there are several modules :

Crypt::Blowfish Dave Paris
my $cipher = new Crypt::Blowfish $key;
my $ciphertext = $cipher->encrypt($plaintext);

[download]
Crypt::Blowfish_PP Matthew Byng-Maddick 
$blowfish=new Crypt::Blowfish_PP($key);

[download]
Now as a general rule your key, should be as random as possible...

UPDATE :
It's not really related to your question but you should give a try to RIJNDAEL the new AES...
Several modules exists, and it's a really good algo.

In reply to Re: How to encrypt use(Crypt::Blowfish.pm) encryp tech....??? by arhuman
in thread How to encrypt use(Crypt::Blowfish.pm) encryp tech....??? by Anonymous Monk

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