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aes-js

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aes-js

A pure JavaScript implementation of the AES block cipher and all common modes of operation.

  • 3.1.2
  • unpublished
  • latest
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  • npm
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decreased by-4.92%
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What is aes-js?

The aes-js npm package is a pure JavaScript implementation of the AES block cipher algorithm and all common modes of operation (CBC, CFB, CTR, ECB, and OFB).

What are aes-js's main functionalities?

Encryption and Decryption

This feature allows you to encrypt and decrypt text using AES. The code sample shows how to convert text to bytes, encrypt it, and then decrypt it back to the original text.

{"encryption":"var AES = require('aes-js'); var key = AES.utils.utf8.toBytes('your-key-here'); var text = 'Text to encrypt'; var textBytes = AES.utils.utf8.toBytes(text); var aesCtr = new AES.ModeOfOperation.ctr(key, new AES.Counter(5)); var encryptedBytes = aesCtr.encrypt(textBytes); var encryptedHex = AES.utils.hex.fromBytes(encryptedBytes);","decryption":"var encryptedBytes = AES.utils.hex.toBytes(encryptedHex); var aesCtr = new AES.ModeOfOperation.ctr(key, new AES.Counter(5)); var decryptedBytes = aesCtr.decrypt(encryptedBytes); var decryptedText = AES.utils.utf8.fromBytes(decryptedBytes);"}

Conversion Utilities

aes-js provides utility functions to convert text to bytes and vice versa, as well as to convert bytes to hex strings and vice versa. This is useful for handling the data before and after encryption/decryption.

{"conversion":"var AES = require('aes-js'); var text = 'Text to convert'; var textBytes = AES.utils.utf8.toBytes(text); var textHex = AES.utils.hex.fromBytes(textBytes); var bytes = AES.utils.hex.toBytes(textHex); var textFromBytes = AES.utils.utf8.fromBytes(bytes);"}

Block Cipher Modes of Operation

aes-js supports various modes of operation for the AES algorithm, including CBC (Cipher Block Chaining), CTR (Counter), and others. The code sample demonstrates how to use CBC and CTR modes for encryption.

{"cbc":"var AES = require('aes-js'); var key = AES.utils.utf8.toBytes('your-key-here'); var iv = AES.utils.utf8.toBytes('initialization-vector'); var text = 'Text to encrypt'; var textBytes = AES.utils.utf8.toBytes(text); var aesCbc = new AES.ModeOfOperation.cbc(key, iv); var encryptedBytes = aesCbc.encrypt(textBytes);","ctr":"var aesCtr = new AES.ModeOfOperation.ctr(key, new AES.Counter(5)); var encryptedBytes = aesCtr.encrypt(textBytes);"}

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Package last updated on 09 Nov 2018

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