Final answer:
option 3.The encryption algorithm used in TLS 1.2 with AES GCM is AES GCM itself, a secure cryptographic algorithm that provides both encryption and built-in authentication, ensuring privacy and data integrity.
Step-by-step explanation:
The encryption algorithm used in TLS 1.2 with AES GCM is AES GCM itself. This stands for Advanced Encryption Standard with Galois/Counter Mode. When TLS 1.2 negotiates a cipher suite that includes AES GCM, it utilizes this symmetric key cryptographic block cipher algorithm that not only provides privacy by encryption but also ensures the integrity of the encrypted data through built-in authentication. AES GCM is preferred over other modes like AES CBC, AES ECB, or AES CTR for its efficiency and security properties, particularly because it combines both encryption and authentication in a single process which provides better security and performance.
The encryption algorithm used in TLS 1.2 with AES GCM is AES GCM.
AES GCM stands for Advanced Encryption Standard Galois/Counter Mode. It is a symmetric encryption algorithm that encrypts and authenticates data. It provides both confidentiality and integrity of the data being transmitted.
AES GCM combines the AES encryption algorithm with the Galois/Counter Mode (GCM) of operation. GCM is a block cipher mode that provides authentication and integrity checks for the encrypted data. It uses a unique nonce (number used once) for each message to ensure the security of the encryption process.