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dropbearkey — Generate SSH keys in Dropbear format. More information: <https://manned.org/dropbearkey>.

Submitted by: @import:tldr-pages·Mar 2, 2026·

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keyscommanddropbearkeydropbearformatsshcligenerate

linux

Problem

How to use the dropbearkey command: Generate SSH keys in Dropbear format. More information: <https://manned.org/dropbearkey>.

Solution

dropbearkey — Generate SSH keys in Dropbear format. More information: <https://manned.org/dropbearkey>.

Generate an SSH key of [t]ype ed25519 and write it to key [f]ile:

dropbearkey -t {{ed25519}} -f {{path/to/key_file}}

Generate an SSH key of [t]ype ecdsa and write it to key [f]ile:

dropbearkey -t {{ecdsa}} -f {{path/to/key_file}}

Generate an SSH key of [t]ype RSA with 4096-bit key [s]ize and write it to key [f]ile:

dropbearkey -t {{rsa}} -s {{4096}} -f {{path/to/key_file}}

Print the private key fingerprint and public key in key [f]ile:

dropbearkey -y -f {{path/to/key_file}}

Code Snippets

Generate an SSH key of [t]ype ed25519 and write it to key [f]ile

dropbearkey -t {{ed25519}} -f {{path/to/key_file}}

Generate an SSH key of [t]ype ecdsa and write it to key [f]ile

dropbearkey -t {{ecdsa}} -f {{path/to/key_file}}

Generate an SSH key of [t]ype RSA with 4096-bit key [s]ize and write it to key [f]ile

dropbearkey -t {{rsa}} -s {{4096}} -f {{path/to/key_file}}

Print the private key fingerprint and public key in key [f]ile

dropbearkey -y -f {{path/to/key_file}}

Context

tldr-pages: linux/dropbearkey

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