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authorSam Varshavchik2013-08-19 16:39:41 -0400
committerSam Varshavchik2013-08-25 14:43:51 -0400
commit9c45d9ad13fdf439d44d7443ae75da15ea0223ed (patch)
tree7a81a04cb51efb078ee350859a64be2ebc6b8813 /md5/md5.c
parenta9520698b770168d1f33d6301463bb70a19655ec (diff)
downloadcourier-libs-9c45d9ad13fdf439d44d7443ae75da15ea0223ed.tar.bz2
Initial checkin
Imported from subversion report, converted to git. Updated all paths in scripts and makefiles, reflecting the new directory hierarchy.
Diffstat (limited to 'md5/md5.c')
-rw-r--r--md5/md5.c278
1 files changed, 278 insertions, 0 deletions
diff --git a/md5/md5.c b/md5/md5.c
new file mode 100644
index 0000000..f718389
--- /dev/null
+++ b/md5/md5.c
@@ -0,0 +1,278 @@
+/*
+** Copyright 1998 - 2000 Double Precision, Inc.
+** See COPYING for distribution information.
+*/
+
+#define MD5_INTERNAL
+#include "md5.h"
+#include <string.h>
+#include <stdlib.h>
+
+
+#define MD5_BYTE unsigned char
+
+#define MD5_ROL(w,n) \
+ ( (w) << (n) | ( (w) >> (32-(n)) ) )
+
+static MD5_WORD T[64]={
+0xd76aa478, 0xe8c7b756, 0x242070db, 0xc1bdceee,
+0xf57c0faf, 0x4787c62a, 0xa8304613, 0xfd469501,
+0x698098d8, 0x8b44f7af, 0xffff5bb1, 0x895cd7be,
+0x6b901122, 0xfd987193, 0xa679438e, 0x49b40821,
+0xf61e2562, 0xc040b340, 0x265e5a51, 0xe9b6c7aa,
+0xd62f105d, 0x2441453, 0xd8a1e681, 0xe7d3fbc8,
+0x21e1cde6, 0xc33707d6, 0xf4d50d87, 0x455a14ed,
+0xa9e3e905, 0xfcefa3f8, 0x676f02d9, 0x8d2a4c8a,
+0xfffa3942, 0x8771f681, 0x6d9d6122, 0xfde5380c,
+0xa4beea44, 0x4bdecfa9, 0xf6bb4b60, 0xbebfbc70,
+0x289b7ec6, 0xeaa127fa, 0xd4ef3085, 0x4881d05,
+0xd9d4d039, 0xe6db99e5, 0x1fa27cf8, 0xc4ac5665,
+0xf4292244, 0x432aff97, 0xab9423a7, 0xfc93a039,
+0x655b59c3, 0x8f0ccc92, 0xffeff47d, 0x85845dd1,
+0x6fa87e4f, 0xfe2ce6e0, 0xa3014314, 0x4e0811a1,
+0xf7537e82, 0xbd3af235, 0x2ad7d2bb, 0xeb86d391};
+
+void md5_context_init(struct MD5_CONTEXT *c)
+{
+ if (sizeof(MD5_WORD) != 4) abort();
+
+ c->A=0x67452301;
+ c->B=0xefcdab89;
+ c->C=0x98badcfe;
+ c->D=0x10325476;
+
+ c->blk_ptr=0;
+}
+
+void md5_context_hash(struct MD5_CONTEXT *c,
+ const unsigned char blk[MD5_BLOCK_SIZE])
+{
+MD5_WORD x[16];
+unsigned i, j;
+MD5_WORD A, B, C, D;
+MD5_WORD zz;
+
+ for (i=j=0; i<16; i++)
+ {
