gpg can't decrypt with PGP 7 secret key

Doug Ellsley
Mon Jan 14 00:02:01 2002

I have installed GPG on my Mac OS X system and then imported a PGP 7 
public and secret key pair into my gpgp keyrings. Now I can encrypt to 
that key but when I try to decrypt with it I get the error unknown 
cipher algorithm and no secret key.
as you can see below,  I do in fact have the secret key on my keyring, 
but it won't decrypt. Any suggestions???
Thanks, please cc me as I am not on the list.

[localhost:~] doug% gpg --decrypt /Users/doug/Desktop/passwords.rtf
gpg: protection algorithm 1 is not supported
gpg: encrypted with 1024-bit ELG-E key, ID CAD373FE, created 1997-08-11
       "Doug Ellsley <>"
gpg: public key decryption failed: unknown cipher algorithm
gpg: decryption failed: secret key not available
[localhost:~] doug% gpg --list-secret-keys
sec  1024D/A2F98CB3 1997-08-11 Doug Ellsley <>
ssb  1024g/CAD373FE 1997-08-11

[localhost:~] doug%

Doug Ellsley
PGP 0xA2F98CB3
Sun Valley Underground

S  V  U    N  E  W    M  E  D  I  A