> How can I encrypt a large file (like 100mb) with a public key so 
> that no one other than who has the private key be able to decrypt it? 

Encrypt it using a strong symmetric key (such as AES) and use RSA to 
encrypt *that* key.

This is the way "everyone" does it.

        /r$

-- 
SOA Appliance Group
IBM Application Integration Middleware


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