diff options
Diffstat (limited to 'libtac/lib/md5.c')
-rw-r--r-- | libtac/lib/md5.c | 331 |
1 files changed, 160 insertions, 171 deletions
diff --git a/libtac/lib/md5.c b/libtac/lib/md5.c index cf6799c..7ae59ff 100644 --- a/libtac/lib/md5.c +++ b/libtac/lib/md5.c @@ -22,17 +22,17 @@ #include "md5.h" /* forward declaration */ -static void Transform (); +static void Transform __P((UINT4 *buf, UINT4 *in)); static unsigned char PADDING[64] = { - 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 + 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; /* F, G, H and I are basic MD5 functions */ @@ -47,25 +47,25 @@ static unsigned char PADDING[64] = { /* 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) + (UINT4)(ac); \ - (a) = ROTATE_LEFT ((a), (s)); \ - (a) += (b); \ - } + {(a) += F ((b), (c), (d)) + (x) + (UINT4)(ac); \ + (a) = ROTATE_LEFT ((a), (s)); \ + (a) += (b); \ + } #define GG(a, b, c, d, x, s, ac) \ - {(a) += G ((b), (c), (d)) + (x) + (UINT4)(ac); \ - (a) = ROTATE_LEFT ((a), (s)); \ - (a) += (b); \ - } + {(a) += G ((b), (c), (d)) + (x) + (UINT4)(ac); \ + (a) = ROTATE_LEFT ((a), (s)); \ + (a) += (b); \ + } #define HH(a, b, c, d, x, s, ac) \ - {(a) += H ((b), (c), (d)) + (x) + (UINT4)(ac); \ - (a) = ROTATE_LEFT ((a), (s)); \ - (a) += (b); \ - } + {(a) += H ((b), (c), (d)) + (x) + (UINT4)(ac); \ + (a) = ROTATE_LEFT ((a), (s)); \ + (a) += (b); \ + } #define II(a, b, c, d, x, s, ac) \ - {(a) += I ((b), (c), (d)) + (x) + (UINT4)(ac); \ - (a) = ROTATE_LEFT ((a), (s)); \ - (a) += (b); \ - } + {(a) += I ((b), (c), (d)) + (x) + (UINT4)(ac); \ + (a) = ROTATE_LEFT ((a), (s)); \ + (a) += (b); \ + } #ifdef __STDC__ #define UL(x) x##U @@ -76,201 +76,190 @@ static unsigned char PADDING[64] = { /* The routine MD5Init initializes the message-digest context mdContext. All fields are set to zero. */ -void MD5Init (mdContext) -MD5_CTX *mdContext; -{ - mdContext->i[0] = mdContext->i[1] = (UINT4)0; +void MD5Init (MD5_CTX *mdContext) { + mdContext->i[0] = mdContext->i[1] = (UINT4)0; - /* Load magic initialization constants. - */ - mdContext->buf[0] = (UINT4)0x67452301; - mdContext->buf[1] = (UINT4)0xefcdab89; - mdContext->buf[2] = (UINT4)0x98badcfe; - mdContext->buf[3] = (UINT4)0x10325476; + /* Load magic initialization constants. */ + mdContext->buf[0] = (UINT4)0x67452301; + mdContext->buf[1] = (UINT4)0xefcdab89; + mdContext->buf[2] = (UINT4)0x98badcfe; + mdContext->buf[3] = (UINT4)0x10325476; } /* The routine MD5Update updates the message-digest context to account for the presence of each of the characters inBuf[0..inLen-1] in the message whose digest is being computed. */ -void MD5Update (mdContext, inBuf, inLen) -MD5_CTX *mdContext; -unsigned char *inBuf; -unsigned int inLen; -{ - UINT4 in[16]; - int mdi; - unsigned int i, ii; +void MD5Update ( MD5_CTX *mdContext, unsigned char *inBuf, + unsigned int inLen) { - /* compute number of bytes mod 64 */ - mdi = (int)((mdContext->i[0] >> 3) & 0x3F); + UINT4 in[16]; + int