Class FfcSchemes

Namespace

Kdf108

Assembly

Kdf108.dll

The SP 800-56A Rev. 3 FFC key-agreement schemes, with the same methods as EcSchemes. Each returns the shared secret Z, which you must pass through an SP 800-56C KDF before use, then clear. For dependency injection and logging, use IFfcKeyAgreement.

public static class FfcSchemes

Inheritance

object

FfcSchemes

Inherited Members

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

object.ToString()

Remarks

Ephemeral is dhEphem, Static is dhStatic, OneFlow is dhOneFlow, Hybrid is dhHybrid1, HybridOneFlow is dhHybridOneFlow, Mqv2 is MQV2, and Mqv1 is MQV1.

Methods

Ephemeral(FfcEphemeralKeyPair, FfcEphemeralPublicKey)

dhEphem, C(2e, 0s): Z = FFC DH(local ephemeral, remote ephemeral).

public static byte[] Ephemeral(FfcEphemeralKeyPair localEphemeral, FfcEphemeralPublicKey remoteEphemeral)

Parameters

localEphemeral FfcEphemeralKeyPair

remoteEphemeral FfcEphemeralPublicKey

Returns

byte[]

Hybrid(FfcStaticKeyPair, FfcEphemeralKeyPair, FfcStaticPublicKey, FfcEphemeralPublicKey)

dhHybrid1, C(2e, 2s): Z = Ze || Zs.

public static byte[] Hybrid(FfcStaticKeyPair localStatic, FfcEphemeralKeyPair localEphemeral, FfcStaticPublicKey remoteStatic, FfcEphemeralPublicKey remoteEphemeral)

Parameters

localStatic FfcStaticKeyPair

localEphemeral FfcEphemeralKeyPair

remoteStatic FfcStaticPublicKey

remoteEphemeral FfcEphemeralPublicKey

Returns

byte[]

HybridOneFlowAsPartyU(FfcStaticKeyPair, FfcEphemeralKeyPair, FfcStaticPublicKey)

dhHybridOneFlow, C(1e, 2s), as party U: Z = DH(U's ephemeral, V's static) || DH(U's static, V's static).

public static byte[] HybridOneFlowAsPartyU(FfcStaticKeyPair localStatic, FfcEphemeralKeyPair localEphemeral, FfcStaticPublicKey remoteStatic)

Parameters

localStatic FfcStaticKeyPair

localEphemeral FfcEphemeralKeyPair

remoteStatic FfcStaticPublicKey

Returns

byte[]

HybridOneFlowAsPartyV(FfcStaticKeyPair, FfcStaticPublicKey, FfcEphemeralPublicKey)

dhHybridOneFlow, C(1e, 2s), as party V: Z = DH(V's static, U's ephemeral) || DH(V's static, U's static).

public static byte[] HybridOneFlowAsPartyV(FfcStaticKeyPair localStatic, FfcStaticPublicKey remoteStatic, FfcEphemeralPublicKey remoteEphemeral)

Parameters

localStatic FfcStaticKeyPair

remoteStatic FfcStaticPublicKey

remoteEphemeral FfcEphemeralPublicKey

Returns

byte[]

Mqv1AsPartyU(FfcStaticKeyPair, FfcEphemeralKeyPair, FfcStaticPublicKey)

MQV1, C(1e, 2s), as party U: V's static key stands in for V's ephemeral key.

public static byte[] Mqv1AsPartyU(FfcStaticKeyPair localStatic, FfcEphemeralKeyPair localEphemeral, FfcStaticPublicKey remoteStatic)

Parameters

localStatic FfcStaticKeyPair

localEphemeral FfcEphemeralKeyPair

remoteStatic FfcStaticPublicKey

Returns

byte[]

Mqv1AsPartyV(FfcStaticKeyPair, FfcStaticPublicKey, FfcEphemeralPublicKey)

MQV1, C(1e, 2s), as party V: V's static key stands in for its own ephemeral key.

public static byte[] Mqv1AsPartyV(FfcStaticKeyPair localStatic, FfcStaticPublicKey remoteStatic, FfcEphemeralPublicKey remoteEphemeral)

Parameters

localStatic FfcStaticKeyPair

remoteStatic FfcStaticPublicKey

remoteEphemeral FfcEphemeralPublicKey

Returns

byte[]

Mqv2(FfcStaticKeyPair, FfcEphemeralKeyPair, FfcStaticPublicKey, FfcEphemeralPublicKey)

MQV2, C(2e, 2s).

public static byte[] Mqv2(FfcStaticKeyPair localStatic, FfcEphemeralKeyPair localEphemeral, FfcStaticPublicKey remoteStatic, FfcEphemeralPublicKey remoteEphemeral)

Parameters

localStatic FfcStaticKeyPair

localEphemeral FfcEphemeralKeyPair

remoteStatic FfcStaticPublicKey

remoteEphemeral FfcEphemeralPublicKey

Returns

byte[]

OneFlowAsPartyU(FfcEphemeralKeyPair, FfcStaticPublicKey)

dhOneFlow, C(1e, 1s), as party U: Z = FFC DH(U's ephemeral, V's static).

public static byte[] OneFlowAsPartyU(FfcEphemeralKeyPair localEphemeral, FfcStaticPublicKey remoteStatic)

Parameters

localEphemeral FfcEphemeralKeyPair

remoteStatic FfcStaticPublicKey

Returns

byte[]

OneFlowAsPartyV(FfcStaticKeyPair, FfcEphemeralPublicKey)

dhOneFlow, C(1e, 1s), as party V: Z = FFC DH(V's static, U's ephemeral).

public static byte[] OneFlowAsPartyV(FfcStaticKeyPair localStatic, FfcEphemeralPublicKey remoteEphemeral)

Parameters

localStatic FfcStaticKeyPair

remoteEphemeral FfcEphemeralPublicKey

Returns

byte[]

Static(FfcStaticKeyPair, FfcStaticPublicKey)

dhStatic, C(0e, 2s): Z = FFC DH(local static, remote static).

public static byte[] Static(FfcStaticKeyPair localStatic, FfcStaticPublicKey remoteStatic)

Parameters

localStatic FfcStaticKeyPair

remoteStatic FfcStaticPublicKey

Returns

byte[]