#include "libbb.h"
-#if CONFIG_MD5_SIZE_VS_SPEED < 0 || CONFIG_MD5_SIZE_VS_SPEED > 3
-# define MD5_SIZE_VS_SPEED 2
+/* 0: fastest, 3: smallest */
+#if CONFIG_MD5_SIZE_VS_SPEED < 0
+# define MD5_SIZE_VS_SPEED 0
+#elif CONFIG_MD5_SIZE_VS_SPEED > 3
+# define MD5_SIZE_VS_SPEED 3
#else
# define MD5_SIZE_VS_SPEED CONFIG_MD5_SIZE_VS_SPEED
#endif
/* Initialize structure containing state of computation.
* (RFC 1321, 3.3: Step 3)
*/
-void md5_begin(md5_ctx_t *ctx)
+void FAST_FUNC md5_begin(md5_ctx_t *ctx)
{
ctx->A = 0x67452301;
ctx->B = 0xefcdab89;
ctx->C = 0x98badcfe;
ctx->D = 0x10325476;
-
ctx->total = 0;
ctx->buflen = 0;
}
* (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))
+#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))
+
+#define rotl32(w, s) (((w) << (s)) | ((w) >> (32 - (s))))
/* Hash a single block, 64 bytes long and 4-byte aligned. */
static void md5_hash_block(const void *buffer, md5_ctx_t *ctx)
uint32_t correct_words[16];
const uint32_t *words = buffer;
-# if MD5_SIZE_VS_SPEED > 0
+#if MD5_SIZE_VS_SPEED > 0
static const uint32_t C_array[] = {
/* round 1 */
0xd76aa478, 0xe8c7b756, 0x242070db, 0xc1bdceee,
0x6fa87e4f, 0xfe2ce6e0, 0xa3014314, 0x4e0811a1,
0xf7537e82, 0xbd3af235, 0x2ad7d2bb, 0xeb86d391
};
-
static const char P_array[] ALIGN1 = {
-# if MD5_SIZE_VS_SPEED > 1
+# if MD5_SIZE_VS_SPEED > 1
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, /* 1 */
-# endif /* MD5_SIZE_VS_SPEED > 1 */
+# endif
1, 6, 11, 0, 5, 10, 15, 4, 9, 14, 3, 8, 13, 2, 7, 12, /* 2 */
5, 8, 11, 14, 1, 4, 7, 10, 13, 0, 3, 6, 9, 12, 15, 2, /* 3 */
0, 7, 14, 5, 12, 3, 10, 1, 8, 15, 6, 13, 4, 11, 2, 9 /* 4 */
};
-
-# if MD5_SIZE_VS_SPEED > 1
+# if MD5_SIZE_VS_SPEED > 1
static const char S_array[] ALIGN1 = {
7, 12, 17, 22,
5, 9, 14, 20,
4, 11, 16, 23,
6, 10, 15, 21
};
-# endif /* MD5_SIZE_VS_SPEED > 1 */
-# endif
-
+# endif /* MD5_SIZE_VS_SPEED > 1 */
+#endif
uint32_t A = ctx->A;
uint32_t B = ctx->B;
uint32_t C = ctx->C;
/* Process all bytes in the buffer with 64 bytes in each round of
the loop. */
- uint32_t *cwp = correct_words;
- uint32_t A_save = A;
- uint32_t B_save = B;
- uint32_t C_save = C;
- uint32_t D_save = D;
-
-# if MD5_SIZE_VS_SPEED > 1
-# define CYCLIC(w, s) (w = (w << s) | (w >> (32 - s)))
-
- const uint32_t *pc;
- const char *pp;
- const char *ps;
- int i;
- uint32_t temp;
-
- for (i = 0; i < 16; i++) {
- cwp[i] = SWAP_LE32(words[i]);
- }
- words += 16;
-
-# if MD5_SIZE_VS_SPEED > 2
- pc = C_array;
- pp = P_array;
- ps = S_array - 4;
-
- for (i = 0; i < 64; i++) {
- if ((i & 0x0f) == 0)
- ps += 4;
- temp = A;
- switch (i >> 4) {
- case 0:
- temp += FF(B, C, D);
- break;
- case 1:
- temp += FG(B, C, D);
- break;
- case 2:
- temp += FH(B, C, D);
- break;
- case 3:
- temp += FI(B, C, D);
- }
- temp += cwp[(int) (*pp++)] + *pc++;
- CYCLIC(temp, ps[i & 3]);
- temp += B;
- A = D;
- D = C;
- C = B;
- B = temp;
- }
-# else
- pc = C_array;
- pp = P_array;
- ps = S_array;
-
- for (i = 0; i < 16; i++) {
- temp = A + FF(B, C, D) + cwp[(int) (*pp++)] + *pc++;
- CYCLIC(temp, ps[i & 3]);
- temp += B;
- A = D;
- D = C;
- C = B;
- B = temp;
