Verify a certificate

def verifyCertificate(self, name):
        """Verify a certificate
        """
        certPath = os.path.join(self.basePath, self.DIR_CERTS, '%s.cert.pem' % name)
        if not os.path.isfile(certPath):
            raise ValueError('Certificate [%s] not found' % certPath)
        if subprocess.call([ 'openssl', 'x509', '-noout', '-text', '-in', certPath ]) != 0:
            raise ValueError('Failed to verify the certificate')