mdi; + unsigned int i, ii; - /* update number of bits */ - if ((mdContext->i[0] + ((UINT4)inLen << 3)) < mdContext->i[0]) - mdContext->i[1]++; - mdContext->i[0] += ((UINT4)inLen << 3); - mdContext->i[1] += ((UINT4)inLen >> 29); + /* compute number of bytes mod 64 */ + mdi = (int)((mdContext->i[0] >> 3) & 0x3F); - while (inLen--) { - /* add new character to buffer, increment mdi */ - mdContext->in[mdi++] = *inBuf++; + /* update number of bits */ + if ((mdContext->i[0] + ((UINT4)inLen << 3)) < mdContext->i[0]) + mdContext->i[1]++; + mdContext->i[0] += ((UINT4)inLen << 3); + mdContext->i[1] += ((UINT4)inLen >> 29); - /* transform if necessary */ - if (mdi == 0x40) { - for (i = 0, ii = 0; i < 16; i++, ii += 4) - in[i] = (((UINT4)mdContext->in[ii+3]) << 24) | - (((UINT4)mdContext->in[ii+2]) << 16) | - (((UINT4)mdContext->in[ii+1]) << 8) | - ((UINT4)mdContext->in[ii]); - Transform (mdContext->buf, in); - mdi = 0; + while (inLen--) { + /* add new character to buffer, increment mdi */ + mdContext->in[mdi++] = *inBuf++; + + /* transform if necessary */ + if (mdi == 0x40) { + for (i = 0, ii = 0; i < 16; i++, ii += 4) + in[i] = (((UINT4)mdContext->in[ii+3]) << 24) | + (((UINT4)mdContext->in[ii+2]) << 16) | + (((UINT4)mdContext->in[ii+1]) << 8) | + ((UINT4)mdContext->in[ii]); + Transform (mdContext->buf, in); + mdi = 0; + } } - } } /* The routine MD5Final terminates the message-digest computation and ends with the desired message digest in mdContext->digest[0...15]. */ -void MD5Final (hash, mdContext) -unsigned char hash[]; -MD5_CTX *mdContext; -{ - UINT4 in[16]; - int mdi; - unsigned int i, ii; - unsigned int padLen; +void MD5Final (unsigned char hash[], MD5_CTX *mdContext) { + UINT4 in[16]; + int mdi; + unsigned int i, ii; + unsigned int padLen; - /* save number of bits */ - in[14] = mdContext->i[0]; - in[15] = mdContext->i[1]; + /* save number of bits */ + in[14] = mdContext->i[0]; + in[15] = mdContext->i[1]; - /* compute number of bytes mod 64 */ - mdi = (int)((mdContext->i[0] >> 3) & 0x3F); + /* compute number of bytes mod 64 */ + mdi = (int)((mdContext->i[0] >> 3) & 0x3F); - /* pad out to 56 mod 64 */ - padLen = (mdi < 56) ? (56 - mdi) : (120 - mdi); - MD5Update (mdContext, PADDING, padLen); + /* pad out to 56 mod 64 */ + padLen = (mdi < 56) ? (56 - mdi) : (120 - mdi); + MD5Update (mdContext, PADDING, padLen); - /* append length in bits and transform */ - for (i = 0, ii = 0; i < 14; i++, ii += 4) - in[i] = (((UINT4)mdContext->in[ii+3]) << 24) | + /* append length in bits and transform */ + for (i = 0, ii = 0; i < 14; i++, ii += 4) + in[i] = (((UINT4)mdContext->in[ii+3]) << 24) | (((UINT4)mdContext->in[ii+2]) << 16) | (((UINT4)mdContext->in[ii+1]) << 8) | ((UINT4)mdContext->in[ii]); - Transform (mdContext->buf, in); + Transform (mdContext->buf, in); - /* store buffer in digest */ - for (i = 0, ii = 0; i < 4; i++, ii += 4) { - mdContext->digest[ii] = (unsigned char)(mdContext->buf[i] & 