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dropbearkey:tldr:7f8f8
The "dropbearkey" command is used to generate SSH (Secure Shell) key pairs using the Dropbear SSH server. This command specifically generates an RSA key with a key size of 4096 bits and saves it to a specified file.
Let's break down the components of the command:
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"dropbearkey": This is the actual command that initiates the key generation process with Dropbear.
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"-t ${rsa}": Specifies the type of key to be generated. In this case, it is RSA. The "${rsa}" refers to a variable value that should be provided, such as "rsa" or "dsa".
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"-s ${4096}": Specifies the key size or length in bits. The "${4096}" refers to a variable value that should be provided, such as "2048" or "4096". In this case, it is set to 4096 bits, which is considered strong and secure.
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"-f ${path-to-key_file}": Specifies the path and filename to which the generated key pair should be saved. The "${path-to-key_file}" refers to a variable value that should be replaced with the actual file path and name you wish to use. For example, "/home/user/.ssh/my_key".
Overall, the command generates an RSA key pair with a key size of 4096 bits and saves it to a specified file. This key pair can then be used for SSH authentication and secure communication.