mirror of https://github.com/kiwix/kiwix-tools.git
kelson42
15 years ago
parent
653257cb1f
commit
9a9c9baf94
@ -0,0 +1,340 @@
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/* MD5C.C - RSA Data Security, Inc., MD5 message-digest algorithm
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*/
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/* Copyright (C) 1991-2, RSA Data Security, Inc. Created 1991. All
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rights reserved.
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License to copy and use this software is granted provided that it
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is identified as the "RSA Data Security, Inc. MD5 Message-Digest
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Algorithm" in all material mentioning or referencing this software
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or this function.
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License is also granted to make and use derivative works provided
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that such works are identified as "derived from the RSA Data
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Security, Inc. MD5 Message-Digest Algorithm" in all material
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mentioning or referencing the derived work.
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RSA Data Security, Inc. makes no representations concerning either
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the merchantability of this software or the suitability of this
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software for any particular purpose. It is provided "as is"
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without express or implied warranty of any kind.
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These notices must be retained in any copies of any part of this
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documentation and/or software.
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*/
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#include "md5.h"
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#include <string.h>
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#define MD5_CTX zim_MD5_CTX
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/* Constants for MD5Transform routine.
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*/
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#define S11 7
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#define S12 12
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#define S13 17
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#define S14 22
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#define S21 5
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#define S22 9
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#define S23 14
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#define S24 20
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#define S31 4
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#define S32 11
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#define S33 16
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#define S34 23
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#define S41 6
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#define S42 10
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#define S43 15
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#define S44 21
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static void MD5Transform PROTO_LIST ((UINT4 [4], const unsigned char [64]));
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static void Encode PROTO_LIST
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((unsigned char *, UINT4 *, unsigned int));
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static void Decode PROTO_LIST
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((UINT4 *, const unsigned char *, unsigned int));
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/*
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static void MD5_memcpy PROTO_LIST ((POINTER, POINTER, unsigned int));
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static void MD5_memset PROTO_LIST ((POINTER, int, unsigned int));
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*/
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#define MD5_memcpy memcpy
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#define MD5_memset memset
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static unsigned char PADDING[64] = {
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0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
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};
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/* F, G, H and I are basic MD5 functions.
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*/
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#define F(x, y, z) (((x) & (y)) | ((~x) & (z)))
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#define G(x, y, z) (((x) & (z)) | ((y) & (~z)))
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#define H(x, y, z) ((x) ^ (y) ^ (z))
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#define I(x, y, z) ((y) ^ ((x) | (~z)))
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/* ROTATE_LEFT rotates x left n bits.
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*/
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#define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32-(n))))
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/* FF, GG, HH, and II transformations for rounds 1, 2, 3, and 4.
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Rotation is separate from addition to prevent recomputation.
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*/
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#define FF(a, b, c, d, x, s, ac) { \
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(a) += F ((b), (c), (d)) + (x) + (UINT4)(ac); \
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(a) = ROTATE_LEFT ((a), (s)); \
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(a) += (b); \
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}
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#define GG(a, b, c, d, x, s, ac) { \
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(a) += G ((b), (c), (d)) + (x) + (UINT4)(ac); \
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(a) = ROTATE_LEFT ((a), (s)); \
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(a) += (b); \
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}
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#define HH(a, b, c, d, x, s, ac) { \
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(a) += H ((b), (c), (d)) + (x) + (UINT4)(ac); \
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(a) = ROTATE_LEFT ((a), (s)); \
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(a) += (b); \
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}
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#define II(a, b, c, d, x, s, ac) { \
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(a) += I ((b), (c), (d)) + (x) + (UINT4)(ac); \
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(a) = ROTATE_LEFT ((a), (s)); \
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(a) += (b); \
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}
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/* MD5 initialization. Begins an MD5 operation, writing a new context.
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*/
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void zim_MD5Init (MD5_CTX* context)
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{
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context->count[0] = context->count[1] = 0;
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/* Load magic initialization constants.
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*/
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context->state[0] = 0x67452301;
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context->state[1] = 0xefcdab89;
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context->state[2] = 0x98badcfe;
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context->state[3] = 0x10325476;
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}
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/* MD5 block update operation. Continues an MD5 message-digest
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operation, processing another message block, and updating the
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context.
