Class HMACGost3411_2012_512

Inheritance
object
HashAlgorithm
KeyedHashAlgorithm
HMAC
HMACGost3411_2012_512
Implements
Inherited Members
Namespace: CryptoPro.Security.Cryptography
Assembly: CryptoPro.Security.Cryptography.dll
Syntax
public class HMACGost3411_2012_512 : HMAC, ICryptoTransform, IDisposable

Constructors

HMACGost3411_2012_512()

Declaration
public HMACGost3411_2012_512()

HMACGost3411_2012_512(Gost28147?)

Declaration
public HMACGost3411_2012_512(Gost28147? key)
Parameters
Type Name Description
Gost28147 key

Properties

Key

Gets or sets the key to use in the HMAC calculation.

Declaration
public override byte[] Key { get; set; }
Property Value
Type Description
byte[]

The key to use in the HMAC calculation.
Overrides
Exceptions
Type Condition
CryptographicException

An attempt is made to change the Key property after hashing has begun.

Methods

Dispose(bool)

Releases the unmanaged resources used by the HMAC class when a key change is legitimate and optionally releases the managed resources.

Declaration
protected override void Dispose(bool disposing)
Parameters
Type Name Description
bool disposing

true to release both managed and unmanaged resources; false to release only unmanaged resources.
Overrides

HashCore(byte[], int, int)

When overridden in a derived class, routes data written to the object into the HMAC algorithm for computing the HMAC value.

Declaration
protected override void HashCore(byte[] rgb, int ib, int cb)
Parameters
Type Name Description
byte[] rgb

The input data.
int ib

The offset into the byte array from which to begin using data.
int cb

The number of bytes in the array to use as data.
Overrides

HashCore(ReadOnlySpan<byte>)

Routes data written to the object into the HMAC algorithm for computing the HMAC.

Declaration
protected override void HashCore(ReadOnlySpan<byte> source)
Parameters
Type Name Description
ReadOnlySpan<byte> source

The input to compute the HMAC code for.
Overrides
Exceptions
Type Condition
PlatformNotSupportedException

In all cases.

HashFinal()

When overridden in a derived class, finalizes the HMAC computation after the last data is processed by the algorithm.

Declaration
protected override byte[] HashFinal()
Returns
Type Description
byte[]

The computed HMAC value in a byte array.
Overrides

Initialize()

Initializes an instance of the default implementation of HMAC.

Declaration
public override void Initialize()
Overrides

TryHashFinal(Span<byte>, out int)

Attempts to finalize the HMAC computation after the last data is processed by the HMAC algorithm.

Declaration
protected override bool TryHashFinal(Span<byte> destination, out int bytesWritten)
Parameters
Type Name Description
Span<byte> destination

The buffer to receive the HMAC value.
int bytesWritten

When this method returns, the total number of bytes written into destination. This parameter is treated as uninitialized.
Returns
Type Description
bool

true if destination is long enough to receive the HMAC value; otherwise, false.
Overrides
Exceptions
Type Condition
PlatformNotSupportedException

The method is not overriden in the derived type.

Implements