Difference between revisions of "Np1sec/algebraic"
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(→Send) |
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|align="right"| Append the hash of the session digest up to parent of current message | |align="right"| Append the hash of the session digest up to parent of current message | ||
− | |align="center"|<math> m \leftarrow (m, Digest( | + | |align="center"|<math> m \leftarrow (m, Digest(parent(m)), parent\_id) </math> |
|- | |- | ||
|align="right"| Sign the message | |align="right"| Sign the message | ||
Line 188: | Line 188: | ||
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|align="right"|Encrypt | |align="right"|Encrypt | ||
− | |align="center"|<math>e \leftarrow | + | |align="center"|<math>e \leftarrow Enc_{k_{sid}}(m)</math> |
|- | |- | ||
|align="right"| Broadcast the message | |align="right"| Broadcast the message |
Revision as of 06:47, 11 September 2014
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 | ![]() |
decrypt messagen | ![]() |
Verify session id and hash | Failed to parse (syntax error): \sigma \leftarrow sid_i == sid_{rec} & h == Digest(parent\_id) |
Update key share or session key | ![]() |
return m | ![]() |