com.amazonaws.services.dynamodbv2.datamodeling.encryption.providers.store

Class MetaStore

java.lang.Object

com.amazonaws.services.dynamodbv2.datamodeling.encryption.providers.store.ProviderStore

com.amazonaws.services.dynamodbv2.datamodeling.encryption.providers.store.MetaStore

public class MetaStore
extends ProviderStore

Provides a simple collection of EncryptionMaterialProviders backed by an encrypted DynamoDB table. This can be used to build key hierarchies or meta providers. Currently, this only supports AES-256 in AESWrap mode and HmacSHA256 for the providers persisted in the table.

Author:

rubin

Constructor Summary

Constructors

Constructor and Description
MetaStore(com.amazonaws.services.dynamodbv2.AmazonDynamoDB ddb, String tableName, DynamoDBEncryptor encryptor)

Method Summary

Modifier and Type	Method and Description
static com.amazonaws.services.dynamodbv2.model.CreateTableResult	createTable(com.amazonaws.services.dynamodbv2.AmazonDynamoDB ddb, String tableName, com.amazonaws.services.dynamodbv2.model.ProvisionedThroughput provisionedThroughput) Creates a DynamoDB Table with the correct properties to be used with a ProviderStore.
long	getMaxVersion(String materialName) Returns the maximum version number associated with materialName.
EncryptionMaterialsProvider	getOrCreate(String materialName, long nextId) Returns the provider with the specified name and version and creates it if it doesn't exist.
EncryptionMaterialsProvider	getProvider(String materialName, long version) Returns the provider with the specified name and version.
long	getVersionFromMaterialDescription(Map<String,String> description) Extracts the material version from description.

Methods inherited from class com.amazonaws.services.dynamodbv2.datamodeling.encryption.providers.store.ProviderStore

getProvider, newProvider

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

MetaStore

public MetaStore(com.amazonaws.services.dynamodbv2.AmazonDynamoDB ddb,
                 String tableName,
                 DynamoDBEncryptor encryptor)

Method Detail

getProvider

public EncryptionMaterialsProvider getProvider(String materialName,
                                               long version)

Description copied from class: ProviderStore

Returns the provider with the specified name and version.

Specified by:

getProvider in class ProviderStore

getOrCreate

public EncryptionMaterialsProvider getOrCreate(String materialName,
                                               long nextId)

Description copied from class: ProviderStore

Returns the provider with the specified name and version and creates it if it doesn't exist.

Overrides:

getOrCreate in class ProviderStore

getMaxVersion

public long getMaxVersion(String materialName)

Description copied from class: ProviderStore

Returns the maximum version number associated with materialName. If there are no versions, returns -1.

Specified by:

getMaxVersion in class ProviderStore

getVersionFromMaterialDescription

public long getVersionFromMaterialDescription(Map<String,String> description)

Description copied from class: ProviderStore

Extracts the material version from description.

Specified by:

getVersionFromMaterialDescription in class ProviderStore

createTable

public static com.amazonaws.services.dynamodbv2.model.CreateTableResult createTable(com.amazonaws.services.dynamodbv2.AmazonDynamoDB ddb,
                                                                                    String tableName,
                                                                                    com.amazonaws.services.dynamodbv2.model.ProvisionedThroughput provisionedThroughput)

Creates a DynamoDB Table with the correct properties to be used with a ProviderStore.