1176 lines
32 KiB
JavaScript
1176 lines
32 KiB
JavaScript
(function(nacl) {
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'use strict';
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// Ported in 2014 by Dmitry Chestnykh and Devi Mandiri.
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// Public domain.
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//
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// Implementation derived from TweetNaCl version 20140427.
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// See for details: http://tweetnacl.cr.yp.to/
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var u64 = function(h, l) { this.hi = h|0 >>> 0; this.lo = l|0 >>> 0; };
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var gf = function(init) {
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var i, r = new Float64Array(16);
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if (init) for (i = 0; i < init.length; i++) r[i] = init[i];
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return r;
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};
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// Pluggable, initialized in high-level API below.
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var randombytes = function(/* x, n */) { throw new Error('no PRNG'); };
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var _0 = new Uint8Array(16);
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var _9 = new Uint8Array(32); _9[0] = 9;
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var gf0 = gf(),
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gf1 = gf([1]),
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_121665 = gf([0xdb41, 1]),
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D = gf([0x78a3, 0x1359, 0x4dca, 0x75eb, 0xd8ab, 0x4141, 0x0a4d, 0x0070, 0xe898, 0x7779, 0x4079, 0x8cc7, 0xfe73, 0x2b6f, 0x6cee, 0x5203]),
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D2 = gf([0xf159, 0x26b2, 0x9b94, 0xebd6, 0xb156, 0x8283, 0x149a, 0x00e0, 0xd130, 0xeef3, 0x80f2, 0x198e, 0xfce7, 0x56df, 0xd9dc, 0x2406]),
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X = gf([0xd51a, 0x8f25, 0x2d60, 0xc956, 0xa7b2, 0x9525, 0xc760, 0x692c, 0xdc5c, 0xfdd6, 0xe231, 0xc0a4, 0x53fe, 0xcd6e, 0x36d3, 0x2169]),
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Y = gf([0x6658, 0x6666, 0x6666, 0x6666, 0x6666, 0x6666, 0x6666, 0x6666, 0x6666, 0x6666, 0x6666, 0x6666, 0x6666, 0x6666, 0x6666, 0x6666]),
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I = gf([0xa0b0, 0x4a0e, 0x1b27, 0xc4ee, 0xe478, 0xad2f, 0x1806, 0x2f43, 0xd7a7, 0x3dfb, 0x0099, 0x2b4d, 0xdf0b, 0x4fc1, 0x2480, 0x2b83]);
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function L32(x, c) { return (x << c) | (x >>> (32 - c)); }
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function ld32(x, i) {
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var u = x[i+3] & 0xff;
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u = (u<<8)|(x[i+2] & 0xff);
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u = (u<<8)|(x[i+1] & 0xff);
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return (u<<8)|(x[i+0] & 0xff);
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}
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function dl64(x, i) {
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var h = (x[i] << 24) | (x[i+1] << 16) | (x[i+2] << 8) | x[i+3];
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var l = (x[i+4] << 24) | (x[i+5] << 16) | (x[i+6] << 8) | x[i+7];
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return new u64(h, l);
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}
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function st32(x, j, u) {
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var i;
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for (i = 0; i < 4; i++) { x[j+i] = u & 255; u >>>= 8; }
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}
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function ts64(x, i, u) {
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x[i] = (u.hi >> 24) & 0xff;
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x[i+1] = (u.hi >> 16) & 0xff;
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x[i+2] = (u.hi >> 8) & 0xff;
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x[i+3] = u.hi & 0xff;
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x[i+4] = (u.lo >> 24) & 0xff;
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x[i+5] = (u.lo >> 16) & 0xff;
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x[i+6] = (u.lo >> 8) & 0xff;
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x[i+7] = u.lo & 0xff;
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}
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function vn(x, xi, y, yi, n) {
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var i,d = 0;
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for (i = 0; i < n; i++) d |= x[xi+i]^y[yi+i];
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return (1 & ((d - 1) >>> 8)) - 1;
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}
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function crypto_verify_16(x, xi, y, yi) {
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return vn(x,xi,y,yi,16);
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}
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function crypto_verify_32(x, xi, y, yi) {
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return vn(x,xi,y,yi,32);
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}
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function core(out,inp,k,c,h) {
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var w = new Uint32Array(16), x = new Uint32Array(16),
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y = new Uint32Array(16), t = new Uint32Array(4);
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var i, j, m;
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for (i = 0; i < 4; i++) {
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x[5*i] = ld32(c, 4*i);
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x[1+i] = ld32(k, 4*i);
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x[6+i] = ld32(inp, 4*i);
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x[11+i] = ld32(k, 16+4*i);
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}
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for (i = 0; i < 16; i++) y[i] = x[i];
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for (i = 0; i < 20; i++) {
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for (j = 0; j < 4; j++) {
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for (m = 0; m < 4; m++) t[m] = x[(5*j+4*m)%16];
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t[1] ^= L32((t[0]+t[3])|0, 7);
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t[2] ^= L32((t[1]+t[0])|0, 9);
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t[3] ^= L32((t[2]+t[1])|0,13);
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t[0] ^= L32((t[3]+t[2])|0,18);
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for (m = 0; m < 4; m++) w[4*j+(j+m)%4] = t[m];
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}
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for (m = 0; m < 16; m++) x[m] = w[m];
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}
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if (h) {
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for (i = 0; i < 16; i++) x[i] = (x[i] + y[i]) | 0;
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for (i = 0; i < 4; i++) {
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x[5*i] = (x[5*i] - ld32(c, 4*i)) | 0;
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x[6+i] = (x[6+i] - ld32(inp, 4*i)) | 0;
