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decrypt.ts
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decrypt.ts
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/*
* Copyright 漏 2021 Lisk Foundation
*
* See the LICENSE file at the top-level directory of this distribution
* for licensing information.
*
* Unless otherwise agreed in a custom licensing agreement with the Lisk Foundation,
* no part of this software, including this file, may be copied, modified,
* propagated, or distributed except according to the terms contained in the
* LICENSE file.
*
* Removal or modification of this copyright notice is prohibited.
*
*/
import * as cryptography from '@liskhq/lisk-cryptography';
import { Command, Flags as flagParser } from '@oclif/core';
import * as fs from 'fs-extra';
import { flagsWithParser } from '../../../utils/flags';
import { getPasswordFromPrompt } from '../../../utils/reader';
interface EncryptedMessageObject {
readonly version: string;
readonly ciphertext: string;
readonly mac: string;
readonly kdf: cryptography.encrypt.KDF;
readonly kdfparams: {
parallelism: number;
iterations: number;
memorySize: number;
salt: string;
};
readonly cipher: cryptography.encrypt.Cipher;
readonly cipherparams: {
iv: string;
tag: string;
};
}
interface inputFileData {
encryptedPassphrase: EncryptedMessageObject;
publicKey?: string;
}
export class DecryptCommand extends Command {
static description =
'Decrypt secret passphrase using the password provided at the time of encryption.';
static examples = [
'passphrase:decrypt --file-path ./my/path/output.json',
'passphrase:decrypt --file-path ./my/path/output.json --password your-password',
];
static flags = {
password: flagsWithParser.password,
'file-path': flagParser.string({
char: 'f',
description: 'Path of the file to import from',
required: true,
}),
};
async run(): Promise<void> {
const { flags } = await this.parse(DecryptCommand);
const { encryptedPassphrase } = fs.readJSONSync(flags['file-path']) as unknown as inputFileData;
const password = flags.password ?? (await getPasswordFromPrompt('password'));
const passphrase = await cryptography.encrypt.decryptMessageWithPassword(
encryptedPassphrase,
password,
'utf-8',
);
this.log(JSON.stringify(passphrase, undefined, ' '));
}
}