Twisted Conch

• Homepage: https://twisted.org/
• First release: 2002-07-07
• Latest release: 2024.7.0 (2024-08-08)
• Version history: https://github.com/twisted/twisted/blob/trunk/NEWS.rst
• Source repository: https://github.com/twisted/twisted
• License: MIT
• Client: true
• Server: true

Remarks

• Designed as a Python library.
• Cryptograpy provided by cryptography library, that provides bindings for OpenSSL or LibreSSL
• SFTP client and server.
• Source code and documentation contains example for creating a client and a server.
• Wikipedia

Supported protocols

Ciphers: 3des-cbc, 3des-ctr, blowfish-cbc, blowfish-ctr, cast128-cbc, cast128-ctr, aes128-cbc, aes192-ctr, aes256-cbc, aes128-ctr, aes192-cbc, aes256-ctr, none

Compression formats: zlib, none

Hostkey formats: ssh-rsa, ssh-dss, ecdsa-sha2-nistp256, ecdsa-sha2-nistp384, ecdsa-sha2-nistp521, ssh-ed25519, rsa-sha2-256, rsa-sha2-512

Key exchange protocols: curve25519-sha256, curve25519-sha256@libssh.org, diffie-hellman-group-exchange-sha256, diffie-hellman-group-exchange-sha1, diffie-hellman-group14-sha1, ecdh-sha2-nistp256, ecdh-sha2-nistp384, ecdh-sha2-nistp521, ext-info-c, ext-info-s

Message authentication codes (MACs): hmac-md5, hmac-sha1, hmac-sha2-256, hmac-sha2-384, hmac-sha2-512, none

User authentication methods: publickey, password, keyboard-interactive

Protocol extensions: server-sig-algs