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crypto-js

JavaScript library of crypto standards.


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Weekly downloads
7M
decreased by-4.03%
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What is crypto-js?

The crypto-js npm package is a library of cryptographic algorithms implemented in JavaScript. It's commonly used for secure encryption and decryption of data, hashing, and generating secure random bytes. It's suitable for both server-side and client-side applications in JavaScript.

What are crypto-js's main functionalities?

Encryption and Decryption

This feature allows you to encrypt and decrypt messages using various algorithms like AES, DES, Triple DES, Rabbit, and RC4. The code sample demonstrates how to encrypt and decrypt a message using AES.

{"encrypt": "CryptoJS.AES.encrypt('my message', 'secret key').toString()", "decrypt": "CryptoJS.AES.decrypt(encryptedMessage, 'secret key').toString(CryptoJS.enc.Utf8)"}

Hashing

Crypto-js can be used to hash data using algorithms like SHA-256, SHA-512, MD5, and more. The code sample shows how to hash a message using SHA-256 and SHA-512.

{"SHA256": "CryptoJS.SHA256('message').toString()", "SHA512": "CryptoJS.SHA512('message').toString()"}

HMAC (Hash-based Message Authentication Code)

This feature provides a way to verify both the data integrity and the authenticity of a message with a secret key. The code sample demonstrates generating an HMAC with the SHA-256 algorithm.

{"HMAC": "CryptoJS.HmacSHA256('message', 'secret').toString()"}

Progressive Ciphering

For large amounts of data, progressive ciphering allows you to encrypt or decrypt data in chunks rather than all at once. The code sample demonstrates how to encrypt data progressively.

{"progressiveCiphering": "var aesEncryptor = CryptoJS.algo.AES.createEncryptor('secret key', { iv: CryptoJS.enc.Hex.parse('0000000000000000') }); var ciphertextPart1 = aesEncryptor.process('part1 '); var ciphertextPart2 = aesEncryptor.process('part2 '); var ciphertextPart3 = aesEncryptor.process('part3 '); var ciphertextPart4 = aesEncryptor.finalize(); var encryptedMessage = ciphertextPart1.concat(ciphertextPart2).concat(ciphertextPart3).concat(ciphertextPart4).toString();"}

Secure Random Bytes Generation

Crypto-js can generate secure random bytes, which are useful for creating salts, keys, and other cryptographic elements. The code sample shows how to generate a random 16-byte string.

{"randomBytes": "CryptoJS.lib.WordArray.random(16).toString()"}

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Package last updated on 24 Oct 2023

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