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*/
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void zim_MD5Update (
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MD5_CTX *context,
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const unsigned char *input, /* input block */
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unsigned int inputLen) /* length of input block */
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{
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unsigned int i, index, partLen;
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/* Compute number of bytes mod 64 */
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index = (unsigned int)((context->count[0] >> 3) & 0x3F);
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/* Update number of bits */
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if ((context->count[0] += ((UINT4)inputLen << 3))
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< ((UINT4)inputLen << 3))
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context->count[1]++;
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context->count[1] += ((UINT4)inputLen >> 29);
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partLen = 64 - index;
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/* Transform as many times as possible.
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*/
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if (inputLen >= partLen) {
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MD5_memcpy
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((POINTER)&context->buffer[index], (POINTER)input, partLen);
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MD5Transform (context->state, context->buffer);
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for (i = partLen; i + 63 < inputLen; i += 64)
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MD5Transform (context->state, &input[i]);
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index = 0;
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}
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else
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i = 0;
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/* Buffer remaining input */
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MD5_memcpy
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((POINTER)&context->buffer[index], (POINTER)&input[i],
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inputLen-i);
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}
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/* MD5 finalization. Ends an MD5 message-digest operation, writing the
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the message digest and zeroizing the context.
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*/
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void zim_MD5Final (
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unsigned char digest[16], /* message digest */
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MD5_CTX *context) /* context */
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{
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unsigned char bits[8];
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unsigned int index, padLen;
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/* Save number of bits */
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Encode (bits, context->count, 8);
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/* Pad out to 56 mod 64.
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*/
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index = (unsigned int)((context->count[0] >> 3) & 0x3f);
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padLen = (index < 56) ? (56 - index) : (120 - index);
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zim_MD5Update (context, PADDING, padLen);
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/* Append length (before padding) */
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zim_MD5Update (context, bits, 8);
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/* Store state in digest */
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Encode (digest, context->state, 16);
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/* Zeroize sensitive information.
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*/
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MD5_memset ((POINTER)context, 0, sizeof (*context));
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}
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/* MD5 basic transformation. Transforms state based on block.
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*/
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static void MD5Transform (
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UINT4 state[4],
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const unsigned char block[64])
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{
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UINT4 a = state[0], b = state[1], c = state[2], d = state[3], x[16];
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Decode (x, block, 64);
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/* Round 1 */
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FF (a, b, c, d, x[ 0], S11, 0xd76aa478); /* 1 */
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FF (d, a, b, c, x[ 1], S12, 0xe8c7b756); /* 2 */
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FF (c, d, a, b, x[ 2], S13, 0x242070db); /* 3 */
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FF (b, c, d, a, x[ 3], S14, 0xc1bdceee); /* 4 */
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FF (a, b, c, d, x[ 4], S11, 0xf57c0faf); /* 5 */
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FF (d, a, b, c, x[ 5], S12, 0x4787c62a); /* 6 */
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FF (c, d, a, b, x[ 6], S13, 0xa8304613); /* 7 */
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FF (b, c, d, a, x[ 7], S14, 0xfd469501); /* 8 */
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FF (a, b, c, d, x[ 8], S11, 0x698098d8); /* 9 */
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FF (d, a, b, c, x[ 9], S12, 0x8b44f7af); /* 10 */
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FF (c, d, a, b, x[10], S13, 0xffff5bb1); /* 11 */
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FF (b, c, d, a, x[11], S14, 0x895cd7be); /* 12 */
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FF (a, b, c, d, x[12], S11, 0x6b901122); /* 13 */
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FF (d, a, b, c, x[13], S12, 0xfd987193); /* 14 */
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FF (c, d, a, b, x[14], S13, 0xa679438e); /* 15 */
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FF (b, c, d, a, x[15], S14, 0x49b40821); /* 16 */
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/* Round 2 */
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GG (a, b, c, d, x[ 1], S21, 0xf61e2562); /* 17 */
