The cypher suites in the TLS connection are adapted to the current industry security standard. Only the following cypher suites are authorised for TLS communication to the Swisscom Trust Service systems:
ECDHE-ECDSA-AES256-GCM-SHA384
ECDHE-RSA-AES256-GCM-SHA384
ECDHE-ECDSA-AES128-GCM-SHA256
ECDHE-RSA-AES128-GCM-SHA256
DHE-RSA-AES256-GCM-SHA384
DHE-RSA-AES128-GCM-SHA256
This means that connection calls that rely exclusively on ECDHE-RSA-CHACHA20-POLY1305, for example, will soon be rejected. Our protocols do not indicate that our clients are configured exclusively for these insecure cyphersuites, so we do not expect any restrictions in communication.