diff options
Diffstat (limited to 'indra/llcommon/llmd5.cpp')
| -rw-r--r-- | indra/llcommon/llmd5.cpp | 551 |
1 files changed, 253 insertions, 298 deletions
diff --git a/indra/llcommon/llmd5.cpp b/indra/llcommon/llmd5.cpp index f64f54c262..e999b8f597 100644 --- a/indra/llcommon/llmd5.cpp +++ b/indra/llcommon/llmd5.cpp @@ -68,10 +68,6 @@ documentation and/or software. */ - - - - #include "linden_common.h" #include "llmd5.h" @@ -81,232 +77,203 @@ documentation and/or software. // how many bytes to grab at a time when checking files const int LLMD5::BLOCK_LEN = 4096; - // LLMD5 simple initialization method - LLMD5::LLMD5() { - init(); + init(); } - - - // MD5 block update operation. Continues an MD5 message-digest // operation, processing another message block, and updating the // context. +void LLMD5::update(const uint8_t* input, const size_t input_length) +{ + size_t input_index, buffer_index; + size_t buffer_space; // how much space is left in buffer -void LLMD5::update (const uint8_t *input, const size_t input_length) { - - size_t input_index, buffer_index; - size_t buffer_space; // how much space is left in buffer - - if (finalized){ // so we can't update! - std::cerr << "LLMD5::update: Can't update a finalized digest!" << std::endl; - return; - } - - // Compute number of bytes mod 64 - buffer_index = size_t((count >> 3) & 0x3F); + if (finalized) + { // so we can't update! + std::cerr << "LLMD5::update: Can't update a finalized digest!" << std::endl; + return; + } - // Update number of bits - count += input_length << 3; + // Compute number of bytes mod 64 + buffer_index = size_t((count >> 3) & 0x3F); - buffer_space = 64 - buffer_index; // how much space is left in buffer + // Update number of bits + count += input_length << 3; - // now, transform each 64-byte piece of the input, bypassing the buffer - if (input == NULL || input_length == 0){ - std::cerr << "LLMD5::update: Invalid input!" << std::endl; - return; - } + buffer_space = 64 - buffer_index; // how much space is left in buffer - // Transform as many times as possible. - if (input_length >= buffer_space) { // ie. we have enough to fill the buffer - // fill the rest of the buffer and transform - memcpy( /* Flawfinder: ignore */ - buffer + buffer_index, - input, - buffer_space); - transform (buffer); + // now, transform each 64-byte piece of the input, bypassing the buffer + if (input == NULL || input_length == 0) + { + std::cerr << "LLMD5::update: Invalid input!" << std::endl; + return; + } - for (input_index = buffer_space; input_index + 63 < input_length; - input_index += 64) - transform (input+input_index); + // Transform as many times as possible. + if (input_length >= buffer_space) // ie. we have enough to fill the buffer + { + // fill the rest of the buffer and transform + memcpy(/* Flawfinder: ignore */ + buffer + buffer_index, + input, + buffer_space); + transform(buffer); - buffer_index = 0; // so we can buffer remaining - } - else - input_index=0; // so we can buffer the whole input + for (input_index = buffer_space; input_index + 63 < input_length; input_index += 64) + transform(input + input_index); + buffer_index = 0; // so we can buffer remaining + } + else + input_index = 0; // so we can buffer the whole input - // and here we do the buffering: - memcpy(buffer+buffer_index, input+input_index, input_length-input_index); /* Flawfinder: ignore */ + // and here we do the buffering: + memcpy(buffer + buffer_index, input + input_index, input_length - input_index); /* Flawfinder: ignore */ } - - // MD5 update for files. // Like above, except that it works on files (and uses above as a