diff options
| -rw-r--r-- | include/libbb.h | 18 | ||||
| -rw-r--r-- | libbb/Kbuild | 2 | ||||
| -rw-r--r-- | libbb/md5.c | 542 | ||||
| -rw-r--r-- | libbb/md5prime.c | 460 | ||||
| -rw-r--r-- | libbb/pw_encrypt_md5.c | 549 | ||||
| -rw-r--r-- | libbb/sha1.c | 12 |
6 files changed, 781 insertions, 802 deletions
diff --git a/include/libbb.h b/include/libbb.h index 839a0de..85a915e 100644 --- a/include/libbb.h +++ b/include/libbb.h @@ -1309,7 +1309,7 @@ typedef struct sha1_ctx_t { } sha1_ctx_t; void sha1_begin(sha1_ctx_t *ctx) FAST_FUNC; void sha1_hash(const void *data, size_t length, sha1_ctx_t *ctx) FAST_FUNC; -void *sha1_end(void *resbuf, sha1_ctx_t *ctx) FAST_FUNC; +void sha1_end(void *resbuf, sha1_ctx_t *ctx) FAST_FUNC; typedef struct sha256_ctx_t { uint32_t H[8]; uint32_t total[2]; /* rename to "count"? */ @@ -1318,7 +1318,7 @@ typedef struct sha256_ctx_t { } sha256_ctx_t; void sha256_begin(sha256_ctx_t *ctx) FAST_FUNC; void sha256_hash(const void *buffer, size_t len, sha256_ctx_t *ctx) FAST_FUNC; -void* sha256_end(void *resbuf, sha256_ctx_t *ctx) FAST_FUNC; +void sha256_end(void *resbuf, sha256_ctx_t *ctx) FAST_FUNC; typedef struct sha512_ctx_t { uint64_t H[8]; uint64_t total[2]; @@ -1327,7 +1327,8 @@ typedef struct sha512_ctx_t { } sha512_ctx_t; void sha512_begin(sha512_ctx_t *ctx) FAST_FUNC; void sha512_hash(const void *buffer, size_t len, sha512_ctx_t *ctx) FAST_FUNC; -void* sha512_end(void *resbuf, sha512_ctx_t *ctx) FAST_FUNC; +void sha512_end(void *resbuf, sha512_ctx_t *ctx) FAST_FUNC; +#if 1 typedef struct md5_ctx_t { uint32_t A; uint32_t B; @@ -1337,9 +1338,18 @@ typedef struct md5_ctx_t { uint32_t buflen; char buffer[128]; } md5_ctx_t; +#else +/* libbb/md5prime.c uses a bit different one: */ +typedef struct md5_ctx_t { + uint32_t state[4]; /* state (ABCD) */ + uint32_t count[2]; /* number of bits, modulo 2^64 (lsb first) */ + unsigned char buffer[64]; /* input buffer */ +} md5_ctx_t; +#endif void md5_begin(md5_ctx_t *ctx) FAST_FUNC; void md5_hash(const void *data, size_t length, md5_ctx_t *ctx) FAST_FUNC; -void *md5_end(void *resbuf, md5_ctx_t *ctx) FAST_FUNC; +void md5_end(void *resbuf, md5_ctx_t *ctx) FAST_FUNC; + uint32_t *crc32_filltable(uint32_t *tbl256, int endian) FAST_FUNC; diff --git a/libbb/Kbuild b/libbb/Kbuild index 786cbee..b82f03c 100644 --- a/libbb/Kbuild +++ b/libbb/Kbuild @@ -58,6 +58,8 @@ lib-y += make_directory.o lib-y += makedev.o lib-y += match_fstype.o lib-y += md5.o +# Alternative (disabled) implementation +#lib-y += md5prime.o lib-y += messages.o lib-y += mode_string.o lib-y += mtab_file.o diff --git a/libbb/md5.c b/libbb/md5.c index 4ab06eb..eb15d75 100644 --- a/libbb/md5.c +++ b/libbb/md5.c @@ -15,8 +15,11 @@ #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 @@ -30,7 +33,6 @@ void FAST_FUNC md5_begin(md5_ctx_t *ctx) ctx->B = 0xefcdab89; ctx->C = 0x98badcfe; ctx->D = 0x10325476; - ctx->total = 0; ctx->buflen = 0; } @@ -40,10 +42,12 @@ void FAST_FUNC md5_begin(md5_ctx_t *ctx) * (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) @@ -51,7 +55,7 @@ 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, @@ -74,26 +78,23 @@ static void md5_hash_block(const void *buffer, md5_ctx_t *ctx) 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; @@ -101,263 +102,252 @@ static void md5_hash_block(const void *buffer, md5_ctx_t *ctx) /* 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; - } - - 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; + 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); } - -# endif /* MD5_SIZE_VS_SPEED > 2 */ + temp += cwp[(int) (*pp++)] + *pc++; + temp = rotl32(temp, ps[i & 3]); + temp += B; + A = D; + D = C; + C = B; + B = temp; + } # 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) \ + 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; + } + +# 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; \ + a += FF(b, c, d) + (*cwp++ = SWAP_LE32(*words)) + T; \ ++words; \ - CYCLIC (a, s); \ + a = rotl32(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) \ + /* 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 += 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; + /* 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; @@ -370,31 +360,26 @@ static void md5_hash_block(const void *buffer, md5_ctx_t *ctx) * 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 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) { unsigned i = 64 - ctx->buflen; - // Copy data into aligned buffer. - + /* 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; @@ -410,23 +395,25 @@ void FAST_FUNC md5_hash(const void *buffer, size_t len, md5_ctx_t *ctx) * IMPORTANT: On some systems it is required that RESBUF is correctly * aligned for a 32 bits value. */ -void* FAST_FUNC 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 @@ -440,7 +427,4 @@ void* FAST_FUNC md5_end(void *resbuf, md5_ctx_t *ctx) ((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; } - diff --git a/libbb/md5prime.c b/libbb/md5prime.c new file mode 100644 index 0000000..7986f4d --- /dev/null +++ b/libbb/md5prime.c @@ -0,0 +1,460 @@ +/* This file is not used by busybox right now. + * However, the code here seems to be a tiny bit smaller + * than one in md5.c. Need to investigate which one + * is better overall... + * Hint: grep for md5prime to find places where you can switch + * md5.c/md5prime.c + */ + +/* + * MD5C.C - RSA Data Security, Inc., MD5 message-digest algorithm + * + * Copyright (C) 1991-2, RSA Data Security, Inc. Created 1991. All + * rights reserved. + * + * License to copy and use this software is granted provided that it + * is identified as the "RSA Data Security, Inc. MD5 Message-Digest + * Algorithm" in all material mentioning or referencing this software + * or this function. + * + * License is also granted to make and use derivative works provided + * that such works are identified as "derived from the RSA Data + * Security, Inc. MD5 Message-Digest Algorithm" in all material + * mentioning or referencing the derived work. + * + * RSA Data Security, Inc. makes no representations concerning either + * the merchantability of this software or the suitability of this + * software for any particular purpose. It is provided "as is" + * without express or implied warranty of any kind. + * + * These notices must be retained in any copies of any part of this + * documentation and/or software. + * + * $FreeBSD: src/lib/libmd/md5c.c,v 1.9.2.1 1999/08/29 14:57:12 peter Exp $ + * + * This code is the same as the code published by RSA Inc. It has been + * edited for clarity and style only. + * + * ---------------------------------------------------------------------------- + * The md5_crypt() function was taken from freeBSD's libcrypt and contains + * this license: + * "THE BEER-WARE LICENSE" (Revision 42): + * <phk@login.dknet.dk> wrote this file. As long as you retain this notice you + * can do whatever you want with this stuff. If we meet some day, and you think + * this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp + * + * $FreeBSD: src/lib/libcrypt/crypt.c,v 1.7.2.1 1999/08/29 14:56:33 peter Exp $ + * + * ---------------------------------------------------------------------------- + * On April 19th, 2001 md5_crypt() was modified to make it reentrant + * by Erik Andersen <andersen@uclibc.org> + * + * June 28, 2001 Manuel Novoa III + * + * "Un-inlined" code using loops and static const tables in order to + * reduce generated code size (on i386 from approx 4k to approx 2.5k). + * + * June 29, 2001 Manuel Novoa III + * + * Completely removed static PADDING array. + * + * Reintroduced the loop unrolling in md5_transform and added the + * MD5_SIZE_VS_SPEED option for configurability. Define below as: + * 0 fully unrolled loops + * 1 partially unrolled (4 ops per loop) + * 2 no unrolling -- introduces the need to swap 4 variables (slow) + * 3 no unrolling and all 4 loops merged into one with switch + * in each loop (glacial) + * On i386, sizes are roughly (-Os -fno-builtin): + * 0: 3k 1: 2.5k 2: 2.2k 3: 2k + * + * Since SuSv3 does not require crypt_r, modified again August 7, 2002 + * by Erik Andersen to remove reentrance stuff... + */ + +#include "libbb.h" + +/* 1: fastest, 3: smallest */ +#if CONFIG_MD5_SIZE_VS_SPEED < 1 +# define MD5_SIZE_VS_SPEED 1 +#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 + +#if BB_LITTLE_ENDIAN +#define memcpy32_cpu2le memcpy +#define memcpy32_le2cpu memcpy +#else +/* Encodes input (uint32_t) into output (unsigned char). + * Assumes len is a multiple of 4. */ +static void +memcpy32_cpu2le(unsigned char *output, uint32_t *input, unsigned len) +{ + unsigned i, j; + for (i = 0, j = 0; j < len; i++, j += 4) { + output[j] = input[i]; + output[j+1] = (input[i] >> 8); + output[j+2] = (input[i] >> 16); + output[j+3] = (input[i] >> 24); + } +} +/* Decodes input (unsigned char) into output (uint32_t). + * Assumes len is a multiple of 4. */ +static void +memcpy32_le2cpu(uint32_t *output, const unsigned char *input, unsigned len) +{ + unsigned i, j; + for (i = 0, j = 0; j < len; i++, j += 4) + output[i] = ((uint32_t)input[j]) + | (((uint32_t)input[j+1]) << 8) + | (((uint32_t)input[j+2]) << 16) + | (((uint32_t)input[j+3]) << 24); +} +#endif /* i386 */ + +/* F, G, H and I are basic MD5 functions. */ +#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))) + +/* rotl32 rotates x left n bits. */ +#define rotl32(x, n) (((x) << (n)) | ((x) >> (32 - (n)))) + +/* + * FF, GG, HH, and II transformations for rounds 1, 2, 3, and 4. + * Rotation is separate from addition to prevent recomputation. + */ +#define FF(a, b, c, d, x, s, ac) { \ + (a) += F((b), (c), (d)) + (x) + (uint32_t)(ac); \ + (a) = rotl32((a), (s)); \ + (a) += (b); \ + } +#define GG(a, b, c, d, x, s, ac) { \ + (a) += G((b), (c), (d)) + (x) + (uint32_t)(ac); \ + (a) = rotl32((a), (s)); \ + (a) += (b); \ + } +#define HH(a, b, c, d, x, s, ac) { \ + (a) += H((b), (c), (d)) + (x) + (uint32_t)(ac); \ + (a) = rotl32((a), (s)); \ + (a) += (b); \ + } +#define II(a, b, c, d, x, s, ac) { \ + (a) += I((b), (c), (d)) + (x) + (uint32_t)(ac); \ + (a) = rotl32((a), (s)); \ + (a) += (b); \ + } + +/* MD5 basic transformation. Transforms state based on block. */ +static void md5_transform(uint32_t state[4], const unsigned char block[64]) +{ + uint32_t a, b, c, d, x[16]; +#if MD5_SIZE_VS_SPEED > 1 + uint32_t temp; + const unsigned char *ps; + + static const unsigned char S[] = { + 7, 12, 17, 22, + 5, 9, 14, 20, + 4, 11, 16, 23, + 6, 10, 15, 21 + }; +#endif /* MD5_SIZE_VS_SPEED > 1 */ + +#if MD5_SIZE_VS_SPEED > 0 + const uint32_t *pc; + const unsigned char *pp; + int i; + + static const uint32_t C[] = { + /* round 1 */ + 0xd76aa478, 0xe8c7b756, 0x242070db, 0xc1bdceee, + 0xf57c0faf, 0x4787c62a, 0xa8304613, 0xfd469501, + 0x698098d8, 0x8b44f7af, 0xffff5bb1, 0x895cd7be, + 0x6b901122, 0xfd987193, 0xa679438e, 0x49b40821, + /* round 2 */ + 0xf61e2562, 0xc040b340, 0x265e5a51, 0xe9b6c7aa, + 0xd62f105d, 0x2441453, 0xd8a1e681, 0xe7d3fbc8, + 0x21e1cde6, 0xc33707d6, 0xf4d50d87, 0x455a14ed, + 0xa9e3e905, 0xfcefa3f8, 0x676f02d9, 0x8d2a4c8a, + /* round 3 */ + 0xfffa3942, 0x8771f681, 0x6d9d6122, 0xfde5380c, + 0xa4beea44, 0x4bdecfa9, 0xf6bb4b60, 0xbebfbc70, + 0x289b7ec6, 0xeaa127fa, 0xd4ef3085, 0x4881d05, + 0xd9d4d039, 0xe6db99e5, 0x1fa27cf8, 0xc4ac5665, + /* round 4 */ + 0xf4292244, 0x432aff97, 0xab9423a7, 0xfc93a039, + 0x655b59c3, 0x8f0ccc92, 0xffeff47d, 0x85845dd1, + 0x6fa87e4f, 0xfe2ce6e0, 0xa3014314, 0x4e0811a1, + 0xf7537e82, 0xbd3af235, 0x2ad7d2bb, 0xeb86d391 + }; + static const unsigned char P[] = { + 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, /* 1 */ + 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 */ + }; + +#endif /* MD5_SIZE_VS_SPEED > 0 */ + + memcpy32_le2cpu(x, block, 64); + + a = state[0]; + b = state[1]; + c = state[2]; + d = state[3]; + +#if MD5_SIZE_VS_SPEED > 2 + pc = C; + pp = P; + ps = S - 4; + for (i = 0; i < 64; i++) { + if ((i & 0x0f) == 0) ps += 4; + temp = a; + switch (i>>4) { + case 0: + temp += F(b, c, d); + break; + case 1: + temp += G(b, c, d); + break; + case 2: + temp += H(b, c, d); + break; + case 3: + temp += I(b, c, d); + break; + } + temp += x[*pp++] + *pc++; + temp = rotl32(temp, ps[i & 3]); + temp += b; + a = d; d = c; c = b; b = temp; + } +#elif MD5_SIZE_VS_SPEED > 1 + pc = C; + pp = P; + ps = S; + /* Round 1 */ + for (i = 0; i < 16; i++) { + FF(a, b, c, d, x[*pp], ps[i & 0x3], *pc); pp++; pc++; + temp = d; d = c; c = b; b = a; a = temp; + } + /* Round 2 */ + ps += 4; + for (; i < 32; i++) { + GG(a, b, c, d, x[*pp], ps[i & 0x3], *pc); pp++; pc++; + temp = d; d = c; c = b; b = a; a = temp; + } + /* Round 3 */ + ps += 4; + for (; i < 48; i++) { + HH(a, b, c, d, x[*pp], ps[i & 0x3], *pc); pp++; pc++; + temp = d; d = c; c = b; b = a; a = temp; + } + /* Round 4 */ + ps += 4; + for (; i < 64; i++) { + II(a, b, c, d, x[*pp], ps[i & 0x3], *pc); pp++; pc++; + temp = d; d = c; c = b; b = a; a = temp; + } +#elif MD5_SIZE_VS_SPEED > 0 + pc = C; + pp = P; + /* Round 1 */ + for (i = 0; i < 4; i++) { + FF(a, b, c, d, x[*pp], 7, *pc); pp++; pc++; + FF(d, a, b, c, x[*pp], 12, *pc); pp++; pc++; + FF(c, d, a, b, x[*pp], 17, *pc); pp++; pc++; + FF(b, c, d, a, x[*pp], 22, *pc); pp++; pc++; + } + /* Round 2 */ + for (i = 0; i < 4; i++) { + GG(a, b, c, d, x[*pp], 5, *pc); pp++; pc++; + GG(d, a, b, c, x[*pp], 9, *pc); pp++; pc++; + GG(c, d, a, b, x[*pp], 14, *pc); pp++; pc++; + GG(b, c, d, a, x[*pp], 20, *pc); pp++; pc++; + } + /* Round 3 */ + for (i = 0; i < 4; i++) { + HH(a, b, c, d, x[*pp], 4, *pc); pp++; pc++; + HH(d, a, b, c, x[*pp], 11, *pc); pp++; pc++; + HH(c, d, a, b, x[*pp], 16, *pc); pp++; pc++; + HH(b, c, d, a, x[*pp], 23, *pc); pp++; pc++; + } + /* Round 4 */ + for (i = 0; i < 4; i++) { + II(a, b, c, d, x[*pp], 6, *pc); pp++; pc++; + II(d, a, b, c, x[*pp], 10, *pc); pp++; pc++; + II(c, d, a, b, x[*pp], 15, *pc); pp++; pc++; + II(b, c, d, a, x[*pp], 21, *pc); pp++; pc++; + } +#else + /* Round 1 */ +#define S11 7 +#define S12 12 +#define S13 17 +#define S14 22 + FF(a, b, c, d, x[ 0], S11, 0xd76aa478); /* 1 */ + FF(d, a, b, c, x[ 1], S12, 0xe8c7b756); /* 2 */ + FF(c, d, a, b, x[ 2], S13, 0x242070db); /* 3 */ + FF(b, c, d, a, x[ 3], S14, 0xc1bdceee); /* 4 */ + FF(a, b, c, d, x[ 4], S11, 0xf57c0faf); /* 5 */ + FF(d, a, b, c, x[ 5], S12, 0x4787c62a); /* 6 */ + FF(c, d, a, b, x[ 6], S13, 0xa8304613); /* 7 */ + FF(b, c, d, a, x[ 7], S14, 0xfd469501); /* 8 */ + FF(a, b, c, d, x[ 8], S11, 0x698098d8); /* 9 */ + FF(d, a, b, c, x[ 9], S12, 0x8b44f7af); /* 10 */ + FF(c, d, a, b, x[10], S13, 0xffff5bb1); /* 11 */ + FF(b, c, d, a, x[11], S14, 0x895cd7be); /* 12 */ + FF(a, b, c, d, x[12], S11, 0x6b901122); /* 13 */ + FF(d, a, b, c, x[13], S12, 0xfd987193); /* 14 */ + FF(c, d, a, b, x[14], S13, 0xa679438e); /* 15 */ + FF(b, c, d, a, x[15], S14, 0x49b40821); /* 16 */ + /* Round 2 */ +#define S21 5 +#define S22 9 +#define S23 14 +#define S24 20 + GG(a, b, c, d, x[ 1], S21, 0xf61e2562); /* 17 */ + GG(d, a, b, c, x[ 6], S22, 0xc040b340); /* 18 */ + GG(c, d, a, b, x[11], S23, 0x265e5a51); /* 19 */ + GG(b, c, d, a, x[ 0], S24, 0xe9b6c7aa); /* 20 */ + GG(a, b, c, d, x[ 5], S21, 0xd62f105d); /* 21 */ + GG(d, a, b, c, x[10], S22, 0x2441453); /* 22 */ + GG(c, d, a, b, x[15], S23, 0xd8a1e681); /* 23 */ + GG(b, c, d, a, x[ 4], S24, 0xe7d3fbc8); /* 24 */ + GG(a, b, c, d, x[ 9], S21, 0x21e1cde6); /* 25 */ + GG(d, a, b, c, x[14], S22, 0xc33707d6); /* 26 */ + GG(c, d, a, b, x[ 3], S23, 0xf4d50d87); /* 27 */ + GG(b, c, d, a, x[ 8], S24, 0x455a14ed); /* 28 */ + GG(a, b, c, d, x[13], S21, 0xa9e3e905); /* 29 */ + GG(d, a, b, c, x[ 2], S22, 0xfcefa3f8); /* 30 */ + GG(c, d, a, b, x[ 7], S23, 0x676f02d9); /* 31 */ + GG(b, c, d, a, x[12], S24, 0x8d2a4c8a); /* 32 */ + /* Round 3 */ +#define S31 4 +#define S32 11 +#define S33 16 +#define S34 23 + HH(a, b, c, d, x[ 5], S31, 0xfffa3942); /* 33 */ + HH(d, a, b, c, x[ 8], S32, 0x8771f681); /* 34 */ + HH(c, d, a, b, x[11], S33, 0x6d9d6122); /* 35 */ + HH(b, c, d, a, x[14], S34, 0xfde5380c); /* 36 */ + HH(a, b, c, d, x[ 1], S31, 0xa4beea44); /* 37 */ + HH(d, a, b, c, x[ 4], S32, 0x4bdecfa9); /* 38 */ + HH(c, d, a, b, x[ 7], S33, 0xf6bb4b60); /* 39 */ + HH(b, c, d, a, x[10], S34, 0xbebfbc70); /* 40 */ + HH(a, b, c, d, x[13], S31, 0x289b7ec6); /* 41 */ + HH(d, a, b, c, x[ 0], S32, 0xeaa127fa); /* 42 */ + HH(c, d, a, b, x[ 3], S33, 0xd4ef3085); /* 43 */ + HH(b, c, d, a, x[ 6], S34, 0x4881d05); /* 44 */ + HH(a, b, c, d, x[ 9], S31, 0xd9d4d039); /* 45 */ + HH(d, a, b, c, x[12], S32, 0xe6db99e5); /* 46 */ + HH(c, d, a, b, x[15], S33, 0x1fa27cf8); /* 47 */ + HH(b, c, d, a, x[ 2], S34, 0xc4ac5665); /* 48 */ + /* Round 4 */ +#define S41 6 +#define S42 10 +#define S43 15 +#define S44 21 + II(a, b, c, d, x[ 0], S41, 0xf4292244); /* 49 */ + II(d, a, b, c, x[ 7], S42, 0x432aff97); /* 50 */ + II(c, d, a, b, x[14], S43, 0xab9423a7); /* 51 */ + II(b, c, d, a, x[ 5], S44, 0xfc93a039); /* 52 */ + II(a, b, c, d, x[12], S41, 0x655b59c3); /* 53 */ + II(d, a, b, c, x[ 3], S42, 0x8f0ccc92); /* 54 */ + II(c, d, a, b, x[10], S43, 0xffeff47d); /* 55 */ + II(b, c, d, a, x[ 1], S44, 0x85845dd1); /* 56 */ + II(a, b, c, d, x[ 8], S41, 0x6fa87e4f); /* 57 */ + II(d, a, b, c, x[15], S42, 0xfe2ce6e0); /* 58 */ + II(c, d, a, b, x[ 6], S43, 0xa3014314); /* 59 */ + II(b, c, d, a, x[13], S44, 0x4e0811a1); /* 60 */ + II(a, b, c, d, x[ 4], S41, 0xf7537e82); /* 61 */ + II(d, a, b, c, x[11], S42, 0xbd3af235); /* 62 */ + II(c, d, a, b, x[ 2], S43, 0x2ad7d2bb); /* 63 */ + II(b, c, d, a, x[ 9], S44, 0xeb86d391); /* 64 */ +#endif + + state[0] += a; + state[1] += b; + state[2] += c; + state[3] += d; + + /* Zeroize sensitive information. */ + memset(x, 0, sizeof(x)); +} + + +/* MD5 initialization. */ +void FAST_FUNC md5_begin(md5_ctx_t *context) +{ + context->count[0] = context->count[1] = 0; + /* Load magic initialization constants. */ + context->state[0] = 0x67452301; + context->state[1] = 0xefcdab89; + context->state[2] = 0x98badcfe; + context->state[3] = 0x10325476; +} + +/* + * MD5 block update operation. Continues an MD5 message-digest + * operation, processing another message block, and updating + * the context. + */ +void FAST_FUNC md5_hash(const void *buffer, size_t inputLen, md5_ctx_t *context) +{ + unsigned i, idx, partLen; + const unsigned char *input = buffer; + + /* Compute number of bytes mod 64 */ + idx = (context->count[0] >> 3) & 0x3F; + + /* Update number of bits */ + context->count[0] += (inputLen << 3); + if (context->count[0] < (inputLen << 3)) + context->count[1]++; + context->count[1] += (inputLen >> 29); + + /* Transform as many times as possible. */ + i = 0; + partLen = 64 - idx; + if (inputLen >= partLen) { + memcpy(&context->buffer[idx], input, partLen); + md5_transform(context->state, context->buffer); + for (i = partLen; i + 63 < inputLen; i += 64) + md5_transform(context->state, &input[i]); + idx = 0; + } + + /* Buffer remaining input */ + memcpy(&context->buffer[idx], &input[i], inputLen - i); +} + +/* + * MD5 finalization. Ends an MD5 message-digest operation, + * writing the message digest. + */ +void FAST_FUNC md5_end(void *digest, md5_ctx_t *context) +{ + unsigned idx, padLen; + unsigned char bits[8]; + unsigned char padding[64]; + + /* Add padding followed by original length. */ + memset(padding, 0, sizeof(padding)); + padding[0] = 0x80; + /* save number of bits */ + memcpy32_cpu2le(bits, context->count, 8); + /* pad out to 56 mod 64 */ + idx = (context->count[0] >> 3) & 0x3f; + padLen = (idx < 56) ? (56 - idx) : (120 - idx); + md5_hash(padding, padLen, context); + /* append length (before