Re: Encrypting Messages

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"Brian Tillman" <tillman1952@xxxxxxxxx> wrote in message
news:eHxfbc1IGHA.1028@xxxxxxxxxxxxxxxxxxxxxxx
> Rome <coolromeo29@xxxxxxxxx> wrote:
>
> > I recently purchased a Email Certificate from Verisign for Encryption
> > and Digitally Signing My email and it works fine with everybody who
> > has outlook. Why is it that i cant send an encrypted email with
> > someone thats using yahoo? i was messing with sending myself an
> > encrypted email, and got it to work an hour later. why is it that in
> > order for me to send an encrypted message to someone i have to have
> > their certificated stored in my adress book?
>
> Because when you send an encrypted message, you're not using your
> certificate to encrypt it. They have to have a public key in order for
you
> to encrypt a message to them. You encrypt using the recipient's
> certificate's public key and they decrypt using their private key. The
> encrypt and send you a message using your public key and you descript it
> with your private key. In an exchange of encrypted messages, both sides
> must have certificates because both sides need public/private keys.

Both sides need an S/MIME enabled mail client as well.
This is rather hard with Yahoo,
unless you use a desktop mail client
and not the original webmail interface.

Vizvary Istvan III
http://www.cryptigo.com



.

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