def encrypt(mode, key, iv, plaintext):
encryptor = botan.Cipher("SEED/{0}/NoPadding".format(mode), "encrypt",
binascii.unhexlify(key))
cipher_text = encryptor.cipher(binascii.unhexlify(plaintext),
binascii.unhexlify(iv))
return binascii.hexlify(cipher_text)
def decrypt(input, salt, passphrase):
iterations = 10000
output_size = 16
key = botan.pbkdf2(passphrase, salt, iterations, output_size, "SHA-1")
decryptor = botan.Cipher("AES-128/EAX", "decrypt", key)
return decryptor.cipher(input, salt)
def encrypt(input, passphrase):
rng = botan.RandomNumberGenerator()
# Use as both EAX IV and PBKDF2 salt
salt = rng.gen_random(10)
iterations = 10000
output_size = 16
key = botan.pbkdf2(passphrase, salt, iterations, output_size, "SHA-1")
encryptor = botan.Cipher("AES-128/EAX", "encrypt", key)
ciphertext = encryptor.cipher(input, salt)
return (ciphertext, salt)