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Diffstat (limited to 'src/utils/sha2.cpp')
| -rw-r--r-- | src/utils/sha2.cpp | 675 |
1 files changed, 0 insertions, 675 deletions
diff --git a/src/utils/sha2.cpp b/src/utils/sha2.cpp deleted file mode 100644 index b2bf9c1e..00000000 --- a/src/utils/sha2.cpp +++ /dev/null @@ -1,675 +0,0 @@ -/*************************************************************
-
- This program is a C++ implementation of the Secure Hash Algorithm (SHA)
- that handles the variations from the original 160 bit to 224, 256, 384
- and 512 bit. The program is intended to be platform independant and
- has been tested on little-endian (Intel) and big-endian (Sun) machines.
-
- This program is based on a C version written by Aaron D. Gifford
- (as of 11/22/2004 his code could be found at http://www.adg.us/computers/sha.html).
- Attempts to contact him were unsuccessful. I greatly condensed his version
- and shared as much code and data as I could think of. I also inlined
- a lot of code that were macros in his version. My version detects
- endian-ness automatically and adjusts itself accordingly. This program
- has been tested with Visual C++ versions 6/7 and Dev-C++ on Windows,
- g++ on Linux and CC on Solaris (g++ on Solaris gave a bus error).
-
- While I did make half-hearted attempts to optimize as I went along
- (testing on Wintel), any serious attempt at fast implementation is
- probably going to need to make use of in-lined assembly which is not
- very portable.
-
- The goal of this implementation is ease of use. As much as possible
- I tried to hide implementation details while making it trivial to change
- the size of the hash and get the results. The string and charactar
- array value of the hash is supplied as human-readable hex; the raw value
- can also be obtained.
-
- If you use this implementation somewhere I would like to be credited
- with my work (a link to my page below is fine). I add no license
- restriction beyond any that is made by the original author. This
- code comes with no warrenty expressed or implied, use at your own
- risk!
-
- Keith Oxenrider
- koxenrider[at]sol[dash]biotech[dot]com
- The latest version of this code should be available via the page
- sol-biotech.com/code.
-
-*************************************************************/
-
-#include "sha2.h"
-
-#include <iostream>
-
-using namespace std;
-
-// Hash constant words K for SHA-1:
-const sha_word32 K1_0_TO_19 = 0x5a827999UL;
-const sha_word32 K1_20_TO_39 = 0x6ed9eba1UL;
-const sha_word32 K1_40_TO_59 = 0x8f1bbcdcUL;
