Last updated：2020-11-18 12:01:23
|Kingsoft Cloud Key Management Service (KKMS)||A key management service that Kingsoft Cloud provides.|
|customer master key (CMK)||A master key that you create by using the KKMS console or API. You can use CMKs to generate data keys and envelopes. You can also use CMKs to encrypt data with a maximum size of 4 KB.|
|data key||A plaintext data key that is used to encrypt data.|
|envelope encryption||A technology that uses KKMS to generate data keys for the data to be encrypted. You can use the generated data keys to encrypt and decrypt data.|
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