Np1sec/algebraic
Chatroom Setup
Description | Pseudo-code |
---|---|
Generate ephemeral DH private key of the room initiator | ![]() |
Generate DH key for BD, Triple DH and Signature | ![]() |
Set participant list | ![]() |
Join
Description | Pseudo-code |
---|---|
Generate ephemeral DH private key | ![]() |
Generate DH key for BD, Triple DH and Signature | ![]() |
Broadcast User identity and the DH key | ![]() |
Receive other users' id/key | ![]() |
Compute Session Id | ![]() |
Generate Triple Diffie-Hellman P2P keys | ![]() |
Generate key confirmations | ![]() |
Generate secret shares | ![]() |
Generate public shares | ![]() |
Sign identity, shares | ![]() |
Broadcast key shares and confirmation | ![]() |
Receive other users' key shares and confirmation | ![]() |
Check validity of key confirmation | ![]() |
Check public shares | ![]() |
Check signatures | ![]() |
Recover secret shares | ![]() |
Generate session key | ![]() |
Broadcast session key confirmation | ![]() |
Accept
Description | Pseudo-code |
---|---|
broadcast all user's identities | ![]() |
Receive other users' id/key and update participant list | ![]() |
Compute Session Id | ![]() |
Generate Triple Diffie-Hellman P2P key for the new participant | ![]() |
Generate key confirmations | ![]() |
Generate secret shares | ![]() |
Generate public shares | ![]() |
Sign identity, shares | ![]() |
Broadcast key shares and confirmation | ![]() |
Receive other users' key shares and new users confirmation | ![]() |
Check validity of key confirmation | ![]() |
Check public shares | ![]() |
Check signatures | ![]() |
Recover secret shares | ![]() |
Generate session key | ![]() |
Broadcast session key confirmation | ![]() |
Leave
Description | Pseudo-code |
---|---|
Remove leaving user's id/key and update participant list | ![]() |
Compute Session Id | ![]() |
Generate secret shares | ![]() |
Generate public shares | ![]() |
Sign identity, shares | ![]() |
Broadcast key shares | ![]() |
Receive other users' key shares | ![]() |
Check public shares | ![]() |
Check signatures | ![]() |
Recover secret shares | ![]() |
Generate session key | ![]() |
Broadcast session key confirmation | ![]() |
Send
Description | Pseudo-code |
---|---|
Generate new DH Key or new key share if needed and append | ![]() |
Append the hash of the session digest up to parent of current message | ![]() |
Sign the message | ![]() |
Encrypt | ![]() |
Broadcast the message | ![]() |
Receive
Description | Pseudo-code |
---|---|
check signature | ![]() |
update message block chain | ![]() |
decrypt messagen | ![]() |
Verify session id and hash | ![]() |
Update sender key or share key | ![]() |
if all users' share are received session key | ![]() |
return m | ![]() |