-const sha_word32 K1_60_TO_79 = 0xca62c1d6UL;
-
-
-
-//** SHA2 INITIAL HASH VALUES AND CONSTANTS **************************
-
-// Initial hash value H for SHA-1:
-const static sha_word32 sha1_initial_hash_value[5] = {
- 0x67452301UL, 0xefcdab89UL, 0x98badcfeUL, 0x10325476UL,
- 0xc3d2e1f0UL
-};
-
-// Hash constant words K for SHA-224 and SHA-256:
-const static sha_word32 K256[64] = {
- 0x428a2f98UL, 0x71374491UL, 0xb5c0fbcfUL, 0xe9b5dba5UL,
- 0x3956c25bUL, 0x59f111f1UL, 0x923f82a4UL, 0xab1c5ed5UL,
- 0xd807aa98UL, 0x12835b01UL, 0x243185beUL, 0x550c7dc3UL,
- 0x72be5d74UL, 0x80deb1feUL, 0x9bdc06a7UL, 0xc19bf174UL,
- 0xe49b69c1UL, 0xefbe4786UL, 0x0fc19dc6UL, 0x240ca1ccUL,
- 0x2de92c6fUL, 0x4a7484aaUL, 0x5cb0a9dcUL, 0x76f988daUL,
- 0x983e5152UL, 0xa831c66dUL, 0xb00327c8UL, 0xbf597fc7UL,
- 0xc6e00bf3UL, 0xd5a79147UL, 0x06ca6351UL, 0x14292967UL,
- 0x27b70a85UL, 0x2e1b2138UL, 0x4d2c6dfcUL, 0x53380d13UL,
- 0x650a7354UL, 0x766a0abbUL, 0x81c2c92eUL, 0x92722c85UL,
- 0xa2bfe8a1UL, 0xa81a664bUL, 0xc24b8b70UL, 0xc76c51a3UL,
- 0xd192e819UL, 0xd6990624UL, 0xf40e3585UL, 0x106aa070UL,
- 0x19a4c116UL, 0x1e376c08UL, 0x2748774cUL, 0x34b0bcb5UL,
- 0x391c0cb3UL, 0x4ed8aa4aUL, 0x5b9cca4fUL, 0x682e6ff3UL,
- 0x748f82eeUL, 0x78a5636fUL, 0x84c87814UL, 0x8cc70208UL,
- 0x90befffaUL, 0xa4506cebUL, 0xbef9a3f7UL, 0xc67178f2UL
-};
-
-// Initial hash value H for SHA-224:
-const static sha_word32 sha224_initial_hash_value[8] = {
- 0xc1059ed8UL, 0x367cd507UL, 0x3070dd17UL, 0xf70e5939UL,
- 0xffc00b31UL, 0x68581511UL, 0x64f98fa7UL, 0xbefa4fa4UL
-};
-
-// Initial hash value H for SHA-256:
-const static sha_word32 sha256_initial_hash_value[8] = {
- 0x6a09e667UL, 0xbb67ae85UL, 0x3c6ef372UL, 0xa54ff53aUL,
- 0x510e527fUL, 0x9b05688cUL, 0x1f83d9abUL, 0x5be0cd19UL
-};
-
-// ui64 Hash constant words K for SHA-384 and SHA-512:
-#ifdef _VC6
- const static sha_word64 K512[80] = {
- 0x428a2f98d728ae22ui64, 0x7137449123ef65cdui64,
- 0xb5c0fbcfec4d3b2fui64, 0xe9b5dba58189dbbcui64,
- 0x3956c25bf348b538ui64, 0x59f111f1b605d019ui64,
- 0x923f82a4af194f9bui64, 0xab1c5ed5da6d8118ui64,
- 0xd807aa98a3030242ui64, 0x12835b0145706fbeui64,
- 0x243185be4ee4b28cui64, 0x550c7dc3d5ffb4e2ui64,
- 0x72be5d74f27b896fui64, 0x80deb1fe3b1696b1ui64,
- 0x9bdc06a725c71235ui64, 0xc19bf174cf692694ui64,
- 0xe49b69c19ef14ad2ui64, 0xefbe4786384f25e3ui64,
- 0x0fc19dc68b8cd5b5ui64, 0x240ca1cc77ac9c65ui64,
- 0x2de92c6f592b0275ui64, 0x4a7484aa6ea6e483ui64,
- 0x5cb0a9dcbd41fbd4ui64, 0x76f988da831153b5ui64,
- 0x983e5152ee66dfabui64, 0xa831c66d2db43210ui64,
- 0xb00327c898fb213fui64, 0xbf597fc7beef0ee4ui64,
