I solved the problem with aes-128-ecb in EzCrypto, and 
MCRYPT_RIJNDAEL_128, MCRYPT_MODE_ECB in PHP.

Kwonnam Son wrote:
> Hello, I'm a Ruby newbie.
> 
> Our site is developed with Ruby On Rails mainly, but some parts use PHP
> 5.
> So, in Ruby, it encrypt username with EzCrypto aes-128-cbc with a key
> and save it to browser cookie.
> But cannot decrypt the cookie  with PHP5's mcrypt RIJNDAEL128 CBC
> algorithm with the same key.
> (AFAIK RIJNDAEL128 == AES, am I right??)
> How can I decrypt the value which is encrypted with EzCrypto?
> I don't have to use aes-128-cbc.
> 
> Would you recomend any algorithm good for this kind problem?
> 
> Regards,


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