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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.
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.
