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Diffstat (limited to 'camel/md5-utils.c')
| -rw-r--r-- | camel/md5-utils.c | 391 |
1 files changed, 0 insertions, 391 deletions
diff --git a/camel/md5-utils.c b/camel/md5-utils.c deleted file mode 100644 index 7363eaec40..0000000000 --- a/camel/md5-utils.c +++ /dev/null @@ -1,391 +0,0 @@ -/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */ -/* - * This code implements the MD5 message-digest algorithm. - * The algorithm is due to Ron Rivest. This code was - * written by Colin Plumb in 1993, no copyright is claimed. - * This code is in the public domain; do with it what you wish. - * - * Equivalent code is available from RSA Data Security, Inc. - * This code has been tested against that, and is equivalent, - * except that you don't need to include two pages of legalese - * with every copy. - * - * To compute the message digest of a chunk of bytes, declare an - * MD5Context structure, pass it to md5_init, call md5_update as - * needed on buffers full of bytes, and then call md5_Final, which - * will fill a supplied 16-byte array with the digest. - */ - -/* parts of this file are : - * Written March 1993 by Branko Lankester - * Modified June 1993 by Colin Plumb for altered md5.c. - * Modified October 1995 by Erik Troan for RPM - */ - - -#include "md5-utils.h" -#include <stdio.h> - -static void md5_transform (guint32 buf[4], const guint32 in[16]); - -static gint _ie = 0x44332211; -static union _endian { gint i; gchar b[4]; } *_endian = (union _endian *)&_ie; -#define IS_BIG_ENDIAN() (_endian->b[0] == '\x44') -#define IS_LITTLE_ENDIAN() (_endian->b[0] == '\x11') - - -/* - * Note: this code is harmless on little-endian machines. - */ -static void -_byte_reverse (guchar *buf, guint32 longs) -{ - guint32 t; - do { - t = (guint32) ((guint32) buf[3] << 8 | buf[2]) << 16 | - ((guint32) buf[1] << 8 | buf[0]); - *(guint32 *) buf = t; - buf += 4; - } while (--longs); -} - -/** - * md5_init: Initialise an md5 context object - * @ctx: md5 context - * - * Initialise an md5 buffer. - * - **/ -void -md5_init (MD5Context *ctx) -{ - ctx->buf[0] = 0x67452301; - ctx->buf[1] = 0xefcdab89; - ctx->buf[2] = 0x98badcfe; - ctx->buf[3] = 0x10325476; - - ctx->bits[0] = 0; - ctx->bits[1] = 0; - - if (IS_BIG_ENDIAN()) - ctx->doByteReverse = 1; - else - ctx->doByteReverse = 0; -} - - - -/** - * md5_update: add a buffer to md5 hash computation - * @ctx: conetxt object used for md5 computaion - * @buf: buffer to add - * @len: buffer length - * - * Update context to reflect the concatenation of another buffer full - * of bytes. Use this to progressively construct an md5 hash. - **/ -void -md5_update (MD5Context *ctx, const guchar *buf, guint32 len) -{ - guint32 t; - - /* Update bitcount */ - - t = ctx->bits[0]; - if ((ctx->bits[0] = t + ((guint32) len << 3)) < t) - ctx->bits[1]++; /* Carry from low to high */ - ctx->bits[1] += len >> 29; - - t = (t >> 3) & 0x3f; /* Bytes already in shsInfo->data */ - - /* Handle any leading odd-sized chunks */ - - if (t) { - guchar *p = (guchar *) ctx->in + t; - - t = 64 - t; - if (len < t) { - memcpy (p, buf, len); - return; - } - memcpy (p, buf, t); - if (ctx->doByteReverse) - _byte_reverse (ctx->in, 16); - md5_transform (ctx->buf, (guint32 *) ctx->in); - buf += t; - len -= t; - } - /* Process data in 64-byte chunks */ - - while (len >= 64) { - memcpy (ctx->in, buf, 64); - if (ctx->doByteReverse) - _byte_reverse (ctx->in, 16); - md5_transform (ctx->buf, (guint32 *) ctx->in); - buf += 64; - len -= 64; - } - - /* Handle any remaining bytes of data. */ - - memcpy (ctx->in, buf, len); -} - - - - - -/* - * Final wrapup - pad to 64-byte boundary with the bit pattern - * 1 0* (64-bit count of