>Hi all,
>
>I have started testing using an AES encryption/decryption class that is accessed through a dot-net bridge (wwClient tools). It works but do not know which AES is it using - AES256 or AES128 etc. I asked the author (Rick Strahl) but he said the class being called in .Net just says "AES". He worked in this option to his encryption routines as a favor (I think).
>
>So does anyone know when .Net says "AES" is it AES256?
>
>I don't do anything in .net so have no idea how to find out - I have, of course, tried to look through the docs but don't see anything in the properties of the class to indicate this.
>
>Thanks,
>Albert

See here https://en.wikipedia.org/wiki/Advanced_Encryption_Standard

AES is a subset of Rijndael where the blocksize is limited to 16 bytes ( or 128 bits)
What you see is the keySize in bits: 128, 192 or 256

So, when .Net says AES, the only thing you know is that the block size is 16 bytes. The key size depends on how the class is used

Further reading https://nvlpubs.nist.gov/nistpubs/FIPS/NIST.FIPS.197.pdf