@nthparty/bcl/build/asymmetric.js

TypeScript library that provides a simple interface for symmetric (i.e., symmetric-key) and asymmetric (i.e., asymmetric-key) encryption/decryption primitives.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.Asymmetric_init = void 0;
/**
 * Asymmetric (i.e., public-key) encryption/decryption primitives.
 */
// eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types,@typescript-eslint/no-explicit-any
function Asymmetric_init(Sodium, Types) {
    const { Secret, Public, Plain, Cipher } = Types;
    return class Asymmetric {
        /**
         * Create a secret key.
         * @returns {Secret} Secret key.
         */
        static secret() {
            return new Secret(Sodium.random(32));
        }
        /**
         * Create a public key using a secret key (a bytes-like object of length 32).
         * @param {Secret} secretKey Secret key.
         * @returns {Public} Corresponding public key.
         */
        static public(secretKey) {
            return new Public(Sodium.scalarmultBase(secretKey));
        }
        /**
         * Encrypt a plaintext (a bytes-like object) using the supplied public key.
         * @param {Public} publicKey Recipient's public key.
         * @param {Plain} plaintext Message to encrypt.
         * @returns {Cipher} Encrypted ciphertext.
         */
        static encrypt(publicKey, plaintext) {
            return new Cipher(Sodium.boxSeal(plaintext, publicKey));
        }
        /**
         * Decrypt a ciphertext (a bytes-like object) using the supplied secret key.
         * @param {Secret} secretKey Recipient's secret key.
         * @param {Cipher} ciphertext Ciphertext to decrypt.
         * @param {Public} publicKey Recipient's public key.
         * @returns {Plain} Decrypted plaintext.
         */
        static decrypt(secretKey, ciphertext, publicKey) {
            return new Plain(Sodium.boxSealOpen(ciphertext, publicKey !== null && publicKey !== void 0 ? publicKey : this.public(secretKey), secretKey));
        }
    };
}
exports.Asymmetric_init = Asymmetric_init;