RE: integrity and mail encryption

[b.hines () comcast net]

Adrian,

Exactly, but I believe you do however need to generate a certificate public/private key pair to associate with a unique 
mail account.  By using the senders public key, (or signing the mail), the recipient can encrypt a return mail with 
thier own private key and the sender's public key.  The original sender can then decrypt the mail (given they have the 
original recipients public key from a previously signed mail).  The key pair works on the premise that the private key 
is unique to the owner and not shared and the public key of the pair is a back door to allow a reverse hash of a 
private key encryption in timely manner.  By using a Diffie Helman key exchange with an associated private key of say 
256 bit AES or 128 bit 3DES encryption the message is very secure, this method provides non-repudiation 
(Accountability) and Mail signing hash (Integrity) and strong private key encryption (Confidentiality).

Bob


>  
> Hi Juan,
>
> You don't need any free tool. Outlook already knows to sign (for integrity)
> and encrypt the messages according with S/MIME standard. As far as I know
> you, Yahoo does not know S/MIME. If your message is only signed with
> detached signature (like Outlook does), you can view' it in Yahoo.
>
> More details you can find on this link
> www.dartmouth.edu/~deploypki/materials/modules/using/smime/outlook.doc.
>
> Security Product Team Leader
> Adrian Floarea, CISA
> Bucharest, Romania
> Email: adrian.floarea () uti ro
>
>
> -----Original Message-----
> From: Juan B [mailto:juanbabi () yahoo com] 
> Sent: Saturday, October 29, 2005 11:52 PM
> To: security basics
> Subject: integrity and mail encryption
>
> Hi,
>
> I want to encrypt and check integrity of mail between two outlook clients,
> does anyone knows about such a free tool?
>
> and what doing the same between an outlook client and web mail like yahoo?
> is it possible?
>
> Thanks,
>
> Juan
>
>
>               
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