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https://github.com/koviubi56/p2sn
Peer to peer socket network
https://github.com/koviubi56/p2sn
python python-3 python-3-10 python-3-8 python-3-9 python-library python3 python3-library python38 python39
Last synced: 2 months ago
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Peer to peer socket network
- Host: GitHub
- URL: https://github.com/koviubi56/p2sn
- Owner: koviubi56
- License: lgpl-3.0
- Created: 2022-01-08T19:54:52.000Z (almost 3 years ago)
- Default Branch: main
- Last Pushed: 2023-02-28T15:55:44.000Z (almost 2 years ago)
- Last Synced: 2023-03-05T21:21:19.678Z (almost 2 years ago)
- Topics: python, python-3, python-3-10, python-3-8, python-3-9, python-library, python3, python3-library, python38, python39
- Language: Python
- Homepage:
- Size: 177 KB
- Stars: 0
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- Changelog: CHANGELOG.md
- Contributing: CONTRIBUTING.md
- License: LICENSE
- Code of conduct: CODE_OF_CONDUCT.md
- Security: SECURITY.md
Awesome Lists containing this project
README
# p2sn
# DEPRECATED - Use anything else
[](https://github.com/koviubi56/p2sn/actions/workflows/codeql-analysis.yml)
[](https://www.codefactor.io/repository/github/koviubi56/p2sn)
[](https://www.codacy.com/gh/koviubi56/p2sn/dashboard?utm_source=github.com&utm_medium=referral&utm_content=koviubi56/p2sn&utm_campaign=Badge_Grade)
[](https://results.pre-commit.ci/latest/github/koviubi56/p2sn/main)
[](https://app.travis-ci.com/koviubi56/p2sn)
P2SN is a Peer to Peer, encrypted Socket Network written in python.
P2SN uses asymmetric/public key encription ([RSA](https://pypi.org/project/rsa/)) for all\* communication between the two peers.
P2SN uses Base64 (with the '+' and '/' characters) to encode and decode everything\*\*.
\*: Everything, except PUBKEY, pubkey, ERRORKEY, and NULL.
\*\*: Everything, except PUBKEY, ERRORKEY, and NULL
## How does it work
You can read the official P2SN standard in the [`standard.md` file](standard.md).
### Key exchange
_[Can't see it?](https://gist.github.com/koviubi56/aaa2309ce82123b97e29a70354298b41)_
```mermaid
sequenceDiagram
participant SERVER
participant CLIENT
CLIENT->>SERVER: What's your public key?
SERVER->>CLIENT: It's 12642607...
CLIENT->>SERVER: [KEYCHECK]
SERVER->>CLIENT: What's your public key?
CLIENT->>SERVER: It's 12642607...
SERVER->>CLIENT: [KEYCHECK]
```
_b"..."_ means a bytes string.
_\x04_ marks the end of the message, [ASCII code 4](https://theasciicode.com.ar/ascii-control-characters/eot-end-of-transmission-diamonds-card-suit-ascii-code-4.html).
_[KEYCHECK]_ is simply used for checking if the peer received the right key correctly. The bytes b"P2SN:KEYCHECK" are encrypted.
_[ERRORKEY]_ is b"P2SN:ERRORKEY"
The client and the server must have a public, and a private RSA key. Minimum recommended keysize: 1024 bits.
- Client connects to server.
- Client sends b"P2SN:PUBKEY\x04"
- Server sends its public key saved with [pkcs1](https://en.wikipedia.org/wiki/PKCS_1) [PEM](https://en.wikipedia.org/wiki/Privacy-Enhanced_Mail) encoded with Base64 + b"\x04"
- Client sends encrypted [KEYCHECK] encoded with Base64 + b"\x04"
- If error happens, server replies with [ERRORKEY] + b"\x04"
- Server sends b"P2SN:PUBKEY\x04"
- Client sends its public key saved with [pkcs1](https://en.wikipedia.org/wiki/PKCS_1) [PEM](https://en.wikipedia.org/wiki/Privacy-Enhanced_Mail) encoded with Base64 + b"\x04"
- Server sends encrypted [KEYCHECK]
- If error happens, client does nothing.
### Communicating
The client must be initialized. The client is initialized if its connected to the server, and the key exchange successfully happened (see above).
- Client sends message encrypted with the server's public key, encoded with Base64 + b"\x04"
- Server replies with message encrypted with the client's public key, encoded with Base64 + b"\x04"