data encryption key

例句：

1. 1.The data encryption key is used to encrypt the sensitive information.
   数据加密密钥用于加密敏感信息。
2. 2. The company has a unique encryption key that only authorized personnel can access.
   该公司拥有一个独特的加密密钥，只有授权人员才能访问。
3. 3. The data encryption key must be kept secret and not shared with anyone.
   数据加密密钥必须保密，不得与任何人分享。