simple_aes_cbc

This is a TypeScript module that provides a simple class for encryption and decryption functionality. It uses the AES-CBC-algorithm and it uses atob and btoa functions to perform base64 encoding/decoding.

Installation

deno

import { SimpleAesCbc } from "https://deno.land/x/simple_aes_cbc/mod.ts";

node

npm install simple-aes-cbc
bun install simple-aes-cbc
yarn install simple-aes-cbc

... etc

Usage

Here's an example of how to use this module:

deno

import { SimpleAesCbc } from "https://deno.land/x/simple_aes_cbc/mod.ts";

const stringCrypto = new SimpleAesCbc("1234567890123456", crypto.subtle);

const data = "hello my friend";

const encrypted = await stringCrypto.encryptString(data);

const decrypted = await stringCrypto.decryptString(encrypted);

console.log(decrypted); // "hello my friend"

node

import { webcrypto } from "node:crypto";
import { SimpleAesCbc } from "simple-aes-cbc";

const stringCrypto = new SimpleAesCbc("1234567890123456", webcrypto.subtle);

// ... same as above

API

new SimpleAesCbc(private_key: Uint8Array | string, subtle: SubtleCrypto, iv?: Uint8Array | string)

This is the constructor of the SimpleAesCbc class. It takes three arguments:

• private_key, 16, 24 or 32 bytes
• subtle. Which is used to encrypt and decrypt the data
• optional iv, 16 bytes.

encrypt(data: BufferSource): Promise<ArrayBuffer>

This method encrypts the given data.

decrypt(data: BufferSource): Promise<ArrayBuffer>

This method decrypts the given data.

encryptString(data: string): Promise<string>

Encrypts the given string using the private key. The encrypted string returned from this function might not be human readable or used safely in a URL. If you want a human readable string that is safe to use, use encryptStringSafe instead.

decryptString(data: string): Promise<string>

Decrypts the given string using the private key. This function expects the string to be in the same format as the one returned from encryptString. If you want to decrypt a string that was encrypted using encryptStringSafe, use decryptStringSafe instead.

encryptStringToBase64(data: string): Promise<string>

Encrypts the given string to a base64 encoded string using the private key. The encrypted string returned from this function is human readable and safe to use in a URL.

decryptStringFromBase64(data: string): Promise<string>

Decrypts the given base64 encoded string using the private key. This function expects the string to be in the same format as the one returned from encryptStringToBase64.

License

This module is licensed under the MIT License.