On Fri, Mar 17, 2006, michael Dorrian wrote:

>   1. Can a CA signed by the root CA act as a trusted CA itself?.

Provided the root CA permits this...

>   2. How does the certificate chain stop another client who has a
>   certificate signed by the same root authority as you acting as a trusted
>   CA. I know the ip addresses will be different but maybe there is a way
>   around that too.
> 

Certificates contain extensions. One extension called basicConstraints
indicates (among other things) whether the certficate is a valid CA. An end
entity (for example server certificates) cannot be used as a CA because this
extension forbids it and any software validating the chain will reject it.

Steve.
--
Dr Stephen N. Henson. Email, S/MIME and PGP keys: see homepage
OpenSSL project core developer and freelance consultant.
Funding needed! Details on homepage.
Homepage: http://www.drh-consultancy.demon.co.uk
______________________________________________________________________
OpenSSL Project                                 http://www.openssl.org
User Support Mailing List                    openssl-users@openssl.org
Automated List Manager                           [EMAIL PROTECTED]

Reply via email to