+ MD5_WORD w=(MD5_WORD)blk[j++];
+
+ w |= (MD5_WORD)blk[j++] << 8;
+ w |= (MD5_WORD)blk[j++] << 16;
+ w |= (MD5_WORD)blk[j++] << 24;
+ x[i]= w;
+ }
+
+#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))))
+
+ A=c->A;
+ B=c->B;
+ C=c->C;
+ D=c->D;
+
+#define ROUND1(a,b,c,d,k,s,i) \
+ { zz=(a + F(b,c,d) + x[k] + T[i]); a=b+MD5_ROL(zz,s); }
+
+ ROUND1(A,B,C,D,0,7,0);
+ ROUND1(D,A,B,C,1,12,1);
+ ROUND1(C,D,A,B,2,17,2);
+ ROUND1(B,C,D,A,3,22,3);
+ ROUND1(A,B,C,D,4,7,4);
+ ROUND1(D,A,B,C,5,12,5);
+ ROUND1(C,D,A,B,6,17,6);
+ ROUND1(B,C,D,A,7,22,7);
+ ROUND1(A,B,C,D,8,7,8);
+ ROUND1(D,A,B,C,9,12,9);
+ ROUND1(C,D,A,B,10,17,10);
+ ROUND1(B,C,D,A,11,22,11);
+ ROUND1(A,B,C,D,12,7,12);
+ ROUND1(D,A,B,C,13,12,13);
+ ROUND1(C,D,A,B,14,17,14);
+ ROUND1(B,C,D,A,15,22,15);
+
+#define ROUND2(a,b,c,d,k,s,i) \
+ { zz=(a + G(b,c,d) + x[k] + T[i]); a = b + MD5_ROL(zz,s); }
+
+ ROUND2(A,B,C,D,1,5,16);
+ ROUND2(D,A,B,C,6,9,17);
+ ROUND2(C,D,A,B,11,14,18);
+ ROUND2(B,C,D,A,0,20,19);
+ ROUND2(A,B,C,D,5,5,20);
+ ROUND2(D,A,B,C,10,9,21);
+ ROUND2(C,D,A,B,15,14,22);
+ ROUND2(B,C,D,A,4,20,23);
+ ROUND2(A,B,C,D,9,5,24);
+ ROUND2(D,A,B,C,14,9,25);
+ ROUND2(C,D,A,B,3,14,26);
+ ROUND2(B,C,D,A,8,20,27);
+ ROUND2(A,B,C,D,13,5,28);
+ ROUND2(D,A,B,C,2,9,29);
+ ROUND2(C,D,A,B,7,14,30);
+ ROUND2(B,C,D,A,12,20,31);
+
+#define ROUND3(a,b,c,d,k,s,i) \
+ { zz=(a + H(b,c,d) + x[k] + T[i]); a = b + MD5_ROL(zz,s); }
+
+ ROUND3(A,B,C,D,5,4,32);
+ ROUND3(D,A,B,C,8,11,33);
+ ROUND3(C,D,A,B,11,16,34);
+ ROUND3(B,C,D,A,14,23,35);
+ ROUND3(A,B,C,D,1,4,36);
+ ROUND3(D,A,B,C,4,11,37);
+ ROUND3(C,D,A,B,7,16,38);
+ ROUND3(B,C,D,A,10,23,39);
+ ROUND3(A,B,C,D,13,4,40);
+ ROUND3(D,A,B,C,0,11,41);
+ ROUND3(C,D,A,B,3,16,42);
+ ROUND3(B,C,D,A,6,23,43);
+ ROUND3(A,B,C,D,9,4,44);
+ ROUND3(D,A,B,C,12,11,45);
+ ROUND3(C,D,A,B,15,16,46);
+ ROUND3(B,C,D,A,2,23,47);
+
+#define ROUND4(a,b,c,d,k,s,i) \
+ { zz=(a + I(b,c,d) + x[k] + T[i]); a = b + MD5_ROL(zz,s); }
+
+ ROUND4(A,B,C,D,0,6,48);
+ ROUND4(D,A,B,C,7,10,49);
+ ROUND4(C,D,A,B,14,15,50);
+ ROUND4(B,C,D,A,5,21,51);
+ ROUND4(A,B,C,D,12,6,52);
+ ROUND4(D,A,B,C,3,10,53);
+ ROUND4(C,D,A,B,10,15,54);
+ ROUND4(B,C,D,A,1,21,55);
+ ROUND4(A,B,C,D,8,6,56);
+ ROUND4(D,A,B,C,15,10,57);
+ ROUND4(C,D,A,B,6,15,58);
+ ROUND4(B,C,D,A,13,21,59);