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GG (d, a, b, c, x[ 6], S22, 0xc040b340); /* 18 */
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GG (c, d, a, b, x[11], S23, 0x265e5a51); /* 19 */
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GG (b, c, d, a, x[ 0], S24, 0xe9b6c7aa); /* 20 */
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GG (a, b, c, d, x[ 5], S21, 0xd62f105d); /* 21 */
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GG (d, a, b, c, x[10], S22, 0x2441453); /* 22 */
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GG (c, d, a, b, x[15], S23, 0xd8a1e681); /* 23 */
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GG (b, c, d, a, x[ 4], S24, 0xe7d3fbc8); /* 24 */
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GG (a, b, c, d, x[ 9], S21, 0x21e1cde6); /* 25 */
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GG (d, a, b, c, x[14], S22, 0xc33707d6); /* 26 */
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GG (c, d, a, b, x[ 3], S23, 0xf4d50d87); /* 27 */
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GG (b, c, d, a, x[ 8], S24, 0x455a14ed); /* 28 */
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GG (a, b, c, d, x[13], S21, 0xa9e3e905); /* 29 */
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GG (d, a, b, c, x[ 2], S22, 0xfcefa3f8); /* 30 */
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GG (c, d, a, b, x[ 7], S23, 0x676f02d9); /* 31 */
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GG (b, c, d, a, x[12], S24, 0x8d2a4c8a); /* 32 */
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/* Round 3 */
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HH (a, b, c, d, x[ 5], S31, 0xfffa3942); /* 33 */
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HH (d, a, b, c, x[ 8], S32, 0x8771f681); /* 34 */
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HH (c, d, a, b, x[11], S33, 0x6d9d6122); /* 35 */
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HH (b, c, d, a, x[14], S34, 0xfde5380c); /* 36 */
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HH (a, b, c, d, x[ 1], S31, 0xa4beea44); /* 37 */
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HH (d, a, b, c, x[ 4], S32, 0x4bdecfa9); /* 38 */
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HH (c, d, a, b, x[ 7], S33, 0xf6bb4b60); /* 39 */
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HH (b, c, d, a, x[10], S34, 0xbebfbc70); /* 40 */
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HH (a, b, c, d, x[13], S31, 0x289b7ec6); /* 41 */
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HH (d, a, b, c, x[ 0], S32, 0xeaa127fa); /* 42 */
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HH (c, d, a, b, x[ 3], S33, 0xd4ef3085); /* 43 */
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HH (b, c, d, a, x[ 6], S34, 0x4881d05); /* 44 */
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HH (a, b, c, d, x[ 9], S31, 0xd9d4d039); /* 45 */
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HH (d, a, b, c, x[12], S32, 0xe6db99e5); /* 46 */
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HH (c, d, a, b, x[15], S33, 0x1fa27cf8); /* 47 */
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HH (b, c, d, a, x[ 2], S34, 0xc4ac5665); /* 48 */
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/* Round 4 */
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II (a, b, c, d, x[ 0], S41, 0xf4292244); /* 49 */
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II (d, a, b, c, x[ 7], S42, 0x432aff97); /* 50 */
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II (c, d, a, b, x[14], S43, 0xab9423a7); /* 51 */
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II (b, c, d, a, x[ 5], S44, 0xfc93a039); /* 52 */
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II (a, b, c, d, x[12], S41, 0x655b59c3); /* 53 */
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II (d, a, b, c, x[ 3], S42, 0x8f0ccc92); /* 54 */
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II (c, d, a, b, x[10], S43, 0xffeff47d); /* 55 */
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II (b, c, d, a, x[ 1], S44, 0x85845dd1); /* 56 */
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II (a, b, c, d, x[ 8], S41, 0x6fa87e4f); /* 57 */
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II (d, a, b, c, x[15], S42, 0xfe2ce6e0); /* 58 */
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II (c, d, a, b, x[ 6], S43, 0xa3014314); /* 59 */
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II (b, c, d, a, x[13], S44, 0x4e0811a1); /* 60 */
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II (a, b, c, d, x[ 4], S41, 0xf7537e82); /* 61 */
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II (d, a, b, c, x[11], S42, 0xbd3af235); /* 62 */
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II (c, d, a, b, x[ 2], S43, 0x2ad7d2bb); /* 63 */
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II (b, c, d, a, x[ 9], S44, 0xeb86d391); /* 64 */
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state[0] += a;
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state[1] += b;
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state[2] += c;
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state[3] += d;
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/* Zeroize sensitive information.
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*/
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MD5_memset ((POINTER)x, 0, sizeof (x));
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}
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/* Encodes input (UINT4) into output (unsigned char). Assumes len is
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a multiple of 4.
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*/
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static void Encode (
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unsigned char *output,
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UINT4 *input,
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unsigned int len)
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{
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unsigned int i, j;
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for (i = 0, j = 0; j < len; i++, j += 4) {
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output[j] = (unsigned char)(input[i] & 0xff);
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output[j+1] = (unsigned char)((input[i] >> 8) & 0xff);
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output[j+2] = (unsigned char)((input[i] >> 16) & 0xff);
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output[j+3] = (unsigned char)((input[i] >> 24) & 0xff);
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}
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}
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/* Decodes input (unsigned char) into output (UINT4). Assumes len is
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a multiple of 4.
