From eae03d8935e3acf42adde6f81bc290c3b3b0bee0 Mon Sep 17 00:00:00 2001 From: Jeremy Katz Date: Fri, 1 Feb 2002 02:43:45 +0000 Subject: add isomd5sum stuff to anaconda --- isomd5sum/Makefile | 17 +++ isomd5sum/Makefile~ | 10 ++ isomd5sum/checkisomd5.c | 181 ++++++++++++++++++++++++++++++++ isomd5sum/implantisomd5.c | 174 +++++++++++++++++++++++++++++++ isomd5sum/md5.c | 256 ++++++++++++++++++++++++++++++++++++++++++++++ isomd5sum/md5.h | 25 +++++ 6 files changed, 663 insertions(+) create mode 100644 isomd5sum/Makefile create mode 100644 isomd5sum/Makefile~ create mode 100644 isomd5sum/checkisomd5.c create mode 100644 isomd5sum/implantisomd5.c create mode 100644 isomd5sum/md5.c create mode 100644 isomd5sum/md5.h (limited to 'isomd5sum') diff --git a/isomd5sum/Makefile b/isomd5sum/Makefile new file mode 100644 index 000000000..cefbf4e33 --- /dev/null +++ b/isomd5sum/Makefile @@ -0,0 +1,17 @@ +include ../Makefile.inc + +all: + gcc -c -O -g md5.c + gcc -O -g -o implantisomd5 implantisomd5.c md5.o -lm +# gcc -O -g -o checkisomd5 -DTESTING checkisomd5.c md5.o -lm +# gcc -O -g -c checkisomd5.c +# gcc -O -g -o newtcheckiso newtcheckiso.c checkisomd5.o md5.o -lm -lnewt + +install: + install -m 755 implantisomd5 $(DESTDIR)/$(RUNTIMEDIR) + +clean: + rm -f *.o + rm -f implantisomd5 checkisomd5 + +depend: diff --git a/isomd5sum/Makefile~ b/isomd5sum/Makefile~ new file mode 100644 index 000000000..4fe86f124 --- /dev/null +++ b/isomd5sum/Makefile~ @@ -0,0 +1,10 @@ +all: + gcc -c -O -g md5.c + gcc -O -g -o implantisomd5 implantisomd5.c md5.o -lm +# gcc -O -g -o checkisomd5 -DTESTING checkisomd5.c md5.o -lm +# gcc -O -g -c checkisomd5.c +# gcc -O -g -o newtcheckiso newtcheckiso.c checkisomd5.o md5.o -lm -lnewt + +clean: + rm -f *.o + rm -f implantisomd5 checkisomd5 diff --git a/isomd5sum/checkisomd5.c b/isomd5sum/checkisomd5.c new file mode 100644 index 000000000..653c1bdfd --- /dev/null +++ b/isomd5sum/checkisomd5.c @@ -0,0 +1,181 @@ +/* simple program to check implanted md5sum in an iso 9660 image */ +/* Copyright 2001 Red Hat, Inc. */ +/* Michael Fulbright msf@redhat.com */ + +#include +#include +#include +#include +#include + +#include "md5.h" + +/* number of sectors to ignore at end of iso when computing sum */ +#define SKIPSECTORS 0 + +#define APPDATA_OFFSET 883 +#define SIZE_OFFSET 84 + +#define MAX(x, y) ((x > y) ? x : y) +#define MIN(x, y) ((x < y) ? x : y) + +/* finds primary volume descriptor and returns info from it */ +/* mediasum must be a preallocated buffer at least 33 bytes long */ +int parsepvd(int isofd, char *mediasum, long long *isosize) { + unsigned char buf[2048]; + long long offset; + unsigned char *p; + + if (lseek(isofd, (off_t)(16L * 2048L), SEEK_SET) == -1) + return ((long long)-1); + + offset = (16L * 2048L); + for (;1;) { + read(isofd, buf, 2048); + if (buf[0] == 1) + /* found primary volume descriptor */ + break; + else if (buf[0] == 255) + /* hit end and didn't find primary volume descriptor */ + return ((long long)-1); + offset += 2048L; + } + + /* read out md5sum */ + memcpy(mediasum, buf + APPDATA_OFFSET + 13, 32); + mediasum[32] = '\0'; + + for (p=mediasum; *p; p++) + if (*p != ' ') + break; + + /* if the md5sum was all spaces, we didn't find md5sum */ + if (!