padding) */ + md5_hash(bits, 8, context); + + /* Store state in digest */ + memcpy32_cpu2le(digest, context->state, 16); +} diff --git a/libbb/pw_encrypt_md5.c b/libbb/pw_encrypt_md5.c index b7478aa..b02cbec 100644 --- a/libbb/pw_encrypt_md5.c +++ b/libbb/pw_encrypt_md5.c @@ -61,439 +61,14 @@ * On i386, sizes are roughly (-Os -fno-builtin): * 0: 3k 1: 2.5k 2: 2.2k 3: 2k * - * * Since SuSv3 does not require crypt_r, modified again August 7, 2002 * by Erik Andersen to remove reentrance stuff... */ -/* - * Valid values are 1 (fastest/largest) to 3 (smallest/slowest). - */ -#define MD5_SIZE_OVER_SPEED 3 - -/**********************************************************************/ - -/* MD5 context. */ -struct MD5Context { - uint32_t state[4]; /* state (ABCD) */ - uint32_t count[2]; /* number of bits, modulo 2^64 (lsb first) */ - unsigned char buffer[64]; /* input buffer */ -}; - -static void __md5_Init(struct MD5Context *); -static void __md5_Update(struct MD5Context *, const unsigned char *, unsigned int); -static void __md5_Pad(struct MD5Context *); -static void __md5_Final(unsigned char [16], struct MD5Context *); -static void __md5_Transform(uint32_t [4], const unsigned char [64]); - - #define MD5_MAGIC_STR "$1$" #define MD5_MAGIC_LEN (sizeof(MD5_MAGIC_STR) - 1) static const unsigned char __md5__magic[] = MD5_MAGIC_STR; - -#ifdef i386 -#define __md5_Encode memcpy -#define __md5_Decode memcpy -#else /* i386 */ - -/* - * __md5_Encodes input (uint32_t) into output (unsigned char). Assumes len is - * a multiple of 4. - */ -static void -__md5_Encode(unsigned char *output, uint32_t *input, unsigned int len) -{ - unsigned int i, j; - - for (i = 0, j = 0; j < len; i++, j += 4) { - output[j] = input[i]; - output[j+1] = (input[i] >> 8); - output[j+2] = (input[i] >> 16); - output[j+3] = (input[i] >> 24); - } -} - -/* - * __md5_Decodes input (unsigned char) into output (uint32_t). Assumes len is - * a multiple of 4. - */ -static void -__md5_Decode(uint32_t *output, const unsigned char *input, unsigned int len) -{ - unsigned int i, j; - - for (i = 0, j = 0; j < len; i++, j += 4) - output[i] = ((uint32_t)input[j]) | (((uint32_t)input[j+1]) << 8) | - (((uint32_t)input[j+2]) << 16) | (((uint32_t)input[j+3]) << 24); -} -#endif /* i386 */ - -/* F, G, H and I are basic MD5 functions. */ -#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))) - -/* ROTATE_LEFT rotates x left n bits. */ -#define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32-(n)))) - -/* - * FF, GG, HH, and II transformations for rounds 1, 2, 3, and 4. - * Rotation is separate from addition to prevent recomputation. - */ -#define FF(a, b, c, d, x, s, ac) { \ - (a) += F ((b), (c), (d)) + (x) + (uint32_t)(ac); \ - (a) = ROTATE_LEFT((a), (s)); \ - (a) += (b); \ - } -#define GG(a, b, c, d, x, s, ac) { \ - (a) += G ((b), (c), (d)) + (x) + (uint32_t)(ac); \ - (a) = ROTATE_LEFT((a), (s)); \ - (a) += (b); \ - } -#define HH(a, b, c, d, x, s, ac) { \ - (a) += H ((b), (c), (d)) + (x) + (uint32_t)(ac); \ - (a) = ROTATE_LEFT((a), (s)); \ - (a) += (b); \ - } -#define II(a, b, c, d, x, s, ac) { \ - (a) += I ((b), (c), (d)) + (x) + (uint32_t)(ac); \ - (a) = ROTATE_LEFT((a), (s)); \ - (a) += (b); \ - } - -/* MD5 initialization. Begins an MD5 operation, writing a new context. */ -static void __md5_Init(struct MD5Context *context) -{ - context->count[0] = context->count[1] = 0; - - /* Load magic initialization constants. */ - context->state[0] = 0x67452301; - context->state[1] = 0xefcdab89; - context->state[2] = 0x98badcfe; - context->state[3] = 0x10325476; -} - -/* - * MD5 block update operation. Continues an MD5 message-digest - * operation, processing another message block, and updating the - * context. - */ -static void __md5_Update(struct MD5Context *context, const unsigned char *input, unsigned int inputLen) -{ - unsigned int i, idx, partLen; - - /* Compute number of bytes mod 64 */ - idx = (context->count[0] >> 3) & 0x3F; - - /* Update number of bits */ - context->count[0] += (inputLen << 3); - if (context->count[0] < (inputLen << 3)) - context->count[1]++; - context->count[1] += (inputLen >> 29); - - partLen = 64 - idx; - - /* Transform as many times as possible. */ - if (inputLen >= partLen) { - memcpy(&context->buffer[idx], input, partLen); - __md5_Transform(context->state, context->buffer); - - for (i = partLen; i + 63 < inputLen; i += 64) - __md5_Transform(context->state, &input[i]); - - idx = 0; - } else - i = 0; - - /* Buffer remaining input */ - memcpy(&context->buffer[idx], &input[i], inputLen - i); -} - -/* - * MD5 padding. Adds padding followed by original length. - */ -static void __md5_Pad(struct MD5Context *context) -{ - unsigned char bits[8]; - unsigned int idx, padLen; - unsigned char PADDING[64]; - - memset(PADDING, 0, sizeof(PADDING)); - PADDING[0] = 0x80; - - /* Save number of bits */ - __md5_Encode(bits, context->count, 8); - - /* Pad