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NAME
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passwd, netkey – change user password
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SYNOPSIS
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passwd [ username[@domain] ]
netkey
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DESCRIPTION
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Passwd changes the invoker’s Plan 9 password and/or APOP secret.
The Plan 9 password is used to login to a terminal while the APOP
secret is used for a number of external services: POP3, IMAP,
and VPN access. The optional argument specifies the user name
and authentication domain to use if different than the one associated
with the machine
passwd is run on.
The program first prompts for the old Plan 9 password in the specified
domain to establish identity. It then prompts for changes to the
password and the secret. New passwords and secrets must be typed
twice, to forestall mistakes. New passwords must be sufficiently
hard to guess. They may be of any length greater than seven characters.
Netkey prompts for a password to encrypt network challenges. It
is a substitute for a SecureNet box.
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SOURCE
SEE ALSO
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encrypt(3)
Robert Morris and Ken Thompson, “UNIX Password Security,” AT&T
Bell Laboratories Technical Journal Vol 63 (1984), pp. 1649-1672
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