This update adds support for the following Advanced Encryption Standard (AES) cipher suites in the Schannel.dll module for Windows Server 2003:
- TLS_RSA_WITH_AES_128_CBC_SHA AES128-SHA
- TLS_RSA_WITH_AES_256_CBC_SHA AES256-SHA
Note: These cipher suites are based on the RC4 algorithm.
Source:
KB948963 - An update is available to adds support for the TLS_RSA_WITH_AES_128_CBC_SHA AES128-SHA and the TLS_RSA_WITH_AES_256_CBC_SHA AES256-SHA AES cipher suites in Windows Server 2003
Read the complete post at http://exchange.si/archive/2008/07/17/cipher-suite-update-for-windows-server-2003.aspx