NullCipher Class
Definition
Important
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The NullCipher class is a class that provides an "identity cipher" -- one that does not transform the plain text.
[Android.Runtime.Register("javax/crypto/NullCipher", DoNotGenerateAcw=true)]
public class NullCipher : Javax.Crypto.Cipher[<Android.Runtime.Register("javax/crypto/NullCipher", DoNotGenerateAcw=true)>]
type NullCipher = class
inherit Cipher- Inheritance
- Attributes
Remarks
The NullCipher class is a class that provides an "identity cipher" -- one that does not transform the plain text. As a consequence, the ciphertext is identical to the plaintext. All initialization methods do nothing, while the blocksize is set to 1 byte.
Added in 1.4.
Java documentation for javax.crypto.NullCipher.
Portions of this page are modifications based on work created and shared by the Android Open Source Project and used according to terms described in the Creative Commons 2.5 Attribution License.
Constructors
| NullCipher() |
Creates a NullCipher object. |
| NullCipher(IntPtr, JniHandleOwnership) |
A constructor used when creating managed representations of JNI objects; called by the runtime. |
Fields
| DecryptMode |
Obsolete.
Constant used to initialize cipher to decryption mode. (Inherited from Cipher) |
| EncryptMode |
Obsolete.
Constant used to initialize cipher to encryption mode. (Inherited from Cipher) |
| PrivateKey |
Obsolete.
Constant used to indicate the to-be-unwrapped key is a "private key". (Inherited from Cipher) |
| PublicKey |
Obsolete.
Constant used to indicate the to-be-unwrapped key is a "public key". (Inherited from Cipher) |
| SecretKey |
Obsolete.
Constant used to indicate the to-be-unwrapped key is a "secret key". (Inherited from Cipher) |
| UnwrapMode |
Obsolete.
Constant used to initialize cipher to key-unwrapping mode. (Inherited from Cipher) |
| WrapMode |
Obsolete.
Constant used to initialize cipher to key-wrapping mode. (Inherited from Cipher) |
Properties
| Algorithm |
Returns the algorithm name of this |
| BlockSize |
Returns the block size (in bytes). (Inherited from Cipher) |
| Class |
Returns the runtime class of this |
| ExemptionMechanism |
Returns the exemption mechanism object used with this cipher. (Inherited from Cipher) |
| Handle |
The handle to the underlying Android instance. (Inherited from Object) |
| JniIdentityHashCode | (Inherited from Object) |
| JniPeerMembers | |
| Parameters |
Returns the parameters used with this cipher. (Inherited from Cipher) |
| PeerReference | (Inherited from Object) |
| Provider |
Returns the provider of this |
| ThresholdClass |
This API supports the Mono for Android infrastructure and is not intended to be used directly from your code. |
| ThresholdType |
This API supports the Mono for Android infrastructure and is not intended to be used directly from your code. |
Methods
| Clone() |
Creates and returns a copy of this object. (Inherited from Object) |
| Dispose() | (Inherited from Object) |
| Dispose(Boolean) | (Inherited from Object) |
| DoFinal() |
Finishes a multiple-part encryption or decryption operation, depending on how this cipher was initialized. (Inherited from Cipher) |
| DoFinal(Byte[], Int32, Int32, Byte[], Int32) |
Encrypts or decrypts data in a single-part operation, or finishes a multiple-part operation. (Inherited from Cipher) |
| DoFinal(Byte[], Int32, Int32, Byte[]) |
Encrypts or decrypts data in a single-part operation, or finishes a multiple-part operation. (Inherited from Cipher) |
| DoFinal(Byte[], Int32, Int32) |
Encrypts or decrypts data in a single-part operation, or finishes a multiple-part operation. (Inherited from Cipher) |
| DoFinal(Byte[], Int32) |
Finishes a multiple-part encryption or decryption operation, depending on how this cipher was initialized. (Inherited from Cipher) |
| DoFinal(Byte[]) |
Encrypts or decrypts data in a single-part operation, or finishes a multiple-part operation. (Inherited from Cipher) |
| DoFinal(ByteBuffer, ByteBuffer) |
Encrypts or decrypts data in a single-part operation, or finishes a multiple-part operation. (Inherited from Cipher) |
| Equals(Object) |
Indicates whether some other object is "equal to" this one. (Inherited from Object) |
| GetHashCode() |
Returns a hash code value for the object. (Inherited from Object) |
| GetIV() |
Returns the initialization vector (IV) in a new buffer. (Inherited from Cipher) |
| GetOutputSize(Int32) |
Returns the length in bytes that an output buffer would need to be in
order to hold the result of the next |
| Init(CipherMode, Certificate, SecureRandom) |
