node-ciphers/dist/base.cjs

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

'use strict';

const node_buffer = require('node:buffer');
const constants = require('./constants.cjs');

class BaseCipher {
    #encodingOptions;
    constructor(encodingOptions) {
        this.#encodingOptions = {
            ...constants.defaultEncodingOptions,
            ...encodingOptions,
        };
    }
    get encodingOptions() {
        return this.#encodingOptions;
    }
    createErrorResult(error) {
        return {
            error: error,
            ok: false,
        };
    }
    createOkResult(value) {
        return {
            ok: true,
            value: value,
        };
    }
    dataToBuffer(data, encoding) {
        return typeof data === 'string' ? node_buffer.Buffer.from(data, encoding) : data;
    }
    getCipherResult(cipher, data, encodingOptions) {
        const outputEncoding = encodingOptions?.encryptOutput || this.#encodingOptions.encryptOutput;
        return cipher.update(this.dataToBuffer(data, encodingOptions?.encryptInput || this.#encodingOptions.encryptInput), undefined, outputEncoding) + cipher.final(outputEncoding);
    }
    getDecipherResult(decipher, encryptedData, encodingOptions) {
        const outputEncoding = encodingOptions?.decryptOutput || this.#encodingOptions.decryptOutput;
        return decipher.update(this.dataToBuffer(encryptedData, encodingOptions?.decryptInput || this.#encodingOptions.decryptInput), undefined, outputEncoding) + decipher.final(outputEncoding);
    }
    parseJson(data) {
        try {
            return this.createOkResult(JSON.parse(data));
        }
        catch (error) {
            return this.createErrorResult(error);
        }
    }
}

exports.BaseCipher = BaseCipher;
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