diff options
author | Henning Baldersheim <balder@yahoo-inc.com> | 2017-01-05 11:42:47 +0000 |
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committer | Henning Baldersheim <balder@yahoo-inc.com> | 2017-01-05 11:47:21 +0000 |
commit | e64406407c4392f2c750d14139e46484309a2ebc (patch) | |
tree | f33d450aae225c4937b8fd7d9b4e9ceb1d5bee9b /vespalib | |
parent | 9a70779d68a5f9ab211d97b69a932a1043052ff6 (diff) |
md5 had to move too.
Diffstat (limited to 'vespalib')
-rw-r--r-- | vespalib/src/vespa/vespalib/util/CMakeLists.txt | 1 | ||||
-rw-r--r-- | vespalib/src/vespa/vespalib/util/md5.c | 323 | ||||
-rw-r--r-- | vespalib/src/vespa/vespalib/util/md5.h | 16 |
3 files changed, 340 insertions, 0 deletions
diff --git a/vespalib/src/vespa/vespalib/util/CMakeLists.txt b/vespalib/src/vespa/vespalib/util/CMakeLists.txt index 6fb3626a3a1..fb6634b13f2 100644 --- a/vespalib/src/vespa/vespalib/util/CMakeLists.txt +++ b/vespalib/src/vespa/vespalib/util/CMakeLists.txt @@ -25,6 +25,7 @@ vespa_add_library(vespalib_vespalib_util OBJECT host_name.cpp joinable.cpp left_right_heap.cpp + md5.c printable.cpp priority_queue.cpp random.cpp diff --git a/vespalib/src/vespa/vespalib/util/md5.c b/vespalib/src/vespa/vespalib/util/md5.c new file mode 100644 index 00000000000..0800b101335 --- /dev/null +++ b/vespalib/src/vespa/vespalib/util/md5.c @@ -0,0 +1,323 @@ +// Copyright 2016 Yahoo Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root. +/* + * + * Generic hash functions to ensure the same hash values are used everywhere. + */ + +/* + * The following copyright notice applies to the code between the + * "--- START OF MD5 CODE ---" and "--- END OF MD5 CODE ---" markers: + * + * MD5C.C - RSA Data Security, Inc., MD5 message-digest algorithm + * + * Copyright (C) 1991-2, RSA Data Security, Inc. Created 1991. All + * rights reserved. + * + * License to copy and use this software is granted provided that it + * is identified as the "RSA Data Security, Inc. MD5 Message-Digest + * Algorithm" in all material mentioning or referencing this software + * or this function. + * + * License is also granted to make and use derivative works provided + * that such works are identified as "derived from the RSA Data + * Security, Inc. MD5 Message-Digest Algorithm" in all material + * mentioning or referencing the derived work. + * + * RSA Data Security, Inc. makes no representations concerning either + * the merchantability of this software or the suitability of this + * software for any particular purpose. It is provided "as is" + * without express or implied warranty of any kind. + * + * These notices must be retained in any copies of any part of this + * documentation and/or software. + * + */ + +#include "md5.h" +#include <string.h> +#include <inttypes.h> + +/* --- START OF MD5 CODE --- */ + +#define S11 7 +#define S12 12 +#define S13 17 +#define S14 22 +#define S21 5 +#define S22 9 +#define S23 14 +#define S24 20 +#define S31 4 +#define S32 11 +#define S33 16 +#define S34 23 +#define S41 6 +#define S42 10 +#define S43 15 +#define S44 21 + +/* MD5 context. */ +typedef struct +{ + uint32_t state[4]; /* state (ABCD) */ + uint32_t count[2]; /* number of bits, modulo 2^64 (lsb first) */ + unsigned char buffer[64]; /* input buffer */ +} MD5_CTX; + +static void MD5Init (MD5_CTX *); +static void MD5Update (MD5_CTX *, const unsigned char *, uint32_t); +static void MD5Final (unsigned char [16], MD5_CTX *); +static void MD5Transform (uint32_t [4], const unsigned char [64]); +static void Encode (unsigned char *, uint32_t *, uint32_t); +static void Decode (uint32_t *, const unsigned char *, uint32_t); + +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 MD5 functions. + */ +#define F(x, y, z) (((x) & (y)) | ((~x) & (z))) +#define G(x, y, z) (((x) & (z)) | ((y) & (~z))) +#define H(x, y, z) ((x) ^ (y) ^ (z)) +#define I(x, y, z) ((y) ^ ((x) | (~z))) + +/* ROTATE_LEFT rotates x left n bits. + */ +#define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32-(n)))) + +/* FF, GG, HH, and II transformations for rounds 1, 2, 3, and 4. +Rotation is separate from addition to prevent recomputation. + */ +#define FF(a, b, c, d, x, s, ac) { \ + (a) += F ((b), (c), (d)) + (x) + (uint32_t)(ac); \ + (a) = ROTATE_LEFT ((a), (s)); \ + (a) += (b); \ +} +#define GG(a, b, c, d, x, s, ac) { \ + (a) += G ((b), (c), (d)) + (x) + (uint32_t)(ac); \ + (a) = ROTATE_LEFT ((a), (s)); \ + (a) += (b); \ +} +#define HH(a, b, c, d, x, s, ac) { \ + (a) += H ((b), (c), (d)) + (x) + (uint32_t)(ac); \ + (a) = ROTATE_LEFT ((a), (s)); \ + (a) += (b); \ +} +#define II(a, b, c, d, x, s, ac) { \ + (a) += I ((b), (c), (d)) + (x) + (uint32_t)(ac); \ + (a) = ROTATE_LEFT ((a), (s)); \ + (a) += (b); \ +} + +/* MD5 initialization. Begins an MD5 operation, writing a new context. + */ +static void +MD5Init (MD5_CTX *context) +{ + context->count[0] = context->count[1] = 0; + /* Load magic initialization constants. + */ + context->state[0] = 0x67452301ul; + context->state[1] = 0xefcdab89ul; + context->state[2] = 0x98badcfeul; + context->state[3] = 0x10325476ul; +} + +/* MD5 block update operation. Continues an MD5 message-digest + operation, processing another message block, and updating the + context. + */ +static void +MD5Update (MD5_CTX *context, const unsigned char *input, uint32_t inputLen) +{ + uint32_t i, idx, partLen; + + /* Compute number of bytes mod 64 */ + idx = (uint32_t)((context->count[0] >> 3) & 0x3F); + + /* Update number of bits */ + if ((context->count[0] += ((uint32_t)inputLen << 3)) < ((uint32_t)inputLen << 3)) { + context->count[1]++; + } + context->count[1] += ((uint32_t)inputLen >> 29); + + partLen = 64 - idx; + + /* Transform as many times as possible. + */ + if (inputLen >= partLen) { + memcpy((unsigned char *)&context->buffer[idx], (const unsigned char *)input, partLen); + MD5Transform(context->state, context->buffer); + + for (i = partLen; i + 63 < inputLen; i += 64) { + MD5Transform (context->state, &input[i]); + } + idx = 0; + } else { + i = 0; + } + + /* Buffer remaining input */ + memcpy((unsigned char *)&context->buffer[idx], (const unsigned char *)&input[i], inputLen-i); +} + +/* MD5 finalization. Ends an MD5 message-digest operation, writing