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583f4e059dd21f1d95e8d293ef20a46df1853c39
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59 Commits

Author SHA1 Message Date
Evgeny
583f4e059d update RFCs (#1730) 
* update RFCs

* update

* update overview

* update terminology

* original language in threat model

---------

Co-authored-by: Evgeny @ SimpleX Chat <259188159+evgeny-simplex@users.noreply.github.com>
 2026-03-09 23:35:41 +00:00
Evgeny @ SimpleX Chat
3c5752383d update protocol docs 2026-03-09 16:29:05 +00:00
Evgeny @ SimpleX Chat
8518f6087b docs: agent threat model 2026-03-07 15:47:46 +00:00
Evgeny
84e8b72ca3 docs: update protocol (#1705) 2026-01-27 21:21:54 +00:00
Evgeny Poberezkin
7b6c86c6c1 docs: correction 2024-10-14 08:32:19 +01:00
Evgeny
7dcac19a67 xrcp: session encryption with forward secrecy (#1328) 
* xrcp: session encryption with forward secrecy

* update doc

* accept keys as parameters

* docs: counter

* spec corrections
 2024-09-24 09:22:26 +01:00
Evgeny Poberezkin
896b2425a4 xrcp: use SHA3-256 in hybrid key agreement (#1302) 
This reverts commit 62133ceb24.
 2024-09-11 19:32:40 +01:00
Evgeny Poberezkin
d47c099ac9 docs: update protocol specifications (#1204) 
* docs: update protocol specifications

* update SMP protocol (WIP)

* add proxy protocol commands and responses, amend envelope sizes in SMP protocol

* docs: update XFTP protocol (#1205)

* docs: update XFTP protocol

* commands

* fix table of contents, move sections

* add about ids

* download encryption

* qualities

* diagram

* crypto

* sending file diagram

* fix svg

* receiving file diagram

* update commands

* update handshake

* Add updated XRCP (#1207)

* add XRCP protocol

* add ToC

* update

* update

---------

Co-authored-by: Evgeny Poberezkin <2769109+epoberezkin@users.noreply.github.com>

* add XFTP handshake description

* update agent protocol

* fast duplex connection in agent protocol

* update agent protocol

* update overview

* typos

* queue rotation, agent API, updates

* push notifications specification

* add XRCP threat model

* XFTP threat model

* update PQDR

* agent protocol end-to-end encryption

* versions

* remove TOC details

* update

---------

Co-authored-by: spaced4ndy <8711996+spaced4ndy@users.noreply.github.com>
Co-authored-by: Alexander Bondarenko <486682+dpwiz@users.noreply.github.com>
 2024-06-23 22:53:45 +01:00
Evgeny Poberezkin
17f64e1565 docs: URI schemes (#958) 2024-01-12 17:21:57 +00:00
Evgeny Poberezkin
5f750a6783 docs: amend SMP protocol transmission encoding (#843) 
* docs: amend SMP protocol transmission encoding

* base64 encoding

* remove "optional"
 2023-10-25 17:52:02 +01:00
Evgeny Poberezkin
a302b601ea docs: comment in the protocol doc 2023-08-21 17:41:30 +01:00
Evgeny Poberezkin
a6f401041a SMP protocol v4: batching multiple server commands/responses in a transport block (#470) 
* batch server commands in one transport block

* subscribe to multiple queues using batched commands

* agent method to subscribe to multiple queues using batched commands

* refactor

* test for batched subscriptions

* delete part of connections in batched test

* add resubscribeConnections

* remove comment

* update SMP protocol doc
 2022-07-17 10:10:38 +01:00
Evgeny Poberezkin
9c1b43791c SMP v3: encrypt message timestamp and flags together with the body between server and recipient (#457) 
* SMP v3: encrypt message timestamp and flags together with the body between server and recipient

