KMS provides the following functions:
Using the KMS console or APIs, you can perform the following operations on CMKs:
By calling APIs, you can create, encrypt, and decrypt DEKs, and retire a grant on a CMK. For details, see the Key Management Service API Reference.
You can generate 512-bit hardware true random numbers using a KMS API. The 512-bit hardware true random numbers can be used as or serve as basis for keys and encryption parameters. For details, see the Key Management Service API Reference.