App Crashing on Decryption

I have generated keys and send public key as base 64 for java server key, server return me encrypted text. While decrypt the text, i am receiving error message "Error decrypting, OSStatus == -50."

I have to send my public key modulus and exponent to the .NET server which use my client RSA public key encrypt a random message.
I decrypt the data back.But a messed message show.I wonder if the text encoding type is different,but I changed the type and never worked.

The current example application crashes at line 470 of class RSA.m while trying to decrypt after a key pair was generated.

After encrypt the string using Server Public Key, the encrypted data can not be decrypted at server using the Server Private Key.

Exception:
The data to be decrypted exceeds the maximum for this modulus of 128 bytes

Kindly help me to fix it

I found that you are using only publicKeyRef in both encryption (encryptUsingPublicKeyWithData, encryptUsingPrivateKeyWithData) whereas privateKeyRef should be used in encryptUsingPrivateKeyWithData.

In - (NSString *)rsaEncryptWithData:(NSData*)data usingPublicKey:(BOOL)usePublicKey server:(BOOL)isServer and on line number 438 you used SecKeyRef key = self.publicKeyRef; for both cases.
I tried to use privateKeyRef in place of publicKeyRef but I got nil response. Please fix it

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