72 lines
1.9 KiB
JavaScript
72 lines
1.9 KiB
JavaScript
/**
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* @author cplussharp
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* @copyright Crown Copyright 2021
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* @license Apache-2.0
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*/
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import Operation from "../Operation.mjs";
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import OperationError from "../errors/OperationError.mjs";
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import { keyFromJwk, keyInfoToPem } from "../lib/KeyConvert.mjs";
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/**
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* JWK to PEM operation
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*/
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class JWKToPem extends Operation {
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/**
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* JWKToPem constructor
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*/
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constructor() {
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super();
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this.name = "JWK to PEM";
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this.module = "PublicKey";
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this.description = "Converts Keys in JSON Web Key format to PEM format (PKCS#8).";
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this.infoURL = "https://datatracker.ietf.org/doc/html/rfc7517";
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this.inputType = "string";
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this.outputType = "string";
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this.args = [];
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this.checks = [
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{
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"pattern": "\"kty\":\\s*\"(EC|RSA)\"",
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"flags": "gm",
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"args": []
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}
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];
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}
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/**
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* @param {string} input
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* @param {Object[]} args
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* @returns {string}
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*/
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run(input, args) {
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const inputJson = JSON.parse(input);
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let keys = [];
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if (Array.isArray(inputJson)) {
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keys = inputJson;
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} else if (Array.isArray(inputJson.keys)) {
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keys = inputJson.keys;
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} else if (typeof inputJson === "object" && inputJson !== null) {
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keys.push(inputJson);
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} else {
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throw new OperationError("Input is not a JSON Web Key");
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}
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let output = "";
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for (const jwk of keys) {
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if (!jwk || typeof jwk.kty !== "string") {
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throw new OperationError("Invalid JWK format");
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}
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if (jwk.kty !== "RSA" && jwk.kty !== "EC") {
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throw new OperationError(`Unsupported JWK key type '${jwk.kty}'`);
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}
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output += keyInfoToPem(keyFromJwk(jwk));
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}
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return output;
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}
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}
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export default JWKToPem;
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