Creates an instance of X509CertificatePair. At least one of
the pair must be non-null.
@param forward The forward component of the certificate pair
which represents a certificate issued to this CA by other CAs.
@param reverse The reverse component of the certificate pair
which represents a certificate issued by this CA to other CAs.
@throws CertificateException If an exception occurs.
Creates an instance of X509CertificatePair. At least one of the pair must be non-null.
@param forward The forward component of the certificate pair which represents a certificate issued to this CA by other CAs. @param reverse The reverse component of the certificate pair which represents a certificate issued by this CA to other CAs. @throws CertificateException If an exception occurs.