*p) + return -1; + + /* get isosize */ + *isosize = (buf[SIZE_OFFSET]*0x1000000+buf[SIZE_OFFSET+1]*0x10000 + + buf[SIZE_OFFSET+2]*0x100 + buf[SIZE_OFFSET+3]) * 2048LL; + + return offset; +} + +/* returns -1 if no checksum encoded in media, 0 if no match, 1 if match */ +/* mediasum is the sum encoded in media, computedsum is one we compute */ +/* both strings must be pre-allocated at least 33 chars in length */ +int checkmd5sum(int isofd, char *mediasum, char *computedsum) { + int nread; + int nattempt; + int i; + int dirty; + int sector; + int appdata_start_offset, appdata_end_offset; + long long isosize; + unsigned int bufsize = 32768; + unsigned char md5sum[16]; + unsigned int offset; + unsigned int len; + unsigned char *buf; + unsigned char orig_appdata[512]; + unsigned char new_appdata[512]; + char orig_md5str[40], md5str[40]; + MD5_CTX md5ctx; + + + pvd_offset = parsepvd(isofd, &orig_md5str, &isosize); + + /* seek to application data, read */ + lseek(isofd, pvd_offset + APPDATA_OFFSET, SEEK_SET); + nread = read(isofd, orig_appdata, 512); + + /* read out md5sum */ + memcpy(mediasum, orig_appdata+13, 32); + mediasum[32] = '\0'; + + /* rewind, compute md5sum */ + lseek(isofd, 0L, SEEK_SET); + + MD5_Init(&md5ctx); + + offset = 0; + + buf = malloc(bufsize * sizeof(unsigned char)); + while (total < isosize - SKIPSECTORS*2048) { + nattempt = MIN( isosize - SKIPSECTORS*2048 - total, bufsize ); + nread = read(isofd, buf, nattempt); + if (nread <= 0) + break; + + /* overwrite md5sum we implanted with original data */ + if (offset < APPDATA_OFFSET && offset+nread >= APPDATA_OFFSET) { + appdata_start_offset = APPDATA_OFFSET - offset; + appdata_end_offset = MIN(appdata_start_offset+MIN(nread, 512), + offset+nread - APPDATA_OFFSET); + len = appdata_end_offset - appdata_start_offset; + memset(buf+appdata_start_offset, ' ', len); + } else if (offset >= APPDATA_OFFSET && offset+nread < APPDATA_OFFSET+512) { + appdata_start_offset = 0; + appdata_end_offset = nread; + len = appdata_end_offset - appdata_start_offset; + memset(buf+appdata_start_offset, ' ', len); + } else if (offset < APPDATA_OFFSET + 512 && offset+nread >= APPDATA_OFFSET+512) { + appdata_start_offset = 0; + appdata_end_offset = APPDATA_OFFSET+512 - offset; + len = appdata_end_offset - appdata_start_offset; + memset(buf+appdata_start_offset, ' ', len); + } + + MD5_Update(&md5ctx, buf, nread); + offset = offset + nread; + } + + free(buf); + + MD5_Final(md5sum, &md5ctx); + + *computedsum = '\0'; + for (i=0; i<16; i++) { + char tmpstr[4]; + snprintf (tmpstr, 4, "%02x", md5sum[i]); + strcat(computedsum, tmpstr); + } + + if (strcmp(mediasum, computedsum)) + return 