summaryrefslogtreecommitdiff
path: root/crypt/md5.c
diff options
context:
space:
mode:
Diffstat (limited to 'crypt/md5.c')
-rw-r--r--crypt/md5.c184
1 files changed, 7 insertions, 177 deletions
diff --git a/crypt/md5.c b/crypt/md5.c
index 3d2e79b905..16f3cda79c 100644
--- a/crypt/md5.c
+++ b/crypt/md5.c
@@ -44,7 +44,6 @@
/* We need to keep the namespace clean so define the MD5 function
protected using leading __ . */
# define md5_init_ctx __md5_init_ctx
-# define md5_process_block __md5_process_block
# define md5_process_bytes __md5_process_bytes
# define md5_finish_ctx __md5_finish_ctx
# define md5_read_ctx __md5_read_ctx
@@ -126,7 +125,7 @@ md5_finish_ctx (ctx, resbuf)
(ctx->total[0] >> 29));
/* Process last bytes. */
- md5_process_block (ctx->buffer, bytes + pad + 8, ctx);
+ __md5_process_block (ctx->buffer, bytes + pad + 8, ctx);
return md5_read_ctx (ctx, resbuf);
}
@@ -175,7 +174,7 @@ md5_stream (stream, resblock)
/* Process buffer with BLOCKSIZE bytes. Note that
BLOCKSIZE % 64 == 0
*/
- md5_process_block (buffer, BLOCKSIZE, &ctx);
+ __md5_process_block (buffer, BLOCKSIZE, &ctx);
}
/* Add the last bytes if necessary. */
@@ -228,7 +227,7 @@ md5_process_bytes (buffer, len, ctx)
if (ctx->buflen > 64)
{
- md5_process_block (ctx->buffer, ctx->buflen & ~63, ctx);
+ __md5_process_block (ctx->buffer, ctx->buflen & ~63, ctx);
ctx->buflen &= 63;
/* The regions in the following copy operation cannot overlap. */
@@ -254,14 +253,14 @@ md5_process_bytes (buffer, len, ctx)
if (UNALIGNED_P (buffer))
while (len > 64)
{
- md5_process_block (memcpy (ctx->buffer, buffer, 64), 64, ctx);
+ __md5_process_block (memcpy (ctx->buffer, buffer, 64), 64, ctx);
buffer = (const char *) buffer + 64;
len -= 64;
}
else
#endif
{
- md5_process_block (buffer, len & ~63, ctx);
+ __md5_process_block (buffer, len & ~63, ctx);
buffer = (const char *) buffer + (len & ~63);
len &= 63;
}
@@ -276,7 +275,7 @@ md5_process_bytes (buffer, len, ctx)
left_over += len;
if (left_over >= 64)
{
- md5_process_block (ctx->buffer, 64, ctx);
+ __md5_process_block (ctx->buffer, 64, ctx);
left_over -= 64;
memcpy (ctx->buffer, &ctx->buffer[64], left_over);
}
@@ -284,173 +283,4 @@ md5_process_bytes (buffer, len, ctx)
}
}
-
-/* These are the four functions used in the four steps of the MD5 algorithm
- and defined in the RFC 1321. The first function is a little bit optimized
- (as found in Colin Plumbs public domain implementation). */
-/* #define FF(b, c, d) ((b & c) | (~b & d)) */
-#define FF(b, c, d) (d ^ (b & (c ^ d)))
-#define FG(b, c, d) FF (d, b, c)
-#define FH(b, c, d) (b ^ c ^ d)
-#define FI(b, c, d) (c ^ (b | ~d))
-
-/* Process LEN bytes of BUFFER, accumulating context into CTX.
- It is assumed that LEN % 64 == 0. */
-
-void
-md5_process_block (buffer, len, ctx)
- const void *buffer;
- size_t len;
- struct md5_ctx *ctx;
-{
- md5_uint32 correct_words[16];
- const md5_uint32 *words = buffer;
- size_t nwords = len / sizeof (md5_uint32);
- const md5_uint32 *endp = words + nwords;
- md5_uint32 A = ctx->A;
- md5_uint32 B = ctx->B;
- md5_uint32 C = ctx->C;
- md5_uint32 D = ctx->D;
- md5_uint32 lolen = len;
-
- /* First increment the byte count. RFC 1321 specifies the possible
- length of the file up to 2^64 bits. Here we only compute the
- number of bytes. Do a double word increment. */
- ctx->total[0] += lolen;
- ctx->total[1] += (len >> 31 >> 1) + (ctx->total[0] < lolen);
-
- /* Process all bytes in the buffer with 64 bytes in each round of
- the loop. */
- while (words < endp)
- {
- md5_uint32 *cwp = correct_words;
- md5_uint32 A_save = A;
- md5_uint32 B_save = B;
- md5_uint32 C_save = C;
- md5_uint32 D_save = D;
-
- /* First round: using the given function, the context and a constant
- the next context is computed. Because the algorithms processing
- unit is a 32-bit word and it is determined to work on words in
- little endian byte order we perhaps have to change the byte order
- before the computation. To reduce the work for the next steps
- we store the swapped words in the array CORRECT_WORDS. */
-
-#define OP(a, b, c, d, s, T) \
- do \
- { \
- a += FF (b, c, d) + (*cwp++ = SWAP (*words)) + T; \
- ++words; \
- CYCLIC (a, s); \
- a += b; \
- } \
- while (0)
-
- /* It is unfortunate that C does not provide an operator for
- cyclic rotation. Hope the C compiler is smart enough. */
-#define CYCLIC(w, s) (w = (w << s) | (w >> (32 - s)))
-
- /* Before we start, one word to the strange constants.