- 0xc6e00bf33da88fc2ui64, 0xd5a79147930aa725ui64,
- 0x06ca6351e003826fui64, 0x142929670a0e6e70ui64,
- 0x27b70a8546d22ffcui64, 0x2e1b21385c26c926ui64,
- 0x4d2c6dfc5ac42aedui64, 0x53380d139d95b3dfui64,
- 0x650a73548baf63deui64, 0x766a0abb3c77b2a8ui64,
- 0x81c2c92e47edaee6ui64, 0x92722c851482353bui64,
- 0xa2bfe8a14cf10364ui64, 0xa81a664bbc423001ui64,
- 0xc24b8b70d0f89791ui64, 0xc76c51a30654be30ui64,
- 0xd192e819d6ef5218ui64, 0xd69906245565a910ui64,
- 0xf40e35855771202aui64, 0x106aa07032bbd1b8ui64,
- 0x19a4c116b8d2d0c8ui64, 0x1e376c085141ab53ui64,
- 0x2748774cdf8eeb99ui64, 0x34b0bcb5e19b48a8ui64,
- 0x391c0cb3c5c95a63ui64, 0x4ed8aa4ae3418acbui64,
- 0x5b9cca4f7763e373ui64, 0x682e6ff3d6b2b8a3ui64,
- 0x748f82ee5defb2fcui64, 0x78a5636f43172f60ui64,
- 0x84c87814a1f0ab72ui64, 0x8cc702081a6439ecui64,
- 0x90befffa23631e28ui64, 0xa4506cebde82bde9ui64,
- 0xbef9a3f7b2c67915ui64, 0xc67178f2e372532bui64,
- 0xca273eceea26619cui64, 0xd186b8c721c0c207ui64,
- 0xeada7dd6cde0eb1eui64, 0xf57d4f7fee6ed178ui64,
- 0x06f067aa72176fbaui64, 0x0a637dc5a2c898a6ui64,
- 0x113f9804bef90daeui64, 0x1b710b35131c471bui64,
- 0x28db77f523047d84ui64, 0x32caab7b40c72493ui64,
- 0x3c9ebe0a15c9bebcui64, 0x431d67c49c100d4cui64,
- 0x4cc5d4becb3e42b6ui64, 0x597f299cfc657e2aui64,
- 0x5fcb6fab3ad6faecui64, 0x6c44198c4a475817ui64
- };
- // Initial hash value H for SHA-384
- const static sha_word64 sha384_initial_hash_value[8] = {
- 0xcbbb9d5dc1059ed8ui64, 0x629a292a367cd507ui64,
- 0x9159015a3070dd17ui64, 0x152fecd8f70e5939ui64,
- 0x67332667ffc00b31ui64, 0x8eb44a8768581511ui64,
- 0xdb0c2e0d64f98fa7ui64, 0x47b5481dbefa4fa4ui64
- };
-
- // Initial hash value H for SHA-512
- const static sha_word64 sha512_initial_hash_value[8] = {
- 0x6a09e667f3bcc908ui64, 0xbb67ae8584caa73bui64,
- 0x3c6ef372fe94f82bui64, 0xa54ff53a5f1d36f1ui64,
- 0x510e527fade682d1ui64, 0x9b05688c2b3e6c1fui64,
- 0x1f83d9abfb41bd6bui64, 0x5be0cd19137e2179ui64
- };
-#else
- const static sha_word64 K512[80] = {
- 0x428a2f98d728ae22ULL, 0x7137449123ef65cdULL,
- 0xb5c0fbcfec4d3b2fULL, 0xe9b5dba58189dbbcULL,
- 0x3956c25bf348b538ULL, 0x59f111f1b605d019ULL,
- 0x923f82a4af194f9bULL, 0xab1c5ed5da6d8118ULL,
- 0xd807aa98a3030242ULL, 0x12835b0145706fbeULL,
- 0x243185be4ee4b28cULL, 0x550c7dc3d5ffb4e2ULL,
- 0x72be5d74f27b896fULL, 0x80deb1fe3b1696b1ULL,
- 0x9bdc06a725c71235ULL, 0xc19bf174cf692694ULL,
- 0xe49b69c19ef14ad2ULL, 0xefbe4786384f25e3ULL,
- 0x0fc19dc68b8cd5b5ULL, 0x240ca1cc77ac9c65ULL,
- 0x2de92c6f592b0275ULL, 0x4a7484aa6ea6e483ULL,
- 0x5cb0a9dcbd41fbd4ULL, 0x76f988da831153b5ULL,
