# Re: Rinjdael (AES) encryption in Ruby

**URL:** <https://www.ruby-forum.com/t/re-rinjdael-aes-encryption-in-ruby/78478>\
**Category:** Ruby\
**Created:** [December 6, 2006, 2:17am UTC](https://www.ruby-forum.com/t/re-rinjdael-aes-encryption-in-ruby/78478 "2006-12-06T02:17:24Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Chilkat\_S](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/8491ac/32.png) [@Chilkat\_S](https://www.ruby-forum.com/u/Chilkat_S)\
**Post date:** [December 6, 2006, 2:17am UTC](https://www.ruby-forum.com/t/re-rinjdael-aes-encryption-in-ruby/78478/1 "2006-12-06T02:17:24Z")

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I wrote a blog post regarding the problem in general:

Title: Encryption Compatibility: Matching Encrypted Output on Different  
Systems  
URL: [http://blog.chilkatsoft.com/?p=123](http://blog.chilkatsoft.com/?p=123)

To sum it up, these input parameters must match between encryptor and  
decryptor:  
(1) Algorithm  
(2) Mode (CBC, ECB)  
(3) Key Length (128-bit, 192-bit, 256-bit)  
(4) Initialization Vector  
(5) Secret Key  
(6) Padding Scheme (but only last block will differ if mismatched).

The article discusses each in detail, including character encoding  
issues if text is involved.  
The intent of the article is that anyone can read it regardless of  
programming language  
or encryption package/lib to understand the issues involved. I hope  
it helps…

-Matt