Uses of Class javax.crypto.Cipher (Java Platform SE 8 )
Date: 2026-06-25

## Uses of Class
javax.crypto.Cipher

- Packages that use Cipher
  Package | Description
  --- | ---
  javax.crypto | Provides the classes and interfaces for cryptographic operations.

- - ### Uses of Cipher in javax.crypto

    Subclasses of Cipher in javax.crypto
    Modifier and Type | Class and Description
    --- | ---
    `class` | `NullCipher` The NullCipher class is a class that provides an "identity cipher" -- one that does not transform the plain text.

    Methods in javax.crypto that return Cipher
    Modifier and Type | Method and Description
    --- | ---
    `static Cipher` | Cipher.`getInstance(String transformation)` Returns a `Cipher` object that implements the specified transformation.
    `static Cipher` | Cipher.`getInstance(String transformation, Provider provider)` Returns a `Cipher` object that implements the specified transformation.
    `static Cipher` | Cipher.`getInstance(String transformation, String provider)` Returns a `Cipher` object that implements the specified transformation.

    Methods in javax.crypto with parameters of type Cipher
    Modifier and Type | Method and Description
    --- | ---
    `PKCS8EncodedKeySpec` | EncryptedPrivateKeyInfo.`getKeySpec(Cipher cipher)` Extract the enclosed PKCS8EncodedKeySpec object from the encrypted data and return it.
    `Object` | SealedObject.`getObject(Cipher c)` Retrieves the original (encapsulated) object.

    Constructors in javax.crypto with parameters of type Cipher
    Constructor and Description
    `CipherInputStream(InputStream is, Cipher c)` Constructs a CipherInputStream from an InputStream and a Cipher.
    `CipherOutputStream(OutputStream os, Cipher c)` Constructs a CipherOutputStream from an OutputStream and a Cipher.
    `SealedObject(Serializable object, Cipher c)` Constructs a SealedObject from any Serializable object.

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.