sign and encrypt

[Joe Smith]

<vedaal at hush.com> wrote in message 
news:20060606145121.206BADA835__458.100174046372$1149609881$gmane$org at mailserver7.hushmail.com...
> it doesn't deal with a potentially more difficult situation :
>
> proving you signed something,
> to someone whom you would prefer it 'not' proved to  ;-((

Encrypt and then sign does not have this problem, unless the other person is 
willing to sacrifice his/her private key.
To avoid leaking information via the signature Encrypt-sign-encrypt could 
work.