PBKDF2 is a password-based key derivation function. In many applications of cryptography, user security is ultimately dependent on a password, and because a password usually can't be used directly as a cryptographic key, some processing is required. A salt provides a large set of keys for any given password, and an iteration count increases the cost of producing keys from a password, thereby also increasing the difficulty of attack.
SHA-2 (Secure Hash Algorithm 2) is a set of cryptographic hash functions designed by the United States National Security Agency (NSA) and first published in 2001.[3][4] They are built using the Merkle–Damgård construction, from a one-way compression function itself built using the Davies–Meyer structure from a specialized block cipher
The Advanced Encryption Standard (AES), also known by its original name Rijndael is a specification for the encryption of electronic data established by the U.S. National Institute of Standards and Technology (NIST) in 2001.[4]
Using PBKDF2 to generate key derivation:
let encryptedKey = CryptoJS.PBKDF2(password, salt, { hasher: CryptoJS.algo.SHA512, keySize, iterations });
Using AES with custom IV to encode
let encryptedMessage = CryptoJS.AES.encrypt(planText, encryptedKey, { iv: iv });
Using PBKDF2 to generate key derivation:
let decryptedKey = CryptoJS.PBKDF2(password, salt, { hasher: CryptoJS.algo.SHA512, keySize, iterations });
Using AES with custom IV to decode
let decryptedMessage = CryptoJS.AES.decrypt(encryptedMessage, decryptedKey, { iv: iv });
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