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(Python) Blowfish Encryption to Match PHP's Mcrypt Extension

Demonstrates how to match Blowfish encryption results with PHP's mcrypt extension.

Please refer to this PHP (non-Chilkat) example for PHP Blowfish Encryption. The code here matches the PHP mcrypt results on that web page.

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Python Module for Windows, Linux, Alpine Linux,
MAC OS X, Solaris, FreeBSD, OpenBSD,
Raspberry Pi and other single board computers

import sys
import chilkat

crypt = chilkat.CkCrypt2()

success = crypt.UnlockComponent("Anything for 30-day trial")
if (success != True):
    print(crypt.lastErrorText())
    sys.exit()

#  Use "blowfish2" to get proper results:
crypt.put_CryptAlgorithm("blowfish2")

#  CipherMode may be "ecb" or "cbc"
crypt.put_CipherMode("cbc")

#  KeyLength (in bits) may be a number between 32 and 448.
#  128-bits is usually sufficient.  The KeyLength must be a
#  multiple of 8.
crypt.put_KeyLength(256)

#  Pad with NULL bytes (PHP pads with NULL bytes)
crypt.put_PaddingScheme(3)

#  EncodingMode specifies the encoding of the output for
#  encryption, and the input for decryption.
#  It may be "hex", "url", "base64", or "quoted-printable".
crypt.put_EncodingMode("hex")

#  The blowfish algorithm uses a 64-bit block size,
#  therefore the IV must be 8 bytes:
ivAscii = "12345678"
crypt.SetEncodedIV(ivAscii,"ascii")

#  For 256-bit encryption, the key is 32 bytes:
keyAscii = "1234567890123456ABCDEFGHIJKLMNOP"
crypt.SetEncodedKey(keyAscii,"ascii")

plainText = "The quick brown fox jumped over the lazy dog"

cipherText = crypt.encryptStringENC(plainText)
print(cipherText)
#  Output should be (case insensitive):
#  276855ca6c0d60f7d9708210440c1072e05d078e733b34b4198d609dc2fcc2f0c30926cdef3b6d52baf6e345aa03f83e

#  Do 128-bit Blowfish encryption:
crypt.put_KeyLength(128)
keyAscii = "1234567890123456"
crypt.SetEncodedKey(keyAscii,"ascii")

cipherText = crypt.encryptStringENC(plainText)
print(cipherText)
#  Output should be (case insensitive):
#  d2b5abb73208aea3790621d028afcc74d8dd65fb9ea8e666444a72523f5ecca60df79a424e2c714fa6efbafcc40bdca0

 

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