*
* based on http://ubiqx.org/libcifs/source/Auth/MD5.c
* from Christopher R. Hertel (crh@ubiqx.mn.org)
- * Simplified, cleaned and IMO redundant comments removed by michael.
+ * Simplified, cleaned and IMO redundant comments removed by Michael.
*
* If you use gcc, then version 4.1 or later and -fomit-frame-pointer is
* strongly recommended.
*/
#include <stdint.h>
+
#include "bswap.h"
#include "intreadwrite.h"
-#include "md5.h"
#include "mem.h"
+#include "md5.h"
-typedef struct AVMD5{
+typedef struct AVMD5 {
uint64_t len;
uint8_t block[64];
uint32_t ABCD[4];
} AVMD5;
-#if FF_API_CONTEXT_SIZE
-const int av_md5_size = sizeof(AVMD5);
-#endif
-
struct AVMD5 *av_md5_alloc(void)
{
return av_mallocz(sizeof(struct AVMD5));
0xf7537e82, 0xbd3af235, 0x2ad7d2bb, 0xeb86d391,
};
-#define CORE(i, a, b, c, d) do { \
- t = S[i >> 4][i & 3]; \
+#define CORE(i, a, b, c, d) \
+ do { \
+ t = S[i >> 4][i & 3]; \
a += T[i]; \
\
if (i < 32) { \
- if (i < 16) a += (d ^ (b & (c ^ d))) + X[ i & 15]; \
- else a += (c ^ (d & (c ^ b))) + X[(1 + 5*i) & 15]; \
+ if (i < 16) \
+ a += (d ^ (b & (c ^ d))) + X[i & 15]; \
+ else \
+ a += (c ^ (d & (c ^ b))) + X[(1 + 5 * i) & 15]; \
} else { \
- if (i < 48) a += (b ^ c ^ d) + X[(5 + 3*i) & 15]; \
- else a += (c ^ (b | ~d)) + X[( 7*i) & 15]; \
+ if (i < 48) \
+ a += (b ^ c ^ d) + X[(5 + 3 * i) & 15]; \
+ else \
+ a += (c ^ (b | ~d)) + X[(7 * i) & 15]; \
} \
a = b + (a << t | a >> (32 - t)); \
} while (0)
}
#else
#define CORE2(i) \
- CORE( i, a,b,c,d); CORE((i+1),d,a,b,c); \
- CORE((i+2),c,d,a,b); CORE((i+3),b,c,d,a)
-#define CORE4(i) CORE2(i); CORE2((i+4)); CORE2((i+8)); CORE2((i+12))
- CORE4(0); CORE4(16); CORE4(32); CORE4(48);
+ CORE(i, a, b, c, d); CORE((i + 1), d, a, b, c); \
+ CORE((i + 2), c, d, a, b); CORE((i + 3), b, c, d, a)
+#define CORE4(i) CORE2(i); CORE2((i + 4)); CORE2((i + 8)); CORE2((i + 12))
+ CORE4(0);
+ CORE4(16);
+ CORE4(32);
+ CORE4(48);
#endif
ABCD[0] += d;
ctx->ABCD[3] = 0x67452301;
}
+#if FF_API_CRYPTO_SIZE_T
void av_md5_update(AVMD5 *ctx, const uint8_t *src, const int len)
+#else
+void av_md5_update(AVMD5 *ctx, const uint8_t *src, size_t len)
+#endif
{
int i, j;
- j = ctx->len & 63;
+ j = ctx->len & 63;
ctx->len += len;
for (i = 0; i < len; i++) {
while ((ctx->len & 63) != 56)
av_md5_update(ctx, "", 1);
- av_md5_update(ctx, (uint8_t *)&finalcount, 8);
+ av_md5_update(ctx, (uint8_t *) &finalcount, 8);
for (i = 0; i < 4; i++)
- AV_WL32(dst + 4*i, ctx->ABCD[3 - i]);
+ AV_WL32(dst + 4 * i, ctx->ABCD[3 - i]);
}
+#if FF_API_CRYPTO_SIZE_T
void av_md5_sum(uint8_t *dst, const uint8_t *src, const int len)
+#else
+void av_md5_sum(uint8_t *dst, const uint8_t *src, size_t len)
+#endif
{
AVMD5 ctx;
av_md5_update(&ctx, src, len);
av_md5_final(&ctx, dst);
}
-
-#ifdef TEST
-#undef printf
-#include <stdio.h>
-
-static void print_md5(uint8_t *md5)
-{
- int i;
- for (i = 0; i < 16; i++)
- printf("%02x", md5[i]);
- printf("\n");
-}
-
-int main(void){
- uint8_t md5val[16];
- int i;
- uint8_t in[1000];
-
- for (i = 0; i < 1000; i++)
- in[i] = i * i;
- av_md5_sum(md5val, in, 1000); print_md5(md5val);
- av_md5_sum(md5val, in, 63); print_md5(md5val);
- av_md5_sum(md5val, in, 64); print_md5(md5val);
- av_md5_sum(md5val, in, 65); print_md5(md5val);
- for (i = 0; i < 1000; i++)
- in[i] = i % 127;
- av_md5_sum(md5val, in, 999); print_md5(md5val);
-
- return 0;
-}
-#endif