- 0x983e5152ee66dfabULL, 0xa831c66d2db43210ULL,
- 0xb00327c898fb213fULL, 0xbf597fc7beef0ee4ULL,
- 0xc6e00bf33da88fc2ULL, 0xd5a79147930aa725ULL,
- 0x06ca6351e003826fULL, 0x142929670a0e6e70ULL,
- 0x27b70a8546d22ffcULL, 0x2e1b21385c26c926ULL,
- 0x4d2c6dfc5ac42aedULL, 0x53380d139d95b3dfULL,
- 0x650a73548baf63deULL, 0x766a0abb3c77b2a8ULL,
- 0x81c2c92e47edaee6ULL, 0x92722c851482353bULL,
- 0xa2bfe8a14cf10364ULL, 0xa81a664bbc423001ULL,
- 0xc24b8b70d0f89791ULL, 0xc76c51a30654be30ULL,
- 0xd192e819d6ef5218ULL, 0xd69906245565a910ULL,
- 0xf40e35855771202aULL, 0x106aa07032bbd1b8ULL,
- 0x19a4c116b8d2d0c8ULL, 0x1e376c085141ab53ULL,
- 0x2748774cdf8eeb99ULL, 0x34b0bcb5e19b48a8ULL,
- 0x391c0cb3c5c95a63ULL, 0x4ed8aa4ae3418acbULL,
- 0x5b9cca4f7763e373ULL, 0x682e6ff3d6b2b8a3ULL,
- 0x748f82ee5defb2fcULL, 0x78a5636f43172f60ULL,
- 0x84c87814a1f0ab72ULL, 0x8cc702081a6439ecULL,
- 0x90befffa23631e28ULL, 0xa4506cebde82bde9ULL,
- 0xbef9a3f7b2c67915ULL, 0xc67178f2e372532bULL,
- 0xca273eceea26619cULL, 0xd186b8c721c0c207ULL,
- 0xeada7dd6cde0eb1eULL, 0xf57d4f7fee6ed178ULL,
- 0x06f067aa72176fbaULL, 0x0a637dc5a2c898a6ULL,
- 0x113f9804bef90daeULL, 0x1b710b35131c471bULL,
- 0x28db77f523047d84ULL, 0x32caab7b40c72493ULL,
- 0x3c9ebe0a15c9bebcULL, 0x431d67c49c100d4cULL,
- 0x4cc5d4becb3e42b6ULL, 0x597f299cfc657e2aULL,
- 0x5fcb6fab3ad6faecULL, 0x6c44198c4a475817ULL
- };
- // Initial hash value H for SHA-384
- const static sha_word64 sha384_initial_hash_value[8] = {
- 0xcbbb9d5dc1059ed8ULL, 0x629a292a367cd507ULL,
- 0x9159015a3070dd17ULL, 0x152fecd8f70e5939ULL,
- 0x67332667ffc00b31ULL, 0x8eb44a8768581511ULL,
- 0xdb0c2e0d64f98fa7ULL, 0x47b5481dbefa4fa4ULL
- };
-
- // Initial hash value H for SHA-512
- const static sha_word64 sha512_initial_hash_value[8] = {
- 0x6a09e667f3bcc908ULL, 0xbb67ae8584caa73bULL,
- 0x3c6ef372fe94f82bULL, 0xa54ff53a5f1d36f1ULL,
- 0x510e527fade682d1ULL, 0x9b05688c2b3e6c1fULL,
- 0x1f83d9abfb41bd6bULL, 0x5be0cd19137e2179ULL
- };
-#endif
-
-/*
- * Constant used by SHA224/256/384/512_End() functions for converting the
- * digest to a readable hexadecimal character string:
- */
-static const char *sha_hex_digits = "0123456789abcdef";
-
-
-void sha2::SHA1_Internal_Transform(const sha_word32 *data) {
- sha_word32 a, b, c, d, e;
- sha_word32 *state = (sha_word32*)ctx.state;
- sha_word32 T1, T2, *W1=(sha_word32*)ctx.buffer;
- int j;
-
-// Initialize registers with the prev. intermediate value
- a = state[0];
- b = state[1];
- c = state[2];
- d = state[3];
- e = state[4];
- j = 0;
- do {
- if (m_boolIsBigEndian) W1[j] = *data++;