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}
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for (i = 0; i < 4; i++) {
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st32(out,4*i,x[5*i]);
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st32(out,16+4*i,x[6+i]);
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}
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} else {
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for (i = 0; i < 16; i++) st32(out, 4 * i, (x[i] + y[i]) | 0);
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}
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}
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function crypto_core_salsa20(out,inp,k,c) {
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core(out,inp,k,c,false);
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return 0;
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}
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function crypto_core_hsalsa20(out,inp,k,c) {
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core(out,inp,k,c,true);
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return 0;
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}
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var sigma = new Uint8Array([101, 120, 112, 97, 110, 100, 32, 51, 50, 45, 98, 121, 116, 101, 32, 107]);
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// "expand 32-byte k"
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function crypto_stream_salsa20_xor(c,cpos,m,mpos,b,n,k) {
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var z = new Uint8Array(16), x = new Uint8Array(64);
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var u, i;
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if (!b) return 0;
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for (i = 0; i < 16; i++) z[i] = 0;
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for (i = 0; i < 8; i++) z[i] = n[i];
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while (b >= 64) {
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crypto_core_salsa20(x,z,k,sigma);
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for (i = 0; i < 64; i++) c[cpos+i] = (m?m[mpos+i]:0) ^ x[i];
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u = 1;
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for (i = 8; i < 16; i++) {
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u = u + (z[i] & 0xff) | 0;
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z[i] = u & 0xff;
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u >>>= 8;
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}
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b -= 64;
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cpos += 64;
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if (m) mpos += 64;
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}
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if (b > 0) {
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crypto_core_salsa20(x,z,k,sigma);
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for (i = 0; i < b; i++) c[cpos+i] = (m?m[mpos+i]:0) ^ x[i];
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}
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return 0;
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}
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function crypto_stream_salsa20(c,cpos,d,n,k) {
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return crypto_stream_salsa20_xor(c,cpos,null,0,d,n,k);
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}
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function crypto_stream(c,cpos,d,n,k) {
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var s = new Uint8Array(32);
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crypto_core_hsalsa20(s,n,k,sigma);
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return crypto_stream_salsa20(c,cpos,d,n.subarray(16),s);
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}
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function crypto_stream_xor(c,cpos,m,mpos,d,n,k) {
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var s = new Uint8Array(32);
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crypto_core_hsalsa20(s,n,k,sigma);
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return crypto_stream_salsa20_xor(c,cpos,m,mpos,d,n.subarray(16),s);
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}
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function add1305(h, c) {
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var j, u = 0;
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for (j = 0; j < 17; j++) {
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u = (u + ((h[j] + c[j]) | 0)) | 0;
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h[j] = u & 255;
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u >>>= 8;
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}
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}
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var minusp = new Uint32Array([
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5, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 252
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]);
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function crypto_onetimeauth(out, outpos, m, mpos, n, k) {
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var s, i, j, u;
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var x = new Uint32Array(17), r = new Uint32Array(17),
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h = new Uint32Array(17), c = new Uint32Array(17),
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g = new Uint32Array(17);
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for (j = 0; j < 17; j++) r[j]=h[j]=0;
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for (j = 0; j < 16; j++) r[j]=k[j];
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r[3]&=15;
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r[4]&=252;
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r[7]&=15;
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r[8]&=252;
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r[11]&=15;
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r[12]&=252;
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r[15]&=15;
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while (n > 0) {
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for (j = 0; j < 17; j++) c[j] = 0;
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for (j = 0; (j < 16) && (j < n); ++j) c[j] = m[mpos+j];
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c[j] = 1;
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mpos += j; n -= j;
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add1305(h,c);
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for (i = 0; i < 17; i++) {
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x[i] = 0;
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for (j = 0; j < 17; j++) x[i] = (x[i] + (h[j] * ((j <= i) ? r[i - j] : ((320 * r[i + 17 - j])|0))) | 0) | 0;
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}
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for (i = 0; i < 17; i++) h[i] = x[i];
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u = 0;
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for (j = 0; j < 16; j++) {
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u = (u + h[j]) | 0;
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h[j] = u & 255;
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u >>>= 8;
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}
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u = (u + h[16]) | 0; h[16] = u & 3;
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u = (5 * (u >>> 2)) | 0;
