CrescendoDLL.PCSC.FIDODataStructures.AuthenticatorData Class Reference

Authenticator Data structure as described in the [WebAuthn] (https://www.w3.org/TR/webauthn-2/#authenticator-data) specification. More...

Public Member Functions
	AuthenticatorData (byte[] authData)
	Parses the AuthData byte array received from the MakeCredentialResponse to a data-structure described in the WebAuthn specification.
byte[]	ToByteArray ()
	Converts the Authenticator Data structure to a byte array.

Properties
AttestedCredentialData?	AttestedCredentialData [get, set]
	Attested credential data (variable length, only present if AT flag is set)
byte?[]	Extensions [get, set]
	Extensions (variable length, CBOR-encoded, only present if ED flag is set)
AuthenticatorDataFlags	Flags [get, set]
	Flags indicating various states (1 byte)
byte[]	RpIdHash = default! [get, set]
	SHA-256 hash of the RP ID the credential is scoped to (32 bytes)
uint	SignatureCounter [get, set]
	Signature counter (4 bytes, big-endian)

Detailed Description

Authenticator Data structure as described in the [WebAuthn] (https://www.w3.org/TR/webauthn-2/#authenticator-data) specification.

Constructor & Destructor Documentation

AuthenticatorData()

CrescendoDLL.PCSC.FIDODataStructures.AuthenticatorData.AuthenticatorData ( byte[]  authData )

inline

Parses the AuthData byte array received from the MakeCredentialResponse to a data-structure described in the WebAuthn specification.

Parameters

authData

AuthData byte array received from the Authenticator.

Exceptions

ArgumentException

Thrown if the authData is shorter than 37 bytes.

Member Function Documentation

ToByteArray()

byte[] CrescendoDLL.PCSC.FIDODataStructures.AuthenticatorData.ToByteArray ( )

inline

Converts the Authenticator Data structure to a byte array.

Returns

The Authenticator Data as a byte array.

Property Documentation

AttestedCredentialData

AttestedCredentialData? CrescendoDLL.PCSC.FIDODataStructures.AuthenticatorData.AttestedCredentialData

getset

Attested credential data (variable length, only present if AT flag is set)

Extensions

byte? [] CrescendoDLL.PCSC.FIDODataStructures.AuthenticatorData.Extensions

getset

Extensions (variable length, CBOR-encoded, only present if ED flag is set)

Flags

AuthenticatorDataFlags CrescendoDLL.PCSC.FIDODataStructures.AuthenticatorData.Flags

getset

Flags indicating various states (1 byte)

RpIdHash

byte [] CrescendoDLL.PCSC.FIDODataStructures.AuthenticatorData.RpIdHash = default!

getset

SHA-256 hash of the RP ID the credential is scoped to (32 bytes)

SignatureCounter

uint CrescendoDLL.PCSC.FIDODataStructures.AuthenticatorData.SignatureCounter

getset

Signature counter (4 bytes, big-endian)