CrescendoDLL.PCSC.FIDODataStructures.COSEKey Class Reference

Represents a COSE (CBOR Object Signing and Encryption) key, as defined in FIDO CTAP2 Specification. This class is used to store cryptographic key information used in FIDO authentication. More...

Public Member Functions
	COSEKey (byte[] xCoordinate, byte[]? yCoordinate=null, int algorithm=-25, int curve=1, int keyType=2)
	Initializes a new instance of the COSEKey class.

Properties
int	Algorithm [get, set]
	Algorithm identifier - Corresponds to the COSE alg parameter (algorithm). Represents the cryptographic algorithm used with the key. For example, -25 for ES256 (ECDSA with SHA-256). See IANA COSE Algorithms registry.
int	Curve [get, set]
	Curve identifier - corresponds to the COSE crv parameter. Applies to both EC2 and OKP key types. For example, 1 for P-256, 6 for Ed25519, 7 for X25519. See IANA COSE Elliptic Curves registry.
int	KeyType [get, set]
	Key type - Corresponds to the COSE kty> parameter (key type). Common values: 1 for OKP (e.g. Ed25519), 2 for EC2 (e.g. P-256). See IANA COSE Key Types registry.
byte[]	XCoordinate [get, set]
	Byte array representing the X coordinate. Corresponds to the COSE x parameter.
byte?[]	YCoordinate [get, set]
	Byte array representing the Y coordinate. Corresponds to the COSE y parameter. null for OKP keys (e.g. Ed25519, kty=1) which carry only an X parameter.

Detailed Description

Represents a COSE (CBOR Object Signing and Encryption) key, as defined in FIDO CTAP2 Specification. This class is used to store cryptographic key information used in FIDO authentication.

Constructor & Destructor Documentation

COSEKey()

CrescendoDLL.PCSC.FIDODataStructures.COSEKey.COSEKey ( byte[]  xCoordinate, byte?[]  yCoordinate = null, int  algorithm = -25, int  curve = 1, int  keyType = 2  )

inline

Initializes a new instance of the COSEKey class.

Parameters

xCoordinate	The X coordinate (EC2) or public key bytes (OKP).
yCoordinate	The Y coordinate. Pass null for OKP keys (e.g. Ed25519) which have no Y parameter.
algorithm	Algorithm identifier - Corresponds to the COSE alg parameter (algorithm). Set to -25 (ECDSA with SHA-256) by default.
curve	Curve identifier - corresponds to the COSE crv parameter. Set to 1 (P-256) by default.
keyType	Key type - Corresponds to the COSE kty parameter (key type). Set to 2 (EC2) by default.

References CrescendoDLL.PCSC.FIDODataStructures.COSEKey.Algorithm, CrescendoDLL.PCSC.FIDODataStructures.COSEKey.Curve, CrescendoDLL.PCSC.FIDODataStructures.COSEKey.KeyType, CrescendoDLL.PCSC.FIDODataStructures.COSEKey.XCoordinate, and CrescendoDLL.PCSC.FIDODataStructures.COSEKey.YCoordinate.

Property Documentation

Algorithm

int CrescendoDLL.PCSC.FIDODataStructures.COSEKey.Algorithm

getset

Algorithm identifier - Corresponds to the COSE alg parameter (algorithm). Represents the cryptographic algorithm used with the key. For example, -25 for ES256 (ECDSA with SHA-256). See IANA COSE Algorithms registry.

Referenced by CrescendoDLL.PCSC.FIDODataStructures.COSEKey.COSEKey().

Curve

int CrescendoDLL.PCSC.FIDODataStructures.COSEKey.Curve

getset

Curve identifier - corresponds to the COSE crv parameter. Applies to both EC2 and OKP key types. For example, 1 for P-256, 6 for Ed25519, 7 for X25519. See IANA COSE Elliptic Curves registry.

Referenced by CrescendoDLL.PCSC.FIDODataStructures.COSEKey.COSEKey().

KeyType

int CrescendoDLL.PCSC.FIDODataStructures.COSEKey.KeyType

getset

Key type - Corresponds to the COSE kty> parameter (key type). Common values: 1 for OKP (e.g. Ed25519), 2 for EC2 (e.g. P-256). See IANA COSE Key Types registry.

Referenced by CrescendoDLL.PCSC.FIDODataStructures.COSEKey.COSEKey().

XCoordinate

byte [] CrescendoDLL.PCSC.FIDODataStructures.COSEKey.XCoordinate

getset

Byte array representing the X coordinate. Corresponds to the COSE x parameter.

Referenced by CrescendoDLL.PCSC.FIDODataStructures.COSEKey.COSEKey().

YCoordinate

byte? [] CrescendoDLL.PCSC.FIDODataStructures.COSEKey.YCoordinate

getset

Byte array representing the Y coordinate. Corresponds to the COSE y parameter. null for OKP keys (e.g. Ed25519, kty=1) which carry only an X parameter.

Referenced by CrescendoDLL.PCSC.FIDODataStructures.COSEKey.COSEKey().