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for (j = 0; j < 16; j++) {
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u = (u + h[j]) | 0;
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h[j] = u & 255;
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u >>>= 8;
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}
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u = (u + h[16]) | 0; h[16] = u;
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}
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for (j = 0; j < 17; j++) g[j] = h[j];
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add1305(h,minusp);
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s = (-(h[16] >>> 7) | 0);
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for (j = 0; j < 17; j++) h[j] ^= s & (g[j] ^ h[j]);
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for (j = 0; j < 16; j++) c[j] = k[j + 16];
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c[16] = 0;
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add1305(h,c);
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for (j = 0; j < 16; j++) out[outpos+j] = h[j];
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return 0;
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}
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function crypto_onetimeauth_verify(h, hpos, m, mpos, n, k) {
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var x = new Uint8Array(16);
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crypto_onetimeauth(x,0,m,mpos,n,k);
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return crypto_verify_16(h,hpos,x,0);
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}
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function crypto_secretbox(c,m,d,n,k) {
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var i;
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if (d < 32) return -1;
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crypto_stream_xor(c,0,m,0,d,n,k);
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crypto_onetimeauth(c, 16, c, 32, d - 32, c);
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for (i = 0; i < 16; i++) c[i] = 0;
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return 0;
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}
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function crypto_secretbox_open(m,c,d,n,k) {
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var i;
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var x = new Uint8Array(32);
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if (d < 32) return -1;
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crypto_stream(x,0,32,n,k);
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if (crypto_onetimeauth_verify(c, 16,c, 32,d - 32,x) !== 0) return -1;
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crypto_stream_xor(m,0,c,0,d,n,k);
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for (i = 0; i < 32; i++) m[i] = 0;
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return 0;
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}
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function set25519(r, a) {
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var i;
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for (i = 0; i < 16; i++) r[i] = a[i]|0;
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}
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function car25519(o) {
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var c;
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var i;
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for (i = 0; i < 16; i++) {
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o[i] += 65536;
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c = Math.floor(o[i] / 65536);
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o[(i+1)*(i<15?1:0)] += c - 1 + 37 * (c-1) * (i===15?1:0);
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o[i] -= (c * 65536);
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}
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}
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function sel25519(p, q, b) {
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var t, c = ~(b-1);
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for (var i = 0; i < 16; i++) {
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t = c & (p[i] ^ q[i]);
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p[i] ^= t;
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q[i] ^= t;
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}
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}
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function pack25519(o, n) {
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var i, j, b;
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var m = gf(), t = gf();
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for (i = 0; i < 16; i++) t[i] = n[i];
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car25519(t);
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car25519(t);
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car25519(t);
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for (j = 0; j < 2; j++) {
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m[0] = t[0] - 0xffed;
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for (i = 1; i < 15; i++) {
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m[i] = t[i] - 0xffff - ((m[i-1]>>16) & 1);
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m[i-1] &= 0xffff;
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}
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m[15] = t[15] - 0x7fff - ((m[14]>>16) & 1);
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b = (m[15]>>16) & 1;
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m[14] &= 0xffff;
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sel25519(t, m, 1-b);
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}
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for (i = 0; i < 16; i++) {
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o[2*i] = t[i] & 0xff;
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o[2*i+1] = t[i]>>8;
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}
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}
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function neq25519(a, b) {
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var c = new Uint8Array(32), d = new Uint8Array(32);
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pack25519(c, a);
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pack25519(d, b);
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return crypto_verify_32(c, 0, d, 0);
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}
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function par25519(a) {
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var d = new Uint8Array(32);
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pack25519(d, a);
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return d[0] & 1;
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}
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function unpack25519(o, n) {
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var i;
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for (i = 0; i < 16; i++) o[i] = n[2*i] + (n[2*i+1] << 8);
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o[15] &= 0x7fff;
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}
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function A(o, a, b) {
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var i;
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for (i = 0; i < 16; i++) o[i] = (a[i] + b[i])|0;
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}
