25.11.2020 08:48:40

Change of the algorithm for electronic signature of invoices

As part of increasing the security of outgoing messages from CS OTE, a change in the electronic signature, mark and seal used by OTE, a.s., associated with the transition to the SHA-256 algorithm, was implemented on 24 November 2020. The use of the existing SHA-1 algorithm was terminated at that date.

Electronically signed invoices or billing documents can only be verified in a version of the application that supports this algorithm.