How does Docker Content Trust (DCT) work?
There are multiple techniques used in DCT that take care of all security concerns. Mostly, it uses a specific cryptographic key technique. You can understand it by an example. We know that each locker can be opened with a unique key, and we can’t open the locker without the key. Similarly, in DCT, the key works as a signer, and we cannot use an image without the specific key. which will enhance the security and make sure that it is not altered by someone else or a non-authorized person, which will give you confidence, and you can pull and use it in your local system without worrying about the authenticity of an image.
In the first step, the repository owner creates a pair of unique keys for the Docker image, and then the key provides a unique identity to the image. The user can access the image by using the key.
What Is Docker Trust Content ?
When we are using Docker images, we must think about whether the image we are using is trustworthy or not, because trust is a central concern in every field. especially when we download external resources from our local system. In this scenario, Docker comes up with a special security feature called Docker Content Trust (DCT).