The Internet of Broken Protocols: Showcase #9
(Joint work with Sophie Schmieg, but mistakes are mine alone)
Nobody remembers why, but poor Bob was arrested and is in jail. He wants to send Alice a secret message. Wilson cá cược thể thao bet365_cách nạp tiền vào bet365_ đăng ký bet365 warden, however, wants to read and censor messages he doesn't like.
To compromise, everybody agrees to use cá cược thể thao bet365_cách nạp tiền vào bet365_ đăng ký bet365 following hybrid encryption protocol:
1/ Bob obtains Alice's public key and Wilson's public key.
2/ Bob symmetrically encrypts his message with a randomly generated message key K.
3/ Bob wraps K under Alice's public key.
4/ Bob wraps K under Wilson's public key.
5/ The final message is a concatenation of 2/, 3/ and 4/.
Wilson can decrypt, and drop cá cược thể thao bet365_cách nạp tiền vào bet365_ đăng ký bet365 message if he doesn't like it. Ocá cược thể thao bet365_cách nạp tiền vào bet365_ đăng ký bet365rwise he forwards cá cược thể thao bet365_cách nạp tiền vào bet365_ đăng ký bet365 encrypted message to Alice. Bob doesn't have any privacy w.r.t Wilson, but he still can maintain his privacy w.r.t cá cược thể thao bet365_cách nạp tiền vào bet365_ đăng ký bet365 rest of cá cược thể thao bet365_cách nạp tiền vào bet365_ đăng ký bet365 world.
There are two implementations of cá cược thể thao bet365_cách nạp tiền vào bet365_ đăng ký bet365 protocol:
1/ DJB-certified
- symmetric key encryption in step 2/ is ChaCha20Poly1305 with a ran…
Nobody remembers why, but poor Bob was arrested and is in jail. He wants to send Alice a secret message. Wilson cá cược thể thao bet365_cách nạp tiền vào bet365_ đăng ký bet365 warden, however, wants to read and censor messages he doesn't like.
To compromise, everybody agrees to use cá cược thể thao bet365_cách nạp tiền vào bet365_ đăng ký bet365 following hybrid encryption protocol:
1/ Bob obtains Alice's public key and Wilson's public key.
2/ Bob symmetrically encrypts his message with a randomly generated message key K.
3/ Bob wraps K under Alice's public key.
4/ Bob wraps K under Wilson's public key.
5/ The final message is a concatenation of 2/, 3/ and 4/.
Wilson can decrypt, and drop cá cược thể thao bet365_cách nạp tiền vào bet365_ đăng ký bet365 message if he doesn't like it. Ocá cược thể thao bet365_cách nạp tiền vào bet365_ đăng ký bet365rwise he forwards cá cược thể thao bet365_cách nạp tiền vào bet365_ đăng ký bet365 encrypted message to Alice. Bob doesn't have any privacy w.r.t Wilson, but he still can maintain his privacy w.r.t cá cược thể thao bet365_cách nạp tiền vào bet365_ đăng ký bet365 rest of cá cược thể thao bet365_cách nạp tiền vào bet365_ đăng ký bet365 world.
There are two implementations of cá cược thể thao bet365_cách nạp tiền vào bet365_ đăng ký bet365 protocol:
1/ DJB-certified
- symmetric key encryption in step 2/ is ChaCha20Poly1305 with a ran…
