Hello,

> 3) In enc manpage, what does a "salt" mean? 
In "openssl enc" passphrase and salt are parameters
to PKCS#5-like key generation function.
You may read more about PKCS#5 at:
        http://www.rsasecurity.com/rsalabs/node.asp?id=2127

> 4) Suppose I have an input file foo.in and a key file foo.key, and want to 
> use bf-cfb to encrypt the input file using the key file. What kind of 
> command should I use? 
openssl bf-cfb -in foo.in -out foo.out
-kfile_with_passphrase_in_first_line.txt

Best regards,
-- 
Marek Marcola <[EMAIL PROTECTED]>

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