.TH NETKEY 1.SH NAMEnetkey \- calculate response to authentication challenge.SH SYNOPSIS.B netkey.SH DESCRIPTION.I Netkeycalculates a response to a challenge made by a system to authenticate a user,based on a shared secret (password), usingthe same algorithm as a SecureNet device.It reads and writes.BR /dev/cons .It prompts once for the secret (echo is turned off).It then repeatedly prompts for a remote system's challenge,and once given it, calculates and prints the corresponding response.It exits on an empty challenge or end of file..SH SOURCE.B /appl/cmd/netkey.b