JSP:Redirection based on Cipher Strength of Browser

[Anurag Gupta]

Hi
I need to Redirect to different pages based on the client Browser's Cipher Strength (56 bit and 128 bit).
The Web Server being used is Apache / IBM Http Server.
Is it possible to do so? If yes , then how ?
Regards
Anurag

[William Brogden]

If the cipher strength is specified in a HTTP header you can get the header contents with the getHeader( String name ) method in the HttpServletRequest class.
Bill

[Dan Richardson]

If your servlet container is servlet 2.3 compliant, there are some additional options available. Check out the servlet 2.3 spec. There is a method of the ServletRequest called isSecure. If this returns true, you can check the following from the request:
Integer keySize = (Integer)request.getAttribute("javax.servlet.request.key_size");
This is the bit size of the encryption algorithm.
You can also check the cipher suite.
String cipherSuite = (String)request.getAttribute("javax.servlet.request.cipher_suite");