``no valid user IDs''

[Wenchi Liao]

I'm using gpg on netbsd...

  $ gpg --version
  gpg (GnuPG) 1.0.0
  Copyright (C) 1999 Free Software Foundation, Inc.
  This program comes with ABSOLUTELY NO WARRANTY.
  This is free software, and you are welcome to redistribute it
  under certain conditions. See the file COPYING for details.

  Supported algorithms:
  Cipher: 3DES, CAST5, BLOWFISH, TWOFISH
  Pubkey: ELG-E, DSA, ELG
  Hash: MD5, SHA1, RIPEMD160

When I try to import a public key from someone using pgpi, I get..

$ show | gpg --import
gpg: key 39B9671D: unsupported public key algorithm
gpg: key 39B9671D: no valid user IDs
gpg: this may be caused by a missing self-signature
gpg: Total number processed: 1
gpg:           w/o user IDs: 1


...and gpg --list-key doesn't show a new key.

I'm guesing the ``unsupported public key'' part is just that.
But what about the ``no valid user IDs'' part? Do I need to tell
the sender to to sign themself?

WL