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    <p>Of course, the public key is something someone else uses to encrypt data so that only someone with the private key can decrypt it.</p> <p>The very definition of a public key is that you can give it to anyone. You wouldn't want anyone to be able to decrypt anyone else's encrypted message would you?</p> <p>It is impossible to tell from your code fragment where your private key is stored, or what the contents (or even class) of keyRefs is.</p> <p>EDIT: In response to above OP's comment. And clarification.</p> <p>*"The public key itself is the public part of a RSA-key-pair stored on the server. The encrypted message was created on the server by first JSON-encoding the object, then encrypted with the private-key with OPENSSL_PKCS1_PADDING, then base64-encoded, and then JSON-encoded again as a part of the final message. The message and public key is stored on the client. What i want is to decrypt the message on the client by using the public key. As i said, im not very good at this subject so i might have tried to do this the wrong way"*</p> <p>Thats not how public key cryptography works. The server and client exchange public keys. Then each of them use the other's public key to encrypt data sent to the opposite party. The receiving party always uses their own private key to decrypt the message.</p> <p>If you want the server to generate an encrypted response, have the client pass their public key in the request, use that public key to encrypt the response, and then decrypt the response on the client with the client's private key.</p>
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    1. COThe public key is stored on the server. In this case it is the server that encrypts the data, the clients are just supposed to decrypt them with the public key.
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    2. COI'm using code from: http://blog.flirble.org/2011/01/05/rsa-public-key-openssl-ios/ to use the public key i get from the server
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    3. COHi, thanks again for your response. I get that this isn't how it normally is done. But by allowing the client to have both the private and public key it would defeat the entire purpose of what i am trying to do. The client must not be able to reproduce the encoded messages. If the clients are able to reproduce the encoded messages they can "cheat" the system.
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