* v3 tests

* update protocol doc

* add test for max size message

* delay in notifications test

* simplify v3

* encrypt server message to the recipient when sent

* refactor

* exit on error restoring the messages

* refactor, increase test timeout

* style

* add prints to the test

* remove error from unsafeMaxLenBS

* update protocol

* lint, improve test, change func param
 2022-07-05 21:08:05 +01:00
JRoberts
ef4d4c9e16 ntf: remove notification subscription (#417) 2022-06-22 20:32:32 +04:00
Evgeny Poberezkin
c1348aa54f SMP connection handshake v2 (#390) 
* SMP connection handshake v2

* hadshake v2 [mostly] works

* all tests pass, some race conditions remain

* fix build

* fix race conditions, send CON after all HELLOs in duplexHandshake mode

* add comments

* comment

* add comments
 2022-06-09 13:47:07 +01:00
JRoberts
c2ec691a46 ntf subscription diagram (#377) 2022-05-31 15:40:43 +04:00
Evgeny Poberezkin
d31958855f ntf server implementation, updated ntf protocol, ntf client based on refactored protocol client, bare-bones SMP agent to manage ntf connections (to connect to ntf server) (#338) 
* process ntf server commands

* when subscription is re-created and it was ENDed, resubscribe to SMP

* SMPClientAgent draft

* SMPClientAgent: remove double tracking of subscriptions

* subscriber frame

* PING error now throws error to restart SMPClient for more reliable re-connection (#342)

* increase TCP timeout to 5 sec

* add pragmas and vacuum db (#343)

* vacuum in each connection to enable auto-vacuum (#344)

* update protocol, token verification

* refactor SMPClient to ProtocoClient, to use with notification server protocol

* notification server client, managing notification clients in the agent

* stub for push payload

Co-authored-by: JRoberts <8711996+jr-simplex@users.noreply.github.com>
 2022-04-02 16:14:19 +01:00
Evgeny Poberezkin
f466fa76e5 notifications: protocol, server (#335) 
* notifications: protocol

* update protocol to include subscription ID and DH public key

* update protocol, started server

* add notification server subscription DH key

* use the same command type in notifications protocol, protocol parsing, server frame

* remove empty files
 2022-03-27 08:36:00 +01:00
Evgeny Poberezkin
f060914ab8 notifications server rfc/schema (#332) 
* notifications server rfc/schema

* update schema/protocol
 2022-03-22 16:53:01 +00:00
Efim Poberezkin
ac899a67c4 support TLS 1.3 (#300) 2022-01-18 18:59:02 +04:00
Evgeny Poberezkin
bfa4911217 improve message error handling (#286) 
* message envelope sizes and protocol doc corrections

* change error handling in message delivery loop
 2022-01-12 10:36:22 +00:00
Evgeny Poberezkin
5f20f0124a correction to E2E encrypted (double ratchet) envelope size 2022-01-11 22:08:37 +00:00
Evgeny Poberezkin
657c9b1b37 reduce SMP envelope sizes (#284) 2022-01-11 21:01:21 +00:00
Efim Poberezkin
5e57c5dfd7 rename remaining occurrences of connection alias into connection id (#265) 2022-01-07 15:37:40 +04:00
Evgeny Poberezkin
488398df9f change message envelopes and encoding, unify message delivery (#252) 
* types and encodings for double ratchet integration

* upgrade stack resolver

* type classes for version agreement, encode/decode connection request links and E2E params with versioning

* encode/decode client parameters (version and DH key) in SMP queue URI using query string parameters

* restore support of the current SMP queue URI format

* update AMessage to only send queues in REPLY message (not the full connection request)

* new agent message evnvelopes (tests fail)

* new message envelopes - tests pass

* store fully encrypted messages before sending

* unify message delivery via DB queue (excluding confirmation and invitation)

* remove activateSecuredQueue

* linter hints

* remove comment

* export order

* save rachet-encrypted message, not per-queue encrypted

* delete message after it is accepted by the server, reduce message delivery interval for the tests