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*/
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static void Decode (
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UINT4 *output,
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const unsigned char *input,
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unsigned int len)
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{
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unsigned int i, j;
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for (i = 0, j = 0; j < len; i++, j += 4)
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output[i] = ((UINT4)input[j]) | (((UINT4)input[j+1]) << 8) |
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(((UINT4)input[j+2]) << 16) | (((UINT4)input[j+3]) << 24);
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}
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#if 0
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/* Note: Replace "for loop" with standard memcpy if possible.
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*/
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static void MD5_memcpy (
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POINTER output,
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POINTER input,
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unsigned int len)
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{
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unsigned int i;
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for (i = 0; i < len; i++)
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output[i] = input[i];
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}
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/* Note: Replace "for loop" with standard memset if possible.
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*/
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static void MD5_memset (
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POINTER output,
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int value,
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unsigned int len)
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{
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unsigned int i;
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for (i = 0; i < len; i++)
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((char *)output)[i] = (char)value;
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}
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#endif
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@ -0,0 +1,107 @@
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/*
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* Copyright (C) 2003 Tommi Maekitalo
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*
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* This library is free software; you can redistribute it and/or
|
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* modify it under the terms of the GNU Lesser General Public
|
||||
* License as published by the Free Software Foundation; either
|
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* version 2.1 of the License, or (at your option) any later version.
|
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*
|
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* As a special exception, you may use this file as part of a free
|
||||
* software library without restriction. Specifically, if other files
|
||||
* instantiate templates or use macros or inline functions from this
|
||||
* file, or you compile this file and link it with other files to
|
||||
* produce an executable, this file does not by itself cause the
|
||||
* resulting executable to be covered by the GNU General Public
|
||||
* License. This exception does not however invalidate any other
|
||||
* reasons why the executable file might be covered by the GNU Library
|
||||
* General Public License.
|
||||
*
|
||||
* This library 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
|
||||
* Lesser General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU Lesser General Public
|
||||
* License along with this library; if not, write to the Free Software
|
||||
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
||||
*/
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|
||||
/* Copyright (C) 1991-2, RSA Data Security, Inc. Created 1991. All
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||||
rights reserved.
|
||||
|
||||
License to copy and use this software is granted provided that it
|
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is identified as the "RSA Data Security, Inc. MD5 Message-Digest
|
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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.
|
||||
*/
|
||||
|
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/* RSAREF types and constants
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*/
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/* PROTOTYPES should be set to one if and only if the compiler supports
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function argument prototyping.
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The following makes PROTOTYPES default to 0 if it has not already
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been defined with C compiler flags.
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*/
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#ifndef ZIM_MD5_H
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#define ZIM_MD5_H
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#ifndef PROTOTYPES
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#define PROTOTYPES 1
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#endif
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/* POINTER defines a generic pointer type */
|
||||
typedef unsigned char *POINTER;
|
||||
|
||||
/* UINT2 defines a two byte word */
|
||||
typedef unsigned short int UINT2;
|
||||
|
||||
/* UINT4 defines a four byte word */
|
||||
typedef unsigned int UINT4;
|
||||
|
||||
/* PROTO_LIST is defined depending on how PROTOTYPES is defined above.
|
||||
If using PROTOTYPES, then PROTO_LIST returns the list, otherwise it
|
||||
returns an empty list.
|
||||
*/
|
||||
|
||||
#if PROTOTYPES
|
||||
#define PROTO_LIST(list) list
|
||||
#else
|
||||
#define PROTO_LIST(list) ()
|
||||
#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 */
|
||||
} zim_MD5_CTX;
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
void zim_MD5Init PROTO_LIST ((zim_MD5_CTX *));
|
||||
void zim_MD5Update PROTO_LIST
|
||||
((zim_MD5_CTX *, const unsigned char *, unsigned int));
|
||||
void zim_MD5Final PROTO_LIST ((unsigned char [16], zim_MD5_CTX *));
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif /* ZIM_MD5_H */
|
||||
@ -0,0 +1,134 @@
|
||||
/*
|
||||
* Copyright (C) 2003 Tommi Maekitalo
|
||||
*
|
||||
* This library is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU Lesser General Public
|
||||
* License as published by the Free Software Foundation; either
|
||||
* version 2.1 of the License, or (at your option) any later version.