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function Z(o, a, b) {
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var i;
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for (i = 0; i < 16; i++) o[i] = (a[i] - b[i])|0;
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}
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function M(o, a, b) {
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var i, j, t = new Float64Array(31);
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for (i = 0; i < 31; i++) t[i] = 0;
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for (i = 0; i < 16; i++) {
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for (j = 0; j < 16; j++) {
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t[i+j] += a[i] * b[j];
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}
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}
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for (i = 0; i < 15; i++) {
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t[i] += 38 * t[i+16];
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}
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for (i = 0; i < 16; i++) o[i] = t[i];
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car25519(o);
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car25519(o);
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}
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function S(o, a) {
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M(o, a, a);
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}
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function inv25519(o, i) {
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var c = gf();
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var a;
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for (a = 0; a < 16; a++) c[a] = i[a];
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for (a = 253; a >= 0; a--) {
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S(c, c);
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if(a !== 2 && a !== 4) M(c, c, i);
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}
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for (a = 0; a < 16; a++) o[a] = c[a];
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}
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function pow2523(o, i) {
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var c = gf();
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var a;
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for (a = 0; a < 16; a++) c[a] = i[a];
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for (a = 250; a >= 0; a--) {
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S(c, c);
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if(a !== 1) M(c, c, i);
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}
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for (a = 0; a < 16; a++) o[a] = c[a];
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}
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function crypto_scalarmult(q, n, p) {
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var z = new Uint8Array(32);
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var x = new Float64Array(80), r, i;
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var a = gf(), b = gf(), c = gf(),
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d = gf(), e = gf(), f = gf();
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for (i = 0; i < 31; i++) z[i] = n[i];
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z[31]=(n[31]&127)|64;
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z[0]&=248;
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unpack25519(x,p);
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for (i = 0; i < 16; i++) {
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b[i]=x[i];
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d[i]=a[i]=c[i]=0;
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}
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a[0]=d[0]=1;
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for (i=254; i>=0; --i) {
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r=(z[i>>>3]>>>(i&7))&1;
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sel25519(a,b,r);
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sel25519(c,d,r);
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A(e,a,c);
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Z(a,a,c);
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A(c,b,d);
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Z(b,b,d);
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S(d,e);
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S(f,a);
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M(a,c,a);
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M(c,b,e);
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A(e,a,c);
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Z(a,a,c);
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S(b,a);
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Z(c,d,f);
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M(a,c,_121665);
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A(a,a,d);
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M(c,c,a);
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M(a,d,f);
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M(d,b,x);
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S(b,e);
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sel25519(a,b,r);
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sel25519(c,d,r);
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}
|
|
for (i = 0; i < 16; i++) {
|
|
x[i+16]=a[i];
|
|
x[i+32]=c[i];
|
|
x[i+48]=b[i];
|
|
x[i+64]=d[i];
|
|
}
|
|
var x32 = x.subarray(32);
|
|
var x16 = x.subarray(16);
|
|
inv25519(x32,x32);
|
|
M(x16,x16,x32);
|
|
pack25519(q,x16);
|
|
return 0;
|
|
}
|
|
|
|
function crypto_scalarmult_base(q, n) {
|
|
return crypto_scalarmult(q, n, _9);
|
|
}
|
|
|
|
function crypto_box_keypair(y, x) {
|
|
randombytes(x, 32);
|
|
return crypto_scalarmult_base(y, x);
|
|
}
|
|
|
|
function crypto_box_beforenm(k, y, x) {
|
|
var s = new Uint8Array(32);
|
|
crypto_scalarmult(s, x, y);
|
|
return crypto_core_hsalsa20(k, _0, s, sigma);
|
|
}
|
|
|
|
var crypto_box_afternm = crypto_secretbox;
|
|
var crypto_box_open_afternm = crypto_secretbox_open;
|
|
|
|
function crypto_box(c, m, d, n, y, x) {
|
|
var k = new Uint8Array(32);
|
|
crypto_box_beforenm(k, y, x);
|
|
return crypto_box_afternm(c, m, d, n, k);
|
|
}
|
|
|
|
function crypto_box_open(m, c, d, n, y, x) {
|
|
var k = new Uint8Array(32);
|
|
crypto_box_beforenm(k, y, x);
|
|
return crypto_box_open_afternm(m, c, d, n, k);
|
|
}
|
|
|
|
function add64() {
|
|
var a = 0, b = 0, c = 0, d = 0, m16 = 65535, l, h, i;
|
|
for (i = 0; i < arguments.length; i++) {
|
|
l = arguments[i].lo;
|
|
h = arguments[i].hi;
|
|
a += (l & m16); b += (l >>> 16);
|
|
c += (h & m16); d += (h >>> 16);
|
|
}
|
|
|
|
b += (a >>> 16);
|
|
c += (b >>> 16);
|
|
d += (c >>> 16);
|
|
|
|
return new u64((c & m16) | (d << 16), (a & m16) | (b << 16));
|
|
}
|
|
|
|
function shr64(x, c) {
|
|
return new u64((x.hi >>> c), (x.lo >>> c) | (x.hi << (32 - c)));
|
|
}
|
|
|
|
function xor64() {
|
|
var l = 0, h = 0, i;
|
|
for (i = 0; i < arguments.length; i++) {
|
|
l ^= arguments[i].lo;
|
|
h ^= arguments[i].hi;
|
|
}
|
|
return new u64(h, l);
|
|
}
|
|
|
|
function R(x, c) {
|
|
var h, l, c1 = 32 - c;
|
|
if (c < 32) {
|
|
h = (x.hi >>> c) | (x.lo << c1);
|
|
l = (x.lo >>> c) | (x.hi << c1);
|
|
} else if (c < 64) {
|
|
h = (x.lo >>> c) | (x.hi << c1);
|
|
l = (x.hi >>> c) | (x.lo << c1);
|
|
}
|
|
return new u64(h, l);
|
|
}
|
|
|
|
function Ch(x, y, z) {
|
|
var h = (x.hi & y.hi) ^ (~x.hi & z.hi),