- else REVERSE32(*data++, W1[j]);// Copy data while converting to host byte order
- T1 = ROTL32(5, a) + Ch(b, c, d) + e + K1_0_TO_19 + W1[j];
- e = d;
- d = c;
- c = ROTL32(30, b);
- b = a;
- a = T1;
- j++;
- } while (j < 16);
-
- do {
- T1 = W1[(j+13)&0x0f] ^ W1[(j+8)&0x0f] ^ W1[(j+2)&0x0f] ^ W1[j&0x0f];
- if (j < 20) T2 = Ch(b,c,d) + K1_0_TO_19;
- else if (j < 40) T2 = Parity(b,c,d) + K1_20_TO_39;
- else if (j < 60) T2 = Maj(b,c,d) + K1_40_TO_59;
- else T2 = Parity(b,c,d) + K1_60_TO_79;
- T1 = ROTL32(5, a) + T2 + e + (W1[j&0x0f] = ROTL32(1, T1));
- e = d;
- d = c;
- c = ROTL32(30, b);
- b = a;
- a = T1;
- j++;
- } while (j < 80);
-
- state[0] += a;
- state[1] += b;
- state[2] += c;
- state[3] += d;
- state[4] += e;
-}
-
-
-
-///* SHA-256: ********************************************************
-
-void sha2::SHA256_Internal_Transform(const sha_word32* data) {
- sha_word32 a, b, c, d, e, f, g, h, s0, s1;
- sha_word32 *state = (sha_word32*)ctx.state;
- sha_word32 T1, T2, *W256=(sha_word32*)ctx.buffer;;
- int j;
-
-// Initialize registers with the prev. intermediate value
- a = state[0];
- b = state[1];
- c = state[2];
- d = state[3];
- e = state[4];
- f = state[5];
- g = state[6];
- h = state[7];
-
- j = 0;
- do {
- if (m_boolIsBigEndian) W256[j] = *data++;
- else REVERSE32(*data++,W256[j]);// Copy data while converting to host byte order
-
- T1 = h + Sigma1_256(e) + Ch(e, f, g) + K256[j] + W256[j];
- T2 = Sigma0_256(a) + Maj(a, b, c);
- h = g;
- g = f;
- f = e;
- e = d + T1;
- d = c;
- c = b;
- b = a;
- a = T1 + T2;
-
- j++;
- } while (j < 16);
-
- do {
-// Part of the message block expansion:
- s0 = W256[(j+1)&0x0f];
- s0 = sigma0_256(s0);
- s1 = W256[(j+14)&0x0f];
- s1 = sigma1_256(s1);
-
-// Apply the SHA-256 compression function to update a..h
- T1 = h + Sigma1_256(e) + Ch(e, f, g) + K256[j] +
- (W256[j&0x0f] += s1 + W256[(j+9)&0x0f] + s0);
- T2 = Sigma0_256(a) + Maj(a, b, c);
- h = g;
- g = f;
- f = e;
- e = d + T1;
- d = c;
- c = b;
- b = a;
- a = T1 + T2;
-
- j++;
- } while (j < 64);
-
-// Compute the current intermediate hash value
- state[0] += a;
- state[1] += b;
- state[2] += c;
- state[3] += d;
- state[4] += e;
- state[5] += f;
- state[6] += g;
- state[7] += h;
-}
-
-//** SHA-512: ********************************************************
-
-void sha2::SHA512_Internal_Transform(const sha_word64* data) {
- sha_word64 a, b, c, d, e, f, g, h, s0, s1;
- sha_word64 *state = (sha_word64 *)ctx.state;
- sha_word64 T1, T2, *W512 = (sha_word64*)ctx.buffer;
- int j;
-
-// Initialize registers with the prev. intermediate value
- a = state[0];
