OptionalkeyAn optional list of string alternate names used to reference a key. If a key is created with alternate names, then encryption may refer to the key by the unique alternate name instead of by _id.
OptionalkeyOptional 96-byte custom key material used when creating a data key instead of libmongocrypt’s random material. *
OptionalmasterIdentifies a new KMS-specific key used to encrypt the new data key
Options to provide when creating a new data key.