diff options
Diffstat (limited to 'common/gdm-md5.c')
| -rw-r--r-- | common/gdm-md5.c | 446 |
1 files changed, 223 insertions, 223 deletions
diff --git a/common/gdm-md5.c b/common/gdm-md5.c index 6a676a59..f25e9d10 100644 --- a/common/gdm-md5.c +++ b/common/gdm-md5.c @@ -1,4 +1,4 @@ -/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- +/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*- * * gdm-md5.c md5 implementation (based on L Peter Deutsch implementation) * @@ -64,24 +64,24 @@ int main(int argc, char **argv) { - int i; - for (i = 1; i <= 64; ++i) - { - unsigned long v = (unsigned long)(4294967296.0 * fabs(sin((double)i))); - - /* - * The following nonsense is only to avoid compiler warnings about - * "integer constant is unsigned in ANSI C, signed with -traditional". - */ - if (v >> 31) - { - printf("#define T%d /* 0x%08lx */ (T_MASK ^ 0x%08lx)\n", i, - v, (unsigned long)(unsigned int)(~v)); - } else { - printf("#define T%d 0x%08lx\n", i, v); - } - } - return 0; + int i; + for (i = 1; i <= 64; ++i) + { + unsigned long v = (unsigned long)(4294967296.0 * fabs(sin((double)i))); + + /* + * The following nonsense is only to avoid compiler warnings about + * "integer constant is unsigned in ANSI C, signed with -traditional". + */ + if (v >> 31) + { + printf("#define T%d /* 0x%08lx */ (T_MASK ^ 0x%08lx)\n", i, + v, (unsigned long)(unsigned int)(~v)); + } else { + printf("#define T%d 0x%08lx\n", i, v); + } + } + return 0; } #endif /* COMPUTE_T_VALUES */ /* @@ -157,234 +157,234 @@ main(int argc, char **argv) static void md5_process (GdmMD5Context *context, - const unsigned char *data /*[64]*/) + const unsigned char *data /*[64]*/) { - guint32 - a = context->abcd[0], b = context->abcd[1], - c = context->abcd[2], d = context->abcd[3]; - guint32 t; + guint32 + a = context->abcd[0], b = context->abcd[1], + c = context->abcd[2], d = context->abcd[3]; + guint32 t; #ifdef WORDS_BIGENDIAN - /* - * On big-endian machines, we must arrange the bytes in the right - * order. (This also works on machines of unknown byte order.) - */ - guint32 X[16]; - const unsigned char *xp = data; - int i; + /* + * On big-endian machines, we must arrange the bytes in the right + * order. (This also works on machines of unknown byte order.) + */ + guint32 X[16]; + const unsigned char *xp = data; + int i; - for (i = 0; i < 16; ++i, xp += 4) - X[i] = xp[0] + (xp[1] << 8) + (xp[2] << 16) + (xp[3] << 24); + for (i = 0; i < 16; ++i, xp += 4) + X[i] = xp[0] + (xp[1] << 8) + (xp[2] << 16) + (xp[3] << 24); #else /* !WORDS_BIGENDIAN */ - /* - * On little-endian machines, we can process properly aligned data - * without copying it. - */ - guint32 xbuf[16]; - const guint32 *X; - - if (!((data - (const unsigned char *)0) & 3)) - { - /* data are properly aligned */ - X = (const guint32 *)data; - } - else - { - /* not aligned */ - memcpy(xbuf, data, 64); - X = xbuf; - } + /* + * On little-endian machines, we can process properly aligned data + * without copying it. + */ + guint32 xbuf[16]; + const guint32 *X; + + if (!