|
|
l = (x.lo & y.lo) ^ (~x.lo & z.lo);
|
|
return new u64(h, l);
|
|
}
|
|
|
|
function Maj(x, y, z) {
|
|
var h = (x.hi & y.hi) ^ (x.hi & z.hi) ^ (y.hi & z.hi),
|
|
l = (x.lo & y.lo) ^ (x.lo & z.lo) ^ (y.lo & z.lo);
|
|
return new u64(h, l);
|
|
}
|
|
|
|
function Sigma0(x) { return xor64(R(x,28), R(x,34), R(x,39)); }
|
|
function Sigma1(x) { return xor64(R(x,14), R(x,18), R(x,41)); }
|
|
function sigma0(x) { return xor64(R(x, 1), R(x, 8), shr64(x,7)); }
|
|
function sigma1(x) { return xor64(R(x,19), R(x,61), shr64(x,6)); }
|
|
|
|
var K = [
|
|
new u64(0x428a2f98, 0xd728ae22), new u64(0x71374491, 0x23ef65cd),
|
|
new u64(0xb5c0fbcf, 0xec4d3b2f), new u64(0xe9b5dba5, 0x8189dbbc),
|
|
new u64(0x3956c25b, 0xf348b538), new u64(0x59f111f1, 0xb605d019),
|
|
new u64(0x923f82a4, 0xaf194f9b), new u64(0xab1c5ed5, 0xda6d8118),
|
|
new u64(0xd807aa98, 0xa3030242), new u64(0x12835b01, 0x45706fbe),
|
|
new u64(0x243185be, 0x4ee4b28c), new u64(0x550c7dc3, 0xd5ffb4e2),
|
|
new u64(0x72be5d74, 0xf27b896f), new u64(0x80deb1fe, 0x3b1696b1),
|
|
new u64(0x9bdc06a7, 0x25c71235), new u64(0xc19bf174, 0xcf692694),
|
|
new u64(0xe49b69c1, 0x9ef14ad2), new u64(0xefbe4786, 0x384f25e3),
|
|
new u64(0x0fc19dc6, 0x8b8cd5b5), new u64(0x240ca1cc, 0x77ac9c65),
|
|
new u64(0x2de92c6f, 0x592b0275), new u64(0x4a7484aa, 0x6ea6e483),
|
|
new u64(0x5cb0a9dc, 0xbd41fbd4), new u64(0x76f988da, 0x831153b5),
|
|
new u64(0x983e5152, 0xee66dfab), new u64(0xa831c66d, 0x2db43210),
|
|
new u64(0xb00327c8, 0x98fb213f), new u64(0xbf597fc7, 0xbeef0ee4),
|
|
new u64(0xc6e00bf3, 0x3da88fc2), new u64(0xd5a79147, 0x930aa725),
|
|
new u64(0x06ca6351, 0xe003826f), new u64(0x14292967, 0x0a0e6e70),
|
|
new u64(0x27b70a85, 0x46d22ffc), new u64(0x2e1b2138, 0x5c26c926),
|
|
new u64(0x4d2c6dfc, 0x5ac42aed), new u64(0x53380d13, 0x9d95b3df),
|
|
new u64(0x650a7354, 0x8baf63de), new u64(0x766a0abb, 0x3c77b2a8),
|
|
new u64(0x81c2c92e, 0x47edaee6), new u64(0x92722c85, 0x1482353b),
|
|
new u64(0xa2bfe8a1, 0x4cf10364), new u64(0xa81a664b, 0xbc423001),
|
|
new u64(0xc24b8b70, 0xd0f89791), new u64(0xc76c51a3, 0x0654be30),
|
|
new u64(0xd192e819, 0xd6ef5218), new u64(0xd6990624, 0x5565a910),
|
|
new u64(0xf40e3585, 0x5771202a), new u64(0x106aa070, 0x32bbd1b8),
|
|
new u64(0x19a4c116, 0xb8d2d0c8), new u64(0x1e376c08, 0x5141ab53),
|
|
new u64(0x2748774c, 0xdf8eeb99), new u64(0x34b0bcb5, 0xe19b48a8),
|
|
new u64(0x391c0cb3, 0xc5c95a63), new u64(0x4ed8aa4a, 0xe3418acb),
|
|
new u64(0x5b9cca4f, 0x7763e373), new u64(0x682e6ff3, 0xd6b2b8a3),
|
|
new u64(0x748f82ee, 0x5defb2fc), new u64(0x78a5636f, 0x43172f60),
|
|
new u64(0x84c87814, 0xa1f0ab72), new u64(0x8cc70208, 0x1a6439ec),
|
|
new u64(0x90befffa, 0x23631e28), new u64(0xa4506ceb, 0xde82bde9),
|
|
new u64(0xbef9a3f7, 0xb2c67915), new u64(0xc67178f2, 0xe372532b),
|
|
new u64(0xca273ece, 0xea26619c), new u64(0xd186b8c7, 0x21c0c207),
|
|
new u64(0xeada7dd6, 0xcde0eb1e), new u64(0xf57d4f7f, 0xee6ed178),
|
|
new u64(0x06f067aa, 0x72176fba), new u64(0x0a637dc5, 0xa2c898a6),
|
|
new u64(0x113f9804, 0xbef90dae), new u64(0x1b710b35, 0x131c471b),
|
|
new u64(0x28db77f5, 0x23047d84), new u64(0x32caab7b, 0x40c72493),
|
|
new u64(0x3c9ebe0a, 0x15c9bebc), new u64(0x431d67c4, 0x9c100d4c),
|
|
new u64(0x4cc5d4be, 0xcb3e42b6), new u64(0x597f299c, 0xfc657e2a),
|
|
new u64(0x5fcb6fab, 0x3ad6faec), new u64(0x6c44198c, 0x4a475817)
|
|
];
|
|
|
|
function crypto_hashblocks(x, m, n) {
|
|
var z = [], b = [], a = [], w = [], t, i, j;
|
|
|
|
for (i = 0; i < 8; i++) z[i] = a[i] = dl64(x, 8*i);
|
|
|
|
var pos = 0;
|
|
while (n >= 128) {
|
|
for (i = 0; i < 16; i++) w[i] = dl64(m, 8*i+pos);
|
|
for (i = 0; i < 80; i++) {
|
|
for (j = 0; j < 8; j++) b[j] = a[j];
|
|
t = add64(a[7], Sigma1(a[4]), Ch(a[4], a[5], a[6]), K[i], w[i%16]);
|
|
b[7] = add64(t, Sigma0(a[0]), Maj(a[0], a[1], a[2]));
|
|
b[3] = add64(b[3], t);
|
|
for (j = 0; j < 8; j++) a[(j+1)%8] = b[j];
|
|
if (i%16 === 15) {
|
|
for (j = 0; j < 16; j++) {
|
|
w[j] = add64(w[j], w[(j+9)%16], sigma0(w[(j+1)%16]), sigma1(w[(j+14)%16]));
|
|
}
|
|
}
|
|
}
|
|
|
|
for (i = 0; i < 8; i++) {
|
|
a[i] = add64(a[i], z[i]);
|
|
z[i] = a[i];
|
|
}
|
|
|
|
pos += 128;
|
|
n -= 128;
|
|
}
|
|
|
|
for (i = 0; i < 8; i++) ts64(x, 8*i, z[i]);
|
|
return n;
|
|
}
|
|
|
|
var iv = new Uint8Array([
|
|
0x6a,0x09,0xe6,0x67,0xf3,0xbc,0xc9,0x08,
|
|
0xbb,0x67,0xae,0x85,0x84,0xca,0xa7,0x3b,
|
|
0x3c,0x6e,0xf3,0x72,0xfe,0x94,0xf8,0x2b,
|
|
0xa5,0x4f,0xf5,0x3a,0x5f,0x1d,0x36,0xf1,
|
|
0x51,0x0e,0x52,0x7f,0xad,0xe6,0x82,0xd1,
|
|
0x9b,0x05,0x68,0x8c,0x2b,0x3e,0x6c,0x1f,
|
|
0x1f,0x83,0xd9,0xab,0xfb,0x41,0xbd,0x6b,
|
|
0x5b,0xe0,0xcd,0x19,0x13,0x7e,0x21,0x79
|
|
]);
|
|
|
|
function crypto_hash(out, m, n) {
|
|
var h = new Uint8Array(64), x = new Uint8Array(256);
|
|
var i, b = n;
|
|
|
|
for (i = 0; i < 64; i++) h[i] = iv[i];
|
|
|
|
crypto_hashblocks(h, m, n);
|
|
n %= 128;
|
|
|
|
for (i = 0; i < 256; i++) x[i] = 0;
|
|
for (i = 0; i < n; i++) x[i] = m[b-n+i];
|
|
x[n] = 128;
|
|
|
|
n = 256-128*(n<112?1:0);
|
|
x[n-9] = 0;
|
|
ts64(x, n-8, new u64((b / 0x20000000) | 0, b << 3));
|
|
crypto_hashblocks(h, x, n);
|
|
|
|
for (i = 0; i < 64; i++) out[i] = h[i];
|
|
|
|
return 0;
|
|
}
|
|
|
|
function add(p, q) {
|
|
var a = gf(), b = gf(), c = gf(),
|
|
d = gf(), e = gf(), f = gf(),
|
|
g = gf(), h = gf(), t = gf();
|
|
|
|
Z(a, p[1], p[0]);
|
|
Z(t, q[1], q[0]);
|
|
M(a, a, t);
|
|
A(b, p[0], p[1]);
|
|
A(t, q[0], q[1]);
|
|
M(b, b, t);
|
|
M(c, p[3], q[3]);
|
|
M(c, c, D2);
|
|
M(d, p[2], q[2]);
|
|
A(d, d, d);
|
|
Z(e, b, a);
|
|
Z(f, d, c);
|
|
A(g, d, c);
|
|
A(h, b, a);
|
|
|
|
M(p[0], e, f);
|
|
M(p[1], h, g);
|
|
M(p[2], g, f);
|
|
M(p[3], e, h);
|
|
}
|
|
|
|
function cswap(p, q, b) {
|
|
var i;
|
|
for (i = 0; i < 4; i++) {
|
|
sel25519(p[i], q[i], b);
|
|
}
|
|
}
|
|
|
|
function pack(r, p) {
|
|
var tx = gf(), ty = gf(), zi = gf();
|
|
inv25519(zi, p[2]);
|
|
M(tx, p[0], zi);
|
|
M(ty, p[1], zi);
|
|
pack25519(r, ty);
|
|
r[31] ^= par25519(tx) << 7;
|
|
}
|
|
|
|
function scalarmult(p, q, s) {
|
|
var b, i;
|
|
set25519(p[0], gf0);
|
|
set25519(p[1], gf1);
|
|
set25519(p[2], gf1);
|
|
set25519(p[3], gf0);
|
|
for (i = 255; i >= 0; --i) {
|
|
b = (s[(i/8)|0] >> (i&7)) & 1;
|
|
cswap(p, q, b);
|
|
add(q, p);
|
|
add(p, p);
|
|
cswap(p, q, b);
|
|
}
|
|
}
|
|
|
|
function scalarbase(p, s) {
|
|
var q = [gf(), gf(), gf(), gf()];
|
|
set25519(q[0], X);
|
|
set25519(q[1], Y);
|
|
set25519(q[2], gf1);
|
|
M(q[3], X, Y);
|
|
scalarmult(p, q, s);
|
|
}
|
|
|
|
function crypto_sign_keypair(pk, sk, seeded) {
|
|
var d = new Uint8Array(64);
|
|
var p = [gf(), gf(), gf(), gf()];
|
|
var i;
|
|
|
|
if (!seeded) randombytes(sk, 32);
|
|
crypto_hash(d, sk, 32);
|
|
d[0] &= 248;
|
|
d[31] &= 127;
|
|
d[31] |= 64;
|
|
|
|
scalarbase(p, d);
|
|
pack(pk, p);
|
|
|
|
for (i = 0; i < 32; i++) sk[i+32] = pk[i];
|
|
return 0;
|
|
}
|
|
|
|
var L = new Float64Array([0xed, 0xd3, 0xf5, 0x5c, 0x1a, 0x63, 0x12, 0x58, 0xd6, 0x9c, 0xf7, 0xa2, 0xde, 0xf9, 0xde, 0x14, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x10]);
|
|
|
|
function modL(r, x) {
|
|
var carry, i, j, k;
|
|
for (i = 63; i >= 32; --i) {
|
|
carry = 0;
|
|
for (j = i - 32, k = i - 12; j < k; ++j) {
|
|
x[j] += carry - 16 * x[i] * L[j - (i - 32)];
|
|
carry = (x[j] + 128) >> 8;
|
|
x[j] -= carry * 256;
|
|
}
|
|
x[j] += carry;
|
|
x[i] = 0;
|
|
}
|
|
carry = 0;
|
|
for (j = 0; j < 32; j++) {
|
|
x[j] += carry - (x[31] >> 4) * L[j];
|
|
carry = x[j] >> 8;
|
|
x[j] &= 255;
|
|
}
|
|
for (j = 0; j < 32; j++) x[j] -= carry * L[j];
|
|
for (i = 0; i < 32; i++) {
|
|
x[i+1] += x[i] >> 8;
|
|
r[i] = x[i] & 255;
|
|
}
|
|
}
|
|
|
|
function reduce(r) {
|
|
var x = new Float64Array(64), i;
|
|
for (i = 0; i < 64; i++) x[i] = r[i];
|
|
for (i = 0; i < 64; i++) r[i] = 0;
|
|
modL(r, x);
|
|
}
|
|
|
|
// Note: difference from C - smlen returned, not passed as argument.