Co-authored-by: Efim Poberezkin <8711996+efim-poberezkin@users.noreply.github.com>
 2022-01-05 19:52:37 +00:00
Evgeny Poberezkin
4a73a7ecd4 remove public header from all messages, fix envelope sizes (#251) 
* fix envelope sizes

* only send sender DH pub key for per-queue E2E with confirmation message
 2022-01-03 14:33:30 +00:00
Evgeny Poberezkin
83d085cadc amend SMP protocol doc (#232) 
* amend SMP protocol doc

* Update protocol/simplex-messaging.md

Co-authored-by: Efim Poberezkin <8711996+efim-poberezkin@users.noreply.github.com>

* Update protocol/simplex-messaging.md

Co-authored-by: Efim Poberezkin <8711996+efim-poberezkin@users.noreply.github.com>

* Update protocol/simplex-messaging.md

* Update protocol/simplex-messaging.md

Co-authored-by: Efim Poberezkin <8711996+efim-poberezkin@users.noreply.github.com>
 2022-01-02 22:48:01 +00:00
Evgeny Poberezkin
f314ff1bb6 add links to overview (#249) 2022-01-01 14:22:43 +00:00
Evgeny Poberezkin
1737686c1e update overview (#233) 
* update overview

* network/framework -> platform

* fix links

* corrections

* corrections

* correction

* correction

* corrections

* update acknowledgements

* remove old overview.md

* update cyptographic primitives, remove acknoledgement

Co-authored-by: Efim Poberezkin <8711996+efim-poberezkin@users.noreply.github.com>
 2022-01-01 13:59:03 +00:00
Evgeny Poberezkin
5e29e3698e binary SMP protocol encoding, split Command type to two types (#245) 
* binary SMP protocol encoding (server tests fail)

* use 1 byte for bytestring length when encoding/decoding

* Encoding class, binary tags

* update server tests

* negotiate SMP version in client/server handshake

* add version columns to queues and connections

* split parsing SMP client commands and server responses to different functions

* check uniqueness of protocol tags

* split client commands and server responses/messages to separate types

* update types in SMP client

* remove pattern synonyms for SMP errors

* simplify getHandshake

* update SMP protocol encoding in protocol spec

* encode time as a number of seconds (64-bit integer) since epoch
 2022-01-01 13:10:19 +00:00
Evgeny Poberezkin
73cad5a6c4 simple per-queue e2e encryption with NaCl crypto_box (#242) 
* simple per-queue e2e encryption with NaCl crypto_box

* add e2e keys and DH secrets to schema

* agree and save shared DH secret per queue (not used yet)

* protocol changes for uniform padding and message part lengths

* correct message structure diagrams

* make per-queue E2E encryption non-optional

* refactor crypto keys

* use NaCl crypto_box for per-queue E2E encryption, remove RSA keys from queues

* remove RSA support

* merge migration with E2E DH keys

* clean up

* remove unused methods

* parsing/serializing agent messages

* remove sender timestamp from DB and code

* clean up

* slean up

* s/SMPConfMsg/SMPConfirmation/

* serializeAgentMessage = serializeClientMessage . agentToClientMsg

* simplify error handling

* update protocol docs
 2021-12-29 14:27:10 +00:00
Evgeny Poberezkin
f9f1b8f355 new overview (#235) 2021-12-21 07:46:22 +00:00
Evgeny Poberezkin
f154f7ee3a overview doc updates (#216) 
* overview changes

* correction

* protocol docs changes

* include reviewer comments in the doc

* encryption scheme for the recipient traffic

* TLS cipher suite
 2021-12-20 12:07:31 +00:00
Evgeny Poberezkin
323fb1f03c remove SMP server signing responses (#226) 
* remove SMP server signing responses

* keep only one session ID
 2021-12-16 07:15:45 +00:00
Evgeny Poberezkin
cf3d0dfdc3 Transaction fields for size, session IDs, refactor (#222) 
* add SMP session IDs/tls-unique to transmission