+ uint32_t *cwp = correct_words;
+ uint32_t A_save = A;
+ uint32_t B_save = B;
+ uint32_t C_save = C;
+ uint32_t D_save = D;
+
+#if MD5_SIZE_VS_SPEED > 1
+ const uint32_t *pc;
+ const char *pp;
+ const char *ps;
+ int i;
+ uint32_t temp;
+
+ for (i = 0; i < 16; i++)
+ cwp[i] = SWAP_LE32(words[i]);
+ words += 16;
+
+# if MD5_SIZE_VS_SPEED > 2
+ pc = C_array;
+ pp = P_array;
+ ps = S_array - 4;
+
+ for (i = 0; i < 64; i++) {
+ if ((i & 0x0f) == 0)
+ ps += 4;
+ temp = A;
+ switch (i >> 4) {
+ case 0:
+ temp += FF(B, C, D);
+ break;
+ case 1:
+ temp += FG(B, C, D);
+ break;
+ case 2:
+ temp += FH(B, C, D);
+ break;
+ case 3:
+ temp += FI(B, C, D);
}
+ temp += cwp[(int) (*pp++)] + *pc++;
+ temp = rotl32(temp, ps[i & 3]);
+ temp += B;
+ A = D;
+ D = C;
+ C = B;
+ B = temp;
+ }
+# else
+ pc = C_array;
+ pp = P_array;
+ ps = S_array;
+
+ for (i = 0; i < 16; i++) {
+ temp = A + FF(B, C, D) + cwp[(int) (*pp++)] + *pc++;
+ temp = rotl32(temp, ps[i & 3]);
+ temp += B;
+ A = D;
+ D = C;
+ C = B;
+ B = temp;
+ }
+ ps += 4;
+ for (i = 0; i < 16; i++) {
+ temp = A + FG(B, C, D) + cwp[(int) (*pp++)] + *pc++;
+ temp = rotl32(temp, ps[i & 3]);
+ temp += B;
+ A = D;
+ D = C;
+ C = B;
+ B = temp;
+ }
+ ps += 4;
+ for (i = 0; i < 16; i++) {
+ temp = A + FH(B, C, D) + cwp[(int) (*pp++)] + *pc++;
+ temp = rotl32(temp, ps[i & 3]);
+ temp += B;
+ A = D;
+ D = C;
+ C = B;
+ B = temp;
+ }
+ ps += 4;
+ for (i = 0; i < 16; i++) {
+ temp = A + FI(B, C, D) + cwp[(int) (*pp++)] + *pc++;
+ temp = rotl32(temp, ps[i & 3]);
+ temp += B;
+ A = D;
+ D = C;
+ C = B;
+ B = temp;
+ }
- ps += 4;
- for (i = 0; i < 16; i++) {
- temp = A + FG(B, C, D) + cwp[(int) (*pp++)] + *pc++;
- CYCLIC(temp, ps[i & 3]);
- temp += B;
- A = D;
- D = C;
- C = B;
- B = temp;
- }
- ps += 4;
- for (i = 0; i < 16; i++) {
- temp = A + FH(B, C, D) + cwp[(int) (*pp++)] + *pc++;
- CYCLIC(temp, ps[i & 3]);
- temp += B;
- A = D;
- D = C;
- C = B;
- B = temp;
- }
- ps += 4;
- for (i = 0; i < 16; i++) {
- temp = A + FI(B, C, D) + cwp[(int) (*pp++)] + *pc++;
- CYCLIC(temp, ps[i & 3]);
- temp += B;
- A = D;
- D = C;
- C = B;
- B = temp;
- }
+# endif /* MD5_SIZE_VS_SPEED > 2 */
+#else
+ /* 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_LE32(*words)) + T; \
+ ++words; \
+ a = rotl32(a, s); \
+ a += b; \
+ } while (0)
+
+ /* 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
+ */
-# endif /* MD5_SIZE_VS_SPEED > 2 */
+# if MD5_SIZE_VS_SPEED == 1
+ const uint32_t *pc;
+ const char *pp;
+ int i;
+# endif /* MD5_SIZE_VS_SPEED */
+
+ /* Round 1. */
+# if MD5_SIZE_VS_SPEED == 1
+ pc = C_array;
+ for (i = 0; i < 4; i++) {
+ OP(A, B, C, D, 7, *pc++);
+ OP(D, A, B, C, 12, *pc++);
+ OP(C, D, A, B, 17, *pc++);
+ OP(B, C, D, A, 22, *pc++);
+ }
# else
- /* 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_LE32(*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. */
- /* gcc 2.95.4 seems to be --aaronl */
-# 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
- */
-
-# if MD5_SIZE_VS_SPEED == 1
- const uint32_t *pc;
- const char *pp;
- int i;
-# endif /* MD5_SIZE_VS_SPEED */
-
- /* Round 1. */
-# if MD5_SIZE_VS_SPEED == 1
- pc = C_array;
