From afec9fbbbe36dcb4102acd0754756d36b31155bd Mon Sep 17 00:00:00 2001 From: Chris Duncan Date: Fri, 29 Nov 2024 21:38:10 -0800 Subject: [PATCH] Backup working copy of nano-nacl prior to optimization efforts. --- src/lib/workers/nano-nacl.ts.bkp | 869 +++++++++++++++++++++++++++++++ 1 file changed, 869 insertions(+) create mode 100644 src/lib/workers/nano-nacl.ts.bkp diff --git a/src/lib/workers/nano-nacl.ts.bkp b/src/lib/workers/nano-nacl.ts.bkp new file mode 100644 index 0000000..9d011de --- /dev/null +++ b/src/lib/workers/nano-nacl.ts.bkp @@ -0,0 +1,869 @@ +// SPDX-FileCopyrightText: 2024 Chris Duncan +// SPDX-License-Identifier: GPL-3.0-or-later +//@ts-nocheck +'use strict' + +// Ported in 2014 by Dmitry Chestnykh and Devi Mandiri. +// Public domain. +// +// Implementation derived from TweetNaCl version 20140427. +// See for details: http://tweetnacl.cr.yp.to/ +// +// Modified in 2024 by Chris Duncan to hash secret key to public key using +// BLAKE2b instead of SHA-512 as specified in the documentation for Nano +// cryptocurrency. +// See for details: https://docs.nano.org/integration-guides/the-basics/ +// Original source commit: https://github.com/dchest/tweetnacl-js/blob/71df1d6a1d78236ca3e9f6c788786e21f5a651a6/nacl-fast.js + +import type { Blake2b } from '../blake2b.js' + +async function NanoNaCl (Blake2b: Blake2b) { + /** + * Listens for messages from a calling function. + */ + addEventListener('message', (message) => { + const { privateKey, index } = message.data ?? message + const { publicKey } = keyPair.fromSeed(privateKey) + postMessage({ publicKey, privateKey, index }) + }) + + var gf = function (init?: any) { + var i, r = new Float64Array(16) + if (init) for (i = 0; i < init.length; i++) r[i] = init[i] + return r + } + + var gf0 = gf(), + gf1 = gf([1]), + D = gf([0x78a3, 0x1359, 0x4dca, 0x75eb, 0xd8ab, 0x4141, 0x0a4d, 0x0070, 0xe898, 0x7779, 0x4079, 0x8cc7, 0xfe73, 0x2b6f, 0x6cee, 0x5203]), + D2 = gf([0xf159, 0x26b2, 0x9b94, 0xebd6, 0xb156, 0x8283, 0x149a, 0x00e0, 0xd130, 0xeef3, 0x80f2, 0x198e, 0xfce7, 0x56df, 0xd9dc, 0x2406]), + X = gf([0xd51a, 0x8f25, 0x2d60, 0xc956, 0xa7b2, 0x9525, 0xc760, 0x692c, 0xdc5c, 0xfdd6, 0xe231, 0xc0a4, 0x53fe, 0xcd6e, 0x36d3, 0x2169]), + Y = gf([0x6658, 0x6666, 0x6666, 0x6666, 0x6666, 0x6666, 0x6666, 0x6666, 0x6666, 0x6666, 0x6666, 0x6666, 0x6666, 0x6666, 0x6666, 0x6666]), + I = gf([0xa0b0, 0x4a0e, 0x1b27, 0xc4ee, 0xe478, 0xad2f, 0x1806, 0x2f43, 0xd7a7, 0x3dfb, 0x0099, 0x2b4d, 0xdf0b, 0x4fc1, 0x2480, 0x2b83]) + + function vn (x, xi, y, yi, n) { + var i, d = 0 + for (i = 0; i < n; i++) d |= x[xi + i] ^ y[yi + i] + return (1 & ((d - 1) >>> 8)) - 1 + } + + function crypto_verify_32 (x, xi, y, yi) { + return vn(x, xi, y, yi, 32) + } + + function set25519 (r, a) { + var i + for (i = 0; i < 16; i++) r[i] = a[i] | 0 + } + + function car25519 (o) { + var i, v, c = 1 + for (i = 0; i < 16; i++) { + v = o[i] + c + 65535 + c = Math.floor(v / 65536) + o[i] = v - c * 65536 + } + o[0] += c - 1 + 37 * (c - 1) + } + + function sel25519 (p, q, b) { + var t, c = ~(b - 1) + for (var i = 0; i < 16; i++) { + t = c & (p[i] ^ q[i]) + p[i] ^= t + q[i] ^= t + } + } + + function pack25519 (o, n) { + var i, j, b + var m = gf(), t = gf() + for (i = 0; i < 16; i++) t[i] = n[i] + car25519(t) + car25519(t) + car25519(t) + for (j = 0; j < 2; j++) { + m[0] = t[0] - 0xffed + for (i = 1; i < 15; i++) { + m[i] = t[i] - 0xffff - ((m[i - 1] >> 16) & 1) + m[i - 1] &= 0xffff + } + m[15] = t[15] - 0x7fff - ((m[14] >> 16) & 1) + b = (m[15] >> 16) & 1 + m[14] &= 0xffff + sel25519(t, m, 1 - b) + } + for (i = 0; i < 16; i++) { + o[2 * i] = t[i] & 0xff + o[2 * i + 1] = t[i] >> 8 + } + } + + function neq25519 (a, b) { + var c = new Uint8Array(32), d = new Uint8Array(32) + pack25519(c, a) + pack25519(d, b) + return crypto_verify_32(c, 0, d, 0) + } + + function par25519 (a) { + var d = new Uint8Array(32) + pack25519(d, a) + return d[0] & 1 + } + + function unpack25519 (o, n) { + var i + for (i = 0; i < 16; i++) o[i] = n[2 * i] + (n[2 * i + 1] << 8) + o[15] &= 0x7fff + } + + function A (o, a, b) { + for (var i = 0; i < 16; i++) o[i] = a[i] + b[i] + } + + function Z (o, a, b) { + for (var i = 0; i < 16; i++) o[i] = a[i] - b[i] + } + + function M (o, a, b) { + var v, c, + t0 = 0, t1 = 0, t2 = 0, t3 = 0, t4 = 0, t5 = 0, t6 = 0, t7 = 0, + t8 = 0, t9 = 0, t10 = 0, t11 = 0, t12 = 0, t13 = 0, t14 = 0, t15 = 0, + t16 = 0, t17 = 0, t18 = 0, t19 = 0, t20 = 0, t21 = 0, t22 = 0, t23 = 0, + t24 = 0, t25 = 0, t26 = 0, t27 = 0, t28 = 0, t29 = 0, t30 = 0, + b0 = b[0], + b1 = b[1], + b2 = b[2], + b3 = b[3], + b4 = b[4], + b5 = b[5], + b6 = b[6], + b7 = b[7], + b8 = b[8], + b9 = b[9], + b10 = b[10], + b11 = b[11], + b12 = b[12], + b13 = b[13], + b14 = b[14], + b15 = b[15] + + v = a[0] + t0 += v * b0 + t1 += v * b1 + t2 += v * b2 + t3 += v * b3 + t4 += v * b4 + t5 += v * b5 + t6 += v * b6 + t7 += v * b7 + t8 += v * b8 + t9 += v * b9 + t10 += v * b10 + t11 += v * b11 + t12 += v * b12 + t13 += v * b13 + t14 += v * b14 + t15 += v * b15 + v = a[1] + t1 += v * b0 + t2 += v * b1 + t3 += v * b2 + t4 += v * b3 + t5 += v * b4 + t6 += v * b5 + t7 += v * b6 + t8 += v * b7 + t9 += v * b8 + t10 += v * b9 + t11 += v * b10 + t12 += v * b11 + t13 += v * b12 + t14 += v * b13 + t15 += v * b14 + t16 += v * b15 + v = a[2] + t2 += v * b0 + t3 += v * b1 + t4 += v * b2 + t5 += v * b3 + t6 += v * b4 + t7 += v * b5 + t8 += v * b6 + t9 += v * b7 + t10 += v * b8 + t11 += v * b9 + t12 += v * b10 + t13 += v * b11 + t14 += v * b12 + t15 += v * b13 + t16 += v * b14 + t17 += v * b15 + v = a[3] + t3 += v * b0 + t4 += v * b1 + t5 += v * b2 + t6 += v * b3 + t7 += v * b4 + t8 += v * b5 + t9 += v * b6 + t10 += v * b7 + t11 += v * b8 + t12 += v * b9 + t13 += v * b10 + t14 += v * b11 + t15 += v * b12 + t16 += v * b13 + t17 += v * b14 + t18 += v * b15 + v = a[4] + t4 += v * b0 + t5 += v * b1 + t6 += v * b2 + t7 += v * b3 + t8 += v * b4 + t9 += v * b5 + t10 += v * b6 + t11 += v * b7 + t12 += v * b8 + t13 += v * b9 + t14 += v * b10 + t15 += v * b11 + t16 += v * b12 + t17 += v * b13 + t18 += v * b14 + t19 += v * b15 + v = a[5] + t5 += v * b0 + t6 += v * b1 + t7 += v * b2 + t8 += v * b3 + t9 += v * b4 + t10 += v * b5 + t11 += v * b6 + t12 += v * b7 + t13 += v * b8 + t14 += v * b9 + t15 += v * b10 + t16 += v * b11 + t17 += v * b12 + t18 += v * b13 + t19 += v * b14 + t20 += v * b15 + v = a[6] + t6 += v * b0 + t7 += v * b1 + t8 += v * b2 + t9 += v * b3 + t10 += v * b4 + t11 += v * b5 + t12 += v * b6 + t13 += v * b7 + t14 += v * b8 + t15 += v * b9 + t16 += v * b10 + t17 += v * b11 + t18 += v * b12 + t19 += v * b13 + t20 += v * b14 + t21 += v * b15 + v = a[7] + t7 += v * b0 + t8 += v * b1 + t9 += v * b2 + t10 += v * b3 + t11 += v * b4 + t12 += v * b5 + t13 += v * b6 + t14 += v * b7 + t15 += v * b8 + t16 += v * b9 + t17 += v * b10 + t18 += v * b11 + t19 += v * b12 + t20 += v * b13 + t21 += v * b14 + t22 += v * b15 + v = a[8] + t8 += v * b0 + t9 += v * b1 + t10 += v * b2 + t11 += v * b3 + t12 += v * b4 + t13 += v * b5 + t14 += v * b6 + t15 += v * b7 + t16 += v * b8 + t17 += v * b9 + t18 += v * b10 + t19 += v * b11 + t20 += v * b12 + t21 += v * b13 + t22 += v * b14 + t23 += v * b15 + v = a[9] + t9 += v * b0 + t10 += v * b1 + t11 += v * b2 + t12 += v * b3 + t13 += v * b4 + t14 += v * b5 + t15 += v * b6 + t16 += v * b7 + t17 += v * b8 + t18 += v * b9 + t19 += v * b10 + t20 += v * b11 + t21 += v * b12 + t22 += v * b13 + t23 += v * b14 + t24 += v * b15 + v = a[10] + t10 += v * b0 + t11 += v * b1 + t12 += v * b2 + t13 += v * b3 + t14 += v * b4 + t15 += v * b5 + t16 += v * b6 + t17 += v * b7 + t18 += v * b8 + t19 += v * b9 + t20 += v * b10 + t21 += v * b11 + t22 += v * b12 + t23 += v * b13 + t24 += v * b14 + t25 += v * b15 + v = a[11] + t11 += v * b0 + t12 += v * b1 + t13 += v * b2 + t14 += v * b3 + t15 += v * b4 + t16 += v * b5 + t17 += v * b6 + t18 += v * b7 + t19 += v * b8 + t20 += v * b9 + t21 += v * b10 + t22 += v * b11 + t23 += v * b12 + t24 += v * b13 + t25 += v * b14 + t26 += v * b15 + v = a[12] + t12 += v * b0 + t13 += v * b1 + t14 += v * b2 + t15 += v * b3 + t16 += v * b4 + t17 += v * b5 + t18 += v * b6 + t19 += v * b7 + t20 += v * b8 + t21 += v * b9 + t22 += v * b10 + t23 += v * b11 + t24 += v * b12 + t25 += v * b13 + t26 += v * b14 + t27 += v * b15 + v = a[13] + t13 += v * b0 + t14 += v * b1 + t15 += v * b2 + t16 += v * b3 + t17 += v * b4 + t18 += v * b5 + t19 += v * b6 + t20 += v * b7 + t21 += v * b8 + t22 += v * b9 + t23 += v * b10 + t24 += v * b11 + t25 += v * b12 + t26 += v * b13 + t27 += v * b14 + t28 += v * b15 + v = a[14] + t14 += v * b0 + t15 += v * b1 + t16 += v * b2 + t17 += v * b3 + t18 += v * b4 + t19 += v * b5 + t20 += v * b6 + t21 += v * b7 + t22 += v * b8 + t23 += v * b9 + t24 += v * b10 + t25 += v * b11 + t26 += v * b12 + t27 += v * b13 + t28 += v * b14 + t29 += v * b15 + v = a[15] + t15 += v * b0 + t16 += v * b1 + t17 += v * b2 + t18 += v * b3 + t19 += v * b4 + t20 += v * b5 + t21 += v * b6 + t22 += v * b7 + t23 += v * b8 + t24 += v * b9 + t25 += v * b10 + t26 += v * b11 + t27 += v * b12 + t28 += v * b13 + t29 += v * b14 + t30 += v * b15 + + t0 += 38 * t16 + t1 += 38 * t17 + t2 += 38 * t18 + t3 += 38 * t19 + t4 += 38 * t20 + t5 += 38 * t21 + t6 += 38 * t22 + t7 += 38 * t23 + t8 += 38 * t24 + t9 += 38 * t25 + t10 += 38 * t26 + t11 += 38 * t27 + t12 += 38 * t28 + t13 += 38 * t29 + t14 += 38 * t30 + // t15 left as is + + // first car + c = 1 + v = t0 + c + 65535; c = Math.floor(v / 65536); t0 = v - c * 65536 + v = t1 + c + 65535; c = Math.floor(v / 65536); t1 = v - c * 65536 + v = t2 + c + 65535; c = Math.floor(v / 65536); t2 = v - c * 65536 + v = t3 + c + 65535; c = Math.floor(v / 65536); t3 = v - c * 65536 + v = t4 + c + 65535; c = Math.floor(v / 65536); t4 = v - c * 65536 + v = t5 + c + 65535; c = Math.floor(v / 65536); t5 = v - c * 65536 + v = t6 + c + 65535; c = Math.floor(v / 65536); t6 = v - c * 65536 + v = t7 + c + 65535; c = Math.floor(v / 65536); t7 = v - c * 65536 + v = t8 + c + 65535; c = Math.floor(v / 65536); t8 = v - c * 65536 + v = t9 + c + 65535; c = Math.floor(v / 65536); t9 = v - c * 65536 + v = t10 + c + 65535; c = Math.floor(v / 65536); t10 = v - c * 65536 + v = t11 + c + 65535; c = Math.floor(v / 65536); t11 = v - c * 65536 + v = t12 + c + 65535; c = Math.floor(v / 65536); t12 = v - c * 65536 + v = t13 + c + 65535; c = Math.floor(v / 65536); t13 = v - c * 65536 + v = t14 + c + 65535; c = Math.floor(v / 65536); t14 = v - c * 65536 + v = t15 + c + 65535; c = Math.floor(v / 65536); t15 = v - c * 65536 + t0 += c - 1 + 37 * (c - 1) + + // second car + c = 1 + v = t0 + c + 65535; c = Math.floor(v / 65536); t0 = v - c * 65536 + v = t1 + c + 65535; c = Math.floor(v / 65536); t1 = v - c * 65536 + v = t2 + c + 65535; c = Math.floor(v / 65536); t2 = v - c * 65536 + v = t3 + c + 65535; c = Math.floor(v / 65536); t3 = v - c * 65536 + v = t4 + c + 65535; c = Math.floor(v / 65536); t4 = v - c * 65536 + v = t5 + c + 65535; c = Math.floor(v / 65536); t5 = v - c * 65536 + v = t6 + c + 65535; c = Math.floor(v / 65536); t6 = v - c * 65536 + v = t7 + c + 65535; c = Math.floor(v / 65536); t7 = v - c * 65536 + v = t8 + c + 65535; c = Math.floor(v / 65536); t8 = v - c * 65536 + v = t9 + c + 65535; c = Math.floor(v / 65536); t9 = v - c * 65536 + v = t10 + c + 65535; c = Math.floor(v / 65536); t10 = v - c * 65536 + v = t11 + c + 65535; c = Math.floor(v / 65536); t11 = v - c * 65536 + v = t12 + c + 65535; c = Math.floor(v / 65536); t12 = v - c * 65536 + v = t13 + c + 65535; c = Math.floor(v / 65536); t13 = v - c * 65536 + v = t14 + c + 65535; c = Math.floor(v / 65536); t14 = v - c * 65536 + v = t15 + c + 65535; c = Math.floor(v / 65536); t15 = v - c * 65536 + t0 += c - 1 + 37 * (c - 1) + + o[0] = t0 + o[1] = t1 + o[2] = t2 + o[3] = t3 + o[4] = t4 + o[5] = t5 + o[6] = t6 + o[7] = t7 + o[8] = t8 + o[9] = t9 + o[10] = t10 + o[11] = t11 + o[12] = t12 + o[13] = t13 + o[14] = t14 + o[15] = t15 + } + + function S (o, a) { + M(o, a, a) + } + + function inv25519 (o, i) { + var c = gf() + var a + for (a = 0; a < 16; a++) c[a] = i[a] + for (a = 253; a >= 0; a--) { + S(c, c) + if (a !== 2 && a !== 4) M(c, c, i) + } + for (a = 0; a < 16; a++) o[a] = c[a] + } + + function pow2523 (o, i) { + var c = gf() + var a + for (a = 0; a < 16; a++) c[a] = i[a] + for (a = 250; a >= 0; a--) { + S(c, c) + if (a !