On 2017-03-22 17:45, kef wrote:
> voice / video nera? Tik zinutes?

Voice yra, bet veikia ne kaip phone call, o voicemail principu. Čia 
daiktas saugumui uždrožtas, o ne fintikliuškom :) Jei šifruotum realiu 
laiku audio ar net video srautą, tai liktum negausiai patenkintas dėl 
greit nustipusio akumo ar trukčiojančio vaizdo.

Strength of the encryption: The asymmetric ECC based encryption used by 
Threema has a strength of 255 bits. Accordingto a NIST estimate (page 
64), this corresponds at least with the strength provided by 2048 bit 
RSA. ECDH on Curve25519 is used in conjunction with a hash function and 
a random nonce to derive a unique 256 bit symmetric key for each 
message, and the stream cipher XSalsa20 is then used to encrypt the 
message. A 128 bit message authentication code (MAC) is also added to 
each message to detect manipulations/forgeries.