- for (i = 0; i < 4; i++) {
- OP(A, B, C, D, 7, *pc++);
- OP(D, A, B, C, 12, *pc++);
- OP(C, D, A, B, 17, *pc++);
- OP(B, C, D, A, 22, *pc++);
- }
-# else
- 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);
-# endif /* MD5_SIZE_VS_SPEED == 1 */
-
- /* 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. */
-# if MD5_SIZE_VS_SPEED == 1
- pp = P_array;
- for (i = 0; i < 4; i++) {
- OP(FG, A, B, C, D, (int) (*pp++), 5, *pc++);
- OP(FG, D, A, B, C, (int) (*pp++), 9, *pc++);
- OP(FG, C, D, A, B, (int) (*pp++), 14, *pc++);
- OP(FG, B, C, D, A, (int) (*pp++), 20, *pc++);
- }
-# else
- 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);
-# endif /* MD5_SIZE_VS_SPEED == 1 */
-
- /* Round 3. */
-# if MD5_SIZE_VS_SPEED == 1
- for (i = 0; i < 4; i++) {
- OP(FH, A, B, C, D, (int) (*pp++), 4, *pc++);
- OP(FH, D, A, B, C, (int) (*pp++), 11, *pc++);
- OP(FH, C, D, A, B, (int) (*pp++), 16, *pc++);
- OP(FH, B, C, D, A, (int) (*pp++), 23, *pc++);
- }
-# else
- 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);
-# endif /* MD5_SIZE_VS_SPEED == 1 */
-
- /* Round 4. */
-# if MD5_SIZE_VS_SPEED == 1
- for (i = 0; i < 4; i++) {
- OP(FI, A, B, C, D, (int) (*pp++), 6, *pc++);
- OP(FI, D, A, B, C, (int) (*pp++), 10, *pc++);
- OP(FI, C, D, A, B, (int) (*pp++), 15, *pc++);
- OP(FI, B, C, D, A, (int) (*pp++), 21, *pc++);
- }
-# else
- 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);
-# endif /* MD5_SIZE_VS_SPEED == 1 */
-# endif /* MD5_SIZE_VS_SPEED > 1 */
-
- /* Add the starting values of the context. */
- A += A_save;
- B += B_save;
- C += C_save;
- D += D_save;
+ 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);
+# endif/* MD5_SIZE_VS_SPEED == 1 */
+
+ /* 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; \
+ a = rotl32(a, s); \
+ a += b; \
+ } while (0)
+
+ /* Round 2. */
+# if MD5_SIZE_VS_SPEED == 1
+ pp = P_array;
+ for (i = 0; i < 4; i++) {
+ OP(FG, A, B, C, D, (int) (*pp++), 5, *pc++);
+ OP(FG, D, A, B, C, (int) (*pp++), 9, *pc++);
+ OP(FG, C, D, A, B, (int) (*pp++), 14, *pc++);
+ OP(FG, B, C, D, A, (int) (*pp++), 20, *pc++);
+ }
+# else
+ 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);
+# endif/* MD5_SIZE_VS_SPEED == 1 */
+
+ /* Round 3. */
+# if MD5_SIZE_VS_SPEED == 1
+ for (i = 0; i < 4; i++) {
+ OP(FH, A, B, C, D, (int) (*pp++), 4, *pc++);
+ OP(FH, D, A, B, C, (int) (*pp++), 11, *pc++);
+ OP(FH, C, D, A, B, (int) (*pp++), 16, *pc++);
+ OP(FH, B, C, D, A, (int) (*pp++), 23, *pc++);
+ }
+# else
+ 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);
+# endif/* MD5_SIZE_VS_SPEED == 1 */
+
+ /* Round 4. */
+# if MD5_SIZE_VS_SPEED == 1
+ for (i = 0; i < 4; i++) {
+ OP(FI, A, B, C, D, (int) (*pp++), 6, *pc++);
+ OP(FI, D, A, B, C, (int) (*pp++), 10, *pc++);
+ OP(FI, C, D, A, B, (int) (*pp++), 15, *pc++);
+ OP(FI, B, C, D, A, (int) (*pp++), 21, *pc++);
+ }
+# else
+ 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);
+# endif /* MD5_SIZE_VS_SPEED == 1 */
+#endif /* MD5_SIZE_VS_SPEED > 1 */
+
+ /* 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;
* with chunks of data that are 4-byte aligned and a multiple of 64 bytes.
