Identify GPG file

[vedaal at hush.com]

avi israel isr_avi at netvision.net.il
wrote on Thu Nov 15 11:27:24 CET 2007 :


" ... how can I identify GPG files not by their name (e.g. 
extension) but by their first bytes or file header.
For example – zip file starts with 'PK' (ASCII). ..."


as a general rule, comparing pgp and gnupg encrypted files in ascii 
armor,

the gnupg encrypted message will begin with an 'h' 
and
the pgp one will begin with a 'q'

for both v4 rsa and dh keys


for v3 keys,
pgp will also begin with an 'h'

(but *most* of us, with some notable exceptions ;-)
don't use v3 keys anymore except when using pgp 2.x )


vedaal

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