/
crypto.ts
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/
crypto.ts
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// Copyright 2019 Google LLC
//
// 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 {Crypto} from '../crypto';
export class NodeCrypto implements Crypto {
async sha256DigestBase64(str: string): Promise<string> {
return crypto.createHash('sha256').update(str).digest('base64');
}
randomBytesBase64(count: number): string {
return crypto.randomBytes(count).toString('base64');
}
async verify(
pubkey: string,
data: string | Buffer,
signature: string
): Promise<boolean> {
const verifier = crypto.createVerify('sha256');
verifier.update(data);
verifier.end();
return verifier.verify(pubkey, signature, 'base64');
}
async sign(privateKey: string, data: string | Buffer): Promise<string> {
const signer = crypto.createSign('RSA-SHA256');
signer.update(data);
signer.end();
return signer.sign(privateKey, 'base64');
}
decodeBase64StringUtf8(base64: string): string {
return Buffer.from(base64, 'base64').toString('utf-8');
}
encodeBase64StringUtf8(text: string): string {
return Buffer.from(text, 'utf-8').toString('base64');
}
}