((data - (const unsigned char *)0) & 3)) + { + /* data are properly aligned */ + X = (const guint32 *)data; + } + else + { + /* not aligned */ + memcpy(xbuf, data, 64); + X = xbuf; + } #endif #define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32 - (n)))) - /* Round 1. */ - /* Let [abcd k s i] denote the operation - a = b + ((a + F(b,c,d) + X[k] + T[i]) <<< s). */ + /* Round 1. */ + /* Let [abcd k s i] denote the operation + a = b + ((a + F(b,c,d) + X[k] + T[i]) <<< s). */ #define F(x, y, z) (((x) & (y)) | (~(x) & (z))) #define SET(a, b, c, d, k, s, Ti) \ - t = a + F(b,c,d) + X[k] + Ti; \ - a = ROTATE_LEFT(t, s) + b - /* Do the following 16 operations. */ - SET(a, b, c, d, 0, 7, T1); - SET(d, a, b, c, 1, 12, T2); - SET(c, d, a, b, 2, 17, T3); - SET(b, c, d, a, 3, 22, T4); - SET(a, b, c, d, 4, 7, T5); - SET(d, a, b, c, 5, 12, T6); - SET(c, d, a, b, 6, 17, T7); - SET(b, c, d, a, 7, 22, T8); - SET(a, b, c, d, 8, 7, T9); - SET(d, a, b, c, 9, 12, T10); - SET(c, d, a, b, 10, 17, T11); - SET(b, c, d, a, 11, 22, T12); - SET(a, b, c, d, 12, 7, T13); - SET(d, a, b, c, 13, 12, T14); - SET(c, d, a, b, 14, 17, T15); - SET(b, c, d, a, 15, 22, T16); + t = a + F(b,c,d) + X[k] + Ti; \ + a = ROTATE_LEFT(t, s) + b + /* Do the following 16 operations. */ + SET(a, b, c, d, 0, 7, T1); + SET(d, a, b, c, 1, 12, T2); + SET(c, d, a, b, 2, 17, T3); + SET(b, c, d, a, 3, 22, T4); + SET(a, b, c, d, 4, 7, T5); + SET(d, a, b, c, 5, 12, T6); + SET(c, d, a, b, 6, 17, T7); + SET(b, c, d, a, 7, 22, T8); + SET(a, b, c, d, 8, 7, T9); + SET(d, a, b, c, 9, 12, T10); + SET(c, d, a, b, 10, 17, T11); + SET(b, c, d, a, 11, 22, T12); + SET(a, b, c, d, 12, 7, T13); + SET(d, a, b, c, 13, 12, T14); + SET(c, d, a, b, 14, 17, T15); + SET(b, c, d, a, 15, 22, T16); #undef SET - /* Round 2. */ - /* Let [abcd k s i] denote the operation - a = b + ((a + G(b,c,d) + X[k] + T[i]) <<< s). */ + /* Round 2. */ + /* Let [abcd k s i] denote the operation + a = b + ((a + G(b,c,d) + X[k] + T[i]) <<< s). */ #define G(x, y, z) (((x) & (z)) | ((y) & ~(z))) #define SET(a, b, c, d, k, s, Ti) \ - t = a + G(b,c,d) + X[k] + Ti; \ - a = ROTATE_LEFT(t, s) + b - /* Do the following 16 operations. */ - SET(a, b, c, d, 1, 5, T17); - SET(d, a, b, c, 6, 9, T18); - SET(c, d, a, b, 11, 14, T19); - SET(b, c, d, a, 0, 20, T20); - SET(a, b, c, d, 5, 5, T21); - SET(d, a, b, c, 10, 9, T22); - SET(c, d, a, b, 15, 14, T23); - SET(b, c, d, a, 4, 20, T24); - SET(a, b, c, d, 9, 5, T25); - SET(d, a, b, c, 14, 9, T26); - SET(c, d, a, b, 3, 14, T27); - SET(b, c, d, a, 8, 20, T28); - SET(a, b, c, d, 13, 5, T29); - SET(d, a, b, c, 2, 9, T30); - SET(c, d, a, b, 7, 14, T31); - SET(b, c, d, a, 12, 20, T32); + t = a + G(b,c,d) + X[k] + Ti; \ + a = ROTATE_LEFT(t, s) + b + /* Do the following 16 operations. */ + SET(a, b, c, d, 1, 5, T17); + SET(d, a, b, c, 6, 