Using Rijndael in Counter (CTR) Mode

[rossum]

The .NET CipherMode enumeration does not include CTR mode. I want to
use Rijndael (AES) in CTR mode. Is there anything easily available in
C# to use or do I have to roll my own? I have found some code in
C++/.NET but not yet in C#.

Thanks,

rossum

[rossum]

On Sun, 06 Aug 2006 21:40:26 +0100, rossum <ro******@coldmail.com>
wrote:

>The .NET CipherMode enumeration does not include CTR mode. I want to
use Rijndael (AES) in CTR mode. Is there anything easily available in
C# to use or do I have to roll my own? I have found some code in
C++/.NET but not yet in C#.

Thanks,

rossum

I have not been able to find a direct solution. I ended up writing an
EncryptBlock() method which used ECB mode with no padding and building
my own CTR Mode function from that. I does seem strange that CTR mode
is not included in .NET as a standard option.

rossum