- b = state[1];
- c = state[2];
- d = state[3];
- e = state[4];
- f = state[5];
- g = state[6];
- h = state[7];
-
- j = 0;
-
- do {
-
- if (m_boolIsBigEndian){
- W512[j] = *data;
- data++;
- }else{
- REVERSE64(*data++, W512[j]);// copy and convert TO host byte order
- }
-
- T1 = h + Sigma1_512(e) + Ch(e, f, g) + K512[j] + W512[j];
- T2 = Sigma0_512(a) + Maj(a, b, c);
- h = g;
- g = f;
- f = e;
- e = d + T1;
- d = c;
- c = b;
- b = a;
- a = T1 + T2;
-
- j++;
- } while (j < 16);
-
- do {
-// Part of the message block expansion:
- s0 = W512[(j+1)&0x0f];
- s0 = sigma0_512(s0);
- s1 = W512[(j+14)&0x0f];
- s1 = sigma1_512(s1);
-
-// Apply the SHA-512 compression function to update a..h
- T1 = h + Sigma1_512(e) + Ch(e, f, g) + K512[j] +
- (W512[j&0x0f] += s1 + W512[(j+9)&0x0f] + s0);
- T2 = Sigma0_512(a) + Maj(a, b, c);
- h = g;
- g = f;
- f = e;
- e = d + T1;
- d = c;
- c = b;
- b = a;
- a = T1 + T2;
-
- j++;
- } while (j < 80);
-
-// Compute the current intermediate hash value
- state[0] += a;
- state[1] += b;
- state[2] += c;
- state[3] += d;
- state[4] += e;
- state[5] += f;
- state[6] += g;
- state[7] += h;
-}
-
-
-void sha2::SHA256_Internal_Last(bool isSha1) {
- sha_word32 usedspace;
-
- usedspace = (sha_word32)(ctx.bitcount[0] >> 3) % 64;
- if (usedspace == 0) {
- MEMSET_BZERO(ctx.buffer, 56);
- ctx.buffer[0] = 0x80;
- }else {
- ctx.buffer[usedspace++] = 0x80;
- if (usedspace <= 56) {
- MEMSET_BZERO(&ctx.buffer[usedspace], 56 - usedspace);
- }else {
- if (usedspace < 64) {
- MEMSET_BZERO(&ctx.buffer[usedspace], 64 - usedspace);
- }
- if (isSha1) SHA1_Internal_Transform((sha_word32*)ctx.buffer);
- else SHA256_Internal_Transform((sha_word32*)ctx.buffer);
- MEMSET_BZERO(ctx.buffer, 56);
- }
- }
-
- if (!m_boolIsBigEndian) REVERSE64(ctx.bitcount[0],ctx.bitcount[0]);
- *(sha_word64*)&ctx.buffer[56] = ctx.bitcount[0];
- if (isSha1) SHA1_Internal_Transform((sha_word32*)ctx.buffer);
- else SHA256_Internal_Transform((sha_word32*)ctx.buffer);
-}
-
-
-void sha2::SHA512_Internal_Last() {
- sha_word32 usedspace;
-
- usedspace = (sha_word32)(ctx.bitcount[0] >> 3) % 128;
- if (usedspace == 0) {
- MEMSET_BZERO(ctx.buffer, 112);
- ctx.buffer[0] = 0x80;
- }else{
- ctx.buffer[usedspace++] = 0x80;
- if (usedspace <= 112) {
- MEMSET_BZERO(&ctx.buffer[usedspace], 112 - usedspace);
- }else {
- if (usedspace < 128) {
- MEMSET_BZERO(&ctx.buffer[usedspace], 128 - usedspace);
- }
- SHA512_Internal_Transform((sha_word64*)ctx.buffer);
- MEMSET_BZERO(ctx.buffer, 112);
- }
- usedspace = 0;
- }
-
- if (!m_boolIsBigEndian){
