What encryption key is used to create a digital signature of a message? a. The receiver's public key b. The sender's public key c. The receiver's private key d. The sender's private key Which of the following statements are true regarding 802.11 i security? a. WPA uses a static 128-bit key to encrypt session traffic b. WPA2 uses AES encryption to encrypt session data c. WPA2 uses asymmetric encryption to encrypt session data d. WEP is not secure and should not be used 802.3