- They are defined in RFC 1321 as
-
- T[i] = (int) (4294967296.0 * fabs (sin (i))), i=1..64
- */
-
- /* Round 1. */
- OP (A, B, C, D, 7, 0xd76aa478);
- OP (D, A, B, C, 12, 0xe8c7b756);
- OP (C, D, A, B, 17, 0x242070db);
- OP (B, C, D, A, 22, 0xc1bdceee);
- OP (A, B, C, D, 7, 0xf57c0faf);
- OP (D, A, B, C, 12, 0x4787c62a);
- OP (C, D, A, B, 17, 0xa8304613);
- OP (B, C, D, A, 22, 0xfd469501);
- OP (A, B, C, D, 7, 0x698098d8);
- OP (D, A, B, C, 12, 0x8b44f7af);
- OP (C, D, A, B, 17, 0xffff5bb1);
- OP (B, C, D, A, 22, 0x895cd7be);
- OP (A, B, C, D, 7, 0x6b901122);
- OP (D, A, B, C, 12, 0xfd987193);
- OP (C, D, A, B, 17, 0xa679438e);
- OP (B, C, D, A, 22, 0x49b40821);
-
- /* For the second to fourth round we have the possibly swapped words
- in CORRECT_WORDS. Redefine the macro to take an additional first
- argument specifying the function to use. */
-#undef OP
-#define OP(f, a, b, c, d, k, s, T) \
- do \
- { \
- a += f (b, c, d) + correct_words[k] + T; \
- CYCLIC (a, s); \
- a += b; \
- } \
- while (0)
-
- /* Round 2. */
- OP (FG, A, B, C, D, 1, 5, 0xf61e2562);
- OP (FG, D, A, B, C, 6, 9, 0xc040b340);
- OP (FG, C, D, A, B, 11, 14, 0x265e5a51);
- OP (FG, B, C, D, A, 0, 20, 0xe9b6c7aa);
- OP (FG, A, B, C, D, 5, 5, 0xd62f105d);
- OP (FG, D, A, B, C, 10, 9, 0x02441453);
- OP (FG, C, D, A, B, 15, 14, 0xd8a1e681);
- OP (FG, B, C, D, A, 4, 20, 0xe7d3fbc8);
- OP (FG, A, B, C, D, 9, 5, 0x21e1cde6);
- OP (FG, D, A, B, C, 14, 9, 0xc33707d6);
- OP (FG, C, D, A, B, 3, 14, 0xf4d50d87);
- OP (FG, B, C, D, A, 8, 20, 0x455a14ed);
- OP (FG, A, B, C, D, 13, 5, 0xa9e3e905);
- OP (FG, D, A, B, C, 2, 9, 0xfcefa3f8);
- OP (FG, C, D, A, B, 7, 14, 0x676f02d9);
- OP (FG, B, C, D, A, 12, 20, 0x8d2a4c8a);
-
- /* Round 3. */
- OP (FH, A, B, C, D, 5, 4, 0xfffa3942);
- OP (FH, D, A, B, C, 8, 11, 0x8771f681);
- OP (FH, C, D, A, B, 11, 16, 0x6d9d6122);
- OP (FH, B, C, D, A, 14, 23, 0xfde5380c);
- OP (FH, A, B, C, D, 1, 4, 0xa4beea44);
- OP (FH, D, A, B, C, 4, 11, 0x4bdecfa9);
- OP (FH, C, D, A, B, 7, 16, 0xf6bb4b60);
- OP (FH, B, C, D, A, 10, 23, 0xbebfbc70);
- OP (FH, A, B, C, D, 13, 4, 0x289b7ec6);
- OP (FH, D, A, B, C, 0, 11, 0xeaa127fa);
- OP (FH, C, D, A, B, 3, 16, 0xd4ef3085);
- OP (FH, B, C, D, A, 6, 23, 0x04881d05);
- OP (FH, A, B, C, D, 9, 4, 0xd9d4d039);
- OP (FH, D, A, B, C, 12, 11, 0xe6db99e5);
- OP (FH, C, D, A, B, 15, 16, 0x1fa27cf8);
- OP (FH, B, C, D, A, 2, 23, 0xc4ac5665);
-
- /* Round 4. */
- OP (FI, A, B, C, D, 0, 6, 0xf4292244);
- OP (FI, D, A, B, C, 7, 10, 0x432aff97);
- OP (FI, C, D, A, B, 14, 15, 0xab9423a7);
- OP (FI, B, C, D, A, 5, 21, 0xfc93a039);
- OP (FI, A, B, C, D, 12, 6, 0x655b59c3);
- OP (FI, D, A, B, C, 3, 10, 0x8f0ccc92);
- OP (FI, C, D, A, B, 10, 15, 0xffeff47d);
- OP (FI, B, C, D, A, 1, 21, 0x85845dd1);
- OP (FI, A, B, C, D, 8, 6, 0x6fa87e4f);
- OP (FI, D, A, B, C, 15, 10, 0xfe2ce6e0);
- OP (FI, C, D, A, B, 6, 15, 0xa3014314);
- OP (FI, B, C, D, A, 13, 21, 0x4e0811a1);
- OP (FI, A, B, C, D, 4, 6, 0xf7537e82);
- OP (FI, D, A, B, C, 11, 10, 0xbd3af235);
- OP (FI, C, D, A, B, 2, 15, 0x2ad7d2bb);
- OP (FI, B, C, D, A, 9, 21, 0xeb86d391);
-
- /* Add the starting values of the context. */
- A += A_save;
- B += B_save;
- C += C_save;
- D += D_save;
- }
-
- /* Put checksum in context given as argument. */
- ctx->A = A;
- ctx->B = B;
- ctx->C = C;
- ctx->D = D;
-}
+#include <md5-block.c>
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-01 04:13:37 +0000