0xFF); - mdContext->digest[ii+1] = - (unsigned char)((mdContext->buf[i] >> 8) & 0xFF); - mdContext->digest[ii+2] = - (unsigned char)((mdContext->buf[i] >> 16) & 0xFF); - mdContext->digest[ii+3] = - (unsigned char)((mdContext->buf[i] >> 24) & 0xFF); - } - memcpy(hash, mdContext->digest, 16); + /* store buffer in digest */ + for (i = 0, ii = 0; i < 4; i++, ii += 4) { + mdContext->digest[ii] = (unsigned char)(mdContext->buf[i] & 0xFF); + mdContext->digest[ii+1] = + (unsigned char)((mdContext->buf[i] >> 8) & 0xFF); + mdContext->digest[ii+2] = + (unsigned char)((mdContext->buf[i] >> 16) & 0xFF); + mdContext->digest[ii+3] = + (unsigned char)((mdContext->buf[i] >> 24) & 0xFF); + } + memcpy(hash, mdContext->digest, 16); } /* Basic MD5 step. Transforms buf based on in. */ -static void Transform (buf, in) -UINT4 *buf; -UINT4 *in; -{ - UINT4 a = buf[0], b = buf[1], c = buf[2], d = buf[3]; +static void Transform ( UINT4 *buf, UINT4 *in) { + UINT4 a = buf[0], b = buf[1], c = buf[2], d = buf[3]; - /* Round 1 */ + /* Round 1 */ #define S11 7 #define S12 12 #define S13 17 #define S14 22 - FF ( a, b, c, d, in[ 0], S11, UL(3614090360)); /* 1 */ - FF ( d, a, b, c, in[ 1], S12, UL(3905402710)); /* 2 */ - FF ( c, d, a, b, in[ 2], S13, UL( 606105819)); /* 3 */ - FF ( b, c, d, a, in[ 3], S14, UL(3250441966)); /* 4 */ - FF ( a, b, c, d, in[ 4], S11, UL(4118548399)); /* 5 */ - FF ( d, a, b, c, in[ 5], S12, UL(1200080426)); /* 6 */ - FF ( c, d, a, b, in[ 6], S13, UL(2821735955)); /* 7 */ - FF ( b, c, d, a, in[ 7], S14, UL(4249261313)); /* 8 */ - FF ( a, b, c, d, in[ 8], S11, UL(1770035416)); /* 9 */ - FF ( d, a, b, c, in[ 9], S12, UL(2336552879)); /* 10 */ - FF ( c, d, a, b, in[10], S13, UL(4294925233)); /* 11 */ - FF ( b, c, d, a, in[11], S14, UL(2304563134)); /* 12 */ - FF ( a, b, c, d, in[12], S11, UL(1804603682)); /* 13 */ - FF ( d, a, b, c, in[13], S12, UL(4254626195)); /* 14 */ - FF ( c, d, a, b, in[14], S13, UL(2792965006)); /* 15 */ - FF ( b, c, d, a, in[15], S14, UL(1236535329)); /* 16 */ + FF ( a, b, c, d, in[ 0], S11, UL(3614090360)); /* 1 */ + FF ( d, a, b, c, in[ 1], S12, UL(3905402710)); /* 2 */ + FF ( c, d, a, b, in[ 2], S13, UL( 606105819)); /* 3 */ + FF ( b, c, d, a, in[ 3], S14, UL(3250441966)); /* 4 */ + FF ( a, b, c, d, in[ 4], S11, UL(4118548399)); /* 5 */ + FF ( d, a, b, c, in[ 5], S12, UL(1200080426)); /* 6 */ + FF ( c, d, a, b, in[ 6], S13, UL(2821735955)); /* 7 */ + FF ( b, c, d, a, in[ 7], S14, UL(4249261313)); /* 8 */ + FF ( a, b, c, d, in[ 8], S11, UL(1770035416)); /* 9 */ + FF ( d, a, b, c, in[ 9], S12, UL(2336552879)); /* 10 */ + FF ( c, d, a, b, in[10], S13, UL(4294925233)); /* 11 */ + FF ( b, c, d, a, in[11], S14, UL(2304563134)); /* 12 */ + FF ( a, b, c, d, in[12], S11, UL(1804603682)); /* 13 */ + FF ( d, a, b, c, in[13], S12, UL(4254626195)); /* 14 */ + FF ( c, d, a, b, in[14], S13, UL(2792965006)); /* 15 */ + FF ( b, c, d, a, in[15], S14, UL(1236535329)); /* 16 */ - /* Round 2 */ + /* Round 2 */ #define S21 5 #define S22 9 #define S23 14 #define S24 20 - GG ( a, b, c, d, in[ 1], S21, UL(4129170786)); /* 17 */ - GG ( d, a, b, c, in[ 6], S22, UL(3225465664)); /* 18 */ - GG ( c, d, a, b, in[11], S23, UL( 643717713)); /* 19 */ - GG ( b, c, d, a, in[ 0], S24, UL(3921069994)); /* 20 */ - GG ( a, b, c, d, in[ 5], S21, UL(3593408605)); /* 21 */ - GG ( d, a, b, c, in[10], S22, UL( 38016083)); /* 22 */ - GG ( c, d, a, b, in[15], S23, UL(3634488961)); /* 23 */ - GG ( b, c, d, a, in[ 4], S24, UL(3889429448)); /* 24 */ - GG ( a, b, c, d, in[ 9], S21, UL( 568446438)); /* 25 */ - GG ( d, a, b, c, in[14], S22, UL(3275163606)); /* 26 */ - GG ( c, d, a, b, in[ 3], S23, UL(4107603335)); /* 27 */ - GG ( b, c, d, a, in[ 8], S24, UL(1163531501)); /* 28 */ - GG ( a, b, c, d, in[13], S21, UL(2850285829)); /* 29 */ - GG ( d, a, b, c, in[ 2], S22, UL(4243563512)); /* 30 */ - GG ( c, d, a, b, in[ 7], S23, UL(1735328473)); /* 31 */ - GG ( b, c, d, a, in[12], S24, UL(2368359562)); /* 32 */ + GG ( a, b, c, d, in[ 1], S21, UL(4129170786)); /* 17 */ + GG ( d, a, b, c, in[ 6], S22, UL(3225465664)); /* 18 */ + GG ( c, d, a, b, in[11], S23, UL( 643717713)); /* 19 */ + GG ( b, c, d, a, in[ 0], S24, UL(3921069994)); /* 20 */ + GG ( a, b, c, d, in[ 5], S21, UL(3593408605)); /* 21 */ + GG ( d, a, b, c, in[10], S22, UL( 38016083)); /* 22 */ + GG ( c, d, a, b, in[15], S23, UL(3634488961)); /* 23 */ + GG ( b, c, d, a, in[ 4], S24, UL(3889429448)); /* 24 */ + GG ( a, b, c, d, in[ 9], S21, UL( 568446438)); /* 25 */ + GG ( d, a, b, c, in[14], S22, UL(3275163606)); /* 26 */ + GG ( c, d, a, b, in[ 3], S23, UL(4107603335)); /* 27 */ + GG ( b, c, d, a, in[ 8], S24, UL(1163531501)); /* 28 */ + GG ( a, b, c, d, in[13], S21, UL(2850285829)); /* 29 */ + GG ( d, a, b, c, in[ 2], S22, UL(4243563512)); /* 30 */ + GG ( c, d, a, b, in[ 7], S23, UL(1735328473)); /* 31 */ + GG ( b, c, d, a, in[12], S24, UL(2368359562)); /* 32 */ - /* Round 3 */ + /* Round 3 */ #define S31 4 #define S32 11 #define S33 16 #define S34 23 - HH ( a, b, c, d, in[ 5], S31, UL(4294588738)); /* 33 */ - HH ( d, a, b, c, in[ 8], S32, UL(2272392833)); /* 34 */ - HH ( c, d, a, b, in[11], S33, UL(1839030562)); /* 35 */ - HH ( b, c, d, a, in[14], S34, UL(4259657740)); /* 36 */ - HH ( a, b, c, d, in[ 1], S31, UL(2763975236)); /* 37 */ - HH ( d, a, b, c, in[ 4], S32, UL(1272893353)); /* 38 */ - HH ( c, d, a, b, in[ 7], S33, UL(4139469664)); /* 39 */ - HH ( b, c, d, a, in[10], S34, UL(3200236656)); /* 40 */ - HH ( a, b, c, d, in[13], S31, UL( 681279174)); /* 41 */ - HH ( d, a, b, c, in[ 0], S32, UL(3936430074)); /* 42 */ - HH ( c, d, a, b, in[ 3], S33, UL(3572445317)); /* 43 */ - HH ( b, c, d, a, in[ 6], S34, UL( 76029189)); /* 44 */ - HH ( a, b, c, d, in[ 9], S31, UL(3654602809)); /* 45 */ - HH ( d, a, b, c, in[12], S32, UL(3873151461)); /* 46 */ - HH ( c, d, a, b, in[15], S33, UL( 530742520)); /* 47 */ - HH ( b, c, d, a, in[ 2], S34, UL(3299628645)); /* 48 */ + HH ( a, b, c, d, in[ 5], S31, UL(4294588738)); /* 