XSEND, XGET, ENROLL(1) General Commands Manual XSEND, XGET, ENROLL(1)
xsend, xget, enroll - secret mail
These commands implement a secure communication channel; it is like
mail(1), but no one can read the messages except the intended recipi-
ent. The method embodies a public-key cryptosystem using knapsacks.
To receive messages, use enroll; it asks you for a password that you
must subsequently quote in order to receive secret mail.
To receive secret mail, use xget. It asks for your password, then
gives you the messages.
To send secret mail, use xsend in the same manner as the ordinary mail
command. (However, it will accept only one target). A message
announcing the receipt of secret mail is also sent by ordinary mail.
/usr/spool/secretmail/*.key: keys /usr/spool/secretmail/*.[0-9]: mes-
It should be integrated with ordinary mail. The announcement of secret
mail makes traffic analysis possible.
XSEND, XGET, ENROLL(1)