private; mine

(formal) first-person singular pronoun: I, me

中々: very, quite, considerably, rather, by no means (with negative verb)

the daytime, during the day / a half day, half of a day

inside

very, quite, considerably, rather / by no means (with negative verb)

(cryptography) key exchange - an exchange of peers' keys at initialization phase of connection.

(cryptography) public key

(cryptography) secret key

(Internet slang) protected account (on social media, especially Twitter and Instagram)