|
|
function crypto_sign(sm, m, n, sk) {
|
|
var d = new Uint8Array(64), h = new Uint8Array(64), r = new Uint8Array(64);
|
|
var i, j, x = new Float64Array(64);
|
|
var p = [gf(), gf(), gf(), gf()];
|
|
|
|
crypto_hash(d, sk, 32);
|
|
d[0] &= 248;
|
|
d[31] &= 127;
|
|
d[31] |= 64;
|
|
|
|
var smlen = n + 64;
|
|
for (i = 0; i < n; i++) sm[64 + i] = m[i];
|
|
for (i = 0; i < 32; i++) sm[32 + i] = d[32 + i];
|
|
|
|
crypto_hash(r, sm.subarray(32), n+32);
|
|
reduce(r);
|
|
scalarbase(p, r);
|
|
pack(sm, p);
|
|
|
|
for (i = 32; i < 64; i++) sm[i] = sk[i];
|
|
crypto_hash(h, sm, n + 64);
|
|
reduce(h);
|
|
|
|
for (i = 0; i < 64; i++) x[i] = 0;
|
|
for (i = 0; i < 32; i++) x[i] = r[i];
|
|
for (i = 0; i < 32; i++) {
|
|
for (j = 0; j < 32; j++) {
|
|
x[i+j] += h[i] * d[j];
|
|
}
|
|
}
|
|
|
|
modL(sm.subarray(32), x);
|
|
return smlen;
|
|
}
|
|
|
|
function unpackneg(r, p) {
|
|
var t = gf(), chk = gf(), num = gf(),
|
|
den = gf(), den2 = gf(), den4 = gf(),
|
|
den6 = gf();
|
|
|
|
set25519(r[2], gf1);
|
|
unpack25519(r[1], p);
|
|
S(num, r[1]);
|
|
M(den, num, D);
|
|
Z(num, num, r[2]);
|
|
A(den, r[2], den);
|
|
|
|
S(den2, den);
|
|
S(den4, den2);
|
|
M(den6, den4, den2);
|
|
M(t, den6, num);
|
|
M(t, t, den);
|
|
|
|
pow2523(t, t);
|
|
M(t, t, num);
|
|
M(t, t, den);
|
|
M(t, t, den);
|
|
M(r[0], t, den);
|
|
|
|
S(chk, r[0]);
|
|
M(chk, chk, den);
|
|
if (neq25519(chk, num)) M(r[0], r[0], I);
|
|
|
|
S(chk, r[0]);
|
|
M(chk, chk, den);
|
|
if (neq25519(chk, num)) return -1;
|
|
|
|
if (par25519(r[0]) === (p[31]>>7)) Z(r[0], gf0, r[0]);
|
|
|
|
M(r[3], r[0], r[1]);
|
|
return 0;
|
|
}
|
|
|
|
function crypto_sign_open(m, sm, n, pk) {
|
|
var i, mlen;
|
|
var t = new Uint8Array(32), h = new Uint8Array(64);
|
|
var p = [gf(), gf(), gf(), gf()],
|
|
q = [gf(), gf(), gf(), gf()];
|
|
|
|
mlen = -1;
|
|
if (n < 64) return -1;
|
|
|
|
if (unpackneg(q, pk)) return -1;
|
|
|
|
for (i = 0; i < n; i++) m[i] = sm[i];
|
|
for (i = 0; i < 32; i++) m[i+32] = pk[i];
|
|
crypto_hash(h, m, n);
|
|
reduce(h);
|
|
scalarmult(p, q, h);
|
|
|
|
scalarbase(q, sm.subarray(32));
|
|
add(p, q);
|
|
pack(t, p);
|
|
|
|
n -= 64;
|
|
if (crypto_verify_32(sm, 0, t, 0)) {
|
|
for (i = 0; i < n; i++) m[i] = 0;
|
|
return -1;
|
|
}
|
|
|
|
for (i = 0; i < n; i++) m[i] = sm[i + 64];
|
|
mlen = n;
|
|
return mlen;
|
|
}
|
|
|
|
var crypto_secretbox_KEYBYTES = 32,
|
|
crypto_secretbox_NONCEBYTES = 24,
|
|
crypto_secretbox_ZEROBYTES = 32,
|
|
crypto_secretbox_BOXZEROBYTES = 16,
|
|
crypto_scalarmult_BYTES = 32,
|
|
crypto_scalarmult_SCALARBYTES = 32,
|
|
crypto_box_PUBLICKEYBYTES = 32,
|
|
crypto_box_SECRETKEYBYTES = 32,
|
|
crypto_box_BEFORENMBYTES = 32,
|
|
crypto_box_NONCEBYTES = crypto_secretbox_NONCEBYTES,
|
|
crypto_box_ZEROBYTES = crypto_secretbox_ZEROBYTES,
|
|
crypto_box_BOXZEROBYTES = crypto_secretbox_BOXZEROBYTES,
|
|
crypto_sign_BYTES = 64,
|
|
crypto_sign_PUBLICKEYBYTES = 32,
|
|
crypto_sign_SECRETKEYBYTES = 64,
|
|
crypto_sign_SEEDBYTES = 32,
|
|
crypto_hash_BYTES = 64;
|
|
|
|
nacl.lowlevel = {
|
|
crypto_core_hsalsa20: crypto_core_hsalsa20,
|
|
crypto_stream_xor: crypto_stream_xor,
|
|
crypto_stream: crypto_stream,
|
|
crypto_stream_salsa20_xor: crypto_stream_salsa20_xor,
|
|
crypto_stream_salsa20: crypto_stream_salsa20,
|
|
crypto_onetimeauth: crypto_onetimeauth,
|
|
crypto_onetimeauth_verify: crypto_onetimeauth_verify,
|
|
crypto_verify_16: crypto_verify_16,
|
|
crypto_verify_32: crypto_verify_32,
|
|
crypto_secretbox: crypto_secretbox,
|
|
crypto_secretbox_open: crypto_secretbox_open,
|
|
crypto_scalarmult: crypto_scalarmult,
|
|
crypto_scalarmult_base: crypto_scalarmult_base,
|
|
crypto_box_beforenm: crypto_box_beforenm,
|
|
crypto_box_afternm: crypto_box_afternm,
|
|
crypto_box: crypto_box,
|
|
crypto_box_open: crypto_box_open,
|
|
crypto_box_keypair: crypto_box_keypair,
|
|
crypto_hash: crypto_hash,
|
|
crypto_sign: crypto_sign,
|
|
crypto_sign_keypair: crypto_sign_keypair,
|
|
crypto_sign_open: crypto_sign_open,
|
|
|
|
crypto_secretbox_KEYBYTES: crypto_secretbox_KEYBYTES,
|
|
crypto_secretbox_NONCEBYTES: crypto_secretbox_NONCEBYTES,
|
|
crypto_secretbox_ZEROBYTES: crypto_secretbox_ZEROBYTES,
|
|
crypto_secretbox_BOXZEROBYTES: crypto_secretbox_BOXZEROBYTES,
|
|
crypto_scalarmult_BYTES: crypto_scalarmult_BYTES,
|
|
crypto_scalarmult_SCALARBYTES: crypto_scalarmult_SCALARBYTES,
|
|
crypto_box_PUBLICKEYBYTES: crypto_box_PUBLICKEYBYTES,
|
|
crypto_box_SECRETKEYBYTES: crypto_box_SECRETKEYBYTES,
|
|
crypto_box_BEFORENMBYTES: crypto_box_BEFORENMBYTES,
|
|
crypto_box_NONCEBYTES: crypto_box_NONCEBYTES,
|
|
crypto_box_ZEROBYTES: crypto_box_ZEROBYTES,
|
|
crypto_box_BOXZEROBYTES: crypto_box_BOXZEROBYTES,
|
|
crypto_sign_BYTES: crypto_sign_BYTES,
|
|
crypto_sign_PUBLICKEYBYTES: crypto_sign_PUBLICKEYBYTES,
|
|
crypto_sign_SECRETKEYBYTES: crypto_sign_SECRETKEYBYTES,
|
|
crypto_sign_SEEDBYTES: crypto_sign_SEEDBYTES,
|
|
crypto_hash_BYTES: crypto_hash_BYTES
|
|
};
|
|
|
|
/* High-level API */
|
|
|
|
function checkLengths(k, n) {
|
|
if (k.length !== crypto_secretbox_KEYBYTES) throw new Error('bad key size');
|
|
if (n.length !== crypto_secretbox_NONCEBYTES) throw new Error('bad nonce size');
|
|
}
|
|
|
|
function checkBoxLengths(pk, sk) {
|
|
if (pk.length !== crypto_box_PUBLICKEYBYTES) throw new Error('bad public key size');
|
|
if (sk.length !== crypto_box_SECRETKEYBYTES) throw new Error('bad secret key size');
|
|
}
|
|
|
|
function checkArrayTypes() {
|
|
var t, i;
|
|
for (i = 0; i < arguments.length; i++) {
|
|
if ((t = Object.prototype.toString.call(arguments[i])) !== '[object Uint8Array]')
|
|
throw new TypeError('unexpected type ' + t + ', use Uint8Array');
|
|
}
|
|
}
|
|
|
|
function cleanup(arr) {
|
|
for (var i = 0; i < arr.length; i++) arr[i] = 0;
|
|
}
|
|
|
|
// TODO: Completely remove this in v0.15.
