113 lines
2.7 KiB
Plaintext
113 lines
2.7 KiB
Plaintext
// signal input hin[256];
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// signal input inp[512];
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// signal output out[256];
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function rrot(x, n) {
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return ((x >> n) | (x << (32-n))) & 0xFFFFFFFF;
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}
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function bsigma0(x) {
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return rrot(x,2) ^ rrot(x,13) ^ rrot(x,22);
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}
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function bsigma1(x) {
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return rrot(x,6) ^ rrot(x,11) ^ rrot(x,25);
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}
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function ssigma0(x) {
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return rrot(x,7) ^ rrot(x,18) ^ (x >> 3);
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}
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function ssigma1(x) {
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return rrot(x,17) ^ rrot(x,19) ^ (x >> 10);
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}
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function Maj(x, y, z) {
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return (x&y) ^ (x&z) ^ (y&z);
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}
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function Ch(x, y, z) {
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return (x & y) ^ ((0xFFFFFFFF ^x) & z);
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}
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function sha256K(i) {
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var k[64] = [
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0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5,
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0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3, 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174,
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0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc, 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
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0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7, 0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967,
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0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13, 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85,
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0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3, 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,
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0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5, 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3,
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0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208, 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2
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];
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return k[i];
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}
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function sha256compression(hin, inp) {
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var H[8];
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var a;
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var b;
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var c;
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var d;
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var e;
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var f;
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var g;
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var h;
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var out[256];
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for (var i=0; i<8; i++) {
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H[i] = 0;
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for (var j=0; j<32; j++) {
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H[i] += hin[i*32+j] << j;
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}
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}
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a=H[0];
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b=H[1];
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c=H[2];
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d=H[3];
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e=H[4];
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f=H[5];
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g=H[6];
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h=H[7];
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var w[64];
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var T1;
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var T2;
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for (var i=0; i<64; i++) {
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if (i<16) {
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w[i]=0;
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for (var j=0; j<32; j++) {
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w[i] += inp[i*32+31-j]<<j;
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}
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} else {
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w[i] = (ssigma1(w[i-2]) + w[i-7] + ssigma0(w[i-15]) + w[i-16]) & 0xFFFFFFFF;
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}
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T1 = (h + bsigma1(e) + Ch(e,f,g) + sha256K(i) + w[i]) & 0xFFFFFFFF;
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T2 = (bsigma0(a) + Maj(a,b,c)) & 0xFFFFFFFF;
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h=g;
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g=f;
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f=e;
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e=(d+T1) & 0xFFFFFFFF;
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d=c;
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c=b;
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b=a;
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a=(T1+T2) & 0xFFFFFFFF;
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}
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H[0] = H[0] + a;
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H[1] = H[1] + b;
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H[2] = H[2] + c;
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H[3] = H[3] + d;
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H[4] = H[4] + e;
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H[5] = H[5] + f;
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H[6] = H[6] + g;
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H[7] = H[7] + h;
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for (var i=0; i<8; i++) {
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for (var j=0; j<32; j++) {
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out[i*32+31-j] = (H[i] >> j) & 1;
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}
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}
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return out;
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}
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