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remove lint overrides
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parent
26c37ea522
commit
5e403cf068
1 changed files with 57 additions and 43 deletions
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@ -1,10 +1,6 @@
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/* eslint-disable no-unused-vars */
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/* eslint-disable camelcase */
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/* eslint-disable jsdoc/require-jsdoc */
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/* eslint-disable no-console */
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/**
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* @author Configured Things Ltd. [getconfigured@configuredthings.com]
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* @copyright Crown Copyright 2024
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* @copyright Crown Copyright 2025
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* @license Apache-2.0
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*/
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@ -43,6 +39,7 @@ class LibHydrogenCurve25519Signing extends Operation {
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];
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}
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/* eslint-disable camelcase */
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/**
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* @param {JSON} input
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* @param {Object[]} args
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@ -50,8 +47,8 @@ class LibHydrogenCurve25519Signing extends Operation {
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*/
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async run(input, args) {
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const [context, privateKey] = args;
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const wasm_src = await fetch(new URL(`${self.docURL}/assets/libhydrogen-wasm/libhydrogen.wasm`));
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const wasm = await WebAssembly.compileStreaming(wasm_src);
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const wasmSrc = await fetch(new URL(`${self.docURL}/assets/libhydrogen-wasm/libhydrogen.wasm`));
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const wasm = await WebAssembly.compileStreaming(wasmSrc);
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const imports = {
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"wasi_snapshot_preview1": {
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args_get() {
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@ -204,25 +201,28 @@ class LibHydrogenCurve25519Signing extends Operation {
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// Generated signature for JSON input
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return await sign(input, context, privateKey);
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}
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/* eslint-enable camelcase */
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}
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let instance, dataview;
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//
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// Helper function to reserve space in the buffer used
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// as a stack between js and the wasm.
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//
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// Offset must be an an object so we can update it's value
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// {value: n}
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//
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// Designed to allow a sequence of reservations such as
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//
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// let offset = {value: 0};
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// buf1 = reserve (offset, 100);
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// buf2 = reserve (offset, 590);
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// ...
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//
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/**
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* Helper function to reserve space in the buffer used
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* as a stack between js and the wasm.
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* @param {Object} offset - Must be an an object so we can update it's value
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* @param {number} offset.value
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* @param {number} length
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* @returns {Uint8Array} Returns a UInt8Array representation of the buffer
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*
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* @example
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* // Designed to allow a sequence of reservations such as
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*
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* let offset = {value: 0};
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* buf1 = reserve (offset, 100);
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* buf2 = reserve (offset, 590);
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* ...
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*/
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function reserve(offset, length) {
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const a = new Uint8Array(dataview.buffer, offset.value, length);
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const newOffset = a.byteOffset + a.byteLength;
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@ -230,36 +230,52 @@ function reserve(offset, length) {
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return a;
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}
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//
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// Public key signing
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//
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/**
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* A signed JSON object.
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* @typedef {Object} SignedJSON
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* @property {Uint8Array} context - A buffer representing the context used to define the context of the signing operation,
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see {@link https://github.com/jedisct1/libhydrogen/wiki/Contexts}
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* @property {Uint8Array} input - A buffer representing the stringified JSON object used as the input to the signing operation
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* @property {Uint8Array} signature - A buffer representing the digital signature of the signed JSON object
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*/
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/**
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* Digital signing of a JSON object
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* @param {JSON} input - A JSON object to be signed
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* @param {string} context - A string used to define the context of the signing operation,
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* see {@link https://github.com/jedisct1/libhydrogen/wiki/Contexts}
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* @param {Uint8Array} privateKey - The private key to use for the digital signing operation
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* @returns {SignedJSON} A signed JSON object
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*/
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async function sign(input, context, privateKey) {
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// Importing libhydrogen's signing keygen and signing and verification functions
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const { hydro_sign_keygen, hydro_sign_create, hydro_sign_verify } = instance.exports;
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// eslint-disable-next-line camelcase
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const { hydro_sign_create } = instance.exports;
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const textEncoder = new TextEncoder();
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// We have to create the stack frame to pass to libHydrogen
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// in the dataview Buffer, and then pass in pointers to
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// that buffer
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const offset = { value: 0 };
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const context_arr = reserve(offset, hydro.hash_CONTEXTBYTES);
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const context_ab = textEncoder.encode(context);
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const contextArr = reserve(offset, hydro.hash_CONTEXTBYTES);
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const contextAb = textEncoder.encode(context);
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for (let i = 0; i < hydro.hash_CONTEXTBYTES; i++) {
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context_arr.set([context_ab.at(i)], i);
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contextArr.set([contextAb.at(i)], i);
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}
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const message_ab = textEncoder.encode(JSON.stringify(input));
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const message_arr = reserve(offset, message_ab.length);
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const messageStr = JSON.stringify(input);
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const messageAb = textEncoder.encode(messageStr);
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const messageArr = reserve(offset, messageAb.length);
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for (let i = 0; i < message_ab.length; i++) {
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message_arr.set([message_ab.at(i)], i);
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for (let i = 0; i < messageAb.length; i++) {
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messageArr.set([messageAb.at(i)], i);
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}
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// Generate a key pair
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const privateKey_arr = reserve(offset, hydro.sign_SECRETKEYBYTES);
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const privateKeyArr = reserve(offset, hydro.sign_SECRETKEYBYTES);
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for (let i = 0; i < privateKey.length; i++) {
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privateKey_arr.set([privateKey.at(i)], i);
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privateKeyArr.set([privateKey.at(i)], i);
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}
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// Reserving memory for the signature
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@ -268,18 +284,16 @@ async function sign(input, context, privateKey) {
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// Creating signature of message with secret key
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hydro_sign_create(
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signature.byteOffset,
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message_arr.byteOffset,
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message_arr.byteLength,
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context_arr.byteOffset,
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privateKey_arr.byteOffset,
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messageArr.byteOffset,
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messageArr.byteLength,
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contextArr.byteOffset,
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privateKeyArr.byteOffset,
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);
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console.log(`generated signature - ${Buffer.from(signature).toString("hex")}`);
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return {
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context,
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input,
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signature: Buffer.from(signature).toString("hex")
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context: contextArr,
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input: messageArr,
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signature
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};
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}
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