|
|
if (!nacl.util) {
|
|
nacl.util = {};
|
|
nacl.util.decodeUTF8 = nacl.util.encodeUTF8 = nacl.util.encodeBase64 = nacl.util.decodeBase64 = function() {
|
|
throw new Error('nacl.util moved into separate package: https://github.com/dchest/tweetnacl-util-js');
|
|
};
|
|
}
|
|
|
|
nacl.randomBytes = function(n) {
|
|
var b = new Uint8Array(n);
|
|
randombytes(b, n);
|
|
return b;
|
|
};
|
|
|
|
nacl.secretbox = function(msg, nonce, key) {
|
|
checkArrayTypes(msg, nonce, key);
|
|
checkLengths(key, nonce);
|
|
var m = new Uint8Array(crypto_secretbox_ZEROBYTES + msg.length);
|
|
var c = new Uint8Array(m.length);
|
|
for (var i = 0; i < msg.length; i++) m[i+crypto_secretbox_ZEROBYTES] = msg[i];
|
|
crypto_secretbox(c, m, m.length, nonce, key);
|
|
return c.subarray(crypto_secretbox_BOXZEROBYTES);
|
|
};
|
|
|
|
nacl.secretbox.open = function(box, nonce, key) {
|
|
checkArrayTypes(box, nonce, key);
|
|
checkLengths(key, nonce);
|
|
var c = new Uint8Array(crypto_secretbox_BOXZEROBYTES + box.length);
|
|
var m = new Uint8Array(c.length);
|
|
for (var i = 0; i < box.length; i++) c[i+crypto_secretbox_BOXZEROBYTES] = box[i];
|
|
if (c.length < 32) return false;
|
|
if (crypto_secretbox_open(m, c, c.length, nonce, key) !== 0) return false;
|
|
return m.subarray(crypto_secretbox_ZEROBYTES);
|
|
};
|
|
|
|
nacl.secretbox.keyLength = crypto_secretbox_KEYBYTES;
|
|
nacl.secretbox.nonceLength = crypto_secretbox_NONCEBYTES;
|
|
nacl.secretbox.overheadLength = crypto_secretbox_BOXZEROBYTES;
|
|
|
|
nacl.scalarMult = function(n, p) {
|
|
checkArrayTypes(n, p);
|
|
if (n.length !== crypto_scalarmult_SCALARBYTES) throw new Error('bad n size');
|
|
if (p.length !== crypto_scalarmult_BYTES) throw new Error('bad p size');
|
|
var q = new Uint8Array(crypto_scalarmult_BYTES);
|
|
crypto_scalarmult(q, n, p);
|
|
return q;
|
|
};
|
|
|
|
nacl.scalarMult.base = function(n) {
|
|
checkArrayTypes(n);
|
|
if (n.length !== crypto_scalarmult_SCALARBYTES) throw new Error('bad n size');
|
|
var q = new Uint8Array(crypto_scalarmult_BYTES);
|
|
crypto_scalarmult_base(q, n);
|
|
return q;
|
|
};
|
|
|
|
nacl.scalarMult.scalarLength = crypto_scalarmult_SCALARBYTES;
|
|
nacl.scalarMult.groupElementLength = crypto_scalarmult_BYTES;
|
|
|
|
nacl.box = function(msg, nonce, publicKey, secretKey) {
|
|
var k = nacl.box.before(publicKey, secretKey);
|
|
return nacl.secretbox(msg, nonce, k);
|
|
};
|
|
|
|
nacl.box.before = function(publicKey, secretKey) {
|
|
checkArrayTypes(publicKey, secretKey);
|
|
checkBoxLengths(publicKey, secretKey);
|
|
var k = new Uint8Array(crypto_box_BEFORENMBYTES);
|
|
crypto_box_beforenm(k, publicKey, secretKey);
|
|
return k;
|
|
};
|
|
|
|
nacl.box.after = nacl.secretbox;
|
|
|
|
nacl.box.open = function(msg, nonce, publicKey, secretKey) {
|
|
var k = nacl.box.before(publicKey, secretKey);
|
|
return nacl.secretbox.open(msg, nonce, k);
|
|
};
|
|
|
|
nacl.box.open.after = nacl.secretbox.open;
|
|
|
|
nacl.box.keyPair = function() {
|
|
var pk = new Uint8Array(crypto_box_PUBLICKEYBYTES);
|
|
var sk = new Uint8Array(crypto_box_SECRETKEYBYTES);
|
|
crypto_box_keypair(pk, sk);
|
|
return {publicKey: pk, secretKey: sk};
|
|
};
|
|
|
|
nacl.box.keyPair.fromSecretKey = function(secretKey) {
|
|
checkArrayTypes(secretKey);
|
|
if (secretKey.length !== crypto_box_SECRETKEYBYTES)
|
|
throw new Error('bad secret key size');
|
|
var pk = new Uint8Array(crypto_box_PUBLICKEYBYTES);
|
|
crypto_scalarmult_base(pk, secretKey);
|
|
return {publicKey: pk, secretKey: new Uint8Array(secretKey)};
|
|
};
|
|
|
|
nacl.box.publicKeyLength = crypto_box_PUBLICKEYBYTES;
|
|
nacl.box.secretKeyLength = crypto_box_SECRETKEYBYTES;
|
|
nacl.box.sharedKeyLength = crypto_box_BEFORENMBYTES;
|
|
nacl.box.nonceLength = crypto_box_NONCEBYTES;
|
|
nacl.box.overheadLength = nacl.secretbox.overheadLength;
|
|
|
|
nacl.sign = function(msg, secretKey) {
|
|
checkArrayTypes(msg, secretKey);
|
|
if (secretKey.length !== crypto_sign_SECRETKEYBYTES)
|
|
throw new Error('bad secret key size');
|
|
var signedMsg = new Uint8Array(crypto_sign_BYTES+msg.length);
|
|
crypto_sign(signedMsg, msg, msg.length, secretKey);
|
|
return signedMsg;
|
|
};
|
|
|
|
nacl.sign.open = function(signedMsg, publicKey) {
|
|