Initializes this cipher with the public key from the given certificate and a source of randomness. (Inherited from Cipher) |
| Init(CipherMode, Certificate) |
Initializes this cipher with the public key from the given certificate. (Inherited from Cipher) |
| Init(CipherMode, IKey, AlgorithmParameters, SecureRandom) |
Initializes this cipher with a key, a set of algorithm parameters, and a source of randomness. (Inherited from Cipher) |
| Init(CipherMode, IKey, AlgorithmParameters) |
Initializes this cipher with a key and a set of algorithm parameters. (Inherited from Cipher) |
| Init(CipherMode, IKey, IAlgorithmParameterSpec, SecureRandom) |
Initializes this cipher with a key, a set of algorithm parameters, and a source of randomness. (Inherited from Cipher) |
| Init(CipherMode, IKey, IAlgorithmParameterSpec) |
Initializes this cipher with a key and a set of algorithm parameters. (Inherited from Cipher) |
| Init(CipherMode, IKey, SecureRandom) |
Initializes this cipher with a key and a source of randomness. (Inherited from Cipher) |
| Init(CipherMode, IKey) |
Initializes this cipher with a key. (Inherited from Cipher) |
| JavaFinalize() |
Called by the garbage collector on an object when garbage collection determines that there are no more references to the object. (Inherited from Object) |
| Notify() |
Wakes up a single thread that is waiting on this object's monitor. (Inherited from Object) |
| NotifyAll() |
Wakes up all threads that are waiting on this object's monitor. (Inherited from Object) |
| SetHandle(IntPtr, JniHandleOwnership) |
Sets the Handle property. (Inherited from Object) |
| ToArray<T>() | (Inherited from Object) |
| ToString() |
Returns a string representation of the object. (Inherited from Object) |
| UnregisterFromRuntime() | (Inherited from Object) |
| Unwrap(Byte[], String, KeyType) |
Unwrap a previously wrapped key. (Inherited from Cipher) |
| Update(Byte[], Int32, Int32, Byte[], Int32) |
Continues a multiple-part encryption or decryption operation (depending on how this cipher was initialized), processing another data part. (Inherited from Cipher) |
| Update(Byte[], Int32, Int32, Byte[]) |
Continues a multiple-part encryption or decryption operation (depending on how this cipher was initialized), processing another data part. (Inherited from Cipher) |
| Update(Byte[], Int32, Int32) |
Continues a multiple-part encryption or decryption operation (depending on how this cipher was initialized), processing another data part. (Inherited from Cipher) |
| Update(Byte[]) |
Continues a multiple-part encryption or decryption operation (depending on how this cipher was initialized), processing another data part. (Inherited from Cipher) |
| Update(ByteBuffer, ByteBuffer) |
Continues a multiple-part encryption or decryption operation (depending on how this cipher was initialized), processing another data part. (Inherited from Cipher) |
| UpdateAAD(Byte[], Int32, Int32) |
Continues a multi-part update of the Additional Authentication Data (AAD), using a subset of the provided buffer. (Inherited from Cipher) |
| UpdateAAD(Byte[]) |
Continues a multi-part update of the Additional Authentication Data (AAD). (Inherited from Cipher) |
| UpdateAAD(ByteBuffer) |
Continues a multi-part update of the Additional Authentication Data (AAD). (Inherited from Cipher) |
| Wait() |
Causes the current thread to wait until it is awakened, typically by being <em>notified</em> or <em>interrupted</em>. (Inherited from Object) |
| Wait(Int64, Int32) |
Causes the current thread to wait until it is awakened, typically by being <em>notified</em> or <em>interrupted</em>, or until a certain amount of real time has elapsed. (Inherited from Object) |
| Wait(Int64) |
Causes the current thread to wait until it is awakened, typically by being <em>notified</em> or <em>interrupted</em>, or until a certain amount of real time has elapsed. (Inherited from Object) |
| Wrap(IKey) |
Wrap a key. (Inherited from Cipher) |
Explicit Interface Implementations
| IJavaPeerable.Disposed() | (Inherited from Object) |
| IJavaPeerable.DisposeUnlessReferenced() | (Inherited from Object) |
| IJavaPeerable.Finalized() | (Inherited from Object) |
| IJavaPeerable.JniManagedPeerState | (Inherited from Object) |
| IJavaPeerable.SetJniIdentityHashCode(Int32) | (Inherited from Object) |
| IJavaPeerable.SetJniManagedPeerState(JniManagedPeerStates) | (Inherited from Object) |
| IJavaPeerable.SetPeerReference(JniObjectReference) | (Inherited from Object) |
Extension Methods
| JavaCast<TResult>(IJavaObject) |
Performs an Android runtime-checked type conversion. |
| JavaCast<TResult>(IJavaObject) | |
| GetJniTypeName(IJavaPeerable) | |