== 1) M(c, c, i) + } + for (a = 0; a < 16; a++) o[a] = c[a] + } + + // Note: difference from TweetNaCl - BLAKE2b used to hash instead of SHA-512. + function crypto_hash (out: Uint8Array, m: Uint8Array, n: number) { + const hash = new Blake2b(64).update(m).digest() + for (let i = 0; i < 64; ++i) { + out[i] = hash[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: Uint8Array, sk: Uint8Array, seeded?: boolean) { + var d = new Uint8Array(64) + var p = [gf(), gf(), gf(), gf()] + var i + + if (!seeded) { + var QUOTA = 65536 // https://w3c.github.io/webcrypto/#Crypto-method-getRandomValues + var i, n = 32, 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++) sk[i] = v[i] + cleanup(v) + } + + 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 = Math.floor((x[j] + 128) / 256) + 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: Uint8Array, m: Uint8Array, n: number, sk: Uint8Array) { + 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: Uint8Array, sm: Uint8Array, n: number, pk: Uint8Array) { + var i + var t = new Uint8Array(32), h = new Uint8Array(64) + var p = [gf(), gf(), gf(), gf()], + q = [gf(), gf(), gf(), gf()] + + 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] + return n + } + + var crypto_sign_BYTES = 64, + crypto_sign_PUBLICKEYBYTES = 32, + crypto_sign_SECRETKEYBYTES = 64, + crypto_sign_SEEDBYTES = 32 + + /* High-level API */ + + function checkArrayTypes (...args: Uint8Array[]) { + for (var i = 0; i < args.length; i++) { + if (!(args[i] instanceof Uint8Array)) + throw new TypeError(`expected Uint8Array; received ${args[i].constructor?.name ?? typeof args[i]}`) + } + } + + function cleanup (arr: Uint8Array | any[]) { + for (var i = 0; i < arr.length; i++) arr[i] = 0 + } + + const sign = function (msg: Uint8Array, secretKey: Uint8Array) { + 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 + } + + const open = function (signedMsg: Uint8Array, publicKey: Uint8Array) { + 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 + } + + const detached = function (msg: Uint8Array, secretKey: Uint8Array) { + var signedMsg = sign(msg, secretKey) + var sig = new Uint8Array(crypto_sign_BYTES) + for (var i = 0; i < sig.length; i++) sig[i] = signedMsg[i] + return sig + } + + const verify = function (msg: Uint8Array, sig: Uint8Array, publicKey: Uint8Array) { + 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) + } + + const keyPair = { + create () { + var pk = new Uint8Array(crypto_sign_PUBLICKEYBYTES) + var sk = new Uint8Array(crypto_sign_SECRETKEYBYTES) + crypto_sign_keypair(pk, sk) + return { publicKey: pk, secretKey: sk } + }, + + fromSecretKey (secretKey: Uint8Array) { + 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) } + }, + + fromSeed (seed: Uint8Array) { + 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 } + } + } + + const publicKeyLength = crypto_sign_PUBLICKEYBYTES + const secretKeyLength = crypto_sign_SECRETKEYBYTES + const seedLength = crypto_sign_SEEDBYTES + const signatureLength = crypto_sign_BYTES + +} + +export const nacl = { + sign: NanoNaCl.sign, + open: NanoNaCl.open, + detached: NanoNaCl.detached, + verify: NanoNaCl.verify, + keyPair: NanoNaCl.keyPair +} +export default NanoNaCl.toString() -- 2.34.1