making a passphrase by doubling a password and tweaking the end

Anonyma anon-bounces at
Thu Feb 8 14:43:46 CET 2007

(This is as much about ssh as gpg, but I figure there should be some
passphrase expertise here.)

Suppose my shell password is "SapNilph4" (I just got that from APG),
is it stupid to make a passphrase for an ssh or gpg key by doubling it
and changing the end, for example "SapNilph4SapNilph3"?  Or am I
really wasting potential entropy this way?


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