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Diffstat (limited to 'shared/ossp_uuid/uuid_md5.c')
| -rw-r--r-- | shared/ossp_uuid/uuid_md5.c | 471 |
1 files changed, 471 insertions, 0 deletions
diff --git a/shared/ossp_uuid/uuid_md5.c b/shared/ossp_uuid/uuid_md5.c new file mode 100644 index 00000000..04c6c6a2 --- /dev/null +++ b/shared/ossp_uuid/uuid_md5.c @@ -0,0 +1,471 @@ +/* +** OSSP uuid - Universally Unique Identifier +** Copyright (c) 2004-2008 Ralf S. Engelschall <rse@engelschall.com> +** Copyright (c) 2004-2008 The OSSP Project <http://www.ossp.org/> +** +** This file is part of OSSP uuid, a library for the generation +** of UUIDs which can found at http://www.ossp.org/pkg/lib/uuid/ +** +** Permission to use, copy, modify, and distribute this software for +** any purpose with or without fee is hereby granted, provided that +** the above copyright notice and this permission notice appear in all +** copies. +** +** THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED +** WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF +** MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. +** IN NO EVENT SHALL THE AUTHORS AND COPYRIGHT HOLDERS AND THEIR +** CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +** USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND +** ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, +** OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT +** OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +** SUCH DAMAGE. +** +** uuid_md5.c: MD5 API implementation +*/ + +/* own headers (part 1/2) */ +#include "uuid_ac.h" + +/* system headers */ +#include <stdlib.h> +#include <string.h> + +/* own headers (part 2/2) */ +#include "uuid_md5.h" + +/* + * This is a RFC 1321 compliant Message Digest 5 (MD5) algorithm + * implementation. It is directly derived from the RSA code published in + * RFC 1321 with just the following functionality preserving changes: + * - converted function definitions from K&R to ANSI C + * - included contents of the "global.h" and "md5.h" headers + * - moved the SXX defines into the MD5Transform function + * - replaced MD5_memcpy() with memcpy(3) and MD5_memset() with memset(3) + * - renamed "index" variables to "idx" to avoid namespace conflicts + * - reformatted C style to conform with OSSP C style + * - added own OSSP style frontend API + */ + +/* +** ==== BEGIN RFC 1321 CODE ==== +*/ + +/* + * 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. + */ + +/* POINTER defines a generic pointer type */ +typedef unsigned char *POINTER; + +/* UINT4 defines a four byte word */ +#if SIZEOF_UNSIGNED_SHORT == 4 +typedef unsigned short int UINT4; +#elif SIZEOF_UNSIGNED_INT == 4 +typedef unsigned int UINT4; +#elif SIZEOF_UNSIGNED_LONG == 4 +typedef unsigned long int UINT4; +#elif SIZEOF_UNSIGNED_LONG_LONG == 4 +typedef unsigned long long int UINT4; +#else +#error ERROR: unable to determine UINT4 type (four byte word) +#endif + +/* MD5 context. */ +typedef struct { + UINT4 state[4]; /* state (ABCD) */ + UINT4 count[2]; /* number of bits, modulo 2^64 (lsb first) */ + unsigned char buffer[64]; /* input buffer */ +} MD5_CTX; + +/* prototypes for internal functions */ +static void MD5Init (MD5_CTX *_ctx); +static void MD5Update (MD5_CTX *_ctx, unsigned char *, unsigned int); +static void MD5Final (unsigned char [], MD5_CTX *); +static void MD5Transform (UINT4 [], unsigned char []); +static void Encode (unsigned char *, UINT4 *, unsigned int); +static void Decode (UINT4 *, unsigned char *, unsigned int); + +/* finalization padding */ +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) + (UINT4)(ac); \ + (a) = ROTATE_LEFT ((a), (s)); \ + (a) += (b); \ +} +#define GG(a, b, c, d, x, s, ac) { \ + (a) += G ((b), (c), (d)) + (x) + (UINT4)(ac); \ + (a) = ROTATE_LEFT ((a), (s)); \ + (a) += (b); \ +} +#define HH(a, b, c, d, x, s, ac) { \ + (a) += H ((b), (c), (d)) + (x) + (UINT4)(ac); \ + (a) = ROTATE_LEFT ((a), (s)); \ + (a) += (b); \ +} +#define II(a, b, c, d, x, s, ac) { \ + (a) += I ((b), (c), (d)) + (x) + (UINT4)(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] = 0x67452301; + context->state[1] = 0xefcdab89; + context->state[2] = 0x98badcfe; + context->state[3] = 0x10325476; + return; +} + +/* MD5 block update operation. Continues an MD5 message-digest + operation, processing another message block, and updating the + context. */ +static void MD5Update( + MD5_CTX *context, /* context */ + unsigned char *input, /* input block */ + unsigned int inputLen) /* length of input block */ +{ + unsigned int i, idx, partLen; + + /* Compute number of bytes mod 64 */ + idx = (unsigned int)((context->count[0] >> 3) & 0x3F); + + /* Update number of bits */ + if ((context->count[0] += ((UINT4)inputLen << 3)) < ((UINT4)inputLen << 3)) + context->count[1]++; + context->count[1] += ((UINT4)inputLen >> 29); + + partLen = (unsigned int)64 - idx; + + /* Transform as many times as possible. */ + if (inputLen >= partLen) { + memcpy((POINTER)&context->buffer[idx], (POINTER)input, (size_t)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((POINTER)&context->buffer[idx], (POINTER)&input[i], (size_t)(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[], /* message digest */ + MD5_CTX *context) /* context */ +{ + unsigned char bits[8]; + unsigned int idx, padLen; + + /* Save number of bits */ + Encode(bits, context->count, 8); + + /* Pad out to 56 mod 64. */ + idx = (unsigned int)((context->count[0] >> 3) & 0x3f); + padLen = (idx < 56) ? ((unsigned int)56 - idx) : ((unsigned int)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((POINTER)context, 0, sizeof(*context)); +} + +/* MD5 basic transformation. Transforms state based on block. */ +static void MD5Transform( + UINT4 state[], + unsigned char block[]) +{ + UINT4 a = state[0], b = state[1], c = state[2], d = state[3], x[16]; + + Decode(x, block, 64); + + /* Round 1 */ +#define S11 7 +#define S12 12 +#define S13 17 +#define S14 22 + FF (a, b, c, d, x[ 0], S11, 0xd76aa478); /* 1 */ + FF (d, a, b, c, x[ 1], S12, 0xe8c7b756); /* 2 */ + FF (c, d, a, b, x[ 2], S13, 0x242070db); /* 3 */ + FF (b, c, d, a, x[ 3], S14, 0xc1bdceee); /* 4 */ + FF (a, b, c, d, x[ 4], S11, 0xf57c0faf); /* 5 */ + FF (d, a, b, c, x[ 5], S12, 0x4787c62a); /* 6 */ + FF (c, d, a, b, x[ 6], S13, 0xa8304613); /* 7 */ + FF (b, c, d, a, x[ 7], S14, 0xfd469501); /* 8 */ + FF (a, b, c, d, x[ 8], S11, 0x698098d8); /* 9 */ + FF (d, a, b, c, x[ 9], S12, 0x8b44f7af); /* 10 */ + FF (c, d, a, b, x[10], S13, 0xffff5bb1); /* 11 */ + FF (b, c, d, a, x[11], S14, 0x895cd7be); /* 12 */ + FF (a, b, c, d, x[12], S11, 0x6b901122); /* 13 */ + FF (d, a, b, c, x[13], S12, 0xfd987193); /* 14 */ + FF (c, d, a, b, x[14], S13, 0xa679438e); /* 15 */ + FF (b, c, d, a, x[15], S14, 0x49b40821); /* 16 */ + + /* Round 2 */ +#define S21 5 +#define S22 9 +#define S23 14 +#define S24 20 + GG (a, b, c, d, x[ 1], S21, 0xf61e2562); /* 17 */ + GG (d, a, b, c, x[ 6], S22, 0xc040b340); /* 18 */ + GG (c, d, a, b, x[11], S23, 0x265e5a51); /* 19 */ + GG (b, c, d, a, x[ 0], S24, 0xe9b6c7aa); /* 20 */ + GG (a, b, c, d, x[ 5], S21, 0xd62f105d); /* 21 */ + GG (d, a, b, c, x[10], S22, 0x2441453); /* 22 */ + GG (c, d, a, b, x[15], S23, 0xd8a1e681); /* 23 */ + GG (b, c, d, a, x[ 4], S24, 0xe7d3fbc8); /* 24 */ + GG (a, b, c, d, x[ 9], S21, 0x21e1cde6); /* 25 */ + GG (d, a, b, c, x[14], S22, 0xc33707d6); /* 26 */ + GG (c, d, a, b, x[ 3], S23, 0xf4d50d87); /* 27 */ + GG (b, c, d, a, x[ 8], S24, 0x455a14ed); /* 28 */ + GG (a, b, c, d, x[13], S21, 0xa9e3e905); /* 29 */ + GG (d, a, b, c, x[ 2], S22, 0xfcefa3f8); /* 30 */ + GG (c, d, a, b, x[ 7], S23, 0x676f02d9); /* 31 */ + GG (b, c, d, a, x[12], S24, 0x8d2a4c8a); /* 32 */ + + /* Round 3 */ +#define S31 4 +#define S32 11 +#define S33 16 +#define S34 23 + HH (a, b, c, d, x[ 5], S31, 0xfffa3942); /* 33 */ + HH (d, a, b, c, x[ 8], S32, 0x8771f681); /* 34 */ + HH (c, d, a, b, x[11], S33, 0x6d9d6122); /* 35 */ + HH (b, c, d, a, x[14], S34, 0xfde5380c); /* 36 */ + HH (a, b, c, d, x[ 1], S31, 0xa4beea44); /* 37 */ + HH (d, a, b, c, x[ 4], S32, 0x4bdecfa9); /* 38 */ + HH (c, d, a, b, x[ 7], S33, 0xf6bb4b60); /* 39 */ + HH (b, c, d, a, x[10], S34, 0xbebfbc70); /* 40 */ + HH (a, b, c, d, x[13], S31, 0x289b7ec6); /* 41 */ + HH (d, a, b, c, x[ 0], S32, 0xeaa127fa); /* 42 */ + HH (c, d, a, b, x[ 3], S33, 0xd4ef3085); /* 43 */ + HH (b, c, d, a, x[ 6], S34, 0x4881d05); /* 44 */ + HH (a, b, c, d, x[ 9], S31, 0xd9d4d039); /* 45 */ + HH (d, a, b, c, x[12], S32, 0xe6db99e5); /* 46 */ + HH (c, d, a, b, x[15], S33, 0x1fa27cf8); /* 47 */ + HH (b, c, d, a, x[ 2], S34, 0xc4ac5665); /* 48 */ + + /* Round 4 */ +#define S41 6 +#define S42 10 +#define S43 15 +#define S44 21 + II (a, b, c, d, x[ 0], S41, 0xf4292244); /* 49 */ + II (d, a, b, c, x[ 7], S42, 0x432aff97); /* 50 */ + II (c, d, a, b, x[14], S43, 0xab9423a7); /* 51 */ + II (b, c, d, a, x[ 5], S44, 0xfc93a039); /* 52 */ + II (a, b, c, d, x[12], S41, 0x655b59c3); /* 53 */ + II (d, a, b, c, x[ 3], S42, 0x8f0ccc92); /* 54 */ + II (c, d, a, b, x[10], S43, 0xffeff47d); /* 55 */ + II (b, c, d, a, x[ 1], S44, 0x85845dd1); /* 56 */ + II (a, b, c, d, x[ 8], S41, 0x6fa87e4f); /* 57 */ + II (d, a, b, c, x[15], S42, 0xfe2ce6e0); /* 58 */ + II (c, d, a, b, x[ 6], S43, 0xa3014314); /* 59 */ + II (b, c, d, a, x[13], S44, 0x4e0811a1); /* 60 */ + II (a, b, c, d, x[ 4], S41, 0xf7537e82); /* 61 */ + II (d, a, b, c, x[11], S42, 0xbd3af235); /* 