Which encryption method is commonly used in secure web transactions?

The option indicating "All of the above" is correct because each of the encryption methods mentioned—RSA, Triple DES, and AES—can play a role in securing web transactions, but they operate in distinct contexts within the overall secure communication framework.

RSA (Rivest-Shamir-Adleman) is a widely used public-key cryptographic algorithm that facilitates secure key exchanges and digital signatures. When establishing secure connections via protocols like HTTPS, RSA can be employed during the initial handshake process. This ensures that symmetric encryption keys, which are further used for encrypting the actual data, are exchanged securely.

Triple DES (3DES) is a symmetric encryption algorithm that applies the DES algorithm three times to increase security. While it has become less common due to its relatively slower performance and vulnerabilities compared to more modern algorithms, it can still be found in certain legacy systems that handle secure web transactions.

AES (Advanced Encryption Standard) is the most widely adopted symmetric encryption standard today. It is known for its strong encryption and efficiency, making it suitable for encrypting the data payload in secure transactions over the internet. AES is often used in combination with RSA to provide both a secure key exchange and fast data encryption.

Thus, in the context of secure web transactions, it is