Java meets mongodb csfle tutorial

in this tutorial, we will explore how to use java with mongodb client-side field level encryption (csfle). csfle allows you to selectively encrypt fields in your mongodb documents before they are stored in the database, providing an additional layer of security for sensitive data.

prerequisites:
- mongodb 4.2 or higher with csfle support enabled
- java development environment
- mongodb java driver 4.2 or higher

step 1: set up mongodb with csfle
- ensure that your mongodb server has csfle enabled. you can refer to the mongodb documentation for instructions on setting up csfle.

step 2: generate a key for encryption
- use the `mongocrypt` tool to create a key for encryption. this key will be used to encrypt and decrypt the fields in your documents.

step 3: configure your java project
- add the mongodb java driver dependency to your project. you can use maven or gradle to include the necessary dependencies.

step 4: implement encryption and decryption in java
- use the mongodb java driver to set up a csfle-enabled client and encrypt/decrypt fields in your documents.

here is an example of how to encrypt and decrypt a field in a mongodb document using java with csfle:

this example demonstrates how to encrypt the "ssn" field in a mongodb document using csfle and then decrypt it to retrieve the original value.

remember to handle exceptions and error cases appropriately in your java code when working with csfle to ensure the security and integrity of your data.

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