CoseEdDsaPublicKey Class

Namespace: Yubico.YubiKey.Fido2.Cose Assembly: Yubico.YubiKey.dll

A representation of an Elliptic Curve public key in COSE form.

C#

public class CoseEdDsaPublicKey : CoseKey

Inheritance object CoseKey CoseEdDsaPublicKey

Remarks

An ECC public key consists of a curve and public key data. In FIDO2, the curve is represented by the CoseAlgorithmIdentifier .

The FIDO2 standard also specifies an encoding of the public key information. It uses the representation defined in RFC8152: CBOR Object Signing and Encryption (COSE) standard. Supplementary information can be found in section 6.5.6 of the CTAP2.1 specification (under the heading `getPublicKey()`).

Properties

Name	Description
Curve	The Elliptic Curve that the key resides on.
PublicKey	The public key data.

Methods

Name	Description
CreateFromEncodedKey(ReadOnlyMemory<byte>)	Creates a new instance of CoseEdDsaPublicKey from the given encoded COSE key.
CreateFromPublicKeyData(ReadOnlyMemory<byte>)	Construct a CoseEdDsaPublicKey based on public key data (x-coordinate of public key)
Encode()	Return a new byte array that is the key data encoded following the FIDO2/CBOR standard.