How can I encrypt with a RSA private key in deno? - rsa

Question

Per title, I can use crypto module to encrypt a content with public key like this crypto.publicEncrypt() in nodejs.
ref this https://nodejs.org/api/crypto.html#crypto_crypto_publicencrypt_key_buffer.
How can I do such thing in deno? Try to find out similar module of deno, but no luck.
Any help or suggestion is appreciate.

Answer 1

I recently implemented RSA in pure TypeScript. You can use god_crypto (I know I have weird taste of naming the library).
import { RSA } from "https://deno.land/x/god_crypto/mod.ts";
const publicKey = RSA.parseKey(`-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAsL3rvxnzQ3G8JjYqhUli
zCYdpwBcQR5ahk1qZAfikOHwvejLh1OeqelKuvd1Vw36R8xQmuuWPu/u2V/CRRQW
uO18dVGkmKe/SI9gwXzjRCJiFwM7F4wki7Rt7KKqydX70nzN33tARkE3obIBLPdy
OGqJjaJicDo9hFQsJ/SksizPD/BTlKa4AGyNWMcvmW7fMbeTiwDbEx3Z3sR0Opqn
5no7QJ+6UkhV32q5jgQ7Eg2AgMBnh5cN22bxu/YxNGzsRzh29yqeSPaRBRUB/K0t
TzmCXg9aKg/Xy7hyNpKdd8gi+wawBj6nxvBfCPwGN7gP4rsedM8TMX+ibsn/rID8
BQIDAQAB
-----END PUBLIC KEY-----
`);
const rsa = new RSA(publicKey)
console.log(await rsa.encrypt("Hello World"));
DISCLAIMER: I am the author of the library.

Answer 2

Don't think there's a library similar to that in deno currently. However you could port the crypto library to typescript and use it in deno https://github.com/nodejs/node/blob/master/lib/crypto.js

Answer 3

I come with workaround listed below. I am not sure about security impacts, but it helps until somebody comes with support for crypto here: https://github.com/denoland/deno/tree/master/std/node/#commonjs-module-loading or build deno native crypto module (supporting not only scrypt).
deno method
import { exec, IExecResponse, OutputMode } from "https://deno.land/x/exec/mod.ts";
const passwordHasher = async (password: string, salt: string) => {
const output: IExecResponse = await exec(
`node ./node_scripts/pbkdf2.js --string ${password} --salt ${salt}`,
{output: OutputMode.Capture}
);
return output.output;
}
export default passwordHasher;
pbkdf2.js node script
const crypto = require('crypto');
const argv = require('minimist')(process.argv.slice(2));
console.log(
crypto.pbkdf2Sync(argv.string, argv.salt, 100000, 64, 'sha512').toString('hex')
);