(Tcl) 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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load ./chilkat.dll

set crypt [new_CkCrypt2]

set success [CkCrypt2_UnlockComponent $crypt "Anything for 30-day trial"]
if {[expr $success != 1]} then {
    puts [CkCrypt2_lastErrorText $crypt]
    delete_CkCrypt2 $crypt
    exit
}

#  Use "blowfish2" to get proper results:
CkCrypt2_put_CryptAlgorithm $crypt "blowfish2"

#  CipherMode may be "ecb" or "cbc"
CkCrypt2_put_CipherMode $crypt "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.
CkCrypt2_put_KeyLength $crypt 256

#  Pad with NULL bytes (PHP pads with NULL bytes)
CkCrypt2_put_PaddingScheme $crypt 3

#  EncodingMode specifies the encoding of the output for
#  encryption, and the input for decryption.
#  It may be "hex", "url", "base64", or "quoted-printable".
CkCrypt2_put_EncodingMode $crypt "hex"

#  The blowfish algorithm uses a 64-bit block size,
#  therefore the IV must be 8 bytes:
set ivAscii "12345678"
CkCrypt2_SetEncodedIV $crypt $ivAscii "ascii"

#  For 256-bit encryption, the key is 32 bytes:
set keyAscii "1234567890123456ABCDEFGHIJKLMNOP"
CkCrypt2_SetEncodedKey $crypt $keyAscii "ascii"

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

set cipherText [CkCrypt2_encryptStringENC $crypt $plainText]
puts "$cipherText"
#  Output should be (case insensitive):
#  276855ca6c0d60f7d9708210440c1072e05d078e733b34b4198d609dc2fcc2f0c30926cdef3b6d52baf6e345aa03f83e

#  Do 128-bit Blowfish encryption:
CkCrypt2_put_KeyLength $crypt 128
set keyAscii "1234567890123456"
CkCrypt2_SetEncodedKey $crypt $keyAscii "ascii"

set cipherText [CkCrypt2_encryptStringENC $crypt $plainText]
puts "$cipherText"
#  Output should be (case insensitive):
#  d2b5abb73208aea3790621d028afcc74d8dd65fb9ea8e666444a72523f5ecca60df79a424e2c714fa6efbafcc40bdca0

delete_CkCrypt2 $crypt