secure-hasher.ts
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secure-hasher.ts
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	import crypto from "crypto";
	const algorithm = "sha512";
	import { promisify } from "util";

	const pbkdf2 = promisify(crypto.pbkdf2);

	const SecureHasher = {
	generateRandomSalt(salt_length: number) {
	return crypto.randomBytes(salt_length).toString("base64");
	},
	async hash(
	value_to_hash: crypto.BinaryLike,
	salt: crypto.BinaryLike,
	{ iterations, key_length }: any
	) {
	const key = await pbkdf2(
	value_to_hash,
	salt,
	iterations,
	key_length,
	algorithm
	);
	return `${iterations}.${key_length}.${salt}.${key.toString("hex")}`;
	},
	async matches(value: crypto.BinaryLike, hash_with_params: string) {
	const [iterations, key_length, salt, hash] =
	hash_with_params.split(".");

	const key = await pbkdf2(
	value,
	salt,
	parseInt(iterations, 10),
	parseInt(key_length, 10),
	algorithm
	);
	return key.toString("hex") === hash;
	},
	};

	export default SecureHasher;