UMBC CMSC202, Computer Science II, Fall 1998,
Sections 0101, 0102, 0103, 0104
There are several ways to get started on PGP, which stands for "Pretty Good
If all you want to do is verify a piece of mail from Prof. Chang, then
follow these instructions:
If the UNIX shell could not find the pgp command, try
/usr/local/bin/pgp instead. You apparently do not have the
directory /usr/local/bin in your PATH environment
variable. (You should.)
- make a directory in your home directory called .pgp
- copy the pubring.pgp file from
cp /afs/umbc.edu/users/c/h/chang/pub/cs202/pgp/pubring.pgp ~/.pgp/
- save the email message in question in a file, call it
- check the file with pgp using the following command
- You should get a response like the following
No configuration file found.
Pretty Good Privacy(tm) 2.6.2 - Public-key encryption for the masses.
(c) 1990-1994 Philip Zimmermann, Phil's Pretty Good Software. 11 Oct 94
Uses the RSAREF(tm) Toolkit, which is copyright RSA Data Security, Inc.
Distributed by the Massachusetts Institute of Technology.
Export of this software may be restricted by the U.S. government.
Current time: 1998/01/26 21:14 GMT
Warning: Unrecognized ASCII armor header label "Charset:" ignored.
File has signature. Public key is required to check signature. .
Good signature from user "Richard Chang ".
Signature made 1998/01/21 17:20 GMT
WARNING: Because this public key is not certified with a trusted
signature, it is not known with high confidence that this public key
actually belongs to: "Richard Chang ".
Plaintext filename: verify
17 Sep 1998 16:40:50 EDT
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