primitive.) +void LLMD5::update(FILE* file) +{ + unsigned char buffer[BLOCK_LEN]; /* Flawfinder: ignore */ + int len; -void LLMD5::update(FILE* file){ - - unsigned char buffer[BLOCK_LEN]; /* Flawfinder: ignore */ - int len; - - while ( (len=(int)fread(buffer, 1, BLOCK_LEN, file)) ) - update(buffer, len); - - fclose (file); + while ((len = (int)fread(buffer, 1, BLOCK_LEN, file))) + update(buffer, len); + fclose(file); } // MD5 update for istreams. // Like update for files; see above. +void LLMD5::update(std::istream& stream) +{ + unsigned char buffer[BLOCK_LEN]; /* Flawfinder: ignore */ + int len; -void LLMD5::update(std::istream& stream){ - - unsigned char buffer[BLOCK_LEN]; /* Flawfinder: ignore */ - int len; - - while (stream.good()){ - stream.read( (char*)buffer, BLOCK_LEN); /* Flawfinder: ignore */ // note that return value of read is unusable. - len=(int)stream.gcount(); - update(buffer, len); - } - + while (stream.good()) + { + stream.read((char*)buffer, BLOCK_LEN); /* Flawfinder: ignore */ // note that return value of read is unusable. + len = (int)stream.gcount(); + update(buffer, len); + } } -void LLMD5::update(const std::string& s) +void LLMD5::update(const std::string& s) { - update((unsigned char *)s.c_str(),s.length()); + update((unsigned char*)s.c_str(), s.length()); } // MD5 finalization. Ends an MD5 message-digest operation, writing the // the message digest and zeroizing the context. - - -void LLMD5::finalize (){ - - unsigned char bits[8]; /* Flawfinder: ignore */ - size_t index, padLen; - static uint8_t PADDING[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 +void LLMD5::finalize() +{ + unsigned char bits[8]; /* Flawfinder: ignore */ + size_t index, padLen; + static uint8_t PADDING[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 }; - if (finalized){ - std::cerr << "LLMD5::finalize: Already finalized this digest!" << std::endl; - return; - } - - // Save number of bits. - // Treat count, a uint64_t, as uint32_t[2]. - encode (bits, reinterpret_cast<uint32_t*>(&count), 8); + if (finalized) + { + std::cerr << "LLMD5::finalize: Already finalized this digest!" << std::endl; + return; + } - // Pad out to 56 mod 64. - index = size_t((count >> 3) & 0x3f); - padLen = (index < 56) ? (56 - index) : (120 - index); - update (PADDING, padLen); + // Save number of bits. + // Treat count, a uint64_t, as uint32_t[2]. + encode(bits, reinterpret_cast<uint32_t*>(&count), 8); - // Append length (before padding) - update (bits, 8); + // Pad out to 56 mod 64. + index = size_t((count >> 3) & 0x3f); + padLen = (index < 56) ? (56 - index) : (120 - index); + update(PADDING, padLen); - // Store state in digest - encode (digest, state, 16); + // Append length (before padding) + update(bits, 8); - // Zeroize sensitive information - memset (buffer, 0, sizeof(*buffer)); + // Store state in digest + encode(digest, state, 16); - finalized=1; + // Zeroize sensitive information + memset(buffer, 0, sizeof(buffer)); + finalized = true; } - - - -LLMD5::LLMD5(FILE *file){ - - init(); // must be called be all constructors - update(file); - finalize (); +LLMD5::LLMD5(FILE* file) +{ + init(); // must be called be all constructors + update(file); + finalize(); } - - - -LLMD5::LLMD5(std::istream& stream){ - - init(); // must called by all constructors - update (stream); - finalize(); +LLMD5::LLMD5(std::istream& stream) +{ + init(); // must called by all constructors + update(stream); + finalize(); } // Digest a string of the format ("%s:%i" % (s, number)) -LLMD5::LLMD5(const unsigned char *string, const unsigned int number) +LLMD5::LLMD5(const unsigned char* string, const unsigned