@evan/wasm
Version:
set of wasm modules
108 lines (107 loc) • 3.77 kB
JavaScript
var __defProp = Object.defineProperty;
var __markAsModule = (target) => __defProp(target, "__esModule", { value: true });
var __export = (target, all) => {
__markAsModule(target);
for (var name in all)
__defProp(target, name, { get: all[name], enumerable: true });
};
__export(exports, {
secretbox: () => secretbox,
sign: () => sign
});
var _a, _b, _c, _d, _e;
let wasm;
{
const module2 = new WebAssembly.Module(require('fs').readFileSync(require('path').join(__dirname, '../../src/nacl/simd.wasm')));
const instance = new WebAssembly.Instance(module2);
wasm = instance.exports;
}
const u16_max = 2 ** 16;
const { memory, sign_pair, sign_sign, sign_verify, secretbox_open, secretbox_seal } = wasm;
let len = memory.buffer.byteLength;
let u8 = new Uint8Array(memory.buffer);
let k8 = new Uint8Array(memory.buffer, 131072, 32);
let p8 = new Uint8Array(memory.buffer, 131072, 64);
let n8 = new Uint8Array(memory.buffer, 131104, 24);
let s8 = new Uint8Array(memory.buffer, 131104, 64);
let nn8 = new Uint8Array(memory.buffer, 131136, 32);
const encode_utf8 = (_e = (_d = (_b = (_a = globalThis.Deno) == null ? void 0 : _a.core) == null ? void 0 : _b.encode) != null ? _d : (_c = globalThis.Buffer) == null ? void 0 : _c.from.bind(globalThis.Buffer)) != null ? _e : TextEncoder.prototype.encode.bind(new TextEncoder());
function resize(size) {
memory.grow(Math.ceil((size - len) / u16_max));
len = memory.buffer.byteLength;
u8 = new Uint8Array(memory.buffer);
k8 = new Uint8Array(memory.buffer, 131072, 32);
p8 = new Uint8Array(memory.buffer, 131072, 64);
n8 = new Uint8Array(memory.buffer, 131104, 24);
s8 = new Uint8Array(memory.buffer, 131104, 64);
nn8 = new Uint8Array(memory.buffer, 131136, 32);
}
;
class secretbox {
static tag_length = 16;
static key_length = 32;
static nonce_length = 24;
static open(buf, key, nonce) {
if (len < 131328 + buf.length + buf.length)
resize(131328 + buf.length + buf.length);
k8.set(key);
n8.set(nonce);
u8.set(buf, 131328);
if (secretbox_open(131072, buf.length) !== 0)
throw new Error("nacl: failed to open");
return u8.slice(131328 + buf.length, 131312 + buf.length + buf.length);
}
static seal(buf, key, nonce) {
if (typeof buf === "string")
buf = encode_utf8(buf);
if (len < 131344 + buf.length + buf.length)
resize(131344 + buf.length + buf.length);
k8.set(key);
n8.set(nonce);
u8.set(buf, 131328);
return secretbox_seal(131072, buf.length), u8.slice(131328 + buf.length, 131344 + buf.length + buf.length);
}
}
;
class sign {
static seed_length = 32;
static noise_length = 32;
static signature_length = 64;
static public_key_length = 32;
static secret_key_length = 64;
static private_key_length = 32;
static pair(seed) {
if (seed)
k8.set(seed);
else
for (let o = 0; o < 32; o++)
k8[o] = Math.random() * 255;
if (sign_pair(131072) !== 0)
throw new Error("nacl: failed to create pair");
const secret = p8.slice();
return { secret, public: secret.subarray(32), private: secret.subarray(0, 32) };
}
static verify(key, sig, buf) {
if (typeof buf === "string")
buf = encode_utf8(buf);
if (len < 131328 + buf.length)
resize(131328 + buf.length);
k8.set(key);
s8.set(sig);
u8.set(buf, 131328);
return !!sign_verify(131072, buf.length);
}
static sign(key, buf, noise) {
if (typeof buf === "string")
buf = encode_utf8(buf);
if (len < 131328 + buf.length)
resize(131328 + buf.length);
p8.set(key);
u8.set(buf, 131328);
if (noise)
nn8.set(noise);
if (sign_sign(131072, buf.length, noise ? 1 : 0) !== 0)
throw new Error("nacl: failed to sign");
return p8.slice();
}
}