if (arguments.length !== 2)
|
|
throw new Error('nacl.sign.open accepts 2 arguments; did you mean to use nacl.sign.detached.verify?');
|
|
checkArrayTypes(signedMsg, publicKey);
|
|
if (publicKey.length !== crypto_sign_PUBLICKEYBYTES)
|
|
throw new Error('bad public key size');
|
|
var tmp = new Uint8Array(signedMsg.length);
|
|
var mlen = crypto_sign_open(tmp, signedMsg, signedMsg.length, publicKey);
|
|
if (mlen < 0) return null;
|
|
var m = new Uint8Array(mlen);
|
|
for (var i = 0; i < m.length; i++) m[i] = tmp[i];
|
|
return m;
|
|
};
|
|
|
|
nacl.sign.detached = function(msg, secretKey) {
|
|
var signedMsg = nacl.sign(msg, secretKey);
|
|
var sig = new Uint8Array(crypto_sign_BYTES);
|
|
for (var i = 0; i < sig.length; i++) sig[i] = signedMsg[i];
|
|
return sig;
|
|
};
|
|
|
|
nacl.sign.detached.verify = function(msg, sig, publicKey) {
|
|
checkArrayTypes(msg, sig, publicKey);
|
|
if (sig.length !== crypto_sign_BYTES)
|
|
throw new Error('bad signature size');
|
|
if (publicKey.length !== crypto_sign_PUBLICKEYBYTES)
|
|
throw new Error('bad public key size');
|
|
var sm = new Uint8Array(crypto_sign_BYTES + msg.length);
|
|
var m = new Uint8Array(crypto_sign_BYTES + msg.length);
|
|
var i;
|
|
for (i = 0; i < crypto_sign_BYTES; i++) sm[i] = sig[i];
|
|
for (i = 0; i < msg.length; i++) sm[i+crypto_sign_BYTES] = msg[i];
|
|
return (crypto_sign_open(m, sm, sm.length, publicKey) >= 0);
|
|
};
|
|
|
|
nacl.sign.keyPair = function() {
|
|
var pk = new Uint8Array(crypto_sign_PUBLICKEYBYTES);
|
|
var sk = new Uint8Array(crypto_sign_SECRETKEYBYTES);
|
|
crypto_sign_keypair(pk, sk);
|
|
return {publicKey: pk, secretKey: sk};
|
|
};
|
|
|
|
nacl.sign.keyPair.fromSecretKey = function(secretKey) {
|
|
checkArrayTypes(secretKey);
|
|
if (secretKey.length !== crypto_sign_SECRETKEYBYTES)
|
|
throw new Error('bad secret key size');
|
|
var pk = new Uint8Array(crypto_sign_PUBLICKEYBYTES);
|
|
for (var i = 0; i < pk.length; i++) pk[i] = secretKey[32+i];
|
|
return {publicKey: pk, secretKey: new Uint8Array(secretKey)};
|
|
};
|
|
|
|
nacl.sign.keyPair.fromSeed = function(seed) {
|
|
checkArrayTypes(seed);
|
|
if (seed.length !== crypto_sign_SEEDBYTES)
|
|
throw new Error('bad seed size');
|
|
var pk = new Uint8Array(crypto_sign_PUBLICKEYBYTES);
|
|
var sk = new Uint8Array(crypto_sign_SECRETKEYBYTES);
|
|
for (var i = 0; i < 32; i++) sk[i] = seed[i];
|
|
crypto_sign_keypair(pk, sk, true);
|
|
return {publicKey: pk, secretKey: sk};
|
|
};
|
|
|
|
nacl.sign.publicKeyLength = crypto_sign_PUBLICKEYBYTES;
|
|
nacl.sign.secretKeyLength = crypto_sign_SECRETKEYBYTES;
|
|
nacl.sign.seedLength = crypto_sign_SEEDBYTES;
|
|
nacl.sign.signatureLength = crypto_sign_BYTES;
|
|
|
|
nacl.hash = function(msg) {
|
|
checkArrayTypes(msg);
|
|
var h = new Uint8Array(crypto_hash_BYTES);
|
|
crypto_hash(h, msg, msg.length);
|
|
return h;
|
|
};
|
|
|
|
nacl.hash.hashLength = crypto_hash_BYTES;
|
|
|
|
nacl.verify = function(x, y) {
|
|
checkArrayTypes(x, y);
|
|
// Zero length arguments are considered not equal.
|
|
if (x.length === 0 || y.length === 0) return false;
|
|
if (x.length !== y.length) return false;
|
|
return (vn(x, 0, y, 0, x.length) === 0) ? true : false;
|
|
};
|
|
|
|
nacl.setPRNG = function(fn) {
|
|
randombytes = fn;
|
|
};
|
|
|
|
(function() {
|
|
// Initialize PRNG if environment provides CSPRNG.
|
|
// If not, methods calling randombytes will throw.
|
|
var crypto = typeof self !== 'undefined' ? (self.crypto || self.msCrypto) : null;
|
|
if (crypto && crypto.getRandomValues) {
|
|
// Browsers.
|
|
var QUOTA = 65536;
|
|
nacl.setPRNG(function(x, n) {
|
|
var i, v = new Uint8Array(n);
|
|
for (i = 0; i < n; i += QUOTA) {
|
|
crypto.getRandomValues(v.subarray(i, i + Math.min(n - i, QUOTA)));
|
|
}
|
|
for (i = 0; i < n; i++) x[i] = v[i];
|
|
cleanup(v);
|
|
});
|
|
} else if (typeof require !== 'undefined') {
|
|
// Node.js.
|
|
crypto = require('crypto');
|
|
if (crypto && crypto.randomBytes) {
|
|
nacl.setPRNG(function(x, n) {
|
|
var i, v = crypto.randomBytes(n);
|
|
for (i = 0; i < n; i++) x[i] = v[i];
|
|
cleanup(v);
|
|
});
|
|
}
|
|
}
|
|
})();
|
|
|
|
})(typeof module !== 'undefined' && module.exports ? module.exports : (self.nacl = self.nacl || {}));
|