gpg --armor --encrypt -r 9F75909D < /tmp/clear.txt
gpg: 8AF32E90: There is no indication that this key really belongs to the owner
1024g/8AF32E90 2003-11-28 "Paolino Paperino <paperino@paperopoli.com>"
Primary key fingerprint: FC05 4080 CC62 8525 075D AECE 4410 AB63 9F75 909D
Subkey fingerprint: 67D3 AB85 362C AA94 C85F 6D8E 0330 B5D3 8AF3 2E90
It is NOT certain that the key belongs to the person named
in the user ID. If you *really* know what you are doing,
you may answer the next question with yes
Use this key anyway? yes
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Version: GnuPG v1.2.3 (GNU/Linux)
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ogjeZv7dQOeS1rdfiHFKJEE4O9c/DHgNeGHX8jAy
=5xkj
-----END PGP MESSAGE-----