[Cryptography] Elliptic curve question

[Phillip Hallam-Baker]

On Tue, Oct 8, 2013 at 4:14 PM, James A. Donald <jamesd at echeque.com> wrote:

>  On 2013-10-08 03:14, Phillip Hallam-Baker wrote:
>
>
> Are you planning to publish your signing key or your decryption key?
>
>  Use of a key for one makes the other incompatible.�
>
>
> Incorrect.  One's public key is always an elliptic point, one's private
> key is always a number.
>
> Thus there is no reason in principle why one cannot use the same key (a
> number) for signing the messages you send, and decrypting the messages you
> receive.
>

 The original author was proposing to use the same key for encryption and
signature which is a rather bad idea.



-- 
Website: http://hallambaker.com/
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