How to detect if a browser ...
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... supports 128 bit encryption? Say, you need to do this in your own ISAPI Filter dll? Any link, sample code, or hint is appreciated. Thanks.
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... supports 128 bit encryption? Say, you need to do this in your own ISAPI Filter dll? Any link, sample code, or hint is appreciated. Thanks.
I'm afraid that there's almost no way to detect it directly. It's by default a version dependent features. For example, IE 6 on Windows XP SP2 and IE 7 now allow you to specify 128-bit strong encryption for use outside US. Previous versions of IE such as IE 5.0 and IE 5.5, can't use strong encryption outside US. They're only allowed to use weaker encryption than 128-bit. This is the link to MS KB about 128bit encryption on IE: http://support.microsoft.com/kb/195833[^] best regards, Eriawan
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I'm afraid that there's almost no way to detect it directly. It's by default a version dependent features. For example, IE 6 on Windows XP SP2 and IE 7 now allow you to specify 128-bit strong encryption for use outside US. Previous versions of IE such as IE 5.0 and IE 5.5, can't use strong encryption outside US. They're only allowed to use weaker encryption than 128-bit. This is the link to MS KB about 128bit encryption on IE: http://support.microsoft.com/kb/195833[^] best regards, Eriawan
Thanks. I was able to solve this problem by querying server variable "HTTPS_KEYSIZE" within my own ISAPI Filter.