KeyVault.getKeyByAltName()¶

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Behavior
Example

New in version 4.2.

KeyVault.getKeyByAltName(keyAltName)¶

Gets all data encryption keys with the specified keyAltName.

getKeyByAltName() has the following syntax:

keyVault = db.getMongo().getKeyVault()

keyVault.getKeyByAltName("keyAltName")

returns:

Document representing a matching data encryption key.

Returns nothing if no data encryption key has the specified keyAltName.

Behavior¶

Requires Configuring 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 the mongo shell to establish a connection with the required client-side field level encryption options. The Mongo() method supports both Amazon Web Services and Local 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 AWS KMS provider for CMK management.

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:

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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:

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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.

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encryptedClient = Mongo(
  "mongodb://myMongo.example.net:27017/?replSetName=myMongo",
  ClientSideFieldLevelEncryptionOptions
)

Retrieve the KeyVault object and use the KeyVault.getKeyByAltName() method to retrieve the data encryption key whose keyAltNames array includes the specified key alternate name:

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keyVault.getKeyByAltName("data-encryption-key")

getKeyByAltName() returns the following data encryption key:

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{
    "_id" : UUID("b4b41b33-5c97-412e-a02b-743498346079"),
    "keyMaterial" : BinData(0,"PXRsLOAYxhzTS/mFQAI8486da7BwZgqA91UI7NKz/T/AjB0uJZxTvhvmQQsKbCJYsWVS/cp5Rqy/FUX2zZwxJOJmI3rosPhzV0OI5y1cuXhAlLWlj03CnTcOSRzE/YIrsCjMB0/NyiZ7MRWUYzLAEQnE30d947XCiiHIb8a0kt2SD0so8vZvSuP2n0Vtz4NYqnzF0CkhZSWFa2e2yA=="),
    "creationDate" : ISODate("2019-08-12T21:21:30.569Z"),
    "updateDate" : ISODate("2019-08-12T21:21:30.569Z"),
    "status" : 0,
    "version" : NumberLong(0),
    "masterKey" : {
        "provider" : "local"
    },
    "keyAltNames" : [
        "data-encryption-key"
    ]
}

← KeyVault.removeKeyAlternateName() getClientEncryption() →