- REVERSE64(ctx.bitcount[0],ctx.bitcount[0]);
- REVERSE64(ctx.bitcount[1],ctx.bitcount[1]);
- }
-
- *(sha_word64*)&ctx.buffer[112] = ctx.bitcount[1];
- *(sha_word64*)&ctx.buffer[120] = ctx.bitcount[0];
- SHA512_Internal_Transform((sha_word64*)ctx.buffer);
-}
-
-
-
-void sha2::SHA32bit_Update(const sha_byte *data, size_t len, bool isSha1) {
- sha_word32 freespace, usedspace;
-
- if (len<1){return;}// Calling with no data is valid - we do nothing
-
- usedspace = (sha_word32)(ctx.bitcount[0] >> 3) % 64;
- if (usedspace > 0) {// Calculate how much free space is available in the buffer
- freespace = 64 - usedspace;
- if (len >= freespace) {// Fill the buffer completely and process it
- MEMCPY_BCOPY(&ctx.buffer[usedspace], data, freespace);
- ctx.bitcount[0] += freespace << 3;
- len -= freespace;
- data += freespace;
- if (isSha1) SHA1_Internal_Transform((sha_word32 *)ctx.buffer);
- else SHA256_Internal_Transform((sha_word32 *)ctx.buffer);
- }else {// The buffer is not yet full
- MEMCPY_BCOPY(&ctx.buffer[usedspace], data, len);
- ctx.bitcount[0] += len << 3;
- return;
- }
- }
- while (len >= 64) {// Process as many complete blocks as we can
- if (isSha1) SHA1_Internal_Transform((sha_word32*)data);
- else SHA256_Internal_Transform((sha_word32*)data);
- ctx.bitcount[0] += 512;
- len -= 64;
- data += 64;
- }
- if (len > 0) {// There's left-overs, so save 'em
- MEMCPY_BCOPY(&ctx.buffer, data, len);
- ctx.bitcount[0] += len << 3;
- }
-}
-
-
-
-void sha2::SHA64bit_Update(const sha_byte *data, size_t len) {
- sha_word32 freespace, usedspace;
-
- if (len < 1){return;}// Calling with no data is valid - we do nothing
-
- usedspace = (sha_word32)(ctx.bitcount[0] >> 3) % 128;
- if (usedspace > 0) {// Calculate how much free space is available in the buffer
- freespace = 128 - usedspace;
- if (len >= freespace) {// Fill the buffer completely and process it
- MEMCPY_BCOPY(&ctx.buffer[usedspace], data, freespace);
- ADDINC128(ctx.bitcount, freespace << 3);
- len -= freespace;
- data += freespace;
- SHA512_Internal_Transform((sha_word64*)ctx.buffer);
- }else {// The buffer is not yet full
- MEMCPY_BCOPY(&ctx.buffer[usedspace], data, len);
- ADDINC128(ctx.bitcount, len << 3);
- return;
- }
- }
- while (len >= 128) {// Process as many complete blocks as we can
- SHA512_Internal_Transform((sha_word64*)data);
- ADDINC128(ctx.bitcount, 1024);
- len -= 128;
- data += 128;
- }
- if (len > 0) {// There's left-overs, so save 'em
- MEMCPY_BCOPY(ctx.buffer, data, len);
- ADDINC128(ctx.bitcount, len << 3);
- }
-}
-
-
-/*
- *
- *
- *
- * Public interfaces...
