SkeinEngine Class

Implementation of the Skein family of parameterised hash functions in 256, 512 and 1024 bit block sizes, based on the Threefish tweakable block cipher.

Definition

Namespace: Org.BouncyCastle.Crypto.Digests
Assembly: BouncyCastle.Cryptography (in BouncyCastle.Cryptography.dll) Version: 2.3.0-beta.187+d6da5648ae

C#View Source Request Example

public class SkeinEngine : IMemoable

VBView Source Request Example

Public Class SkeinEngine
	Implements IMemoable

C++View Source Request Example

public ref class SkeinEngine : IMemoable

JavaScriptView Source Request Example

Org.BouncyCastle.Crypto.Digests.SkeinEngine = function();

Type.createClass(
	'Org.BouncyCastle.Crypto.Digests.SkeinEngine',
	null,
	Org.BouncyCastle.Utilities.IMemoable);

Inheritance: Object SkeinEngine

Implements: IMemoable

Remarks

This is the 1.3 version of Skein defined in the Skein hash function submission to the NIST SHA-3 competition in October 2010.

Skein was designed by Niels Ferguson - Stefan Lucks - Bruce Schneier - Doug Whiting - Mihir Bellare - Tadayoshi Kohno - Jon Callas - Jesse Walker.

This implementation is the basis for SkeinDigest and SkeinMac, implementing the parameter based configuration system that allows Skein to be adapted to multiple applications.
Initialising the engine with SkeinParameters allows standard and arbitrary parameters to be applied during the Skein hash function.

Implemented:

256, 512 and 1024 bit internal states.
Full 96 bit input length.
Parameters defined in the Skein specification, and arbitrary other pre and post message parameters.
Arbitrary output size in 1 byte intervals.

Not implemented:

Sub-byte length input (bit padding).
Tree hashing.

Constructors

SkeinEngine(SkeinEngine)	Creates a SkeinEngine as an exact copy of an existing instance.
SkeinEngine(Int32, Int32)	Constructs a Skein digest with an internal state size and output size.

Properties

BlockSize
OutputSize

Methods

BlockUpdate(ReadOnlySpanByte)
BlockUpdate(Byte, Int32, Int32)
Copy
DoFinal(SpanByte)
DoFinal(Byte, Int32)
Equals	Determines whether the specified object is equal to the current object. (Inherited from Object)
Finalize	Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object)
GetHashCode	Serves as the default hash function. (Inherited from Object)
GetType	Gets the Type of the current instance. (Inherited from Object)
Init	Initialises the Skein engine with the provided parameters. See SkeinParameters for details on the parameterisation of the Skein hash function.
MemberwiseClone	Creates a shallow copy of the current Object. (Inherited from Object)
Reset	Reset the engine to the initial state (with the key and any pre-message parameters , ready to accept message input.
Reset(IMemoable)
ToString	Returns a string that represents the current object. (Inherited from Object)
Update

Fields

SKEIN_1024	1024 bit block size - Skein-1024
SKEIN_256	256 bit block size - Skein-256
SKEIN_512	512 bit block size - Skein-512