bits processed, MSB-first) - */ -/** - * md5_final: copy the final md5 hash to a bufer - * @digest: 16 bytes buffer - * @ctx: context containing the calculated md5 - * - * copy the final md5 hash to a bufer - **/ -void -md5_final (MD5Context *ctx, guchar digest[16]) -{ - guint32 count; - guchar *p; - - /* Compute number of bytes mod 64 */ - count = (ctx->bits[0] >> 3) & 0x3F; - - /* Set the first char of padding to 0x80. This is safe since there is - always at least one byte free */ - p = ctx->in + count; - *p++ = 0x80; - - /* Bytes of padding needed to make 64 bytes */ - count = 64 - 1 - count; - - /* Pad out to 56 mod 64 */ - if (count < 8) { - /* Two lots of padding: Pad the first block to 64 bytes */ - memset (p, 0, count); - if (ctx->doByteReverse) - _byte_reverse (ctx->in, 16); - md5_transform (ctx->buf, (guint32 *) ctx->in); - - /* Now fill the next block with 56 bytes */ - memset (ctx->in, 0, 56); - } else { - /* Pad block to 56 bytes */ - memset (p, 0, count - 8); - } - if (ctx->doByteReverse) - _byte_reverse (ctx->in, 14); - - /* Append length in bits and transform */ - ((guint32 *) ctx->in)[14] = ctx->bits[0]; - ((guint32 *) ctx->in)[15] = ctx->bits[1]; - - md5_transform (ctx->buf, (guint32 *) ctx->in); - if (ctx->doByteReverse) - _byte_reverse ((guchar *) ctx->buf, 4); - memcpy (digest, ctx->buf, 16); -} - - - - -/* The four core functions - F1 is optimized somewhat */ - -/* #define F1(x, y, z) (x & y | ~x & z) */ -#define F1(x, y, z) (z ^ (x & (y ^ z))) -#define F2(x, y, z) F1(z, x, y) -#define F3(x, y, z) (x ^ y ^ z) -#define F4(x, y, z) (y ^ (x | ~z)) - -/* This is the central step in the MD5 algorithm. */ -#define MD5STEP(f, w, x, y, z, data, s) \ - ( w += f(x, y, z) + data, w = w<<s | w>>(32-s), w += x ) - -/* - * The core of the MD5 algorithm, this alters an existing MD5 hash to - * reflect the addition of 16 longwords of new data. md5_Update blocks - * the data and converts bytes into longwords for this routine. - */ -static void -md5_transform (guint32 buf[4], const guint32 in[16]) -{ - register guint32 a, b, c, d; - - a = buf[0]; - b = buf[1]; - c = buf[2]; - d = buf[3]; - - MD5STEP (F1, a, b, c, d, in[0] + 0xd76aa478, 7); - MD5STEP (F1, d, a, b, c, in[1] + 0xe8c7b756, 12); - MD5STEP (F1, c, d, a, b, in[2] + 0x242070db, 17); - MD5STEP (F1, b, c, d, a, in[3] + 0xc1bdceee, 22); - MD5STEP (F1, a, b, c, d, in[4] + 0xf57c0faf, 7); - MD5STEP (F1, d, a, b, c, in[5] + 0x4787c62a, 12); - MD5STEP (F1, c, d, a, b, in[6] + 0xa8304613, 17); - MD5STEP (F1, b, c, d, a, in[7] + 0xfd469501, 22); - MD5STEP (F1, a, b, c, d, in[8] + 0x698098d8, 7); - MD5STEP (F1, d, a, b, c, in[9] + 0x8b44f7af, 12); - MD5STEP (F1, c, d, a, b, in[10] + 0xffff5bb1, 17); - MD5STEP (F1, b, c, d, a, in[11] + 0x895cd7be, 22); - MD5STEP (F1, a, b, c, d, in[12] + 0x6b901122, 7); - MD5STEP (F1, d, a, b, c, in[13] + 0xfd987193, 12); - MD5STEP (F1, c, d, a, b, in[14] + 0xa679438e, 17); - MD5STEP (F1, b, c, d, a, in[15] + 0x49b40821, 22); - - MD5STEP (F2, a, b, c, d, in[1] + 0xf61e2562, 5); - MD5STEP (F2, d, a, b, c, in[6] + 0xc040b340, 9); - MD5STEP (F2, c, d, a, b, in[11] + 0x265e5a51, 14); - MD5STEP (F2, b, c, d, a, in[0] + 0xe9b6c7aa, 20); - MD5STEP (F2, a, b, c, d, in[5] + 0xd62f105d, 5); - MD5STEP (F2, d, a, b, c, in[10] + 0x02441453, 9); - MD5STEP (F2, c, d, a, b, in[15] + 0xd8a1e681, 14); - MD5STEP (F2, b, c, d, a, in[4] + 0xe7d3fbc8, 20); - MD5STEP (F2, a, b, c, d, in[9] + 0x21e1cde6, 5); - MD5STEP (F2, d, a, b, c, in[14] + 0xc33707d6, 9); - MD5STEP (F2, c, d, a, b, in[3] + 0xf4d50d87, 14); - MD5STEP (F2, b, c, d, a, in[8] + 0x455a14ed, 20); - MD5STEP (F2, a, b, c, d, in[13] + 0xa9e3e905, 5); - MD5STEP (F2, d, a, b, c, in[2] + 0xfcefa3f8, 9); - MD5STEP (F2, c, d, a, b, in[7] + 0x676f02d9, 14); - MD5STEP (F2, b, c, d, a, in[12] + 0x8d2a4c8a, 20); - - MD5STEP (F3, a, b, c, d, in[5] + 0xfffa3942, 4); - MD5STEP (F3, d, a, b, c, in[8] + 0x8771f681, 11); - MD5STEP (F3, c, d, a, b, in[11] + 0x6d9d6122, 16); - MD5STEP (F3, b, c, d, a, in[14] + 0xfde5380c, 23); - MD5STEP (F3, a, b, c, d, in[1] + 0xa4beea44, 4); - MD5STEP (F3, d, a, b, c, in[4] + 0x4bdecfa9, 11); - MD5STEP (F3, c, d, a, b, in[7] + 0xf6bb4b60, 16); - MD5STEP (F3, b, c, d, a, in[10] + 0xbebfbc70, 23); - MD5STEP (F3, a, b, c, d, in[13] + 0x289b7ec6, 4); - MD5STEP (F3, d, a, b, c, in[0] + 0xeaa127fa, 11); - MD5STEP (F3, c, d, a, b, in[3] + 0xd4ef3085, 16); - MD5STEP (F3, b, c, d, a, in[6] + 0x04881d05, 23); - MD5STEP (F3, a, b, c, d, in[9] + 0xd9d4d039, 4); - MD5STEP (F3, d, a, b, c, in[12] + 0xe6db99e5, 11); - MD5STEP (F3, c, d, a, b, in[15] + 0x1fa27cf8, 16); - MD5STEP (F3, b, c, d, a, in[2] + 0xc4ac5665, 23); - - MD5STEP (F4, a, b, c, d, in[0] + 0xf4292244, 6); - MD5STEP (F4, d, a, b, c, in[7] + 0x432aff97, 10); - MD5STEP (F4, c, d, a, b, in[14] + 0xab9423a7, 15); - MD5STEP (F4, b, c, d, a, in[5] + 0xfc93a039, 21); - MD5STEP (F4, a, b, c, d, in[12] + 0x655b59c3, 6); - MD5STEP (F4, d, a, b, c, in[3] + 0x8f0ccc92, 10); - MD5STEP (F4, c, d, a, b, in[10] + 0xffeff47d, 15); - MD5STEP (F4, b, c, d, a, in[1] + 0x85845dd1, 21); - MD5STEP (F4, a, b, c, d, in[8] + 0x6fa87e4f, 6); - MD5STEP (F4, d, a, b, c, in[15] + 0xfe2ce6e0, 10); - MD5STEP (F4, c, d, a, b, in[6] + 0xa3014314, 15); - MD5STEP (F4, b, c, d, a, in[13] + 0x4e0811a1, 21); - MD5STEP (F4, a, b, c, d, in[4] + 0xf7537e82, 6); - MD5STEP (F4, d, a, b, c, in[11] + 0xbd3af235, 10); - MD5STEP (F4, c, d, a, b, in[2] + 0x2ad7d2bb, 15); - MD5STEP (F4, b, c, d, a, in[9] + 0xeb86d391, 21); - - buf[0] += a; - buf[1] += b; - buf[2] += c; - buf[3] += d; -} - - - - -/** - * md5_get_digest: get the md5 hash of a buffer - * @buffer: byte buffer - * @buffer_size: buffer size (in bytes) - * @digest: 16 bytes buffer receiving the hash code. - * - * Get the md5 hash of a buffer. The result is put in - * the 16 bytes buffer @digest . - **/ -void -md5_get_digest (const gchar *buffer, gint buffer_size, guchar digest[16]) -{ - MD5Context ctx; - - md5_init (&ctx); - md5_update (&ctx, buffer, buffer_size); - md5_final (&ctx, digest); - -} - - -/** - * md5_get_digest_from_stream: get the md5 hash of a stream - * @stream: stream - * @digest: 16 bytes buffer receiving the hash code. - * - * Get the md5 hash of a stream. The result is put in - * the 16 bytes buffer @digest . - **/ -void -md5_get_digest_from_stream (CamelStream *stream, guchar digest[16]) -{ - MD5Context ctx; - guchar tmp_buf[1024]; - gint nb_bytes_read; - - md5_init (&ctx); - - nb_bytes_read = camel_stream_read (stream, tmp_buf, 1024); - while (nb_bytes_read) { - md5_update (&ctx, tmp_buf, nb_bytes_read); - nb_bytes_read = camel_stream_read (stream, tmp_buf, 1024); - } - - md5_final (&ctx, digest); - -} - - - - -/** - * md5_get_digest_from_file: get the md5 hash of a file - * @filename: file name - * @digest: 16 bytes buffer receiving the hash code. - * - * Get the md5 hash of a file. The result is put in - * the 16 bytes buffer @digest . - **/ -void -md5_get_digest_from_file (const gchar *filename, guchar digest[16]) -{ - MD5Context ctx; - guchar tmp_buf[1024]; - gint nb_bytes_read; - FILE *fp; - - printf("generating checksum\n"); - - md5_init (&ctx); - fp = fopen(filename, "r"); - if (!fp) { - return; - } - - while ((nb_bytes_read = fread (tmp_buf, sizeof (guchar), 1024, fp)) > 0) - md5_update (&ctx, tmp_buf, nb_bytes_read); - - if (ferror(fp)) { - fclose(fp); - return; - } - - - md5_final (&ctx, digest); - - printf("checksum done\n"); -} - - - - |