- *
- *
- *
- */
-
-void sha2::Init(SHA_TYPE type){
- m_Type = type;
- m_boolEnded = false;
- MEMSET_BZERO(&ctx, sizeof(SHA_CTX));
- switch (m_Type){
- case enuSHA1 : MEMCPY_BCOPY(ctx.state, sha1_initial_hash_value, sizeof(sha_word32) * 5); break;
- case enuSHA224 : MEMCPY_BCOPY(ctx.state, sha224_initial_hash_value, sizeof(sha_word32) * 8); break;
- case enuSHA256 : MEMCPY_BCOPY(ctx.state, sha256_initial_hash_value, sizeof(sha_word32) * 8); break;
- case enuSHA384 : MEMCPY_BCOPY(ctx.state, sha384_initial_hash_value, sizeof(sha_word64) * 8); break;
- case enuSHA512 : MEMCPY_BCOPY(ctx.state, sha512_initial_hash_value, sizeof(sha_word64) * 8); break;
- default : throw std::runtime_error("Invalid SHA_TYPE type!");
- }
-}
-
-
-void sha2::Update(const sha_byte* data, size_t len){
- switch (m_Type){
- case enuSHA1 : SHA32bit_Update(data, len, true); break;
- case enuSHA224 : SHA32bit_Update(data, len); break;
- case enuSHA256 : SHA32bit_Update(data, len); break;
- case enuSHA384 : SHA64bit_Update(data, len); break;
- case enuSHA512 : SHA64bit_Update(data, len); break;
- default : throw std::runtime_error("Invalid SHA_TYPE type!");
- }
-}
-
-
-void sha2::End(){
- sha_byte *d = m_digest;
- char *buf = m_chrHexHash;
- int i, j, diglen, statecnt=8;
- bool is64bit=false;
- sha_word32 *state32=(sha_word32 *)ctx.state;
- sha_word64 *state64=(sha_word64 *)ctx.state;
-
- switch (m_Type){
- case enuSHA1 : {
- SHA256_Internal_Last(true);
- statecnt = 5;
- diglen = SHA1_DIGESTC_LENGTH;
- break;
- }
- case enuSHA224 : {
- SHA256_Internal_Last();
- diglen = SHA224_DIGESTC_LENGTH;
- break;
- }
- case enuSHA256 : {
- SHA256_Internal_Last();
- diglen = SHA256_DIGESTC_LENGTH;
- break;
- }
- case enuSHA384 : {
- SHA512_Internal_Last();
- is64bit = true;
- diglen = SHA384_DIGESTC_LENGTH;
- break;
- }
- case enuSHA512 : {
- SHA512_Internal_Last();
- is64bit = true;
- diglen = SHA512_DIGESTC_LENGTH;
- break;
- }
- default : throw std::runtime_error("Invalid SHA_TYPE type!");
- }
- if (m_boolIsBigEndian){
- MEMCPY_BCOPY(&m_digest, &ctx.state, diglen);
- }else{
- sha_byte *dp = m_digest, *ptr;
- for (i=0; i<statecnt; i++){
- if (is64bit) ptr = (sha_byte *)&state64[i];
- else ptr = (sha_byte *)&state32[i];
- for (j = is64bit ? 7 : 3; j>-1; --j) *dp++ = ptr[j];
- }
- }
-
- for (i=0; i<diglen; i++) {
- *buf++ = sha_hex_digits[(*d & 0xf0) >> 4];
- *buf++ = sha_hex_digits[*d & 0x0f];
- d++;
- }
- *buf = (char)0;
- m_strHash = m_chrHexHash;
- m_boolEnded = true;
-}
-
-const string &sha2::GetHash(SHA_TYPE type, const sha_byte* data, size_t len){
- Init(type);
- Update(data, len);
- End();
- return m_strHash;
-}
-
-
-
-const char *sha2::HexHash(){
- if (!m_boolEnded) throw std::runtime_error("Unfinished execution!");
- return m_strHash.c_str();
-}
-const string &sha2::StringHash(){
- if (!m_boolEnded) throw std::runtime_error("Unfinished execution!");
- return m_strHash;
-}
-const char *sha2::RawHash(int &length){
- if (!m_boolEnded) throw std::runtime_error("Unfinished execution!");
- switch (m_Type){
- case enuSHA1 : length = SHA1_DIGESTC_LENGTH; break;
- case enuSHA224 : length = SHA224_DIGESTC_LENGTH; break;
- case enuSHA256 : length = SHA256_DIGESTC_LENGTH; break;
- case enuSHA384 : length = SHA384_DIGESTC_LENGTH; break;
- case enuSHA512 : length = SHA512_DIGESTC_LENGTH; break;
- default : length = 0;
- }
- return (const char *)m_digest;
-}
-
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