out to 56 mod 64. */ - idx = (context->count[0] >> 3) & 0x3f; - padLen = (idx < 56) ? (56 - idx) : (120 - idx); - __md5_Update(context, PADDING, padLen); - - /* Append length (before padding) */ - __md5_Update(context, bits, 8); -} - -/* - * MD5 finalization. Ends an MD5 message-digest operation, writing the - * the message digest and zeroizing the context. - */ -static void __md5_Final(unsigned char digest[16], struct MD5Context *context) -{ - /* Do padding. */ - __md5_Pad(context); - - /* Store state in digest */ - __md5_Encode(digest, context->state, 16); - - /* Zeroize sensitive information. */ - memset(context, 0, sizeof(*context)); -} - -/* MD5 basic transformation. Transforms state based on block. */ -static void __md5_Transform(uint32_t state[4], const unsigned char block[64]) -{ - uint32_t a, b, c, d, x[16]; -#if MD5_SIZE_OVER_SPEED > 1 - uint32_t temp; - const unsigned char *ps; - - static const unsigned char S[] = { - 7, 12, 17, 22, - 5, 9, 14, 20, - 4, 11, 16, 23, - 6, 10, 15, 21 - }; -#endif /* MD5_SIZE_OVER_SPEED > 1 */ - -#if MD5_SIZE_OVER_SPEED > 0 - const uint32_t *pc; - const unsigned char *pp; - int i; - - static const uint32_t C[] = { - /* round 1 */ - 0xd76aa478, 0xe8c7b756, 0x242070db, 0xc1bdceee, - 0xf57c0faf, 0x4787c62a, 0xa8304613, 0xfd469501, - 0x698098d8, 0x8b44f7af, 0xffff5bb1, 0x895cd7be, - 0x6b901122, 0xfd987193, 0xa679438e, 0x49b40821, - /* round 2 */ - 0xf61e2562, 0xc040b340, 0x265e5a51, 0xe9b6c7aa, - 0xd62f105d, 0x2441453, 0xd8a1e681, 0xe7d3fbc8, - 0x21e1cde6, 0xc33707d6, 0xf4d50d87, 0x455a14ed, - 0xa9e3e905, 0xfcefa3f8, 0x676f02d9, 0x8d2a4c8a, - /* round 3 */ - 0xfffa3942, 0x8771f681, 0x6d9d6122, 0xfde5380c, - 0xa4beea44, 0x4bdecfa9, 0xf6bb4b60, 0xbebfbc70, - 0x289b7ec6, 0xeaa127fa, 0xd4ef3085, 0x4881d05, - 0xd9d4d039, 0xe6db99e5, 0x1fa27cf8, 0xc4ac5665, - /* round 4 */ - 0xf4292244, 0x432aff97, 0xab9423a7, 0xfc93a039, - 0x655b59c3, 0x8f0ccc92, 0xffeff47d, 0x85845dd1, - 0x6fa87e4f, 0xfe2ce6e0, 0xa3014314, 0x4e0811a1, - 0xf7537e82, 0xbd3af235, 0x2ad7d2bb, 0xeb86d391 - }; - - static const unsigned char P[] = { - 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, /* 1 */ - 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 */ - }; - -#endif /* MD5_SIZE_OVER_SPEED > 0 */ - - __md5_Decode(x, block, 64); - - a = state[0]; b = state[1]; c = state[2]; d = state[3]; - -#if MD5_SIZE_OVER_SPEED > 2 - pc = C; pp = P; ps = S - 4; - - for (i = 0; i < 64; i++) { - if ((i & 0x0f) == 0) ps += 4; - temp = a; - switch (i>>4) { - case 0: - temp += F(b, c, d); - break; - case 1: - temp += G(b, c, d); - break; - case 2: - temp += H(b, c, d); - break; - case 3: - temp += I(b, c, d); - break; - } - temp += x[*pp++] + *pc++; - temp = ROTATE_LEFT(temp, ps[i & 3]); - temp += b; - a = d; d = c; c = b; b = temp; - } -#elif MD5_SIZE_OVER_SPEED > 1 - pc = C; pp = P; ps = S; - - /* Round 1 */ - for (i = 0; i < 16; i++) { - FF(a, b, c, d, x[*pp], ps[i & 0x3], *pc); pp++; pc++; - temp = d; d = c; c = b; b = a; a = temp; - } - - /* Round 2 */ - ps += 4; - for (; i < 32; i++) { - GG(a, b, c, d, x[*pp], ps[i & 0x3], *pc); pp++; pc++; - temp = d; d = c; c = b; b = a; a = temp; - } - /* Round 3 */ - ps += 4; - for (; i < 48; i++) { - HH(a, b, c, d, x[*pp], ps[i & 0x3], *pc); pp++; pc++; - temp = d; d = c; c = b; b = a; a = temp; - } - - /* Round 4 */ - ps += 4; - for (; i < 64; i++) { - II(a, b, c, d, x[*pp], ps[i & 0x3], *pc); pp++; pc++; - temp = d; d = c; c = b; b = a; a = temp; - } -#elif MD5_SIZE_OVER_SPEED > 0 - pc = C; pp = P; - - /* Round 1 */ - for (i = 0; i < 4; i++) { - FF(a, b, c, d, x[*pp], 7, *pc); pp++; pc++; - FF(d, a, b, c, x[*pp], 12, *pc); pp++; pc++; - FF(c, d, a, b, x[*pp], 17, *pc); pp++; pc++; - FF(b, c, d, a, x[*pp], 22, *pc); pp++; pc++; - } - - /* Round 2 */ - for (i = 0; i < 4; i++) { - GG(a, b, c, d, x[*pp], 5, *pc); pp++; pc++; - GG(d, a, b, c, x[*pp], 9, *pc); pp++; pc++; - GG(c, d, a, b, x[*pp], 14, *pc); pp++; pc++; - GG(b, c, d, a, x[*pp], 20, *pc); pp++; pc++; - } - /* Round 3 */ - for (i = 0; i < 4; i++) { - HH(a, b, c, d, x[*pp], 4, *pc); pp++; pc++; - HH(d, a, b, c, x[*pp], 11, *pc); pp++; pc++; - HH(c, d, a, b, x[*pp], 16, *pc); pp++; pc++; - HH(b, c, d, a, x[*pp], 23, *pc); pp++; pc++; - } - - /* Round 4 */ - for (i = 0; i < 4; i++) { - II(a, b, c, d, x[*pp], 6, *pc); pp++; pc++; - II(d, a, b, c, x[*pp], 10, *pc); pp++; pc++; - II(c, d, a, b, x[*pp], 15, *pc); pp++; pc++; - II(b, c, d, a, x[*pp], 21, *pc); pp++; pc++; - } -#else - /* Round 1 */ -#define S11 7 -#define S12 12 -#define S13 17 -#define S14 22 - FF(a, b, c, d, x[ 0], S11, 0xd76aa478); /* 1 */ - FF(d, a, b, c, x[ 1], S12, 0xe8c7b756); /* 2 */ - FF(c, d, a, b, x[ 2], S13, 0x242070db); /* 3 */ - FF(b, c, d, a, x[ 3], S14, 0xc1bdceee); /* 4 */ - FF(a, b, c, d, x[ 4], S11, 0xf57c0faf); /* 5 */ - FF(d, a, b, c, x[ 5], S12, 0x4787c62a); /* 6 */ - FF(c, d, a, b, x[ 6], S13, 0xa8304613); /* 