Class OneStepFunction

Namespace

Kdf108

Assembly

Kdf108.dll

The auxiliary function H for SP 800-56C Rev. 2 one-step key derivation (§4.1).

public sealed class OneStepFunction

Inheritance

object

OneStepFunction

Inherited Members

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.ReferenceEquals(object, object)

Properties

Hash

The hash for options 1 and 2, or null for KMAC.

public NistHashAlgorithm? Hash { get; }

Property Value

NistHashAlgorithm?

IsHmac

true for option 2, HMAC.

public bool IsHmac { get; }

Property Value

bool

Kmac

The KMAC variant for option 3, or null.

public KmacVariant? Kmac { get; }

Property Value

KmacVariant?

Methods

HashFunction(NistHashAlgorithm)

Option 1: H(x) = hash(x).

public static OneStepFunction HashFunction(NistHashAlgorithm hash)

Parameters

hash NistHashAlgorithm

Returns

OneStepFunction

Hmac(NistHashAlgorithm, ReadOnlySpan<byte>)

Option 2: H(x) = HMAC-hash(salt, x). An empty salt means the default: a block of zero bytes.

public static OneStepFunction Hmac(NistHashAlgorithm hash, ReadOnlySpan<byte> salt = default)

Parameters

hash NistHashAlgorithm

salt ReadOnlySpan<byte>

Returns

OneStepFunction

KmacFunction(KmacVariant, ReadOnlySpan<byte>)

Option 3: H(x) = KMAC(salt, x, L, "KDF"). An empty salt means the default: 164 zero bytes for KMAC128 or 132 for KMAC256. L must be a whole number of bytes.

public static OneStepFunction KmacFunction(KmacVariant variant, ReadOnlySpan<byte> salt = default)

Parameters

variant KmacVariant

salt ReadOnlySpan<byte>

Returns

OneStepFunction

ToString()

Returns a string that represents the current object.

public override string ToString()

Returns

string

A string that represents the current object.