0; + else + return 1; + } + +#ifdef TESTING +int main(int argc, char **argv) { + int isofd; + int rc; + unsigned char mediasum[33], computedsum[33]; + + printf ("Do not use\n"); + exit(1); + + if (argc < 2) { + printf("Usage: checkisomd5 \n\n"); + exit(1); + } + + isofd = open(argv[1], O_RDWR); + + if (isofd < 0) { + fprintf(stderr, "Error - Unable to open file %s\n\n", argv[1]); + exit(1); + } + + rc = checkmd5sum(isofd, mediasum, computedsum); + printf("%s\n%s\n", mediasum, computedsum); + if ( rc == 0) + printf("Md5sums differ.\n"); + else if (rc > 0) + printf("Md5sums match.\n"); + else + printf("None checksum information in iso, check skipped.\n"); + + close(isofd); +} +#endif diff --git a/isomd5sum/implantisomd5.c b/isomd5sum/implantisomd5.c new file mode 100644 index 000000000..80ac43f7c --- /dev/null +++ b/isomd5sum/implantisomd5.c @@ -0,0 +1,174 @@ +/* simple program to insert a md5sum into application data area of */ +/* an iso9660 image */ +/* Copyright 2001 Red Hat, Inc. */ +/* Michael Fulbright msf@redhat.com */ + +#include +#include +#include +#include +#include + +#include "md5.h" + +#define APPDATA_OFFSET 883 +#define SIZE_OFFSET 84 + +/* number of sectors to ignore at end of iso when computing sum */ +#define SKIPSECTORS 15 + +#define MAX(x, y) ((x > y) ? x : y) +#define MIN(x, y) ((x < y) ? x : y) + +/* finds primary volume descriptor and returns info from it */ +/* mediasum must be a preallocated buffer at least 33 bytes long */ +int parsepvd(int isofd, char *mediasum, long long *isosize) { + unsigned char buf[2048]; + long long offset; + unsigned char *p; + + if (lseek(isofd, (off_t)(16L * 2048L), SEEK_SET) == -1) + return ((long long)-1); + + offset = (16L * 2048L); + for (;1;) { + read(isofd, buf, 2048); + if (buf[0] == 1) + /* found primary volume descriptor */ + break; + else if (buf[0] == 255) + /* hit end and didn't find primary volume descriptor */ + return ((long long)-1); + offset += 2048L; + } + + /* read out md5sum */ +#if 0 + memcpy(mediasum, buf + APPDATA_OFFSET + 13, 32); + mediasum[32] = '\0'; + + for (p=mediasum; *p; p++) + if (*p != ' ') + break; + + /* if the md5sum was all spaces, we didn't find md5sum */ + if (!*p) + return -1; +#endif + + /* get isosize */ + *isosize = (buf[SIZE_OFFSET]*0x1000000+buf[SIZE_OFFSET+1]*0x10000 + + buf[SIZE_OFFSET+2]*0x100 + buf[SIZE_OFFSET+3]) * 2048LL; + + return offset; +} + + + +int main(int argc, char **argv) { + int isofd; + int nread; + int i; + int dirty; + int pvd_offset; + int forceit; + long long isosize; + unsigned char md5sum[16]; + unsigned int total; + unsigned char *fname; + unsigned char buf[2048]; + unsigned char orig_appdata[512]; + unsigned char new_appdata[512]; + unsigned char mediasum[33], computedsum[33]; + char md5str[40]; + MD5_CTX md5ctx; + + if (argc < 2) { + printf("Usage: implantisomd5 [-f] \n\n"); + exit(1); + } + + if (!strncmp(argv[1] , "-f", 3)) { + forceit = 1; + fname = argv[2]; + } else { + forceit = 0; + fname = argv[1]; + } + + isofd = open(fname, O_RDWR); + + if (isofd < 0) { + fprintf(stderr, "Error - Unable to open file %s\n\n", fname); + exit(1); + } + + pvd_offset = parsepvd(isofd, mediasum, &isosize); + if (pvd_offset < 0) { + fprintf(stderr, "Could not find primary volumne!