diff options
Diffstat (limited to 'tinySAK/src/tsk_md5.c')
| -rwxr-xr-x | tinySAK/src/tsk_md5.c | 55 |
1 files changed, 28 insertions, 27 deletions
diff --git a/tinySAK/src/tsk_md5.c b/tinySAK/src/tsk_md5.c index d7b0251..cdbf14a 100755 --- a/tinySAK/src/tsk_md5.c +++ b/tinySAK/src/tsk_md5.c @@ -2,19 +2,19 @@ * Copyright (C) 2010-2011 Mamadou Diop. * * Contact: Mamadou Diop <diopmamadou(at)doubango[dot]org> -* +* * This file is part of Open Source Doubango Framework. * * DOUBANGO is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. -* +* * DOUBANGO is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. -* +* * You should have received a copy of the GNU General Public License * along with DOUBANGO. * @@ -35,7 +35,7 @@ #include <string.h> /**@defgroup tsk_md5_group MD5 (RFC 1321) utility functions. - * The code in this file is a modified version of an implementation placed in the public domain by the following persons: + * The code in this file is a modified version of an implementation placed in the public domain by the following persons: * @author Colin Plumb * @author Mamadou Diop <diopmamadou(at)doubango[dot]org> */ @@ -47,7 +47,7 @@ void tsk_byteReverse(uint32_t *buf, unsigned words) { uint8_t *p = (uint8_t *)buf; - do{ + do { *buf++ = (uint32_t)((unsigned)p[3] << 8 | p[2]) << 16 | ((unsigned)p[1] << 8 | p[0]); p += 4; @@ -84,12 +84,12 @@ void tsk_md5update(tsk_md5context_t *ctx, uint8_t const *buf, tsk_size_t len) /* Update byte count */ t = ctx->bytes[0]; - if ((ctx->bytes[0] = t + (uint32_t)len) < t) - ctx->bytes[1]++; /* Carry from low to high */ + if ((ctx->bytes[0] = t + (uint32_t)len) < t) { + ctx->bytes[1]++; /* Carry from low to high */ + } t = 64 - (t & 0x3f); /* Space available in ctx->in (at least 1) */ - if (t > len) - { + if (t > len) { memcpy((uint8_t *)ctx->in + 64 - t, buf, len); return ; } @@ -101,8 +101,7 @@ void tsk_md5update(tsk_md5context_t *ctx, uint8_t const *buf, tsk_size_t len) len -= t; /* Process data in 64-byte chunks */ - while (len >= 64) - { + while (len >= 64) { memcpy(ctx->in, buf, 64); tsk_byteReverse(ctx->in, 16); tsk_md5transform(ctx->buf, ctx->in); @@ -115,7 +114,7 @@ void tsk_md5update(tsk_md5context_t *ctx, uint8_t const *buf, tsk_size_t len) } /**@ingroup tsk_md5_group - * Final wrapup - pad to 64-byte boundary with the bit pattern + * Final wrapup - pad to 64-byte boundary with the bit pattern * 1 0* (64-bit count of bits processed, MSB-first) */ void tsk_md5final(tsk_md5digest_t digest, tsk_md5context_t *ctx) @@ -129,8 +128,8 @@ void tsk_md5final(tsk_md5digest_t digest, tsk_md5context_t *ctx) /* Bytes of padding needed to make 56 bytes (-8..55) */ count = 56 - 1 - count; - if (count < 0) - { /* Padding forces an extra block */ + if (count < 0) { + /* Padding forces an extra block */ memset(p, 0, count + 8); tsk_byteReverse(ctx->in, 16); tsk_md5transform(ctx->buf, ctx->in); @@ -253,24 +252,26 @@ void tsk_md5transform(uint32_t buf[4], uint32_t const in[TSK_MD5_DIGEST_SIZE]) /**@ingroup tsk_md5_group * - * @brief Calculate MD5 HASH for @a input data. + * @brief Calculate MD5 HASH for @a input data. * - * @param input The input data. - * @param size The size of the input data. - * @param result MD5 hash result as Hexadecimal string. + * @param input The input data. + * @param size The size of the input data. + * @param result MD5 hash result as Hexadecimal string. * - * @return Zero if succeed and non-zero error code otherwise. + * @return Zero if succeed and non-zero error code otherwise. **/ int tsk_md5compute(const char* input, tsk_size_t size, tsk_md5string_t *result) { - tsk_md5digest_t digest; + tsk_md5digest_t digest; + + if(!result | !*result) { + return -1; + } + + (*result)[TSK_MD5_STRING_SIZE] = '\0'; - if(!result | !*result) return -1; - - (*result)[TSK_MD5_STRING_SIZE] = '\0'; - - TSK_MD5_DIGEST_CALC(input, size, digest); - tsk_str_from_hex(digest, TSK_MD5_DIGEST_SIZE, *result); + TSK_MD5_DIGEST_CALC(input, size, digest); + tsk_str_from_hex(digest, TSK_MD5_DIGEST_SIZE, *result); - return 0; + return 0; } |
