tarsnap-keygen – generate a key file for use with tarsnap(1)
tarsnap-keygen --keyfile key-file --user user-name --machine machine-name
[--passphrased] [--passphrase-mem maxmem]
tarsnap-keygen generates cryptographic keys, registers with the tarsnap
server, and writes a key file for use with tarsnap(1).
The --keyfile key-file option specifies the name of the file in which to
write the newly-generated keys. The --user user-name option specifies
the name (i.e. email address) of the Tarsnap account. The --machine
machine-name option specifies a name which will be displayed in
accounting reports so that you can see how much data each machine is
If the --passphrased option is specified, the user will be prompted to
enter a passphrase (twice) to be used to encrypt the key file.
If the --passphrase-mem maxmem option is specified, a maximum of maxmem
bytes of RAM will be used in the scrypt key derivation function to
encrypt the key file; it may be necessary to set this option if a key
file is being generated on a system with far more RAM than the system on
which the key file will be used.
If the --passphrase-time maxtime option is specified, a maximum of
approximately maxtime seconds will be used in the scrypt key derivation
function to encrypt the key file.
The --version option prints the version number of tarsnap-keygen, then