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Showing content from https://aws.github.io/aws-encryption-sdk-java/com/amazonaws/encryptionsdk/jce/JceMasterKey.html below:

JceMasterKey (aws-encryption-sdk-java 2.4.1 API)

• java.lang.Object
• • com.amazonaws.encryptionsdk.MasterKeyProvider<K>
  • • com.amazonaws.encryptionsdk.MasterKey<JceMasterKey>
    • • com.amazonaws.encryptionsdk.jce.JceMasterKey

• • Constructor Summary
  • Method Summary All Methods Static Methods Instance Methods Concrete Methods  Modifier and Type Method and Description DataKey<JceMasterKey> decryptDataKey(CryptoAlgorithm algorithm, Collection<? extends EncryptedDataKey> encryptedDataKeys, Map<String,String> encryptionContext)

    Iterates through encryptedDataKeys and returns the first one which can be successfully decrypted.

    DataKey<JceMasterKey> encryptDataKey(CryptoAlgorithm algorithm, Map<String,String> encryptionContext, DataKey<?> dataKey)

    Returns a new copy of the provided

    dataKey

    which is protected by this

    MasterKey

    for use with

    algorithm

    and associated with the provided

    encryptionContext

    .

    DataKey<JceMasterKey> generateDataKey(CryptoAlgorithm algorithm, Map<String,String> encryptionContext)

    Generates a new

    DataKey

    which is protected by this

    MasterKey

    for use with

    algorithm

    and associated with the provided

    encryptionContext

    .

    static JceMasterKey getInstance(PublicKey wrappingKey, PrivateKey unwrappingKey, String provider, String keyId, String wrappingAlgorithm)

    Returns a JceMasterKey backed by the asymmetric key pair unwrappingKey and wrappingKey using wrappingAlgorithm.

    static JceMasterKey getInstance(SecretKey key, String provider, String keyId, String wrappingAlgorithm)

    Returns a JceMasterKey backed by the symmetric key key using wrappingAlgorithm.

    String getKeyId()  String getProviderId() 
    • Methods inherited from class com.amazonaws.encryptionsdk.MasterKeycanProvide, equals, getDefaultProviderId, getMasterKey, getMasterKeysForEncryption, hashCode, toString
    • Methods inherited from class com.amazonaws.encryptionsdk.MasterKeyProviderbuildCannotDecryptDksException, buildCannotDecryptDksException, buildCannotDecryptDksException, getMasterKey
    • Methods inherited from class java.lang.Objectclone, finalize, getClass, notify, notifyAll, wait, wait, wait

• • Constructor Detail
    • JceMasterKey

      protected JceMasterKey(String providerName,
                             String keyId,
                             JceKeyCipher jceKeyCipher)

  • Method Detail
    • getInstance

      public static JceMasterKey getInstance(SecretKey key,
                                             String provider,
                                             String keyId,
                                             String wrappingAlgorithm)

      Returns a JceMasterKey backed by the symmetric key key using wrappingAlgorithm. Currently "AES/GCM/NoPadding" is the only supported value for symmetric wrappingAlgorithms.

      Parameters:

      key - key used to wrap/unwrap (encrypt/decrypt) DataKeys

      provider -

      keyId -

      wrappingAlgorithm -

      Returns:

    • getInstance

      public static JceMasterKey getInstance(PublicKey wrappingKey,
                                             PrivateKey unwrappingKey,
                                             String provider,
                                             String keyId,
                                             String wrappingAlgorithm)

      Returns a

      JceMasterKey

      backed by the asymmetric key pair

      unwrappingKey

      and

      wrappingKey

      using

      wrappingAlgorithm

      . Currently only RSA algorithms are supported for asymmetric

      wrappingAlgorithm

      s. If

      unwrappingKey

      is

      null

      then the returned

      JceMasterKey

      can only be used for encryption.

      Parameters:

      wrappingKey - key used to wrap (encrypt) DataKeys

      unwrappingKey - (Optional) key used to unwrap (decrypt) DataKeys.

    • getProviderId

      public String getProviderId()

      Specified by:

      getProviderId in class MasterKey<JceMasterKey>

    • getKeyId

      public String getKeyId()

      Specified by:

      getKeyId in class MasterKey<JceMasterKey>

    • generateDataKey

      public DataKey<JceMasterKey> generateDataKey(CryptoAlgorithm algorithm,
                                                   Map<String,String> encryptionContext)

      Generates a new

      DataKey

      which is protected by this

      MasterKey

      for use with

      algorithm

      and associated with the provided

      encryptionContext

      .

      Specified by:

      generateDataKey in class MasterKey<JceMasterKey>

    • encryptDataKey

      public DataKey<JceMasterKey> encryptDataKey(CryptoAlgorithm algorithm,
                                                  Map<String,String> encryptionContext,
                                                  DataKey<?> dataKey)

      Returns a new copy of the provided

      dataKey

      which is protected by this

      MasterKey

      for use with

      algorithm

      and associated with the provided

      encryptionContext

      .

      Specified by:

      encryptDataKey in class MasterKey<JceMasterKey>

    • decryptDataKey

      public DataKey<JceMasterKey> decryptDataKey(CryptoAlgorithm algorithm,
                                                  Collection<? extends EncryptedDataKey> encryptedDataKeys,
                                                  Map<String,String> encryptionContext)
                                           throws UnsupportedProviderException,
                                                  AwsCryptoException

      Iterates through encryptedDataKeys and returns the first one which can be successfully decrypted.

      Specified by:

      decryptDataKey in class MasterKeyProvider<JceMasterKey>

      Returns:

      a DataKey if one can be decrypted, otherwise returns null

      Throws:

      UnsupportedProviderException - if the encryptedDataKey is associated with an unsupported provider

      CannotUnwrapDataKeyException - if the encryptedDataKey cannot be decrypted

      AwsCryptoException

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