Class EphermalKey

A short term key on a curve.

Inheritance

Object

EphermalKey

Inherited Members

Object.Equals(Object)

Object.Equals(Object, Object)

Object.GetHashCode()

Object.GetType()

Object.MemberwiseClone()

Object.ReferenceEquals(Object, Object)

Object.ToString()

Namespace: PeerTalk.Cryptography

Assembly: PeerTalk.dll

Syntax

public class EphermalKey

Remarks

Ephemeral keys are different from other keys in IPFS; they are NOT protobuf encoded and are NOT self describing. The encoding is an uncompressed ECPoint; the first byte s a 4 and followed by X and Y co-ordinates.

It as assummed that the curve name is known a priori.

Methods

CreatePublicKeyFromIpfs(String, Byte[])

Create a public key from the IPFS ephermal encoding.

Declaration

public static EphermalKey CreatePublicKeyFromIpfs(string curveName, byte[] bytes)

Parameters

Type	Name	Description
String	curveName	The name of the curve, for example "P-256".
Byte[]	bytes	The IPFS encoded ephermal key.

Returns

Type	Description
EphermalKey

Generate(String)

Create a new ephermal key on the curve.

Declaration

public static EphermalKey Generate(string curveName)

Parameters

Type	Name	Description
String	curveName	The name of the curve, for example "P-256".

Returns

Type	Description
EphermalKey	The new created emphermal key.

GenerateSharedSecret(EphermalKey)

Create a shared secret between this key and another.

Declaration

public byte[] GenerateSharedSecret(EphermalKey other)

Parameters

Type	Name	Description
EphermalKey	other	Another ephermal key.

Returns

Type	Description
Byte[]	The shared secret as a byte array.

Remarks

Uses the ECDH agreement algorithm to generate the shared secet.

PublicKeyBytes()

Gets the IPFS encoding of the public key.

Declaration

public byte[] PublicKeyBytes()

Returns

Type	Description
Byte[]	Returns the uncompressed EC point.