\n\n"); + exit(1); + } + + lseek(isofd, pvd_offset + APPDATA_OFFSET, SEEK_SET); + nread = read(isofd, orig_appdata, 512); + + if (!forceit) { + dirty = 0; + for (i=0; i < 512; i++) + if (orig_appdata[i] != ' ') + dirty = 1; + + if (dirty) { + fprintf(stderr, "Application data has been used - not implanting md5sum!\n"); + exit(1); + } + } + + + lseek(isofd, 0L, SEEK_SET); + + MD5_Init(&md5ctx); + + total = 0; + /* read up to 15 sectors from end, due to problems reading last few */ + /* sectors on burned CDs */ + while (total < isosize - SKIPSECTORS*2048) { + nread = read(isofd, buf, 2048); + if (nread <= 0) + break; + + MD5_Update(&md5ctx, buf, nread); + total = total + nread; + } + + MD5_Final(md5sum, &md5ctx); + + *md5str = '\0'; + for (i=0; i<16; i++) { + char tmpstr[4]; + snprintf (tmpstr, 4, "%02x", md5sum[i]); + strcat(md5str, tmpstr); + } + + printf("Inserting md5sum into iso image...\n"); + printf("md5 = %s\n", md5str); + /* memcpy(new_appdata, orig_appdata, 512); */ + memset(new_appdata, ' ', 512); + memcpy(new_appdata, "ISO MD5SUM = ", 13); + memcpy(new_appdata+13, md5str, 33); + memcpy(new_appdata+47, "THIS IS NOT THE SAME AS RUNNING MD5SUM ON THIS ISO!!", 51); + + i = lseek(isofd, pvd_offset + APPDATA_OFFSET, SEEK_SET); + if (i<0) + printf("seek failed\n"); + + i = write(isofd, new_appdata, 512); + if (i<0) { + printf("write failed %d\n", i); + perror(""); + } + + close(isofd); + + printf("Done!\n"); +} diff --git a/isomd5sum/md5.c b/isomd5sum/md5.c new file mode 100644 index 000000000..fe032ebba --- /dev/null +++ b/isomd5sum/md5.c @@ -0,0 +1,256 @@ +/* + * $Id$ + * + * 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 MD5Init, call MD5Update as + * needed on buffers full of bytes, and then call MD5Final, which + * will fill a supplied 16-byte array with the digest. + * + */ + +#include +#include "md5.h" + +#ifndef HIGHFIRST +#define byteReverse(buf, len) /* Nothing */ +#else +static void byteReverse(unsigned char *buf, unsigned longs); + +#ifndef ASM_MD5 +/* + * Note: this code is harmless on little-endian machines. + */ +static void byteReverse(unsigned char *buf, unsigned longs) +{ + uint32 t; + do { + t = (uint32) ((unsigned) buf[3] << 8 | buf[2]) << 16 | + ((unsigned) buf[1] << 8 | buf[0]); + *(uint32 *) buf = t; + buf += 4; + } while (--longs); +} +#endif +#endif + +/* + * Start MD5 accumulation. Set bit count to 0 and buffer to mysterious + * initialization constants. + */ +void MD5_Init(struct MD5Context *ctx) +{ + ctx->buf[0] = 0x67452301U; + ctx->buf[1] = 0xefcdab89U; + ctx->buf[2] = 0x98badcfeU; + ctx->buf[3] = 0x10325476U; + + ctx->bits[0] = 