Uses of Class java.security.KeyException (Java Platform SE 8 )
Date: 2026-04-17

## Uses of Class
java.security.KeyException

- Packages that use KeyException
  Package | Description
  --- | ---
  java.security | Provides the classes and interfaces for the security framework.
  javax.xml.crypto.dsig.keyinfo | Classes for parsing and processing `KeyInfo` elements and structures.

- - ### Uses of KeyException in java.security

    Subclasses of KeyException in java.security
    Modifier and Type | Class and Description
    --- | ---
    `class` | `InvalidKeyException` This is the exception for invalid Keys (invalid encoding, wrong length, uninitialized, etc).
    `class` | `KeyManagementException` This is the general key management exception for all operations dealing with key management.

    Methods in java.security that throw KeyException
    Modifier and Type | Method and Description
    --- | ---
    `void` | Certificate.`decode(InputStream stream)` Deprecated. Decodes a certificate from an input stream.
    `void` | Certificate.`encode(OutputStream stream)` Deprecated. Encodes the certificate to an output stream in a format that can be decoded by the `decode` method.
    `void` | Signer.`setKeyPair(KeyPair pair)` Deprecated. Sets the key pair (public key and private key) for this signer.

  - ### Uses of KeyException in javax.xml.crypto.dsig.keyinfo

    Methods in javax.xml.crypto.dsig.keyinfo that throw KeyException
    Modifier and Type | Method and Description
    --- | ---
    `PublicKey` | KeyValue.`getPublicKey()` Returns the public key of this `KeyValue`.
    `abstract KeyValue` | KeyInfoFactory.`newKeyValue(PublicKey key)` Creates a `KeyValue` from the specified public key.

Submit a bug or feature
For further API reference and developer documentation, see Java SE Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.
Copyright © 1993, 2026, Oracle and/or its affiliates. All rights reserved. Use is subject to license terms. Also see the documentation redistribution policy.