node-ciphers/dist/des/_internals/base/index.js

Lightweight AES and DES encryption library for Node.js, featuring flexible encoding, multiple cipher modes, and TypeScript support.

import { availableCiphers } from "../../../_internals/constants.js";
import { BaseCipher } from "../../../_internals/base-cipher.js";
import { createCipheriv, createDecipheriv } from "node:crypto";

//#region src/des/_internals/base/index.ts
const keyLengthToModePrefixMap = {
	8: "",
	16: "-ede",
	24: "-ede3"
};
var BaseDesCipher = class extends BaseCipher {
	#algorithm;
	#key;
	constructor(key, mode, encodingOptions) {
		super(encodingOptions);
		this.#key = this.dataToBuffer(key, this.encodingOptions.key);
		const desModePrefix = keyLengthToModePrefixMap[this.#key.byteLength];
		if (desModePrefix === void 0) throw new Error("Invalid key length");
		this.#algorithm = `des${desModePrefix}-${mode}`;
		if (!availableCiphers.includes(this.#algorithm)) throw new Error("Invalid algorithm");
	}
	get algorithm() {
		return this.#algorithm;
	}
	createCipher(iv, options) {
		return createCipheriv(this.#algorithm, this.#key, iv, options);
	}
	createDecipher(iv, options) {
		return createDecipheriv(this.#algorithm, this.#key, iv, options);
	}
};

//#endregion
export { BaseDesCipher };
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