62 */ + II (c, d, a, b, x[ 2], S43, 0x2ad7d2bb); /* 63 */ + II (b, c, d, a, x[ 9], S44, 0xeb86d391); /* 64 */ + + state[0] += a; + state[1] += b; + state[2] += c; + state[3] += d; + + /* Zeroize sensitive information. */ + memset((POINTER)x, 0, sizeof(x)); +} + +/* Encodes input (UINT4) into output (unsigned char). + Assumes len is a multiple of 4. */ +static void Encode( + unsigned char *output, + UINT4 *input, + unsigned int len) +{ + unsigned int 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); + } + return; +} + +/* Decodes input (unsigned char) into output (UINT4). + Assumes len is a multiple of 4. */ +static void Decode( + UINT4 *output, + unsigned char *input, + unsigned int len) +{ + unsigned int i, j; + + for (i = 0, j = 0; j < len; i++, j += 4) + output[i] = ( (UINT4)input[j]) + | (((UINT4)input[j+1]) << 8 ) + | (((UINT4)input[j+2]) << 16) + | (((UINT4)input[j+3]) << 24); + return; +} + +/* +** ==== END RFC 1321 CODE ==== +*/ + +struct md5_st { + MD5_CTX ctx; +}; + +md5_rc_t md5_create(md5_t **md5) +{ + if (md5 == NULL) + return MD5_RC_ARG; + if ((*md5 = (md5_t *)malloc(sizeof(md5_t))) == NULL) + return MD5_RC_MEM; + MD5Init(&((*md5)->ctx)); + return MD5_RC_OK; +} + +md5_rc_t md5_init(md5_t *md5) +{ + if (md5 == NULL) + return MD5_RC_ARG; + MD5Init(&(md5->ctx)); + return MD5_RC_OK; +} + +md5_rc_t md5_update(md5_t *md5, const void *data_ptr, size_t data_len) +{ + if (md5 == NULL) + return MD5_RC_ARG; + MD5Update(&(md5->ctx), (unsigned char *)data_ptr, (unsigned int)data_len); + return MD5_RC_OK; +} + +md5_rc_t md5_store(md5_t *md5, void **data_ptr, size_t *data_len) +{ + MD5_CTX ctx; + + if (md5 == NULL || data_ptr == NULL) + return MD5_RC_ARG; + if (*data_ptr == NULL) { + if ((*data_ptr = malloc(MD5_LEN_BIN)) == NULL) + return MD5_RC_MEM; + if (data_len != NULL) + *data_len = MD5_LEN_BIN; + } + else { + if (data_len != NULL) { + if (*data_len < MD5_LEN_BIN) + return MD5_RC_MEM; + *data_len = MD5_LEN_BIN; + } + } + memcpy((void *)(&ctx), (void *)(&(md5->ctx)), sizeof(MD5_CTX)); + MD5Final((unsigned char *)(*data_ptr), &(ctx)); + return MD5_RC_OK; +} + +md5_rc_t md5_format(md5_t *md5, char **data_ptr, size_t *data_len) +{ + static const char hex[] = "0123456789abcdef"; + unsigned char buf[MD5_LEN_BIN]; + unsigned char *bufptr; + size_t buflen; + md5_rc_t rc; + int i; + + if (md5 == NULL || data_ptr == NULL) + return MD5_RC_ARG; + if (*data_ptr == NULL) { + if ((*data_ptr = (char *)malloc(MD5_LEN_STR+1)) == NULL) + return MD5_RC_MEM; + if (data_len != NULL) + *data_len = MD5_LEN_STR+1; + } + else { + if (data_len != NULL) { + if (*data_len < MD5_LEN_STR+1) + return MD5_RC_MEM; + *data_len = MD5_LEN_STR+1; + } + } + + bufptr = buf; + buflen = sizeof(buf); + if ((rc = md5_store(md5, (void **)((void *)&bufptr), &buflen)) != MD5_RC_OK) + return rc; + + for (i = 0; i < (int)buflen; i++) { + (*data_ptr)[(i*2)+0] = hex[(int)(bufptr[i] >> 4)]; + (*data_ptr)[(i*2)+1] = hex[(int)(bufptr[i] & 0x0f)]; + } + (*data_ptr)[(i*2)] = '\0'; + return MD5_RC_OK; +} + +md5_rc_t md5_destroy(md5_t *md5) +{ + if (md5 == NULL) + return MD5_RC_ARG; + free(md5); + return MD5_RC_OK; +} + |