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How to determine SSL/TLS encryption strength

Also by EldoS: CallbackProcess
A component to control process creation and termination in Windows and .NET applications.
#29611
Posted: 05/27/2014 20:10:04
by Erich Kuba (Standard support level)
Joined: 05/16/2013
Posts: 38

Hi there,

I would like to display to my users the strength of thier encryption to the server (i.e. SSLv3 256bit) or something like that.

I know I can get the Version and the CipherSuite, but is there any way of knowing how big the key is for the connection?

Also, I would like to display information about the certificate that the client received from the server ... where would I get that information?

I hope this makes sense.

Cheers

Erich
#29612
Posted: 05/28/2014 00:10:28
by Eugene Mayevski (EldoS Corp.)

Quote
Erich Kuba wrote:
I know I can get the Version and the CipherSuite, but is there any way of knowing how big the key is for the connection?


There's no number directly available - you'd need to calculate it based on the cipher suite.

Quote
Erich Kuba wrote:
Also, I would like to display information about the certificate that the client received from the server ... where would I get that information?


Collect all received certificates in OnCertificateValidate event handler, then do what you need with them.


Sincerely yours
Eugene Mayevski

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