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DEW uses a data encryption key (DEK) to encrypt data and uses a customer master key (CMK) to encrypt the DEK. Figure 1 Data encryption process Table 1 describes the keys involved in the data encryption process.
The data security administrator uses KMS keys to encrypt a piece of sensitive data, for example, bank card information. For details, see Example 1: Encrypting or Decrypting Small Volumes of Data.
If the image you selected is not encrypted, you can select Encryption to encrypt the system disk. Disk encryption provides strong security protection for your data.
