diff --git a/global.h b/global.h index f0f7689..4413359 100644 --- a/global.h +++ b/global.h @@ -47,4 +47,8 @@ #define PROTO_LIST(list) () #endif +#define MD5Init md5_init +#define MD5Update md5_update +#define MD5Final md5_final + #endif /* end _GLOBAL_H_ */ diff --git a/hmac_md5.c b/hmac_md5.c deleted file mode 100644 index 606979d..0000000 --- a/hmac_md5.c +++ /dev/null @@ -1,76 +0,0 @@ -#include "global.h" -#include "md5.h" - -/* -** Function: hmac_md5 -*/ - -void hmac_md5(text, text_len, key, key_len, digest) -unsigned char* text; /* pointer to data stream */ -int text_len; /* length of data stream */ -unsigned char* key; /* pointer to authentication key */ -int key_len; /* length of authentication key */ -unsigned char *digest; /* caller digest to be filled in */ - -{ - MD5_CTX context; - unsigned char k_ipad[65]; /* inner padding - - * key XORd with ipad - */ - unsigned char k_opad[65]; /* outer padding - - * key XORd with opad - */ - unsigned char tk[16]; - int i; - /* if key is longer than 64 bytes reset it to key=MD5(key) */ - if (key_len > 64) { - - MD5_CTX tctx; - - MD5Init(&tctx); - MD5Update(&tctx, key, key_len); - MD5Final(tk, &tctx); - - key = tk; - key_len = 16; - } - - /* - * the HMAC_MD5 transform looks like: - * - * MD5(K XOR opad, MD5(K XOR ipad, text)) - * - * where K is an n byte key - * ipad is the byte 0x36 repeated 64 times - * opad is the byte 0x5c repeated 64 times - * and text is the data being protected - */ - - /* start out by storing key in pads */ - bzero( k_ipad, sizeof k_ipad); - bzero( k_opad, sizeof k_opad); - bcopy( key, k_ipad, key_len); - bcopy( key, k_opad, key_len); - - /* XOR key with ipad and opad values */ - for (i=0; i<64; i++) { - k_ipad[i] ^= 0x36; - k_opad[i] ^= 0x5c; - } - /* - * perform inner MD5 - */ - MD5Init(&context); /* init context for 1st pass */ - MD5Update(&context, k_ipad, 64); /* start with inner pad */ - MD5Update(&context, text, text_len); /* then text of datagram */ - MD5Final(digest, &context); /* finish up 1st pass */ - /* - * perform outer MD5 - */ - MD5Init(&context); /* init context for 2nd - * pass */ - MD5Update(&context, k_opad, 64); /* start with outer pad */ - MD5Update(&context, digest, 16); /* then results of 1st - * hash */ - MD5Final(digest, &context); /* finish up 2nd pass */ -} diff --git a/hmac_md5.h b/hmac_md5.h deleted file mode 100644 index 8c1d835..0000000 --- a/hmac_md5.h +++ /dev/null @@ -1,11 +0,0 @@ - -/* prototypes */ - -void hmac_md5( unsigned char* text, int text_len, unsigned char* key, int key_len, unsigned char* digest); - -/* pointer to data stream */ -/* length of data stream */ -/* pointer to authentication key */ -/* length of authentication key */ -/* caller digest to be filled in */ - diff --git a/ht.c b/ht.c index 75297a1..339d1a9 100644 --- a/ht.c +++ b/ht.c @@ -4,35 +4,36 @@ #include #include #include -#include "hmac_md5.h" +#include "md5.h" #include "base64.h" + #ifndef _PASSWORD_LEN #define _PASSWORD_LEN 128 #endif #define L (_PASSWORD_LEN+256) int main(int argc, char *argv[]) { - unsigned char digest[16]; + char *digest; char d_str[L]; char b6[L*2]; char *pw, *p; - int i; + memset(b6, 0, sizeof b6); if (argc != 3) { printf("Usage: ht UserName ChallengeInBase64\n"); exit(1); } pw = getpass("SMTP-AUTH Password: "); - b64_pton(argv[2], b6, L*2); + b64_pton(argv[2], (u_char*)b6, L*2); - hmac_md5(b6, strlen(b6), pw, strlen(pw), digest); + //fprintf(stderr, "b6=[%s](%d), pw=[%s](%d)\n", b6, strlen(b6), pw, strlen(pw)); + digest = hmac_md5(b6, strlen(b6), pw, strlen(pw)); snprintf(d_str, sizeof d_str, "%s ", argv[1]); p = d_str+strlen(d_str); - for (i=0; i<16 && p #include #include @@ -11,10 +10,11 @@ #include #include +#ifndef LINE_MAX #define LINE_MAX 256 +#endif unsigned char up[513]; int uplen; -static char hextab[]="0123456789abcdef"; #ifndef USERAPOPFILE # define USERAPOPFILE ".apop" @@ -134,11 +134,15 @@ { char assign[MAXPATHLEN]; char *buf, *p; + char *qcdir; FILE *fp; struct stat st; int i; if (ag[0].line && ag[1].line) return; - snprintf(pathname, sizeof pathname, "%s", dirname(qmailcontrol)); + qcdir = strdup(qmailcontrol); + if (!qcdir) _exit(2); + snprintf(pathname, sizeof pathname, "%s", dirname(qcdir)); + free(qcdir); snprintf(assign, sizeof assign, "%s/%s", pathname, "users/assign"); if (stat(assign, &st) < 0) return; @@ -339,7 +343,6 @@ /* Do not care if path name truncated. Just skip it. */ } - // fprintf(stderr, "a=%s\n", apopfile); if (setuid(uid) != 0) _exit(2); if (stat(apopfile, &stbuf) < 0) return (FILE*)-2; /* no password file, exit with error */ @@ -356,17 +359,15 @@ int doit(unsigned char *testlogin, unsigned char *response, unsigned char *challenge) { - static unsigned char line[LINE_MAX + 1]; + static char line[LINE_MAX + 1]; int found_user= 0; - unsigned char *password = NULL; - static unsigned char digest[16]; - static unsigned char digascii[33]; - unsigned char h; + char *password = NULL; + char *digest; FILE *fp; - int j; int result; + memset(line, 0, sizeof line); - if (0 >= (fp=getapopfd(testlogin))) + if (0 >= (fp=getapopfd((char*)testlogin))) _exit(2); if (fp) { @@ -386,18 +387,10 @@ memset(line, 0, sizeof line); return(1); } - hmac_md5(challenge, strlen(challenge), password, strlen(password), digest); +//fprintf(stderr, "challenge=[%s](%d), password=[%s](%d)\n", challenge, strlen(challenge), password, strlen(password)); + digest = hmac_md5((char*)challenge, strlen((char*)challenge), (char*)password, strlen((char*)password)); - digascii[32]=0; - - for (j=0; j<16; j++) - { - h=digest[j] >> 4; - digascii[2*j]=hextab[h]; - h=digest[j] & 0x0f; - digascii[(2*j)+1]=hextab[h]; - } - result = (strcmp(digascii,response) && strcmp(password,response)); + result = (strcmp(digest,(char*)response) && strcmp(password,(char*)response)); memset(line, 0, sizeof line); return result; } @@ -410,6 +403,7 @@ int r; int i; int accepted; + memset(up, 0, sizeof up); if (!argv[1]) _exit(2); if (getenv("QMAILCONTROL")) diff --git a/md5.h b/md5.h index 94774ba..a753102 100644 --- a/md5.h +++ b/md5.h @@ -1,49 +1,91 @@ -/* MD5.H - header file for MD5C.C +/* + Copyright (C) 1999 Aladdin Enterprises. All rights reserved. + + This software is provided 'as-is', without any express or implied + warranty. In no event will the authors be held liable for any damages + arising from the use of this software. + + Permission is granted to anyone to use this software for any purpose, + including commercial applications, and to alter it and redistribute it + freely, subject to the following restrictions: + + 1. The origin of this software must not be misrepresented; you must not + claim that you wrote the original software. If you use this software + in a product, an acknowledgment in the product documentation would be + appreciated but is not required. + 2. Altered source versions must be plainly marked as such, and must not be + misrepresented as being the original software. + 3. This notice may not be removed or altered from any source distribution. + + L. Peter Deutsch + ghost@aladdin.com + + */ +/*$Id$ */ +/* + Independent implementation of MD5 (RFC 1321). + + This code implements the MD5 Algorithm defined in RFC 1321. + It is derived directly from the text of the RFC and not from the + reference implementation. + + The original and principal author of md5.h is L. Peter Deutsch + . Other authors are noted in the change history + that follows (in reverse chronological order): + + 1999-11-04 lpd Edited comments slightly for automatic TOC extraction. + 1999-10-18 lpd Fixed typo in header comment (ansi2knr rather than md5); + added conditionalization for C++ compilation from Martin + Purschke . + 1999-05-03 lpd Original version. */ -/* Copyright (C) 1991-2, RSA Data Security, Inc. Created 1991. All - rights reserved. +#ifndef md5_INCLUDED +# define md5_INCLUDED - 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. +/* MD5 context */ - 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. - */ +#define MD5BLKLEN 64 /* MD5 block length */ +#define MD5DIGLEN 16 /* MD5 digest length */ -#ifndef _MD5_H_ -#define _MD5_H_ 1 - -#ifdef __cplusplus -extern "C" { -#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; + unsigned long chigh; /* high 32bits of byte count */ + unsigned long clow; /* low 32bits of byte count */ + unsigned long state[4]; /* state (ABCD) */ + unsigned char buf[MD5BLKLEN]; /* input buffer */ + unsigned char *ptr; /* buffer position */ +} MD5CONTEXT; -void MD5Init PROTO_LIST ((MD5_CTX *)); -void MD5Update PROTO_LIST - ((MD5_CTX *, unsigned char *, unsigned int)); -void MD5Final PROTO_LIST ((unsigned char [16], MD5_CTX *)); +char *hmac_md5 (char *text,unsigned long tl,char *key,unsigned long kl); +void md5_init (MD5CONTEXT *ctx); +void md5_update (MD5CONTEXT *ctx,unsigned char *data,unsigned long len); +void md5_final (unsigned char *digest,MD5CONTEXT *ctx); + +/* + * This code has some adaptations for the Ghostscript environment, but it + * will compile and run correctly in any environment with 8-bit chars and + * 32-bit ints. Specifically, it assumes that if the following are + * defined, they have the same meaning as