CRT stands for “Certificate.” It is a file format commonly used for storing certificate data, such as public keys and certificates for secure websites. The file contains encoded data that is used to establish a secure connection between a web server and a client’s web browser. CRT files are often used in conjunction with key files, which contain the corresponding private keys.
You may encounter CRT files when installing SSL certificates for a website or when configuring secure communication for other purposes. The CRT file can be used by web servers and other software to establish a secure connection with clients. It is typically used with the Secure Sockets Layer (SSL) or Transport Layer Security (TLS) protocols to encrypt data transmitted between the server and client.
If you need to open a CRT file, you can use a text editor or a program specifically designed for viewing and managing certificate data, such as OpenSSL or Microsoft Management Console (MMC). You can also import the CRT file into a web browser to install the certificate for a secure website.