9, T18); + SET(c, d, a, b, 11, 14, T19); + SET(b, c, d, a, 0, 20, T20); + SET(a, b, c, d, 5, 5, T21); + SET(d, a, b, c, 10, 9, T22); + SET(c, d, a, b, 15, 14, T23); + SET(b, c, d, a, 4, 20, T24); + SET(a, b, c, d, 9, 5, T25); + SET(d, a, b, c, 14, 9, T26); + SET(c, d, a, b, 3, 14, T27); + SET(b, c, d, a, 8, 20, T28); + SET(a, b, c, d, 13, 5, T29); + SET(d, a, b, c, 2, 9, T30); + SET(c, d, a, b, 7, 14, T31); + SET(b, c, d, a, 12, 20, T32); #undef SET - /* Round 3. */ - /* Let [abcd k s t] denote the operation - a = b + ((a + H(b,c,d) + X[k] + T[i]) <<< s). */ + /* Round 3. */ + /* Let [abcd k s t] denote the operation + a = b + ((a + H(b,c,d) + X[k] + T[i]) <<< s). */ #define H(x, y, z) ((x) ^ (y) ^ (z)) #define SET(a, b, c, d, k, s, Ti) \ - t = a + H(b,c,d) + X[k] + Ti; \ - a = ROTATE_LEFT(t, s) + b - /* Do the following 16 operations. */ - SET(a, b, c, d, 5, 4, T33); - SET(d, a, b, c, 8, 11, T34); - SET(c, d, a, b, 11, 16, T35); - SET(b, c, d, a, 14, 23, T36); - SET(a, b, c, d, 1, 4, T37); - SET(d, a, b, c, 4, 11, T38); - SET(c, d, a, b, 7, 16, T39); - SET(b, c, d, a, 10, 23, T40); - SET(a, b, c, d, 13, 4, T41); - SET(d, a, b, c, 0, 11, T42); - SET(c, d, a, b, 3, 16, T43); - SET(b, c, d, a, 6, 23, T44); - SET(a, b, c, d, 9, 4, T45); - SET(d, a, b, c, 12, 11, T46); - SET(c, d, a, b, 15, 16, T47); - SET(b, c, d, a, 2, 23, T48); + t = a + H(b,c,d) + X[k] + Ti; \ + a = ROTATE_LEFT(t, s) + b + /* Do the following 16 operations. */ + SET(a, b, c, d, 5, 4, T33); + SET(d, a, b, c, 8, 11, T34); + SET(c, d, a, b, 11, 16, T35); + SET(b, c, d, a, 14, 23, T36); + SET(a, b, c, d, 1, 4, T37); + SET(d, a, b, c, 4, 11, T38); + SET(c, d, a, b, 7, 16, T39); + SET(b, c, d, a, 10, 23, T40); + SET(a, b, c, d, 13, 4, T41); + SET(d, a, b, c, 0, 11, T42); + SET(c, d, a, b, 3, 16, T43); + SET(b, c, d, a, 6, 23, T44); + SET(a, b, c, d, 9, 4, T45); + SET(d, a, b, c, 12, 11, T46); + SET(c, d, a, b, 15, 16, T47); + SET(b, c, d, a, 2, 23, T48); #undef SET - /* Round 4. */ - /* Let [abcd k s t] denote the operation - a = b + ((a + I(b,c,d) + X[k] + T[i]) <<< s). */ + /* Round 4. */ + /* Let [abcd k s t] denote the operation + a = b + ((a + I(b,c,d) + X[k] + T[i]) <<< s). */ #define I(x, y, z) ((y) ^ ((x) | ~(z))) #define SET(a, b, c, d, k, s, Ti) \ - t = a + I(b,c,d) + X[k] + Ti; \ - a = ROTATE_LEFT(t, s) + b - /* Do the following 16 operations. */ - SET(a, b, c, d, 0, 6, T49); - SET(d, a, b, c, 7, 10, T50); - SET(c, d, a, b, 14, 15, T51); - SET(b, c, d, a, 5, 21, T52); - SET(a, b, c, d, 12, 6, T53); - SET(d, a, b, c, 3, 10, T54); - SET(c, d, a, b, 10, 15, T55); - SET(b, c, d, a, 1, 21, T56); - SET(a, b, c, d, 8, 6, T57); - SET(d, a, b, c, 15, 10, T58); - SET(c, d, a, b, 6, 15, T59); - SET(b, c, d, a, 13, 21, T60); - SET(a, b, c, d, 4, 6, T61); - SET(d, a, b, c, 11, 10, T62); - SET(c, d, a, b, 2, 15, T63); - SET(b, c, d, a, 9, 21, T64); + t = a + I(b,c,d) + X[k] + Ti; \ + a = ROTATE_LEFT(t, s) + b + /* Do the following 16 