|
||||
*
|
||||
* As a special exception, you may use this file as part of a free
|
||||
* software library without restriction. Specifically, if other files
|
||||
* instantiate templates or use macros or inline functions from this
|
||||
* file, or you compile this file and link it with other files to
|
||||
* produce an executable, this file does not by itself cause the
|
||||
* resulting executable to be covered by the GNU General Public
|
||||
* License. This exception does not however invalidate any other
|
||||
* reasons why the executable file might be covered by the GNU Library
|
||||
* General Public License.
|
||||
*
|
||||
* This library 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
|
||||
* Lesser General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU Lesser General Public
|
||||
* License along with this library; if not, write to the Free Software
|
||||
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
||||
*
|
||||
*
|
||||
* copied from cxxtools
|
||||
*/
|
||||
|
||||
#include "md5stream.h"
|
||||
#include <cstring>
|
||||
|
||||
namespace zim
|
||||
{
|
||||
|
||||
////////////////////////////////////////////////////////////////////////
|
||||
// Md5streambuf
|
||||
//
|
||||
Md5streambuf::Md5streambuf()
|
||||
{
|
||||
std::memset(digest, 0, 16);
|
||||
}
|
||||
|
||||
std::streambuf::int_type Md5streambuf::overflow(
|
||||
std::streambuf::int_type ch)
|
||||
{
|
||||
if (pptr() == 0)
|
||||
{
|
||||
// Ausgabepuffer ist leer - initialisieren
|
||||
zim_MD5Init(&context);
|
||||
}
|
||||
else
|
||||
{
|
||||
// konsumiere Zeichen aus dem Puffer
|
||||
zim_MD5Update(&context,
|
||||
(const unsigned char*)pbase(),
|
||||
pptr() - pbase());
|
||||
}
|
||||
|
||||
// setze Ausgabepuffer
|
||||
setp(buffer, buffer + bufsize);
|
||||
|
||||
if (ch != traits_type::eof())
|
||||
{
|
||||
// das Zeichen, welches den overflow ausgelöst hat, stecken
|
||||
// wir in den Puffer.
|
||||
*pptr() = traits_type::to_char_type(ch);
|
||||
pbump(1);
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
std::streambuf::int_type Md5streambuf::underflow()
|
||||
{
|
||||
// nur Ausgabestrom
|
||||
return traits_type::eof();
|
||||
}
|
||||
|
||||
int Md5streambuf::sync()
|
||||
{
|
||||
if (pptr() != pbase())
|
||||
{
|
||||
// konsumiere Zeichen aus dem Puffer
|
||||
zim_MD5Update(&context, (const unsigned char*)pbase(), pptr() - pbase());
|
||||
|
||||
// leere Ausgabepuffer
|
||||
setp(buffer, buffer + bufsize);
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
void Md5streambuf::getDigest(unsigned char digest_[16])
|
||||
{
|
||||
if (pptr())
|
||||
{
|
||||
if (pptr() != pbase())
|
||||
{
|
||||
// konsumiere Zeichen aus dem Puffer
|
||||
zim_MD5Update(&context, (const unsigned char*)pbase(), pptr() - pbase());
|
||||
}
|
||||
|
||||
// deinitialisiere Ausgabepuffer
|
||||
setp(0, 0);
|
||||
|
||||
zim_MD5Final(digest, &context);
|
||||
}
|
||||
|
||||
std::memcpy(digest_, digest, 16);
|
||||
}
|
||||
|
||||
////////////////////////////////////////////////////////////////////////
|
||||
// Md5stream
|
||||
//
|
||||
const char* Md5stream::getHexDigest()
|
||||
{
|
||||
static const char hex[] = "0123456789abcdef";
|
||||
unsigned char md5[16];
|
||||
getDigest(md5);
|
||||
int i;
|
||||
char* p = hexdigest;
|
||||
for (i = 0; i < 16; ++i)
|
||||
{
|
||||
*p++ = hex[md5[i] >> 4];
|
||||
*p++ = hex[md5[i] & 0xf];
|
||||
}
|
||||
*p = '\0';
|
||||
return hexdigest;
|
||||
}
|
||||
|
||||
}
|
||||
@ -0,0 +1,134 @@
|
||||
/*
|
||||
* Copyright (C) 2003 Tommi Maekitalo
|
||||
*
|
||||
* This library is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU Lesser General Public
|
||||
* License as published by the Free Software Foundation; either
|
||||
* version 2.1 of the License, or (at your option) any later version.