the + the message digest and zeroizing the context. + */ +static void +MD5Final (unsigned char digest[16], MD5_CTX *context) +{ + unsigned char bits[8]; + uint32_t idx, padLen; + + /* Save number of bits */ + Encode (bits, context->count, 8); + + /* Pad out to 56 mod 64. + */ + idx = (uint32_t)((context->count[0] >> 3) & 0x3f); + padLen = (idx < 56) ? (56 - idx) : (120 - idx); + MD5Update (context, PADDING, padLen); + + /* Append length (before padding) */ + MD5Update (context, bits, 8); + /* Store state in digest */ + Encode (digest, context->state, 16); + + /* Zeroize sensitive information. + */ + memset ((unsigned char *)context, 0, sizeof (*context)); +} + +/* MD5 basic transformation. Transforms state based on block. + */ +static void +MD5Transform (uint32_t state[4], const unsigned char dblock[64]) +{ + uint32_t a = state[0], b = state[1], c = state[2], d = state[3], x[16]; + + Decode (x, dblock, 64); + + /* Round 1 */ + FF (a, b, c, d, x[ 0], S11, 0xd76aa478ul); /* 1 */ + FF (d, a, b, c, x[ 1], S12, 0xe8c7b756ul); /* 2 */ + FF (c, d, a, b, x[ 2], S13, 0x242070dbul); /* 3 */ + FF (b, c, d, a, x[ 3], S14, 0xc1bdceeeul); /* 4 */ + FF (a, b, c, d, x[ 4], S11, 0xf57c0faful); /* 5 */ + FF (d, a, b, c, x[ 5], S12, 0x4787c62aul); /* 6 */ + FF (c, d, a, b, x[ 6], S13, 0xa8304613ul); /* 7 */ + FF (b, c, d, a, x[ 7], S14, 0xfd469501ul); /* 8 */ + FF (a, b, c, d, x[ 8], S11, 0x698098d8ul); /* 9 */ + FF (d, a, b, c, x[ 9], S12, 0x8b44f7aful); /* 10 */ + FF (c, d, a, b, x[10], S13, 0xffff5bb1ul); /* 11 */ + FF (b, c, d, a, x[11], S14, 0x895cd7beul); /* 12 */ + FF (a, b, c, d, x[12], S11, 0x6b901122ul); /* 13 */ + FF (d, a, b, c, x[13], S12, 0xfd987193ul); /* 14 */ + FF (c, d, a, b, x[14], S13, 0xa679438eul); /* 15 */ + FF (b, c, d, a, x[15], S14, 0x49b40821ul); /* 16 */ + + /* Round 2 */ + GG (a, b, c, d, x[ 1], S21, 0xf61e2562ul); /* 17 */ + GG (d, a, b, c, x[ 6], S22, 0xc040b340ul); /* 18 */ + GG (c, d, a, b, x[11], S23, 0x265e5a51ul); /* 19 */ + GG (b, c, d, a, x[ 0], S24, 0xe9b6c7aaul); /* 20 */ + GG (a, b, c, d, x[ 5], S21, 0xd62f105dul); /* 21 */ + GG (d, a, b, c, x[10], S22, 0x2441453ul); /* 22 */ + GG (c, d, a, b, x[15], S23, 0xd8a1e681ul); /* 23 */ + GG (b, c, d, a, x[ 4], S24, 0xe7d3fbc8ul); /* 24 */ + GG (a, b, c, d, x[ 9], S21, 0x21e1cde6ul); /* 25 */ + GG (d, a, b, c, x[14], S22, 0xc33707d6ul); /* 26 */ + GG (c, d, a, b, x[ 3], S23, 0xf4d50d87ul); /* 27 */ + GG (b, c, d, a, x[ 8], S24, 0x455a14edul); /* 28 */ + GG (a, b, c, d, x[13], S21, 0xa9e3e905ul); /* 29 */ + GG (d, a, b, c, x[ 2], S22, 0xfcefa3f8ul); /* 30 */ + GG (c, d, a, b, x[ 7], S23, 0x676f02d9ul); /* 31 */ + GG (b, c, d, a, x[12], S24, 0x8d2a4c8aul); /* 32 */ + + /* Round 3 */ + HH (a, b, c, d, x[ 5], S31, 0xfffa3942ul); /* 33 */ + HH (d, a, b, c, x[ 8], S32, 0x8771f681ul); /* 34 */ + HH (c, d, a, b, x[11], S33, 0x6d9d6122ul); /* 35 */ + HH (b, c, d, a, x[14], S34, 0xfde5380cul); /* 36 */ + HH (a, b, c, d, x[ 1], S31, 0xa4beea44ul); /* 37 */ + HH (d, a, b, c, x[ 4], S32, 0x4bdecfa9ul); /* 38 */ + HH (c, d, a, b, x[ 7], S33, 0xf6bb4b60ul); /* 39 */ + HH (b, c, d, a, x[10], S34, 0xbebfbc70ul); /* 40 */ + HH (a, b, c, d, x[13], S31, 0x289b7ec6ul); /* 41 */ + HH (d, a, b, c, x[ 0], S32, 0xeaa127faul); /* 42 */ + HH (c, d, a, b, x[ 3], S33, 0xd4ef3085ul); /* 43 */ + HH (b, c, d, a, x[ 6], S34, 0x4881d05ul); /* 44 */ + HH (a, b, c, d, x[ 9], S31, 0xd9d4d039ul); /* 45 */ + HH (d, a, b, c, x[12], S32, 0xe6db99e5ul); /* 46 */ + HH (c, d, a, b, x[15], S33, 0x1fa27cf8ul); /* 47 */ + HH (b, c, d, a, x[ 2], S34, 0xc4ac5665ul); /* 48 */ + + /* Round 4 */ + II (a, b, c, d, x[ 0], S41, 0xf4292244ul); /* 49 */ + II (d, a, b, c, x[ 7], S42, 0x432aff97ul); /* 50 */ + II (c, d, a, b, x[14], S43, 0xab9423a7ul); /* 51 */ + II (b, c, d, a, x[ 5], S44, 0xfc93a039ul); /* 52 */ + II (a, b, c, d, x[12], S41, 0x655b59c3ul); /* 53 */ + II (d, a, b, c, x[ 3], S42, 0x8f0ccc92ul); /* 54 */ + II (c, d, a, b, x[10], S43, 0xffeff47dul); /* 55 */ + II (b, c, d, a, x[ 1], S44, 0x85845dd1ul); /* 56 */ + II (a, b, c, d, x[ 8], S41, 0x6fa87e4ful); /* 57 */ + II (d, a, b, c, x[15], S42, 0xfe2ce6e0ul); /* 58 */ + II (c, d, a, b, x[ 6], S43, 0xa3014314ul); /* 59 */ + II (b, c, d, a, x[13], S44, 0x4e0811a1ul); /* 60 */ + II (a, b, c, d, x[ 4], S41, 0xf7537e82ul); /* 61 */ + II (d, a, b, c, x[11], S42, 0xbd3af235ul); /* 62 */ + II (c, d, a, b, x[ 2], S43, 0x2ad7d2bbul); /* 63 */ + II (b, c, d, a, x[ 9], S44, 0xeb86d391ul); /* 64 */ + + state[0] += a; + state[1] += b; + state[2] += c; + state[3] += d; + + /* Zeroize sensitive information. + */ + memset((unsigned char *)x, 0, sizeof (x)); +} + +static void +Encode (unsigned char *output, uint32_t *input, uint32_t len) +{ + uint32_t i, j; + + for (i = 0, j = 0; j < len; i++, j += 4) { + output[j] = (unsigned char)(input[i] & 0xff); + output[j+1] = (unsigned char)((input[i] >> 8) & 0xff); + output[j+2] = (unsigned char)((input[i] >> 16) & 0xff); + output[j+3] = (unsigned char)((input[i] >> 24) & 0xff); + } +} + +/* Decodes input (unsigned char) into output (uint32_t). Assumes len is + a multiple of 4. + */ + +static void +Decode (uint32_t *output, const unsigned char *input, uint32_t len) +{ + uint32_t i, j; + + for (i = 0, j = 0; j < len; i++, j += 4) + output[i] = ((uint32_t)input[j]) | (((uint32_t)input[j+1]) << 8) | + (((uint32_t)input[j+2]) << 16) | (((uint32_t)input[j+3]) << 24); +} + + +/* --- END OF MD5 CODE --- */ + +void fastc_md5sum(const void *s, size_t len, unsigned char *key) +{ + MD5_CTX m5; + MD5Init(&m5); + MD5Update(&m5, (const unsigned char *)s, len); + MD5Final(key, &m5); +} + diff --git a/vespalib/src/vespa/vespalib/util/md5.h b/vespalib/src/vespa/vespalib/util/md5.h new file mode 100644 index 00000000000..e9a3acc0668 --- /dev/null +++ b/vespalib/src/vespa/vespalib/util/md5.h @@ -0,0 +1,16 @@ +// Copyright 2016 Yahoo Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root. + +#pragma once + +#include <stddef.h> + +/* Returns pointer to a key in compacted format, ie 16 unsigned chars */ + +#ifdef __cplusplus +extern "C" { +void fastc_md5sum(const void *s, size_t len, unsigned char *key); +} +#else +void fastc_md5sum(const void *s, size_t len, unsigned char *key); +#endif + |