See What is AWS Key Management Service for more information.
Use the Amazon key Management Service master key When choosing this option, Amazon S3 will decrypt data for anyone who has the permissions to access this object in the cloud, along with permissions to use a specified master key. 
Use the Amazon S3 Service master key When choosing this option, Amazon S3 will decrypt data for anyone who has the permissions to access this object in the cloud. When choosing this option, you need to specify which permissions a user is required to have to be able to access the data in this backup: The following additional settings are available when using Amazon S3 for storing your backup:Įnables encryption of your backup on the side of the Amazon cloud server. If you selected Amazon S3 as destination storage for your backup, the Backup Wizard provides an extended version of this page enabling you to specify the encryption options for protecting the data stored on Amazon cloud servers as well. Note that if you change any of the encryption settings (algorithm or password) for the existing backup plan, a full backup will be executed on the next backup plan run Amazon S3-specific Settings If you chose to save your backup plan configuration to the destination storage, this configuration file will not store the encryption password for security reasons and you need to save this password elsewhere to be able to restore the backup's contents afterward. See the following article to learn more about AES encryption: Advanced Encryption Standard. 
The more the key size, the stronger the encryption (with more time required for processing your backup). MSP360 (CloudBerry) Backup supports AES encryption with key sizes of 128, 192 and 256 bits. In addition, you can protect your backup by encrypting its contents. Otherwise, MSP360 (CloudBerry) Backup uses a custom compression algorithm.
If the current SQL Server version/edition supports this feature, MSP360 (CloudBerry) Backup uses the native SQL Server compression during a backup's processing.
SQL Server 2012 and higher: Enterprise, Business Intelligence, Standard, Developer. 
SQL Server 2008: Enterprise, Developer.Microsoft uses a proprietary mechanism to compress backups for the following SQL Server versions: You can make MSP360 (CloudBerry) Backup compress your backup contents to decrease the space required for storing the backup and the time needed to upload it to the target storage. On this wizard page, you can choose whether to compress and/or encrypt your backup's contents. Specify the Compression and Encryption Settings
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