7 */ - FF(b, c, d, a, x[ 7], S14, 0xfd469501); /* 8 */ - FF(a, b, c, d, x[ 8], S11, 0x698098d8); /* 9 */ - FF(d, a, b, c, x[ 9], S12, 0x8b44f7af); /* 10 */ - FF(c, d, a, b, x[10], S13, 0xffff5bb1); /* 11 */ - FF(b, c, d, a, x[11], S14, 0x895cd7be); /* 12 */ - FF(a, b, c, d, x[12], S11, 0x6b901122); /* 13 */ - FF(d, a, b, c, x[13], S12, 0xfd987193); /* 14 */ - FF(c, d, a, b, x[14], S13, 0xa679438e); /* 15 */ - FF(b, c, d, a, x[15], S14, 0x49b40821); /* 16 */ - - /* Round 2 */ -#define S21 5 -#define S22 9 -#define S23 14 -#define S24 20 - GG(a, b, c, d, x[ 1], S21, 0xf61e2562); /* 17 */ - GG(d, a, b, c, x[ 6], S22, 0xc040b340); /* 18 */ - GG(c, d, a, b, x[11], S23, 0x265e5a51); /* 19 */ - GG(b, c, d, a, x[ 0], S24, 0xe9b6c7aa); /* 20 */ - GG(a, b, c, d, x[ 5], S21, 0xd62f105d); /* 21 */ - GG(d, a, b, c, x[10], S22, 0x2441453); /* 22 */ - GG(c, d, a, b, x[15], S23, 0xd8a1e681); /* 23 */ - GG(b, c, d, a, x[ 4], S24, 0xe7d3fbc8); /* 24 */ - GG(a, b, c, d, x[ 9], S21, 0x21e1cde6); /* 25 */ - GG(d, a, b, c, x[14], S22, 0xc33707d6); /* 26 */ - GG(c, d, a, b, x[ 3], S23, 0xf4d50d87); /* 27 */ - GG(b, c, d, a, x[ 8], S24, 0x455a14ed); /* 28 */ - GG(a, b, c, d, x[13], S21, 0xa9e3e905); /* 29 */ - GG(d, a, b, c, x[ 2], S22, 0xfcefa3f8); /* 30 */ - GG(c, d, a, b, x[ 7], S23, 0x676f02d9); /* 31 */ - GG(b, c, d, a, x[12], S24, 0x8d2a4c8a); /* 32 */ - - /* Round 3 */ -#define S31 4 -#define S32 11 -#define S33 16 -#define S34 23 - HH(a, b, c, d, x[ 5], S31, 0xfffa3942); /* 33 */ - HH(d, a, b, c, x[ 8], S32, 0x8771f681); /* 34 */ - HH(c, d, a, b, x[11], S33, 0x6d9d6122); /* 35 */ - HH(b, c, d, a, x[14], S34, 0xfde5380c); /* 36 */ - HH(a, b, c, d, x[ 1], S31, 0xa4beea44); /* 37 */ - HH(d, a, b, c, x[ 4], S32, 0x4bdecfa9); /* 38 */ - HH(c, d, a, b, x[ 7], S33, 0xf6bb4b60); /* 39 */ - HH(b, c, d, a, x[10], S34, 0xbebfbc70); /* 40 */ - HH(a, b, c, d, x[13], S31, 0x289b7ec6); /* 41 */ - HH(d, a, b, c, x[ 0], S32, 0xeaa127fa); /* 42 */ - HH(c, d, a, b, x[ 3], S33, 0xd4ef3085); /* 43 */ - HH(b, c, d, a, x[ 6], S34, 0x4881d05); /* 44 */ - HH(a, b, c, d, x[ 9], S31, 0xd9d4d039); /* 45 */ - HH(d, a, b, c, x[12], S32, 0xe6db99e5); /* 46 */ - HH(c, d, a, b, x[15], S33, 0x1fa27cf8); /* 47 */ - HH(b, c, d, a, x[ 2], S34, 0xc4ac5665); /* 48 */ - - /* Round 4 */ -#define S41 6 -#define S42 10 -#define S43 15 -#define S44 21 - II(a, b, c, d, x[ 0], S41, 0xf4292244); /* 49 */ - II(d, a, b, c, x[ 7], S42, 0x432aff97); /* 50 */ - II(c, d, a, b, x[14], S43, 0xab9423a7); /* 51 */ - II(b, c, d, a, x[ 5], S44, 0xfc93a039); /* 52 */ - II(a, b, c, d, x[12], S41, 0x655b59c3); /* 53 */ - II(d, a, b, c, x[ 3], S42, 0x8f0ccc92); /* 54 */ - II(c, d, a, b, x[10], S43, 0xffeff47d); /* 55 */ - II(b, c, d, a, x[ 1], S44, 0x85845dd1); /* 56 */ - II(a, b, c, d, x[ 8], S41, 0x6fa87e4f); /* 57 */ - II(d, a, b, c, x[15], S42, 0xfe2ce6e0); /* 58 */ - II(c, d, a, b, x[ 6], S43, 0xa3014314); /* 59 */ - II(b, c, d, a, x[13], S44, 0x4e0811a1); /* 60 */ - II(a, b, c, d, x[ 4], S41, 0xf7537e82); /* 61 */ - II(d, a, b, c, x[11], S42, 0xbd3af235); /* 62 */ - II(c, d, a, b, x[ 2], S43, 0x2ad7d2bb); /* 63 */ - II(b, c, d, a, x[ 9], S44, 0xeb86d391); /* 64 */ -#endif - - state[0] += a; - state[1] += b; - state[2] += c; - state[3] += d; - - /* Zeroize sensitive information. */ - memset(x, 0, sizeof(x)); -} - - /* * UNIX password * @@ -502,94 +77,77 @@ static void __md5_Transform(uint32_t state[4], const unsigned char block[64]) #define MD5_OUT_BUFSIZE 36 static char * NOINLINE -md5_crypt(char passwd[MD5_OUT_BUFSIZE], const unsigned char *pw, const unsigned char *salt) +md5_crypt(char result[MD5_OUT_BUFSIZE], const unsigned char *pw, const unsigned char *salt) { - const unsigned char *sp, *ep; char *p; - unsigned char final[17]; /* final[16] exists only to aid in looping */ + unsigned char final[17]; /* final[16] exists only to aid in looping */ int sl, pl, i, pw_len; - struct MD5Context ctx, ctx1; - - /* Refine the Salt first */ - sp = salt; + md5_ctx_t ctx, ctx1; -// always true for bbox -// /* If it starts with the magic string, then skip that */ -// if (!strncmp(sp, __md5__magic, MD5_MAGIC_LEN)) - sp += MD5_MAGIC_LEN; + /* NB: in busybox, "$1$" in salt is always present */ - /* It stops at the first '$', max 8 chars */ - for (ep = sp; *ep && *ep != '$' && ep < (sp+8); ep++) - continue; - - /* get the length of the true salt */ - sl = ep - sp; + /* Refine the Salt first */ - __md5_Init(&ctx); + /* Get the length of the salt including "$1$" */ + sl = 3; + while (salt[sl] && salt[sl] != '$' && sl < (3 + 8)) + sl++; - /* The password first, since that is what is most unknown */ + /* Hash. the password first, since that is what is most unknown */ + md5_begin(&ctx); pw_len = strlen((char*)pw); - __md5_Update(&ctx, pw, pw_len); + md5_hash(pw, pw_len, &ctx); - /* Then our magic string */ - __md5_Update(&ctx, __md5__magic, MD5_MAGIC_LEN); + /* Then the salt including "$1$" */ + md5_hash(salt, sl, &ctx); - /* Then the raw salt */ - __md5_Update(&ctx, sp, sl); + /* Copy salt to result; skip "$1$" */ + memcpy(result, salt, sl); + result[sl] = '$'; + salt += 3; + sl -= 3; /* Then just as many characters of the MD5(pw, salt, pw) */ - __md5_Init(&ctx1); - __md5_Update(&ctx1, pw, pw_len); - __md5_Update(&ctx1, sp, sl); - __md5_Update(&ctx1, pw, pw_len); - __md5_Final(final, &ctx1); + md5_begin(&ctx1); + md5_hash(pw, pw_len, &ctx1); + md5_hash(salt, sl, &ctx1); + md5_hash(pw, pw_len, &ctx1); + md5_end(final, &ctx1); for (pl = pw_len; pl > 0; pl -= 16) - __md5_Update(&ctx, final, pl > 16 ? 