I am trying to implement RSA encryption logic in a iPhone app. I have created two seperate public and private key file using Java API. As per our requirement we will have to encrypt few secured data(inside iPhone client app) using previously generated public key file before sending it to J2EE based server. How can I create SecKeyRef object from this already generated public key file??? or How can we encrypt a text(inside iPhone client app) using this public key file???