int number) { - const char *colon = ":"; - char tbuf[16]; /* Flawfinder: ignore */ + const char* colon = ":"; + char tbuf[16]; /* Flawfinder: ignore */ init(); - update(string, (U32)strlen((const char *) string)); /* Flawfinder: ignore */ - update((const unsigned char *) colon, (U32)strlen(colon)); /* Flawfinder: ignore */ - snprintf(tbuf, sizeof(tbuf), "%i", number); /* Flawfinder: ignore */ - update((const unsigned char *) tbuf, (U32)strlen(tbuf)); /* Flawfinder: ignore */ + update(string, (U32)strlen((const char*)string)); /* Flawfinder: ignore */ + update((const unsigned char*)colon, (U32)strlen(colon)); /* Flawfinder: ignore */ + snprintf(tbuf, sizeof(tbuf), "%i", number); /* Flawfinder: ignore */ + update((const unsigned char*)tbuf, (U32)strlen(tbuf)); /* Flawfinder: ignore */ finalize(); } // Digest a string -LLMD5::LLMD5(const unsigned char *s) +LLMD5::LLMD5(const unsigned char* s) { init(); - update(s, (U32)strlen((const char *) s)); /* Flawfinder: ignore */ + update(s, (U32)strlen((const char*)s)); /* Flawfinder: ignore */ finalize(); } -void LLMD5::raw_digest(unsigned char *s) const +void LLMD5::raw_digest(unsigned char* s) const { if (!finalized) { - std::cerr << "LLMD5::raw_digest: Can't get digest if you haven't "<< - "finalized the digest!" << std::endl; + std::cerr << "LLMD5::raw_digest: Can't get digest if you haven't " + << "finalized the digest!" << std::endl; s[0] = '\0'; return; } - memcpy(s, digest, 16); /* Flawfinder: ignore */ - return; + memcpy(s, digest, 16); /* Flawfinder: ignore */ } - - -void LLMD5::hex_digest(char *s) const +void LLMD5::hex_digest(char* s) const { - int i; - if (!finalized) { - std::cerr << "LLMD5::hex_digest: Can't get digest if you haven't "<< - "finalized the digest!" <<std::endl; + std::cerr << "LLMD5::hex_digest: Can't get digest if you haven't " + << "finalized the digest!" << std::endl; s[0] = '\0'; return; } - for (i=0; i<16; i++) + for (int i = 0; i < 16; i++) { - sprintf(s+i*2, "%02x", digest[i]); /* Flawfinder: ignore */ + sprintf(s + i * 2, "%02x", digest[i]); /* Flawfinder: ignore */ } - s[32]='\0'; - - return; + s[32] = '\0'; } - - - - - -std::ostream& operator<<(std::ostream &stream, LLMD5 context) +std::ostream& operator<<(std::ostream& stream, const LLMD5& context) { char s[33]; /* Flawfinder: ignore */ context.hex_digest(s); @@ -320,7 +287,7 @@ bool operator==(const LLMD5& a, const LLMD5& b) unsigned char b_guts[16]; a.raw_digest(a_guts); b.raw_digest(b_guts); - if (memcmp(a_guts,b_guts,16)==0) + if (memcmp(a_guts, b_guts, 16) == 0) return true; else return false; @@ -328,30 +295,27 @@ bool operator==(const LLMD5& a, const LLMD5& b) bool operator!=(const LLMD5& a, const LLMD5& b) { - return !(a==b); + return !(a == b); } // PRIVATE METHODS: +void LLMD5::init() +{ + finalized = false; // we just started! -void LLMD5::init(){ - finalized=0; // we just started! - - // Nothing counted, so count=0 - count = 0; + // Nothing counted, so count=0 + count = 0; - // Load magic initialization constants. - state[0] = 0x67452301; - state[1] = 0xefcdab89; - state[2] = 0x98badcfe; - state[3] = 0x10325476; + // Load magic initialization constants. + state[0] = 0x67452301; + state[1] = 0xefcdab89; + state[2] = 0x98badcfe; + state[3] = 0x10325476; } - - // Constants for MD5Transform routine. // Although we could use C++ style constants, defines are actually better, // since they let us easily evade scope clashes. - #define S11 7 #define S12 12 #define S13 17 @@ -381,153 +345,144 @@ void LLMD5::init(){ /* ROTATE_LEFT rotates x left n bits. */ -#define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32-(n)))) +#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) + (U32)(ac); \ - (a) = ROTATE_LEFT ((a), (s)); \ - (a) += (b); \ - } -#define GG(a, b, c, d, x, s, ac) { \ - (a) += G ((b), (c), (d)) + (x) + (U32)(ac); \ - (a) = ROTATE_LEFT ((a), (s)); \ - (a) += (b); \ - } -#define HH(a, b, c, d, x, s, ac) { \ - (a) += H ((b), (c), (d)) + (x) + (U32)(ac); \ - (a) = ROTATE_LEFT ((a), (s)); \ - (a) += (b); \ - } -#define II(a, b, c, d, x, s, ac) { \ - (a) += I ((b), (c), (d)) + (x) + (U32)(ac); \ - (a) = ROTATE_LEFT ((a), (s)); \ - (a) += (b); \ - } - - +#define FF(a, b, c, d, x, s, ac) \ + { \ + (a) += F((b), (c), (d)) + (x) + (U32)(ac); \ + (a) = ROTATE_LEFT((a), (s)); \ + (a) += (b); \ + } +#define GG(a, b, c, d, x, s, ac) \ + { \ + (a) += G((b), (c), (d)) + (x) + (U32)(ac); \ + (a) = ROTATE_LEFT((a), (s)); \ + (a) += (b); \ + } +#define HH(a, b, c, d, x, s, ac) \ + { \ + (a) += H((b), (c), (d)) + (x) + (U32)(ac); \ + (a) = ROTATE_LEFT((a), (s)); \ + (a) += (b); \ + } +#define II(a, b, c, d, x, s, ac) \ + { \ + (a) += I((b), (c), (d)) + (x) + (U32)(ac); \ + (a) = ROTATE_LEFT((a), (s)); \ + (a) += (b); \ + } // LLMD5 basic transformation. Transforms state based on block. -void LLMD5::transform (const U8 block[64]){ - - uint32_t a = state[0], b = state[1], c = state[2], d = state[3], x[16]; - - decode (x, block, 64); - - assert(!finalized); // not just a user error, since the method is private - - /* Round 1 */ - 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 */ - 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 */ - 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 */ - 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 */ - - state[0] += a; - state[1] += b; - state[2] += c; - state[3] += d; - - // Zeroize sensitive information. - memset ( (uint8_t *) x, 0, sizeof(x)); - +void LLMD5::transform(const U8 block[64]) +{ + uint32_t a = state[0], b = state[1], c = state[2], d = state[3], x[16]; + + decode(x, block, 64); + + assert(!finalized); // not just a user error, since the method is private + + /* Round 1 */ + 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 */ + 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 */ + 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 */ + 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 */ + + state[0] += a; + state[1] += b; + state[2] += c; + state[3] += d; + + // Zeroize sensitive information. + memset(x, 0, sizeof(x)); } - - // Encodes input (uint32_t) into output (unsigned char). Assumes len is // a multiple of 4. -void LLMD5::encode (uint8_t *output, const uint32_t *input, const size_t len) { - - size_t i, j; - - for (i = 0, j = 0; j < len; i++, j += 4) { - output[j] = (uint8_t) (input[i] & 0xff); - output[j+1] = (uint8_t) ((input[i] >> 8) & 0xff); - output[j+2] = (uint8_t) ((input[i] >> 16) & 0xff); - output[j+3] = (uint8_t) ((input[i] >> 24) & 0xff); - } +void LLMD5::encode(uint8_t* output, const uint32_t* input, const size_t len) +{ + for (size_t i = 0, j = 0; j < len; i++, j += 4) + { + output[j] = (uint8_t)(input[i] & 0xff); + output[j + 1] = (uint8_t)((input[i] >> 8) & 0xff); + output[j + 2] = (uint8_t)((input[i] >> 16) & 0xff); + output[j + 3] = (uint8_t)((input[i] >> 24) & 0xff); + } } - - - // Decodes input (unsigned char) into output (uint32_t). Assumes len is // a multiple of 4. -void LLMD5::decode (uint32_t *output, const uint8_t *input, const size_t len){ - - size_t 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); +void LLMD5::decode(uint32_t* output, const uint8_t* input, const size_t len) +{ + for (size_t 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); } - - |