Digital Signature using ASP

[PaperDog]

My client needs to authenticate an online ASP NET generated form, which will contain content that must be signed ( "checked" ) by department heads, to indicate approval or dissaproval .

The problem is...We don't know how to prove or authenticate the siganature of each of the department heads.

Can you point me to appropriate info/ links, algotithms etc that show us how to create authenticated signatures / keys etc for this type of activity?

Thanks.


PaperDog

 

[oldbear]

There are two white papers here:

http://www.charteris.com/publications/whitepapers/default.asp

The first is 'Cryptographic Algorithms – Guidance for Developers', and gives details of the algorithms, and also how to use CAPICOM to perform the signing.

The second, 'Security Solutions Offered by Visual Studio .Net 2005 (Whidbey)' shows how .Net 2.0 can be used for XML Digital Signatures.

A problem for you is how to perform the signing on the client. Possibly an ActiveX control or Java applet, but this would be very complex.

If your users are using Windows (XP, 2000, 2003) you could think about using a Smart Client - look up 'ClickOnce' on MSDN.

Hope this helps

Chris Seary