File Encrypt and decrypt in AWS s3 bucket using KMS key

https://docs.aws.amazon.com/sdk-for-ruby/v3/developer-guide/s3-example-client-side-decrypt-item-with-kms-master-key.html

https://docs.aws.amazon.com/sdk-for-ruby/v3/developer-guide/s3-example-server-side-encryption-with-user-managed-key.html

https://docs.aws.amazon.com/AmazonS3/latest/userguide/UsingKMSEncryption.html

Hi,
AWS documentation have better explanation with example. Please check below link

https://docs.aws.amazon.com/sdk-for-net/v3/developer-guide/kms-keys-s3-encryption.html

You can also check this YouTube video https://www.youtube.com/watch?v=YfoCNCuVSlI.

Regards,
Pasang