)); /* 45 */ + HH(a, b, c, d, e, W(45)); /* 46 */ + HH(e, a, b, c, d, W(46)); /* 47 */ + HH(d, e, a, b, c, W(47)); /* 48 */ + HH(c, d, e, a, b, W(48)); /* 49 */ + HH(b, c, d, e, a, W(49)); /* 50 */ + HH(a, b, c, d, e, W(50)); /* 51 */ + HH(e, a, b, c, d, W(51)); /* 52 */ + HH(d, e, a, b, c, W(52)); /* 53 */ + HH(c, d, e, a, b, W(53)); /* 54 */ + HH(b, c, d, e, a, W(54)); /* 55 */ + HH(a, b, c, d, e, W(55)); /* 56 */ + HH(e, a, b, c, d, W(56)); /* 57 */ + HH(d, e, a, b, c, W(57)); /* 58 */ + HH(c, d, e, a, b, W(58)); /* 59 */ + HH(b, c, d, e, a, W(59)); /* 60 */ + + /* Round 4 */ + II(a, b, c, d, e, W(60)); /* 61 */ + II(e, a, b, c, d, W(61)); /* 62 */ + II(d, e, a, b, c, W(62)); /* 63 */ + II(c, d, e, a, b, W(63)); /* 64 */ + II(b, c, d, e, a, W(64)); /* 65 */ + II(a, b, c, d, e, W(65)); /* 66 */ + II(e, a, b, c, d, W(66)); /* 67 */ + II(d, e, a, b, c, W(67)); /* 68 */ + II(c, d, e, a, b, W(68)); /* 69 */ + II(b, c, d, e, a, W(69)); /* 70 */ + II(a, b, c, d, e, W(70)); /* 71 */ + II(e, a, b, c, d, W(71)); /* 72 */ + II(d, e, a, b, c, W(72)); /* 73 */ + II(c, d, e, a, b, W(73)); /* 74 */ + II(b, c, d, e, a, W(74)); /* 75 */ + II(a, b, c, d, e, W(75)); /* 76 */ + II(e, a, b, c, d, W(76)); /* 77 */ + II(d, e, a, b, c, W(77)); /* 78 */ + II(c, d, e, a, b, W(78)); /* 79 */ + II(b, c, d, e, a, W(79)); /* 80 */ + + state[0] += a; + state[1] += b; + state[2] += c; + state[3] += d; + state[4] += e; + + /* Zeroize sensitive information. */ + memset((unsigned char*) x, 0, sizeof(x)); +} +/* }}} */ + +/* {{{ SHA1Encode + Encodes input (php_uint32) into output (unsigned char). Assumes len is + a multiple of 4. + */ +static void SHA1Encode(output, input, len) +unsigned char *output; +php_uint32 *input; +unsigned int len; +{ + unsigned int i, j; + + for (i = 0, j = 0; j < len; i++, j += 4) { + output[j] = (unsigned char) ((input[i] >> 24) & 0xff); + output[j + 1] = (unsigned char) ((input[i] >> 16) & 0xff); + output[j + 2] = (unsigned char) ((input[i] >> 8) & 0xff); + output[j + 3] = (unsigned char) (input[i] & 0xff); + } +} +/* }}} */ + +/* {{{ SHA1Decode + Decodes input (unsigned char) into output (php_uint32). Assumes len is + a multiple of 4. + */ +static void SHA1Decode(output, input, len) +php_uint32 *output; +const unsigned char *input; +unsigned int len; +{ + unsigned int i, j; + + for (i = 0, j = 0; j < len; i++, j += 4) + output[i] = ((php_uint32) input[j + 3]) | (((php_uint32) input[j + 2]) << 8) | + (((php_uint32) input[j + 1]) << 16) | (((php_uint32) input[j]) << 24); +} +/* }}} */ + +/* + * Local variables: + * tab-width: 4 + * c-basic-offset: 4 + * End: + * vim600: sw=4 ts=4 fdm=marker + * vim<600: sw=4 ts=4 + */ |