Welcome to my site!

My name is Chris Kowalczyk. I have been working as a software developer for some time now. I am passionate about cryptography and ciphers, and about security in IT in general.

On Crypto-Online website you will find many popular ciphers, which I have implemented, and which allow everybody to try them online, without the need of downloading or installing any additional applications.

I invite you to browse the website. I will happily welcome all comments, regarding inaccuracies in descriptions, errors in cipher algorithms, and new topics you would like to learn about. In the footer, there are a number of useful buttons and links. Feel free to use them!

Crypto-Online contains mostly scripts which allow encryption and decryption of text messages. For more detailed information regarding the algorithms, their history, and cryptanalysis, please visit Crypto-IT webpage, where I have also described a lot of other topics regarding cryptography.

If you want to contact me for any reason whatsoever, please use the link below:
  Send Email

I'd be happy to hear from you and I will reply as quickly as I can.

Thank you for your interest!
Chris Kowalczyk