|
||||
*
|
||||
* As a special exception, you may use this file as part of a free
|
||||
* software library without restriction. Specifically, if other files
|
||||
* instantiate templates or use macros or inline functions from this
|
||||
* file, or you compile this file and link it with other files to
|
||||
* produce an executable, this file does not by itself cause the
|
||||
* resulting executable to be covered by the GNU General Public
|
||||
* License. This exception does not however invalidate any other
|
||||
* reasons why the executable file might be covered by the GNU Library
|
||||
* General Public License.
|
||||
*
|
||||
* This library 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
|
||||
* Lesser General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU Lesser General Public
|
||||
* License along with this library; if not, write to the Free Software
|
||||
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
||||
*
|
||||
*
|
||||
* copied from cxxtools
|
||||
*/
|
||||
|
||||
#ifndef ZIM_MD5STREAM_H
|
||||
#define ZIM_MD5STREAM_H
|
||||
|
||||
#include "md5.h"
|
||||
#include <iostream>
|
||||
#include <iterator>
|
||||
#include <algorithm>
|
||||
|
||||
namespace zim
|
||||
{
|
||||
|
||||
class Md5streambuf : public std::streambuf
|
||||
{
|
||||
public:
|
||||
Md5streambuf();
|
||||
|
||||
void getDigest(unsigned char digest[16]);
|
||||
|
||||
private:
|
||||
static const unsigned int bufsize = 64;
|
||||
char buffer[bufsize];
|
||||
zim_MD5_CTX context;
|
||||
unsigned char digest[16];
|
||||
|
||||
std::streambuf::int_type overflow(std::streambuf::int_type ch);
|
||||
std::streambuf::int_type underflow();
|
||||
int sync();
|
||||
};
|
||||
|
||||
/**
|
||||
This is a easy and safe interface to MD5-calculation.
|
||||
|
||||
To get a MD5-sum of data, instantiate a md5stream, copy your data
|
||||
into it and read the digest.
|
||||
|
||||
After calling getDigest or getHexDigest, the class can be reused
|
||||
for another md5-calculation. The algorithm is automatically
|
||||
reinitialized when the first character is received.
|
||||
|
||||
example:
|
||||
\code
|
||||
int main(int argc, char* argv[])
|
||||
{
|
||||
Md5stream s;
|
||||
for (int i = 1; i < argc; ++i)
|
||||
{
|
||||
std::ifstream in(argv[i]);
|
||||
if (in)
|
||||
{
|
||||
s << in.rdbuf();
|
||||
std::cout << s.getHexDigest() << " " << argv[i] << std::endl;
|
||||
}
|
||||
}
|
||||
}
|
||||
\endcode
|
||||
*/
|
||||
class Md5stream : public std::ostream
|
||||
{
|
||||
public:
|
||||
typedef std::ostreambuf_iterator<char> iterator;
|
||||
|
||||
private:
|
||||
Md5streambuf streambuf;
|
||||
char hexdigest[33];
|
||||
|
||||
public:
|
||||
/// initializes md5-calculation
|
||||
Md5stream()
|
||||
: std::ostream(0)
|
||||
{
|
||||
init(&streambuf);
|
||||
}
|
||||
|
||||
/// ends md5-calculation and returns 16 bytes digest
|
||||
void getDigest(unsigned char digest[16])
|
||||
{ streambuf.getDigest(digest); }
|
||||
/// ends md5-calculation and digest as 32 bytes hex
|
||||
const char* getHexDigest();
|
||||
|
||||
/// returns output-iterator to Md5stream
|
||||
iterator begin()
|
||||
{ return iterator(&streambuf); }
|
||||
};
|
||||
|
||||
template <typename iterator_type>
|
||||
std::string md5(iterator_type from, iterator_type to)
|
||||
{
|
||||
Md5stream s;
|
||||
std::copy(from, to, std::ostream_iterator<char>(s));
|
||||
return s.getHexDigest();
|
||||
}
|
||||
|
||||
template <typename data_type>
|
||||
std::string md5(const data_type& data)
|
||||
{
|
||||
Md5stream s;
|
||||
s << data;
|
||||
return s.getHexDigest();
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
#endif // ZIM_MD5STREAM_H
|
||||
Loading…
Reference in new issue