* refactor SMP transmissions: precise transmission types in server & client

* use correct session IDs

* remove TSession
 2021-12-15 08:06:34 +00:00
Evgeny Poberezkin
f6991539a2 add server signature keys and DH keys for server->recipient msg bodis to SMP commands (server store log and agent tests are skipped) 2021-12-12 12:22:44 +00:00
Evgeny Poberezkin
52eef2d7c7 Merge branch 'master' into v5 2021-12-10 11:52:08 +00:00
Evgeny Poberezkin
d5310c1c6f SimpleX protocols and network overview (#215) 2021-12-06 12:28:11 +00:00
Evgeny Poberezkin
58758e0572 Merge branch 'master' into v5 2021-12-04 21:08:38 +00:00
Evgeny Poberezkin
3e226fc3f2 add CONF/LET for invitations, use REQ/ACPT only with contact connections (#212) 2021-12-04 21:08:02 +00:00
Evgeny Poberezkin
b116408ec3 Merge branch 'master' into v5 2021-12-04 18:55:23 +00:00
Evgeny Poberezkin
04c65d98da support permanent connection link ("contact") in SMP agent protocols (#143) 
* open/public queue extension for SMP and SMP agent protocols

* add connection mode - invitation or contact

* use ConnectionMode with REQ and ACPT agent notification/command

* parameterize ConnectionRequest with ConnectionMode

* implement Contact connection mode for permanent connection links

* tests for contact connections
 2021-12-04 18:42:08 +00:00
Evgeny Poberezkin
316dc7b320 merge protocol changes from v5 (#211) 2021-12-02 18:42:13 +00:00
Evgeny Poberezkin
bebd1e5fb9 simplex URI request 2021-11-29 23:00:26 +00:00
Evgeny Poberezkin
db509d0311 update protocol docs (#209) 
* update protocol docs

* more protocol corrections

* update connection request syntax

* Update protocol/agent-protocol.md

Co-authored-by: Efim Poberezkin <8711996+efim-poberezkin@users.noreply.github.com>

* Update protocol/agent-protocol.md

Co-authored-by: Efim Poberezkin <8711996+efim-poberezkin@users.noreply.github.com>

* Update protocol/agent-protocol.md

Co-authored-by: Efim Poberezkin <8711996+efim-poberezkin@users.noreply.github.com>

* Update protocol/agent-protocol.md

Co-authored-by: Efim Poberezkin <8711996+efim-poberezkin@users.noreply.github.com>

* Update protocol/simplex-messaging.md

Co-authored-by: Efim Poberezkin <8711996+efim-poberezkin@users.noreply.github.com>

Co-authored-by: Efim Poberezkin <8711996+efim-poberezkin@users.noreply.github.com>
 2021-11-28 21:01:34 +00:00
Evgeny Poberezkin
99b3749890 simplify RSA private key types (#207) 
* simplify RSA private key types

* remove updateSignKey method
 2021-11-28 07:08:47 +00:00
Efim Poberezkin
ab875198ed SMP protocol typo 2021-11-27 02:31:15 +10:00
Evgeny Poberezkin
f3d79ebcda update SMP protocol to include server signature and encryption keys 2021-11-25 17:24:00 +00:00
Evgeny Poberezkin
01e8c232f0 change syntax for queue URI and connection request (#205) 
* change syntax for queue URI and connection request

* separate queue URI into separate section

* correction
 2021-11-22 19:08:19 +00:00
Evgeny Poberezkin
eb7fcae31b update transport protocol to use TLS (#204) 
* update transport protocol to use TLS

* typos

* s/serverKeyHash/serverIdentity/

Co-authored-by: Efim Poberezkin <8711996+efim-poberezkin@users.noreply.github.com>

* Update protocol/simplex-messaging.md

Co-authored-by: Efim Poberezkin <8711996+efim-poberezkin@users.noreply.github.com>

* corrections

Co-authored-by: Efim Poberezkin <8711996+efim-poberezkin@users.noreply.github.com>
 2021-11-22 08:52:39 +00:00