CrescendoDLL.PCSC.FIDODataStructures.GetAssertionResponse Class Reference

Represents the response from a FIDO CTAP2 authenticatorGetAssertion command. More...

Properties
byte[]	AuthData = default! [get, set]
	Authenticator data containing authentication context.
PublicKeyCredentialDescriptor	Credential = default! [get, set]
	Credential used for the assertion. Required parameter (CTAP2 key: 0x01). Contains the credential identifier that was used to generate the assertion.
byte?[]	LargeBlobKey [get, set]
	Large blob encryption key (CTAP.1+). Optional parameter (CTAP2 key: 0x07). Present when using the largeBlobKey extension. Allows decrypting stored blobs associated with the credential.
int?	NumberOfCredentials [get, set]
	Number of matching credentials remaining. Optional parameter (CTAP2 key: 0x05). Indicates remaining credentials when using authenticatorGetNextAssertion for multi-credential workflows.
byte[]	Signature = default! [get, set]
	Cryptographic signature over the assertion. Required parameter (CTAP2 key: 0x03). Signature generated using the credential private key over concatenated authData and clientDataHash.
PublicKeyCredentialUserEntity?	User [get, set]
	User account information (for multi-credential selection). Optional parameter (CTAP2 key: 0x04). Present when multiple credentials match and user interaction selects one. Contains user handle and display information.
bool?	UserSelected [get, set]
	Indicates if user explicitly selected credential. Optional parameter (CTAP2 key: 0x06). True when user interaction was required to select between multiple matching credentials.

Detailed Description

Represents the response from a FIDO CTAP2 authenticatorGetAssertion command.

Property Documentation

AuthData

byte [] CrescendoDLL.PCSC.FIDODataStructures.GetAssertionResponse.AuthData = default!

getset

Authenticator data containing authentication context.

Required parameter (CTAP2 key: 0x02). Byte array containing:

• RP ID hash
• Flags (user presence/verification)
• Signature counter
• Optional attested credential data

Credential

PublicKeyCredentialDescriptor CrescendoDLL.PCSC.FIDODataStructures.GetAssertionResponse.Credential = default!

getset

Credential used for the assertion. Required parameter (CTAP2 key: 0x01). Contains the credential identifier that was used to generate the assertion.

LargeBlobKey

byte? [] CrescendoDLL.PCSC.FIDODataStructures.GetAssertionResponse.LargeBlobKey

getset

Large blob encryption key (CTAP.1+). Optional parameter (CTAP2 key: 0x07). Present when using the largeBlobKey extension. Allows decrypting stored blobs associated with the credential.

NumberOfCredentials

int? CrescendoDLL.PCSC.FIDODataStructures.GetAssertionResponse.NumberOfCredentials

getset

Number of matching credentials remaining. Optional parameter (CTAP2 key: 0x05). Indicates remaining credentials when using authenticatorGetNextAssertion for multi-credential workflows.

Signature

byte [] CrescendoDLL.PCSC.FIDODataStructures.GetAssertionResponse.Signature = default!

getset

Cryptographic signature over the assertion. Required parameter (CTAP2 key: 0x03). Signature generated using the credential private key over concatenated authData and clientDataHash.

User

PublicKeyCredentialUserEntity? CrescendoDLL.PCSC.FIDODataStructures.GetAssertionResponse.User

getset

User account information (for multi-credential selection). Optional parameter (CTAP2 key: 0x04). Present when multiple credentials match and user interaction selects one. Contains user handle and display information.

UserSelected

bool? CrescendoDLL.PCSC.FIDODataStructures.GetAssertionResponse.UserSelected

getset

Indicates if user explicitly selected credential. Optional parameter (CTAP2 key: 0x06). True when user interaction was required to select between multiple matching credentials.