NR with recovery is not in Crypto++. It's patented and I think a better 
alternative would be a pairing-based short signature scheme. But I'm still 
waiting for something even better to be invented. One candidate was a coding 
based scheme, but it turned out to be broken. See 
http://groups.google.com/group/sci.crypt/browse_frm/thread/351ede73af57d6bb/91124598f8a181bd?&hl=en#91124598f8a181bd.

Rabin-Williams with recovery is available as RWSS<PSSR, SHA512>.

----- Original Message ----- 
From: "Jeffrey Walton" <[EMAIL PROTECTED]>
To: "Crypto++" <[EMAIL PROTECTED]>
Sent: Saturday, May 26, 2007 9:28 AM
Subject: Signature Schemes (with Recovery)


>
> Hi Wei,
>
> I want to verify that I have not missed something in the Library. I
> desire to develop metrics using RSA, Rabin, and Nyberg-Rueppel
> Signature Schemes with Recovery. Crtypo++ has RSA. But it appears
> Rabin and Nyberg-Rueppel are not part of the Library. Is this correct?
>
> Jeff
>
> > 



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