in Ghostscript: P1, P2, P3, + * ARCH_IS_BIG_ENDIAN. + */ + +typedef unsigned char md5_byte_t; /* 8-bit byte */ +typedef unsigned int md5_word_t; /* 32-bit word */ + +/* Define the state of the MD5 Algorithm. */ +typedef struct md5_state_s { + md5_word_t count[2]; /* message length in bits, lsw first */ + md5_word_t abcd[4]; /* digest buffer */ + md5_byte_t buf[64]; /* accumulate block */ +} md5_state_t; #ifdef __cplusplus -} +extern "C" +{ #endif +#ifdef __cplusplus +} /* end extern "C" */ #endif + +#endif /* md5_INCLUDED */ diff --git a/md5c.c b/md5c.c deleted file mode 100644 index 8b0c856..0000000 --- a/md5c.c +++ /dev/null @@ -1,334 +0,0 @@ -/* 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 "global.h" -#include "md5.h" - -/* Constants for MD5Transform routine. - */ -#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 - -static void MD5Transform PROTO_LIST ((UINT4 [4], unsigned char [64])); -static void Encode PROTO_LIST - ((unsigned char *, UINT4 *, unsigned int)); -static void Decode PROTO_LIST - ((UINT4 *, unsigned char *, unsigned int)); -static void MD5_memcpy PROTO_LIST ((POINTER, POINTER, unsigned int)); -static void MD5_memset PROTO_LIST ((POINTER, int, unsigned int)); - -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. - */ -void MD5Init (context) -MD5_CTX *context; /* 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; -} - -/* MD5 block update operation. Continues an MD5 message-digest - operation, processing another message block, and updating the - context. - */ -void MD5Update (context, input, inputLen) -MD5_CTX *context; /* context */ -unsigned char *input; /* input block */ -unsigned int inputLen; /* length of input block */ -{ - unsigned int i, index, partLen; - - /* Compute number of bytes mod 64 */ - index = (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 = 64 - index; - - /* Transform as many times as possible. - */ - if (inputLen >= partLen) { - MD5_memcpy - ((POINTER)&context->buffer[index], (POINTER)input, partLen); - MD5Transform (context->state, context->buffer); - - for (i = partLen; i + 63 < inputLen; i += 64) - MD5Transform (context->state, &input[i]); - - index = 0; - } - else - i = 0; - - /* Buffer remaining input */ - MD5_memcpy - ((POINTER)&context->buffer[index], (POINTER)&input[i], - inputLen-i); -} - -/* MD5 finalization. Ends an MD5 message-digest operation, writing the - the message digest and zeroizing the context. - */ -void MD5Final (digest, context) -unsigned char digest[16]; /* message digest */ -MD5_CTX *context; /* context */ -{ - unsigned char bits[8]; - unsigned int index, padLen; - - /* Save number of bits */ - Encode (bits, context->count, 8); - - /* Pad out to 56 mod 64. - */ - index = (unsigned int)((context->count[0] >> 3) & 0x3f); - padLen = (index < 56) ? (56 - index) : (120 - index); - MD5Update (context, PADDING, padLen); - - /* Append length (before padding) */ - MD5Update (context, bits, 8); - - /* Store state in digest */ - Encode (digest, context->state, 16); - - /* Zeroize sensitive information. - */ - MD5_memset ((POINTER)context, 0, sizeof (*context)); -} - -/* MD5 basic transformation. Transforms state based on block. - */ -static void MD5Transform (state, block) -UINT4 state[4]; -unsigned char block[64]; -{ - UINT4 a = state[0], b = state[1], c = state[2], d = state[3], x[16]; - - Decode (x, block, 64); - - /* Round 1 */ - 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 */ - 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 */ - 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 */ - 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. - */ - MD5_memset ((POINTER)x, 0, sizeof (x)); -} - -/* Encodes input (UINT4) into output (unsigned char). Assumes len is - a multiple of 4. - */ -static void Encode (output, input, len) -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); - } -} - -/* Decodes input (unsigned char) into output (UINT4). Assumes len is - a multiple of 4. - */ -static void Decode (output, input, len) -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); -} - -/* Note: Replace "for loop" with standard memcpy if possible. - */ -static void MD5_memcpy (output, input, len) -POINTER output; -POINTER input; -unsigned int len; -{ - unsigned int i; - - for (i = 0; i < len; i++) - output[i] = input[i]; -} - -/* Note: Replace "for loop" with standard memset if possible. - */ -static void MD5_memset (output, value, len) -POINTER output; -int value; -unsigned int len; -{ - unsigned int i; - - for (i = 0; i < len; i++) - ((char *)output)[i] = (char)value; -}