16 : pl); - - /* Don't leave anything around in vm they could use. */ -//TODO: the above comment seems to be wrong. final is used later. - memset(final, 0, sizeof(final)); + md5_hash(final, pl > 16 ? 16 : pl, &ctx); /* Then something really weird... */ + memset(final, 0, sizeof(final)); for (i = pw_len; i; i >>= 1) { - __md5_Update(&ctx, ((i & 1) ? final : (const unsigned char *) pw), 1); + md5_hash(((i & 1) ? final : (const unsigned char *) pw), 1, &ctx); } + md5_end(final, &ctx); - /* Now make the output string */ - passwd[0] = '$'; - passwd[1] = '1'; - passwd[2] = '$'; - strncpy(passwd + 3, (char*)sp, sl); - passwd[sl + 3] = '$'; - - __md5_Final(final, &ctx); - - /* - * and now, just to make sure things don't run too fast + /* And now, just to make sure things don't run too fast. * On a 60 Mhz Pentium this takes 34 msec, so you would * need 30 seconds to build a 1000 entry dictionary... */ for (i = 0; i < 1000; i++) { - __md5_Init(&ctx1); + md5_begin(&ctx1); if (i & 1) - __md5_Update(&ctx1, pw, pw_len); + md5_hash(pw, pw_len, &ctx1); else - __md5_Update(&ctx1, final, 16); + md5_hash(final, 16, &ctx1); if (i % 3) - __md5_Update(&ctx1, sp, sl); + md5_hash(salt, sl, &ctx1); if (i % 7) - __md5_Update(&ctx1, pw, pw_len); + md5_hash(pw, pw_len, &ctx1); if (i & 1) - __md5_Update(&ctx1, final, 16); + md5_hash(final, 16, &ctx1); else - __md5_Update(&ctx1, pw, pw_len); - __md5_Final(final, &ctx1); + md5_hash(pw, pw_len, &ctx1); + md5_end(final, &ctx1); } - p = passwd + sl + 4; /* 12 bytes max (sl is up to 8 bytes) */ + p = result + sl + 4; /* 12 bytes max (sl is up to 8 bytes) */ /* Add 5*4+2 = 22 bytes of hash, + NUL byte. */ final[16] = final[5]; @@ -603,36 +161,7 @@ md5_crypt(char passwd[MD5_OUT_BUFSIZE], const unsigned char *pw, const unsigned /* Don't leave anything around in vm they could use. */ memset(final, 0, sizeof(final)); - return passwd; + return result; } - -#undef MD5_SIZE_OVER_SPEED #undef MD5_MAGIC_STR #undef MD5_MAGIC_LEN -#undef __md5_Encode -#undef __md5_Decode -#undef F -#undef G -#undef H -#undef I -#undef ROTATE_LEFT -#undef FF -#undef GG -#undef HH -#undef II -#undef S11 -#undef S12 -#undef S13 -#undef S14 -#undef S21 -#undef S22 -#undef S23 -#undef S24 -#undef S31 -#undef S32 -#undef S33 -#undef S34 -#undef S41 -#undef S42 -#undef S43 -#undef S44 diff --git a/libbb/sha1.c b/libbb/sha1.c index fa468a2..76d5c8f 100644 --- a/libbb/sha1.c +++ b/libbb/sha1.c @@ -546,7 +546,7 @@ void FAST_FUNC sha512_hash(const void *buffer, size_t len, sha512_ctx_t *ctx) } -void* FAST_FUNC sha1_end(void *resbuf, sha1_ctx_t *ctx) +void FAST_FUNC sha1_end(void *resbuf, sha1_ctx_t *ctx) { /* SHA1 Final padding and digest calculation */ #if BB_BIG_ENDIAN @@ -593,8 +593,6 @@ void* FAST_FUNC sha1_end(void *resbuf, sha1_ctx_t *ctx) /* misaligned for 32-bit words */ for (i = 0; i < SHA1_DIGEST_SIZE; ++i) hval[i] = (unsigned char) (ctx->hash[i >> 2] >> 8 * (~i & 3)); - - return resbuf; } @@ -603,7 +601,7 @@ void* FAST_FUNC sha1_end(void *resbuf, sha1_ctx_t *ctx) IMPORTANT: On some systems it is required that RESBUF is correctly aligned for a 32 bits value. */ -void* FAST_FUNC sha256_end(void *resbuf, sha256_ctx_t *ctx) +void FAST_FUNC sha256_end(void *resbuf, sha256_ctx_t *ctx) { /* Take yet unprocessed bytes into account. */ uint32_t bytes = ctx->buflen; @@ -630,8 +628,6 @@ void* FAST_FUNC sha256_end(void *resbuf, sha256_ctx_t *ctx) /* Put result from CTX in first 32 bytes following RESBUF. */ for (unsigned i = 0; i < 8; ++i) ((uint32_t *) resbuf)[i] = ntohl(ctx->H[i]); - - return resbuf; } /* Process the remaining bytes in the internal buffer and the usual @@ -639,7 +635,7 @@ void* FAST_FUNC sha256_end(void *resbuf, sha256_ctx_t *ctx) IMPORTANT: On some systems it is required that RESBUF is correctly aligned for a 64 bits value. */ -void* FAST_FUNC sha512_end(void *resbuf, sha512_ctx_t *ctx) +void FAST_FUNC sha512_end(void *resbuf, sha512_ctx_t *ctx) { /* Take yet unprocessed bytes into account. */ uint64_t bytes = ctx->buflen; @@ -666,6 +662,4 @@ void* FAST_FUNC sha512_end(void *resbuf, sha512_ctx_t *ctx) /* Put result from CTX in first 64 bytes following RESBUF. */ for (unsigned i = 0; i < 8; ++i) ((uint64_t *) resbuf)[i] = hton64(ctx->H[i]); - - return resbuf; } |