CryptoAuthLib-Tools | Atmel CryptoAuthLib my own HAL implementations

pip install pycryptodome


from Crypto.Cipher import AES
import binascii, os

def encrypt_AES_GCM(msg, secretKey):
    aesCipher = AES.new(secretKey, AES.MODE_GCM)
    ciphertext, authTag = aesCipher.encrypt_and_digest(msg)
    return (ciphertext, ae  

from Crypto.Cipher import AES
import scrypt, os, binascii

def encrypt_AES_GCM(msg, password):
    kdfSalt = os.urandom(16)
    secretKey = scrypt.hash(password, kdfSalt, N=16384, r=8, p=1, buflen=32)
    aesCipher = AES.new(secretKey, AES.MODE_GCM)
  

public byte[][] gcmEncrypt(SecretKey key, byte[] iv, byte[] data) throws GeneralSecurityException {
        Cipher cipher = Cipher.getInstance("AES/GCM/NoPadding");
        cipher.init(Cipher.ENCRYPT_MODE, key, new GCMParameterSpec(128, iv));
         

public byte[] gcmDecrypt(SecretKey key, byte[] iv, byte[] ciphertext) throws GeneralSecurityException {
        Cipher cipher = Cipher.getInstance("AES/GCM/NoPadding");
        cipher.init(Cipher.DECRYPT_MODE, key, new GCMParameterSpec(128, iv));