Premise not say why the use of RSA encryption your own search, direct positive as follows:
I. generate a public key and a private key, and save
II. Uses public key cryptography, the private key to decrypt
Postscript: In general use, the data will first bas64 encryption, and then use rsa encryption of the encrypted content, the content after the last pair rsa decryption
Bas64 be decrypted.