What is the purpose of Secure Sockets Layer (SSL)?

The purpose of Secure Sockets Layer (SSL) is to securely transmit documents over the Internet. SSL is a protocol designed to provide a secure channel between client and server, especially for web traffic. When SSL is implemented, it establishes an encrypted link that ensures the data being transmitted remains confidential and secure from any interception or tampering during its transit. This secure transmission is crucial for activities like online banking, shopping, or any communications requiring confidentiality.

While SSL does play a role in other areas, such as improving data integrity (through cryptographic checksums and ensuring that data has not been altered), its primary function is centered around establishing a secure communication channel. Thus, securely transmitting information over the Internet is its main purpose.