Dropbear

• Homepage: https://matt.ucc.asn.au/dropbear/dropbear.html
• First release: 2003-04-06
• Latest release: 2024.85 (2024-04-25)
• Version history: https://matt.ucc.asn.au/dropbear/CHANGES
• Source repository: https://github.com/mkj/dropbear
• License: MIT style
• Client: true
• Server: true

Remarks

• Server and client for POSIX-based platforms.
• Wikipedia

Supported protocols

Ciphers: aes128-ctr, aes256-ctr, chacha20-poly1305@openssh.com

Compression formats: zlib@openssh.com, zlib, none

Hostkey formats: ecdsa-sha2-nistp256, ecdsa-sha2-nistp384, ecdsa-sha2-nistp521, ssh-rsa, rsa-sha2-256, ssh-ed25519, sk-ssh-ed25519@openssh.com, sk-ecdsa-sha2-nistp256@openssh.com

Key exchange protocols: curve25519-sha256, curve25519-sha256@libssh.org, ecdh-sha2-nistp521, ecdh-sha2-nistp384, ecdh-sha2-nistp256, diffie-hellman-group14-sha1, diffie-hellman-group14-sha256, kexguess2@matt.ucc.asn.au, ext-info-c, kex-strict-c-v00@openssh.com, kex-strict-s-v00@openssh.com

Message authentication codes (MACs): hmac-sha1, hmac-sha2-256

User authentication methods: publickey, password, keyboard-interactive

Protocol extensions: server-sig-algs