/
rsaGoalSigning.ts
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/
rsaGoalSigning.ts
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/*
* Copyright © 2020 Atomist, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import * as crypto from "crypto";
import {
GoalSigningAlgorithm,
GoalSigningKey,
GoalVerificationKey,
} from "../../api/machine/SigningKeys";
/**
* RSA based GoalSigningAlgorithm
*/
export const RsaGoalSigningAlgorithm: GoalSigningAlgorithm<string> = {
name: "rsa-sha512",
sign: (goal: string, key: GoalSigningKey<string>) => {
const signer = crypto.createSign("RSA-SHA512");
signer.update(goal);
signer.end();
const signature = signer.sign({
key: key.privateKey,
passphrase: key.passphrase,
});
return signature.toString("base64");
},
verify: (goal: string, signatureString: string, key: GoalVerificationKey<string>) => {
const signature = Buffer.from(signatureString, "base64");
const verifier = crypto.createVerify("RSA-SHA512");
verifier.update(goal);
verifier.end();
return verifier.verify(key.publicKey, signature);
},
};