One-way Ping (OWAMP)
The OWAMP specification has now been released as a Standards Track RFC: http://www.rfc-editor.org/rfc/rfc4656.txt.

aespasswd(1)                                                      aespasswd(1)

NAME

       aespasswd - Used to create and manage an AES keyfile.

SYNOPSIS

       aespasswd [-n] [-d] -f keyfile identity

OPTIONS

       -n     Create the keyfile

       -d     Delete given identity from keyfile

       -f keyfile
              Specifies file that holds identity/key pairs

DESCRIPTION

       aespasswd  is  used  to  create and manage files that hold identity/key
       pairs. It is primarily used to manage the bwctld.keys file  for  bwctld
       and the owampd.keys file for owampd.

       If  the  -d  option is not specified, then aespasswd prompts the caller
       for a passphrase. The passphrase is hashed using an internal MD5  algo-
       rithm  to  generate  a key that is then saved in the keyfile associated
       with the given identity. If the given identity already  exists  in  the
       keyfile, the previous key is overwritten with the new one.

       keyfiles  generated  by  aespasswd are formatted for use with BWCTL and
       OWAMP.

KEYFILE FORMAT

       aespasswd generates lines of the format:

       test 54b0c58c7ce9f2a8b551351102ee0938

       An identity, followed by whitespace, followed by a hex encoded  128-bit
       number, that is suitable to be used as a symmetric AES key.

       No  other text is allowed on these lines; however, comment lines may be
       added. Comment lines are any line where the first non-white space char-
       acter is '#'.

EXAMPLES

       aespasswd -f /usr/local/etc/bwctld.keys testuser

              Adds a key for the identity testuser. The user is prompted for a
              passphrase. If the file does not exist, an error message will be
              printed and no action will be taken.

       aespasswd -f /usr/local/etc/bwctld.keys -n testuser

              Creates  the  file  before  doing the same as above. If the file
              already exists, an error message will be printed and  no  action
              will be taken.

       aespasswd -f /usr/local/etc/bwctld.keys -d testuser

              Deletes  the  identity  testuser  from the keyfile.  If the file
              does not exist, an error message will be printed and  no  action
              will be taken.

SECURITY CONSIDERATIONS

       The  keys  in the keyfile are not encrypted in any way. The security of
       these keys is completely dependent upon the security of the system  and
       the discretion of the system administrator.

RESTRICTIONS

       identity  names  are  restricted  to 16 characters, and passphrases are
       limited to 1024 characters.

SEE ALSO

       owping(1),     owampd(1),     bwctl(1),     bwctld(1)      and      the
       http://e2epi.internet2.edu/owamp  and  http://e2epi.internet2.edu/bwctl
       web sites.

ACKNOWLEDGMENTS

       This material is based in part on work supported by the  National  Sci-
       ence  Foundation (NSF) under Grant No. ANI-0314723. Any opinions, find-
       ings and conclusions or recommendations expressed in this material  are
       those  of the author(s) and do not necessarily reflect the views of the
       NSF.

                                  2004 Feb 8                      aespasswd(1)