+ ROUND4(A,B,C,D,4,6,60);
+ ROUND4(D,A,B,C,11,10,61);
+ ROUND4(C,D,A,B,2,15,62);
+ ROUND4(B,C,D,A,9,21,63);
+
+ c->A += A;
+ c->B += B;
+ c->C += C;
+ c->D += D;
+}
+
+void md5_context_hashstream(struct MD5_CONTEXT *c, const void *p, unsigned l)
+{
+const unsigned char *cp=(const unsigned char *)p;
+unsigned ll;
+
+ while (l)
+ {
+ if (c->blk_ptr == 0 && l >= MD5_BLOCK_SIZE)
+ {
+ md5_context_hash(c, cp);
+ cp += MD5_BLOCK_SIZE;
+ l -= MD5_BLOCK_SIZE;
+ continue;
+ }
+
+ ll=l;
+ if (ll > MD5_BLOCK_SIZE - c->blk_ptr)
+ ll=MD5_BLOCK_SIZE - c->blk_ptr;
+ memcpy(c->blk + c->blk_ptr, cp, ll);
+ c->blk_ptr += ll;
+ cp += ll;
+ l -= ll;
+ if (c->blk_ptr >= MD5_BLOCK_SIZE)
+ {
+ md5_context_hash(c, c->blk);
+ c->blk_ptr=0;
+ }
+ }
+}
+
+void md5_context_endstream(struct MD5_CONTEXT *c, unsigned long ll)
+{
+unsigned char buf[8];
+
+static unsigned char zero[MD5_BLOCK_SIZE-8];
+MD5_WORD l;
+
+ buf[0]=0x80;
+ md5_context_hashstream(c, buf, 1);
+ while (c->blk_ptr != MD5_BLOCK_SIZE - 8)
+ {
+ if (c->blk_ptr > MD5_BLOCK_SIZE - 8)
+ {
+ md5_context_hashstream(c, zero,
+ MD5_BLOCK_SIZE - c->blk_ptr);
+ continue;
+ }
+ md5_context_hashstream(c, zero,
+ MD5_BLOCK_SIZE - 8 - c->blk_ptr);
+ }
+
+ l= ll;
+
+ l <<= 3;
+
+ buf[0]=l;
+ l >>= 8;
+ buf[1]=l;
+ l >>= 8;
+ buf[2]=l;
+ l >>= 8;
+ buf[3]=l;
+
+ l= ll;
+ l >>= 29;
+ buf[4]=l;
+ l >>= 8;
+ buf[5]=l;
+ l >>= 8;
+ buf[6]=l;
+ l >>= 8;
+ buf[7]=l;
+
+ md5_context_hashstream(c, buf, 8);
+}
+
+void md5_context_digest(struct MD5_CONTEXT *c, MD5_DIGEST d)
+{
+unsigned char *dp=d;
+MD5_WORD w;
+
+#define PUT(c) (w=(c), *dp++ = w, w >>= 8, *dp++ = w, w >>= 8, *dp++ = w, w >>= 8, *dp++ = w)
+
+ PUT(c->A);
+ PUT(c->B);
+ PUT(c->C);
+ PUT(c->D);
+#undef PUT
+}
+
+void md5_context_restore(struct MD5_CONTEXT *c, const MD5_DIGEST d)
+{
+const unsigned char *dp=(unsigned char *)d+MD5_DIGEST_SIZE;
+MD5_WORD w;
+
+#define GET \
+ w=*--dp; w=(w << 8) | *--dp; w=(w << 8) | *--dp; w=(w << 8) | *--dp;
+
+ GET
+ c->D=w;
+ GET
+ c->C=w;
+ GET
+ c->B=w;
+ GET
+ c->A=w;
+ c->blk_ptr=0;
+}
+
+void md5_digest(const void *msg, unsigned int len, MD5_DIGEST d)
+{
+struct MD5_CONTEXT c;
+
+ md5_context_init(&c);
+ md5_context_hashstream(&c, msg, len);
+ md5_context_endstream(&c, len);
+ md5_context_digest(&c, d);
+}