33 */ + HH ( d, a, b, c, in[ 8], S32, UL(2272392833)); /* 34 */ + HH ( c, d, a, b, in[11], S33, UL(1839030562)); /* 35 */ + HH ( b, c, d, a, in[14], S34, UL(4259657740)); /* 36 */ + HH ( a, b, c, d, in[ 1], S31, UL(2763975236)); /* 37 */ + HH ( d, a, b, c, in[ 4], S32, UL(1272893353)); /* 38 */ + HH ( c, d, a, b, in[ 7], S33, UL(4139469664)); /* 39 */ + HH ( b, c, d, a, in[10], S34, UL(3200236656)); /* 40 */ + HH ( a, b, c, d, in[13], S31, UL( 681279174)); /* 41 */ + HH ( d, a, b, c, in[ 0], S32, UL(3936430074)); /* 42 */ + HH ( c, d, a, b, in[ 3], S33, UL(3572445317)); /* 43 */ + HH ( b, c, d, a, in[ 6], S34, UL( 76029189)); /* 44 */ + HH ( a, b, c, d, in[ 9], S31, UL(3654602809)); /* 45 */ + HH ( d, a, b, c, in[12], S32, UL(3873151461)); /* 46 */ + HH ( c, d, a, b, in[15], S33, UL( 530742520)); /* 47 */ + HH ( b, c, d, a, in[ 2], S34, UL(3299628645)); /* 48 */ - /* Round 4 */ + /* Round 4 */ #define S41 6 #define S42 10 #define S43 15 #define S44 21 - II ( a, b, c, d, in[ 0], S41, UL(4096336452)); /* 49 */ - II ( d, a, b, c, in[ 7], S42, UL(1126891415)); /* 50 */ - II ( c, d, a, b, in[14], S43, UL(2878612391)); /* 51 */ - II ( b, c, d, a, in[ 5], S44, UL(4237533241)); /* 52 */ - II ( a, b, c, d, in[12], S41, UL(1700485571)); /* 53 */ - II ( d, a, b, c, in[ 3], S42, UL(2399980690)); /* 54 */ - II ( c, d, a, b, in[10], S43, UL(4293915773)); /* 55 */ - II ( b, c, d, a, in[ 1], S44, UL(2240044497)); /* 56 */ - II ( a, b, c, d, in[ 8], S41, UL(1873313359)); /* 57 */ - II ( d, a, b, c, in[15], S42, UL(4264355552)); /* 58 */ - II ( c, d, a, b, in[ 6], S43, UL(2734768916)); /* 59 */ - II ( b, c, d, a, in[13], S44, UL(1309151649)); /* 60 */ - II ( a, b, c, d, in[ 4], S41, UL(4149444226)); /* 61 */ - II ( d, a, b, c, in[11], S42, UL(3174756917)); /* 62 */ - II ( c, d, a, b, in[ 2], S43, UL( 718787259)); /* 63 */ - II ( b, c, d, a, in[ 9], S44, UL(3951481745)); /* 64 */ + II ( a, b, c, d, in[ 0], S41, UL(4096336452)); /* 49 */ + II ( d, a, b, c, in[ 7], S42, UL(1126891415)); /* 50 */ + II ( c, d, a, b, in[14], S43, UL(2878612391)); /* 51 */ + II ( b, c, d, a, in[ 5], S44, UL(4237533241)); /* 52 */ + II ( a, b, c, d, in[12], S41, UL(1700485571)); /* 53 */ + II ( d, a, b, c, in[ 3], S42, UL(2399980690)); /* 54 */ + II ( c, d, a, b, in[10], S43, UL(4293915773)); /* 55 */ + II ( b, c, d, a, in[ 1], S44, UL(2240044497)); /* 56 */ + II ( a, b, c, d, in[ 8], S41, UL(1873313359)); /* 57 */ + II ( d, a, b, c, in[15], S42, UL(4264355552)); /* 58 */ + II ( c, d, a, b, in[ 6], S43, UL(2734768916)); /* 59 */ + II ( b, c, d, a, in[13], S44, UL(1309151649)); /* 60 */ + II ( a, b, c, d, in[ 4], S41, UL(4149444226)); /* 61 */ + II ( d, a, b, c, in[11], S42, UL(3174756917)); /* 62 */ + II ( c, d, a, b, in[ 2], S43, UL( 718787259)); /* 63 */ + II ( b, c, d, a, in[ 9], S44, UL(3951481745)); /* 64 */ - buf[0] += a; - buf[1] += b; - buf[2] += c; - buf[3] += d; + buf[0] += a; + buf[1] += b; + buf[2] += c; + buf[3] += d; } |