Server-side encryption is a technique to encrypt data using Amazon S3-managed encryption keys. Server-side encryption with KMS is a technique to encrypt data using the AWS KMS-managed customer master key.
Server-side encryption
To read a server-side encrypted file, select the encrypted file in the Amazon S3 V2 source.
Server-side encryption with KMS
To read a server-side encrypted file with KMS, specify the AWS KMS-managed customer master key in the
Customer Master Key ID
connection property and select the encrypted file in the Amazon S3 V2 source.
You do not need to specify the encryption type in the advanced source properties.