0; + ctx->bits[1] = 0; +} + +/* + * Update context to reflect the concatenation of another buffer full + * of bytes. + */ +void MD5_Update(struct MD5Context *ctx, unsigned const char *buf, unsigned len) +{ + uint32 t; + + /* Update bitcount */ + + t = ctx->bits[0]; + if ((ctx->bits[0] = t + ((uint32) 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) { + unsigned char *p = (unsigned char *) ctx->in + t; + + t = 64 - t; + if (len < t) { + memcpy(p, buf, len); + return; + } + memcpy(p, buf, t); + byteReverse(ctx->in, 16); + MD5_Transform(ctx->buf, (uint32 *) ctx->in); + buf += t; + len -= t; + } + /* Process data in 64-byte chunks */ + + while (len >= 64) { + memcpy(ctx->in, buf, 64); + byteReverse(ctx->in, 16); + MD5_Transform(ctx->buf, (uint32 *) 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) + */ +void MD5_Final(unsigned char digest[16], struct MD5Context *ctx) +{ + unsigned count; + unsigned char *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); + byteReverse(ctx->in, 16); + MD5_Transform(ctx->buf, (uint32 *) 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); + } + byteReverse(ctx->in, 14); + + /* Append length in bits and transform */ + ((uint32 *) ctx->in)[14] = ctx->bits[0]; + ((uint32 *) ctx->in)[15] = ctx->bits[1]; + + MD5_Transform(ctx->buf, (uint32 *) ctx->in); + byteReverse((unsigned char *) ctx->buf, 4); + memcpy(digest, ctx->buf, 16); + memset(ctx, 0, sizeof(ctx)); /* In case it's sensitive */ +} + +#ifndef ASM_MD5 + +/* 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<>(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. MD5Update blocks + * the data and converts bytes into longwords for this routine. + */ +void MD5_Transform(uint32 buf[4], uint32 const in[16]) +{ + register uint32 a, b, c, d; + + a = buf[0]; + b = buf[1]; + c = buf[2]; + d = buf[3]; + + MD5STEP(F1, a, b, c, d, in[0] + 0xd76aa478U, 7); + MD5STEP(F1, d, a, b, c, in[1] + 0xe8c7b756U, 12); + MD5STEP(F1, c, d, a, b, in[2] + 0x242070dbU, 17); + MD5STEP(F1, b, c, d, a, in[3] + 0xc1bdceeeU, 22); + MD5STEP(F1, a, b, c, d, in[4] + 0xf57c0fafU, 7); + MD5STEP(F1, d, a, b, c, in[5] + 0x4787c62aU, 12); + MD5STEP(F1, c, d, a, b, in[6] + 0xa8304613U, 17); + MD5STEP(F1, b, c, d, a, in[7] + 0xfd469501U, 22); + MD5STEP(F1, a, b, c, d, in[8] + 0x698098d8U, 7); + MD5STEP(F1, d, a, b, c, in[9] + 0x8b44f7afU, 12); + MD5STEP(F1, c, d, a, b, in[10] + 0xffff5bb1U, 17); + MD5STEP(F1, b, c, d, a, in[11] + 0x895cd7beU, 22); + MD5STEP(F1, a, b, c, d, in[12] + 0x6b901122U, 7); + MD5STEP(F1, d, a, b, c, in[13] + 0xfd987193U, 12); + MD5STEP(F1, c, d, a, b, in[14] + 0xa679438eU, 17); + MD5STEP(F1, b, c, d, a, in[15] + 0x49b40821U, 22); + + MD5STEP(F2, a, b, c, d, in[1] + 0xf61e2562U, 5); + MD5STEP(F2, d, a, b, c, in[6] + 0xc040b340U, 9); + MD5STEP(F2, c, d, a, b, in[11] + 0x265e5a51U, 14); + MD5STEP(F2, b, c, d, a, in[0] + 0xe9b6c7aaU, 20); + MD5STEP(F2, a, b, c, d, in[5] + 0xd62f105dU, 