ClientEncryption.encrypt()
New in version 4.2.
ClientEncryption.encrypt(encryptionKeyId, value, encryptionAlgorithm)
ClientEncryption.encrypt()
encrypts thevalue
using the specifiedencryptionKeyId
andencryptionAlgorithm
.encrypt()
supports explicit (manual) encryption of field values.encrypt()
has the following syntax:clientEncryption = db.getMongo().getClientEncryption() clientEncryption.encrypt( encryptionKeyId, value, encryptionAlgorithm ) ParameterTypeDescriptionencryptionKeyId
UUID
The data encryption key to use for encrypting the
value
.The UUID is a BSON
binary data
object with subtype4
that identifies a specific data encryption key. If the data encryption key does not exist in the key vault configured for the database connection,encrypt()
returns an error. See Encryption Key Vault for more information on key vaults and data encryption keys.value
The value to encrypt.encryptionAlgorithm
stringThe encryption algorithm to use for encrypting the
value
.AEAD_AES_256_CBC_HMAC_SHA_512-Deterministic
AEAD_AES_256_CBC_HMAC_SHA_512-Random
For complete documentation on the supported encryption algorithms, see Encryption Algorithms.
Returns: A binary data
object with subtype 6.
Behavior
Enable Client-Side Field Level Encryption on Database Connection
The mongo
client-side field level encryption methods
require a database connection with client-side field level encryption
enabled. If the current database connection was not initiated with
client-side field level encryption enabled, either:
Use the
Mongo()
constructor from themongo
shell to establish a connection with the required client-side field level encryption options. TheMongo()
method supports the following Key Management Service (KMS) providers for Customer Master Key (CMK) management:or
Use the
mongo
shell command line options to establish a connection with the required options. The command line options only support the Amazon Web Services KMS provider for CMK management.
Unsupported BSON Types
encrypt()
does not supports encrypting
values with the following BSON types:
minKey
maxKey
null
undefined
If encrypting a field using
AEAD_AES_256_CBC_HMAC_SHA_512-Deterministic
,
encrypt()
does not support the following
BSON types:
double
decimal128
bool
object
array
javascriptWithScope
(Deprecated)
Example
The following example uses a locally managed KMS for the client-side field level encryption configuration.
Configuring client-side field level encryption for a locally
managed key requires specifying a base64-encoded 96-byte
string with no line breaks. The following operation generates
a key that meets the stated requirements and loads it into
the mongo
shell:
TEST_LOCAL_KEY=$(echo "$(head -c 96 /dev/urandom | base64 | tr -d '\n')") mongo --nodb --shell --eval "var TEST_LOCAL_KEY='$TEST_LOCAL_KEY'"
Create the client-side field level encryption object using the generated local key string:
var ClientSideFieldLevelEncryptionOptions = { "keyVaultNamespace" : "encryption.__dataKeys", "kmsProviders" : { "local" : { "key" : BinData(0, TEST_LOCAL_KEY) } } }
Use the Mongo()
constructor to create a database connection
with the client-side field level encryption options. Replace the
mongodb://myMongo.example.net
URI with the connection string
URI of the target cluster.
encryptedClient = Mongo( "mongodb://myMongo.example.net:27017/?replSetName=myMongo", ClientSideFieldLevelEncryptionOptions )
Retrieve the ClientEncryption
object
and use the ClientEncryption.encrypt()
method to encrypt
a value using a specific data encryption key UUID
and
encryption algorithm:
clientEncryption = encryptedClient.getClientEncryption(); clientEncryption.encrypt( UUID("64e2d87d-f168-493c-bbdf-a394535a2cb9"), "123-45-6789", "AEAD_AES_256_CBC_HMAC_SHA_512-Random" )
If sucessful, encrypt()
returns the encrypted
value:
BinData(6,"AmTi2H3xaEk8u9+jlFNaLLkC3Q/+kmwDbbWrq+h9nuv9W+u7A5a0UnpULBNZH+Q21fAztPpU09wpKPrju9dKfpN1Afpj1/ZhFcH6LYZOWSBBOAuUNjPLxMNSYOOuITuuYWo=")
For complete documentation on initiating MongoDB connections with
client-side field level encryption enabled, see Mongo()
.