> The audio stream is encrypted with the SRTP protocol, with DTLS-SRTP being used for the key exchange. The certificates used for the DTLS session are cryptographically linked to the keys used for Threema’s end-to-end encryption by means of including the certificate fingerprints in signaling messages. DTLS version 1.2 is enforced.
> The audio stream is encrypted with the SRTP protocol, with DTLS-SRTP being used for the key exchange. The certificates used for the DTLS session are cryptographically linked to the keys used for Threema’s end-to-end encryption by means of including the certificate fingerprints in signaling messages. DTLS version 1.2 is enforced.