What does the message mean while encrypting?

[张靖]

Hi

I would encrypt one file by gpg.
After I execute following command line:
C:\WP_ECL~1.4\TESTCE~1>gpg -r Luna --encrypt test.txt

Following message pops up:

gpg: 07421961: There is no assurance this key belongs to the named user

pub  1024g/07421961 2008-07-26 Li Meng (Luna) <lmluna106 at yahoo.com.cn>
 Primary key fingerprint: E36D 817B 1A23 17DB E93B  F0F3 5AE5 3D90 0F89 CA08
      Subkey fingerprint: AB25 B0F5 5E5F 8EC2 9C35  2557 4382 52A0 0742 1961

It is NOT certain that the key belongs to the person named
in the user ID.  If you *really* know what you are doing,
you may answer the next question with yes.

Use this key anyway? (y/N)

Now I have confirm a 'y' to complete the processing.

How can I execute the command without a confirm like above?

thanks.

-- 
Best Regards
--------------------------
Zhang Jing
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