Question: What is the maximum number of times a key can be used for AES GCM encryption in SEPPs, according to the security considerations in RFC 7518?
Option 1: 2^32 times
Option 2: 2^64 times
Option 3: 2^128 times
Option 4: 2^256 times
Explanation: According to the security considerations in RFC 7518, the same key shall not be used more than 2^32 times for AES GCM encryption. This restriction is specified to prevent potential security vulnerabilities and ensure secure data transmission in SEPPs (Security Edge Protection Proxies).