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TARSNAP-KEYREGEN(1)    DragonFly General Commands Manual   TARSNAP-KEYREGEN(1)


NAME

     tarsnap-keyregen - generate a key file for use with tarsnap-recrypt(1)


SYNOPSIS

     tarsnap-keyregen --keyfile key-file --oldkey old-key-file
                      --user user-name --machine machine-name [--passphrased]
                      [--passphrase-mem maxmem]


DESCRIPTION

     tarsnap-keyregen generates a set of cryptographic keys which are
     compatible with an existing set of cryptographic keys, registers with the
     tarsnap server, and writes a key file for use with tarsnap-recrypt(1) and
     tarsnap(1).  The term "compatible" here means that it is possible to re-
     encrypt archives stored with the first set of keys to be stored with the
     second set of keys.

     The --keyfile, --user, --machine, and --oldkey parameters are all
     required.

     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.

DragonFly 6.5-DEVELOPMENT      January 23, 2011      DragonFly 6.5-DEVELOPMENT

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