5); + MD5STEP(F2, d, a, b, c, in[10] + 0x02441453U, 9); + MD5STEP(F2, c, d, a, b, in[15] + 0xd8a1e681U, 14); + MD5STEP(F2, b, c, d, a, in[4] + 0xe7d3fbc8U, 20); + MD5STEP(F2, a, b, c, d, in[9] + 0x21e1cde6U, 5); + MD5STEP(F2, d, a, b, c, in[14] + 0xc33707d6U, 9); + MD5STEP(F2, c, d, a, b, in[3] + 0xf4d50d87U, 14); + MD5STEP(F2, b, c, d, a, in[8] + 0x455a14edU, 20); + MD5STEP(F2, a, b, c, d, in[13] + 0xa9e3e905U, 5); + MD5STEP(F2, d, a, b, c, in[2] + 0xfcefa3f8U, 9); + MD5STEP(F2, c, d, a, b, in[7] + 0x676f02d9U, 14); + MD5STEP(F2, b, c, d, a, in[12] + 0x8d2a4c8aU, 20); + + MD5STEP(F3, a, b, c, d, in[5] + 0xfffa3942U, 4); + MD5STEP(F3, d, a, b, c, in[8] + 0x8771f681U, 11); + MD5STEP(F3, c, d, a, b, in[11] + 0x6d9d6122U, 16); + MD5STEP(F3, b, c, d, a, in[14] + 0xfde5380cU, 23); + MD5STEP(F3, a, b, c, d, in[1] + 0xa4beea44U, 4); + MD5STEP(F3, d, a, b, c, in[4] + 0x4bdecfa9U, 11); + MD5STEP(F3, c, d, a, b, in[7] + 0xf6bb4b60U, 16); + MD5STEP(F3, b, c, d, a, in[10] + 0xbebfbc70U, 23); + MD5STEP(F3, a, b, c, d, in[13] + 0x289b7ec6U, 4); + MD5STEP(F3, d, a, b, c, in[0] + 0xeaa127faU, 11); + MD5STEP(F3, c, d, a, b, in[3] + 0xd4ef3085U, 16); + MD5STEP(F3, b, c, d, a, in[6] + 0x04881d05U, 23); + MD5STEP(F3, a, b, c, d, in[9] + 0xd9d4d039U, 4); + MD5STEP(F3, d, a, b, c, in[12] + 0xe6db99e5U, 11); + MD5STEP(F3, c, d, a, b, in[15] + 0x1fa27cf8U, 16); + MD5STEP(F3, b, c, d, a, in[2] + 0xc4ac5665U, 23); + + MD5STEP(F4, a, b, c, d, in[0] + 0xf4292244U, 6); + MD5STEP(F4, d, a, b, c, in[7] + 0x432aff97U, 10); + MD5STEP(F4, c, d, a, b, in[14] + 0xab9423a7U, 15); + MD5STEP(F4, b, c, d, a, in[5] + 0xfc93a039U, 21); + MD5STEP(F4, a, b, c, d, in[12] + 0x655b59c3U, 6); + MD5STEP(F4, d, a, b, c, in[3] + 0x8f0ccc92U, 10); + MD5STEP(F4, c, d, a, b, in[10] + 0xffeff47dU, 15); + MD5STEP(F4, b, c, d, a, in[1] + 0x85845dd1U, 21); + MD5STEP(F4, a, b, c, d, in[8] + 0x6fa87e4fU, 6); + MD5STEP(F4, d, a, b, c, in[15] + 0xfe2ce6e0U, 10); + MD5STEP(F4, c, d, a, b, in[6] + 0xa3014314U, 15); + MD5STEP(F4, b, c, d, a, in[13] + 0x4e0811a1U, 21); + MD5STEP(F4, a, b, c, d, in[4] + 0xf7537e82U, 6); + MD5STEP(F4, d, a, b, c, in[11] + 0xbd3af235U, 10); + MD5STEP(F4, c, d, a, b, in[2] + 0x2ad7d2bbU, 15); + MD5STEP(F4, b, c, d, a, in[9] + 0xeb86d391U, 21); + + buf[0] += a; + buf[1] += b; + buf[2] += c; + buf[3] += d; +} + +#endif diff --git a/isomd5sum/md5.h b/isomd5sum/md5.h new file mode 100644 index 000000000..bacfb534a --- /dev/null +++ b/isomd5sum/md5.h @@ -0,0 +1,25 @@ + +#ifndef MD5_H +#define MD5_H + +#include + +typedef u_int32_t uint32; + +struct MD5Context { + uint32 buf[4]; + uint32 bits[2]; + unsigned char in[64]; +}; + +void MD5_Init(struct MD5Context *); +void MD5_Update(struct MD5Context *, unsigned const char *, unsigned); +void MD5_Final(unsigned char digest[16], struct MD5Context *); + +/* + * This is needed to make RSAREF happy on some MS-DOS compilers. + */ + +typedef struct MD5Context MD5_CTX; + +#endif /* MD5_H */ -- cgit