Online transaction has become principal in organizations and businesses, normalizing e-commerce in our daily activities and tasks. Significantly, e-commerce is both advantages and challenging. While it makes trading easier, it also highlights the need for more effective security measures as the transaction involves more than just bills but as well exchange of sensitive information. HTTPS which is a protocol integrated with Transport layer security (TLS) for secure connection between server and clients had rise as a crucial security measures into practice. This post explore the fundamental of TLS in establishing as a secure connection for web browsing.
One way users can ensure that they are browsing or utilizing a secure online platform or website is by identifying the presence of the padlock icon and “https://” in the website URL. Both of these indications mean that the website operates on several security practices such as encryption and authentication aimed at providing secure communication between the server and client. In reality, this reliable and secure communication between networked devices is made achievable through TLS, a cryptographic protocol that operates at the transport layer of the OSI (Open Systems Interconnection) model.
TLS has become the standard protocol for secure communication on the internet. At its core, it consists of two main layers in establishing this secure connection.
1. TLS Handshake Protocol
- The TLS handshake protocol serves as the primary step in establishing a secure connection between a client (such as a web browser) and a server (such as a web server).
- It involves a series of steps that enable the client and server to authenticate each other’s identities, coincide on cryptographic algorithms and parameters for encryption, authentication, and key exchange, and exchange cryptographic keys securely.
- With TLS handshake protocol, both parties are guaranteed communicating with the intended recipient and establishes the parameters for secure communication.
2. TLS Record Protocol
- The responsibility in keeping secure environment is taken by TLS record protocol once the handshake is complete and a secure connection is established.
- The record protocol is responsible for encrypting and authenticating the data exchanged between the client and server using the agreed-upon cryptographic algorithms and keys.
- It separates the data into manageable chunks known as TLS records, encrypts them, adds authentication information, and then transmits them over the network.
- Finally, upon receiving the encrypted data, the receiving party decrypts and verifies the authenticity of the data using the shared cryptographic keys.
In every online transaction, maintaining a secure connection is paramount. The expanding landscape of cyber threats poses undeniable damage to individuals and organizations. TLS represents one solution, designed to establish a secure connection through its layers of protocol, ensuring that users are protected against such impacts. Nevertheless, it is in the hands of both implementers and users to ensure that security practices remain intact amidst the evolving capabilities in the digital realm.
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