Chilkat2-Python

Twofish CFB Mode Encryption

See more Encryption Examples

Demonstrates how to encrypt using Twofish CFB (Cipher Feedback) mode. Chilkat2-Python

import chilkat2

# This example assumes the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.

crypt = chilkat2.Crypt2()

crypt.CryptAlgorithm = "twofish"
crypt.CipherMode = "cfb"
crypt.KeyLength = 256

# EncodingMode specifies the encoding of the output for
# encryption, and the input for decryption.
# It may be "hex", "url", "base64", "quoted-printable", or many other choices.
crypt.EncodingMode = "hex"

ivHex = "000102030405060708090A0B0C0D0E0F"
crypt.SetEncodedIV(ivHex,"hex")

# The secret key must equal the size of the key.  For
# 256-bit encryption, the binary secret key is 32 bytes.
keyHex = "603deb1015ca71be2b73aef0857d77811f352c073b6108d72d9810a30914dff4"
crypt.SetEncodedKey(keyHex,"hex")

# Encrypt a string...
encStr = crypt.EncryptStringENC("We must face the fact that the preservation of individual freedom is incompatible with a full satisfaction of our views of distributive justice. -- Friedrich Hayek")
print(encStr)

decrypt = chilkat2.Crypt2()

decrypt.CryptAlgorithm = "twofish"
decrypt.CipherMode = "cfb"
decrypt.KeyLength = 256
decrypt.EncodingMode = "hex"
decrypt.SetEncodedIV(ivHex,"hex")
decrypt.SetEncodedKey(keyHex,"hex")

# Now decrypt:
decStr = decrypt.DecryptStringENC(encStr)
print(decStr)