123456789101112131415161718192021222324252627282930313233343536
import { getAlgorithm } from "./algorithm.ts";import { base64url } from "./deps.ts";import { encoder, isNull } from "./util.ts";
import type { Algorithm } from "./algorithm.ts";
export async function verify(  signature: Uint8Array,  key: CryptoKey | null,  alg: Algorithm,  signingInput: string,): Promise<boolean> {  return isNull(key) ? signature.length === 0 : await crypto.subtle.verify(    getAlgorithm(alg),    key,    signature,    encoder.encode(signingInput),  );}
export async function create(  alg: Algorithm,  key: CryptoKey | null,  signingInput: string,): Promise<string> {  return isNull(key) ? "" : base64url.encode(    new Uint8Array(      await crypto.subtle.sign(        getAlgorithm(alg),        key,        encoder.encode(signingInput),      ),    ),  );}