@e280/authlocal/x/trust/concepts/crypto/crypto.js

User-sovereign login system for everybody

import { Hex } from "@e280/stz";
import * as ed from "@noble/ed25519";
export function unpackKey(key) {
    const bytes = Hex.bytes(key);
    if (bytes.length !== 32)
        throw new Error("invalid key");
    return bytes;
}
export async function deriveId(secret) {
    const secretBytes = unpackKey(secret);
    const idBytes = await ed.getPublicKeyAsync(secretBytes);
    return Hex.string(idBytes);
}
export async function generateKeypair() {
    const secret = Hex.random(32);
    const id = await deriveId(secret);
    return { id, secret };
}
export async function sign(message, secret) {
    return ed.signAsync(message, unpackKey(secret));
}
export async function verify(message, signature, id) {
    return ed.verifyAsync(signature, message, unpackKey(id));
}
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