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 NAME     
 |  |  |  | passwd, netkey – change user password 
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 SYNOPSIS     
 |  |  |  | passwd [ username[@domain] ] 
    
    
    netkey 
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 DESCRIPTION     
 |  |  |  | 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     
 |  |  |  | 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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