multipaz/org.multipaz.presentment/TransactionData

TransactionData

class TransactionData<PayloadT : Any>(val type: TransactionType<PayloadT>, val payload: PayloadT, val protocol: TransactionProtocol, val rawBytes: ByteString, val hashAlgorithms: List<Algorithm>? = null)

An object that holds transaction data.

Transaction data is held in two representation: serialized and parsed. Serialized representation is raw sequence of bytes that reflects how transaction data is encoded in the verification protocol. Parsed representation includes transaction type that describes what kind of transaction this is, the list of hash algorithms that the verifier accepts for this transaction, and transaction payload which is transaction-type-specific data.

Parameters

type

type of the transaction data item

payload

transaction payload

protocol

protocol context in which the transaction data was received

rawBytes

raw sequence of bytes representing the transaction data in the request

hashAlgorithms

accepted hash algorithm override list for this transaction data

Constructors

TransactionData

constructor(type: TransactionType<PayloadT>, payload: PayloadT, protocol: TransactionProtocol, rawBytes: ByteString, hashAlgorithms: List<Algorithm>? = null)

Properties

val hashAlgorithms: List<Algorithm>?

val payload: PayloadT

val protocol: TransactionProtocol

val rawBytes: ByteString

val type: TransactionType<PayloadT>

Functions

suspend fun computeHash(algorithm: Algorithm = Algorithm.SHA256): ByteString

Computes hash of the transaction data.

generateMdocResponseElements

suspend fun generateMdocResponseElements(credential: Credential, userInput: TransactionUserInput?, docRequestId: Int? = null): Map<String, DataItem>

Generates device-signed data elements for an Mdoc credential.

generateSdJwtResponseClaims

suspend fun generateSdJwtResponseClaims(credential: Credential, userInput: TransactionUserInput?, docRequestId: Int? = null): Map<String, JsonElement>

Generates Key Binding JWT claims for an SD-JWT credential.

suspend fun isApplicable(credential: Credential): Boolean

Determines if this transaction is applicable to the given credential.

serializeIso18013Request

fun serializeIso18013Request(): DataItem

Creates equivalent transaction data for use in ISO 18013-5 protocols.

verifyMdocResponse

suspend fun verifyMdocResponse(responseElements: Map<String, DataItem>)

Verifies transaction response returned in an Mdoc presentation.

verifySdJwtResponse

suspend fun verifySdJwtResponse(responseClaims: Map<String, JsonElement>)

Verifies transaction response returned in an SD-JWT presentation.