operations. */ + SET(a, b, c, d, 0, 6, T49); + SET(d, a, b, c, 7, 10, T50); + SET(c, d, a, b, 14, 15, T51); + SET(b, c, d, a, 5, 21, T52); + SET(a, b, c, d, 12, 6, T53); + SET(d, a, b, c, 3, 10, T54); + SET(c, d, a, b, 10, 15, T55); + SET(b, c, d, a, 1, 21, T56); + SET(a, b, c, d, 8, 6, T57); + SET(d, a, b, c, 15, 10, T58); + SET(c, d, a, b, 6, 15, T59); + SET(b, c, d, a, 13, 21, T60); + SET(a, b, c, d, 4, 6, T61); + SET(d, a, b, c, 11, 10, T62); + SET(c, d, a, b, 2, 15, T63); + SET(b, c, d, a, 9, 21, T64); #undef SET - /* Then perform the following additions. (That is increment each - of the four registers by the value it had before this block - was started.) */ - context->abcd[0] += a; - context->abcd[1] += b; - context->abcd[2] += c; - context->abcd[3] += d; + /* Then perform the following additions. (That is increment each + of the four registers by the value it had before this block + was started.) */ + context->abcd[0] += a; + context->abcd[1] += b; + context->abcd[2] += c; + context->abcd[3] += d; } static void md5_init (GdmMD5Context *context) { - context->count[0] = context->count[1] = 0; - context->abcd[0] = 0x67452301; - context->abcd[1] = /*0xefcdab89*/ T_MASK ^ 0x10325476; - context->abcd[2] = /*0x98badcfe*/ T_MASK ^ 0x67452301; - context->abcd[3] = 0x10325476; + context->count[0] = context->count[1] = 0; + context->abcd[0] = 0x67452301; + context->abcd[1] = /*0xefcdab89*/ T_MASK ^ 0x10325476; + context->abcd[2] = /*0x98badcfe*/ T_MASK ^ 0x67452301; + context->abcd[3] = 0x10325476; } static void md5_append (GdmMD5Context *context, - const unsigned char *data, - int nbytes) + const unsigned char *data, + int nbytes) { - const unsigned char *p = data; - int left = nbytes; - int offset = (context->count[0] >> 3) & 63; - guint32 nbits = (guint32)(nbytes << 3); - - if (nbytes <= 0) - return; - - /* Update the message length. */ - context->count[1] += nbytes >> 29; - context->count[0] += nbits; - if (context->count[0] < nbits) - context->count[1]++; - - /* Process an initial partial block. */ - if (offset) - { - int copy = (offset + nbytes > 64 ? 64 - offset : nbytes); - - memcpy(context->buf + offset, p, copy); - if (offset + copy < 64) - return; - p += copy; - left -= copy; - md5_process(context, context->buf); - } - - /* Process full blocks. */ - for (; left >= 64; p += 64, left -= 64) - md5_process(context, p); - - /* Process a final partial block. */ - if (left) - memcpy(context->buf, p, left); + const unsigned char *p = data; + int left = nbytes; + int offset = (context->count[0] >> 3) & 63; + guint32 nbits = (guint32)(nbytes << 3); + + if (nbytes <= 0) + return; + + /* Update the message length. */ + context->count[1] += nbytes >> 29; + context->count[0] += nbits; + if (context->count[0] < nbits) + context->count[1]++; + + /* Process an initial partial block. */ + if (offset) + { + int copy = (offset + nbytes > 64 ? 