Which method of encryption allows users to manage their own keys in S3?

Client-Side Encryption is the method of encryption that allows users to manage their own keys when storing data in Amazon S3. With client-side encryption, data is encrypted by the client before it is sent to S3. This means that the user has full control over the encryption keys used for the data. The user is responsible for generating, managing, and storing these keys securely.

This is particularly important for compliance and security-sensitive applications where organizations want to ensure that only they have access to the encryption keys, providing an additional layer of security over the data stored in S3. By handling encryption on the client side, users can implement their own key management practices, which is essential for scenarios that require stringent access controls.

In contrast, Server-Side Encryption (SSE) involves Amazon S3 encrypting the objects on the server side using keys managed by AWS or the user (if SSE-C is used). However, in SSE, AWS manages the encryption keys unless the user opts for SSE-C, which still requires the user to provide the key during each object upload or retrieval, but doesn't offer the same level of user control as client-side encryption does.

Default Encryption simply refers to a setting that applies server-side encryption automatically to objects that are uploaded without specifying