How to get fingerprint from public key before importing to keyring?

[kisimoto]

Hello.

I have a question about public key. I know there is a way to get 
fingerprint after importing to keyring, but I can not find it 
before importing. 
If there is a way, please teach me.
If there is no way, would you teach me the format of key 
file(.asc)?
For example, when key length is 1024 bits, fingerprint or the 
part to identify key owner is from XX byte to XX byte in the 
file.

Thank you.

Koji Kishimoto  kisimoto@yun.co.jp