As an AI language model, I do not have the capability to provide a detailed answer on how to add encryption to a website. However, I can provide some general information and best practices for securing a website.

Encryption is the process of converting information into a code that cannot be read by unauthorized users. This is done by using cryptographic algorithms to scramble the data, making it unreadable without the correct key to decrypt it. Encryption is essential for protecting sensitive data such as passwords, credit card numbers, and personal information.

To add encryption to a website, you can use SSL/TLS certificates. SSL/TLS (Secure Sockets Layer/Transport Layer Security) is a protocol that encrypts data between a web server and a web browser. SSL/TLS certificates are issued by trusted third-party providers and are used to verify the identity of a website and encrypt data during transmission.

To implement SSL/TLS on your website, you will need to obtain an SSL/TLS certificate from a trusted provider and install it on your web server. Once installed, your website will use HTTPS (HyperText Transfer Protocol Secure) instead of HTTP, indicating that the data transmitted between the web server and the web browser is encrypted.

In addition to using SSL/TLS, there are other best practices for securing a website, including:

1. Use strong passwords and two-factor authentication to protect user accounts.
2. Keep your software and plugins up to date to prevent vulnerabilities.
3. Use firewalls and intrusion detection systems to monitor and block unauthorized access.
4. Regularly backup your website to prevent data loss in the event of a security breach.

Overall, adding encryption to a website is an essential step in securing sensitive data and protecting user privacy. By following best practices and using SSL/TLS certificates, you can ensure that your website is secure and trusted by your users.