Security methods for protecting discovery procedures in wireless networks

A method of wireless communication, comprising:

• receiving, by a first network function, an encrypted and integrity-protected message from a wireless device;
• and
• decrypting the encrypted and integrity-protected message using a first key that is derived from a second key,
• wherein the encrypted and integrity-protected message is obtained by encrypting and integrity-protecting a message using the first key, and
• wherein the second key is established using a communication between the wireless device and a second network function.

A wireless communication device, comprising:

• one or more processors configured to generate an encrypted and integrity-protected message;
• and
• a transceiver configured to transmit the encrypted and integrity-protected message to a first network function,
• wherein the encrypted and integrity-protected message is encrypted using a first key that is derived from a second key,
• wherein the second key is established using a communication with a second network function, and
• wherein the encrypted and integrity-protected message is obtained by encrypting and integrity-protecting a message.