64 - offset : nbytes); + + memcpy(context->buf + offset, p, copy); + if (offset + copy < 64) + return; + p += copy; + left -= copy; + md5_process(context, context->buf); + } + + /* Process full blocks. */ + for (; left >= 64; p += 64, left -= 64) + md5_process(context, p); + + /* Process a final partial block. */ + if (left) + memcpy(context->buf, p, left); } static void md5_finish (GdmMD5Context *context, - unsigned char digest[16]) + unsigned char digest[16]) { - static const unsigned char pad[64] = { - 0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 - }; - unsigned char data[8]; - int i; - - /* Save the length before padding. */ - for (i = 0; i < 8; ++i) - data[i] = (unsigned char)(context->count[i >> 2] >> ((i & 3) << 3)); - /* Pad to 56 bytes mod 64. */ - md5_append(context, pad, ((55 - (context->count[0] >> 3)) & 63) + 1); - /* Append the length. */ - md5_append(context, data, 8); - for (i = 0; i < 16; ++i) - digest[i] = (unsigned char)(context->abcd[i >> 2] >> ((i & 3) << 3)); + static const unsigned char pad[64] = { + 0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 + }; + unsigned char data[8]; + int i; + + /* Save the length before padding. */ + for (i = 0; i < 8; ++i) + data[i] = (unsigned char)(context->count[i >> 2] >> ((i & 3) << 3)); + /* Pad to 56 bytes mod 64. */ + md5_append(context, pad, ((55 - (context->count[0] >> 3)) & 63) + 1); + /* Append the length. */ + md5_append(context, data, 8); + for (i = 0; i < 16; ++i) + digest[i] = (unsigned char)(context->abcd[i >> 2] >> ((i & 3) << 3)); } /** @} */ /* End of internals */ @@ -403,7 +403,7 @@ md5_finish (GdmMD5Context *context, void gdm_md5_init (GdmMD5Context *context) { - md5_init (context); + md5_init (context); } @@ -415,15 +415,15 @@ gdm_md5_init (GdmMD5Context *context) */ void gdm_md5_update (GdmMD5Context *context, - const GString *data) + const GString *data) { - unsigned int inputLen; - unsigned char *input; + unsigned int inputLen; + unsigned char *input; - input = (unsigned char *)data->str; - inputLen = data->len; + input = (unsigned char *)data->str; + inputLen = data->len; - md5_append (context, input, inputLen); + md5_append (context, input, inputLen); } /** @@ -439,19 +439,19 @@ gdm_md5_update (GdmMD5Context *context, */ gboolean gdm_md5_final (GdmMD5Context *context, - GString *results) + GString *results) { - unsigned char digest[16]; + unsigned char digest[16]; - md5_finish (context, digest); + md5_finish (context, digest); - if (!g_string_append_len (results, digest, 16)) - return FALSE; + if (!g_string_append_len (results, digest, 16)) + return FALSE; - /* some kind of security paranoia, though it seems pointless - * to me given the nonzeroed stuff flying around - */ - memset ((void*)context, '\0', sizeof (GdmMD5Context)); + /* some kind of security paranoia, though it seems pointless + * to me given the nonzeroed stuff flying around + */ + memset ((void*)context, '\0', sizeof (GdmMD5Context)); - return TRUE; + return TRUE; } |