* This function's internal buffer remembers previous data until it has 64
* bytes worth to pass on. Call md5_end() to flush this buffer. */
-
-void md5_hash(const void *buffer, size_t len, md5_ctx_t *ctx)
+void FAST_FUNC md5_hash(const void *buffer, size_t len, md5_ctx_t *ctx)
{
- char *buf=(char *)buffer;
+ char *buf = (char *)buffer;
/* RFC 1321 specifies the possible length of the file up to 2^64 bits,
* Here we only track the number of bytes. */
-
ctx->total += len;
- // Process all input.
-
+ /* Process all input. */
while (len) {
- int i = 64 - ctx->buflen;
-
- // Copy data into aligned buffer.
+ unsigned i = 64 - ctx->buflen;
+ /* Copy data into aligned buffer. */
if (i > len) i = len;
memcpy(ctx->buffer + ctx->buflen, buf, i);
len -= i;
ctx->buflen += i;
buf += i;
- // When buffer fills up, process it.
-
+ /* When buffer fills up, process it. */
if (ctx->buflen == 64) {
md5_hash_block(ctx->buffer, ctx);
ctx->buflen = 0;
* IMPORTANT: On some systems it is required that RESBUF is correctly
* aligned for a 32 bits value.
*/
-void *md5_end(void *resbuf, md5_ctx_t *ctx)
+void FAST_FUNC md5_end(void *resbuf, md5_ctx_t *ctx)
{
char *buf = ctx->buffer;
int i;
/* Pad data to block size. */
-
buf[ctx->buflen++] = 0x80;
memset(buf + ctx->buflen, 0, 128 - ctx->buflen);
/* Put the 64-bit file length in *bits* at the end of the buffer. */
ctx->total <<= 3;
- if (ctx->buflen > 56) buf += 64;
- for (i = 0; i < 8; i++) buf[56 + i] = ctx->total >> (i*8);
+ if (ctx->buflen > 56)
+ buf += 64;
+ for (i = 0; i < 8; i++)
+ buf[56 + i] = ctx->total >> (i*8);
/* Process last bytes. */
- if (buf != ctx->buffer) md5_hash_block(ctx->buffer, ctx);
+ if (buf != ctx->buffer)
+ md5_hash_block(ctx->buffer, ctx);
md5_hash_block(buf, ctx);
- /* Put result from CTX in first 16 bytes following RESBUF. The result is
- * always in little endian byte order, so that a byte-wise output yields
- * to the wanted ASCII representation of the message digest.
- *
- * IMPORTANT: On some systems it is required that RESBUF is correctly
- * aligned for a 32 bits value.
+ /* The MD5 result is in little endian byte order.
+ * We (ab)use the fact that A-D are consecutive in memory.
*/
- ((uint32_t *) resbuf)[0] = SWAP_LE32(ctx->A);
- ((uint32_t *) resbuf)[1] = SWAP_LE32(ctx->B);
- ((uint32_t *) resbuf)[2] = SWAP_LE32(ctx->C);
- ((uint32_t *) resbuf)[3] = SWAP_LE32(ctx->D);
-
- return resbuf;
+#if BB_BIG_ENDIAN
+ ctx->A = SWAP_LE32(ctx->A);
+ ctx->B = SWAP_LE32(ctx->B);
+ ctx->C = SWAP_LE32(ctx->C);
+ ctx->D = SWAP_LE32(ctx->D);
+#endif
+ memcpy(resbuf, &ctx->A, sizeof(ctx->A) * 4);
}
-
projects / oweals / busybox.git / blobdiff