docs/net.corda.core.contracts/SignatureAttachmentConstraint

SignatureAttachmentConstraint

data class SignatureAttachmentConstraint(val key: PublicKey) : AttachmentConstraint

An AttachmentConstraint that verifies that the attachment has signers that fulfil the provided PublicKey. See: Signature Constraints

Constructors

constructor(key: PublicKey)

Types

Companion

object Companion : Internable<SignatureAttachmentConstraint>

Properties

key

val key: PublicKey

A PublicKey that must be fulfilled by the owning keys of the attachment's signing parties.

Functions

canBeTransitionedFrom

fun AttachmentConstraint.canBeTransitionedFrom(input: AttachmentConstraint, attachment: ContractAttachment): Boolean

This method will be used in conjunction with NoConstraintPropagation. It is run during transaction verification when the contract is not annotated with NoConstraintPropagation. When constraints propagation is enabled, constraints set on output states need to follow certain rules with regards to constraints of input states.

isSatisfiedBy

open override fun isSatisfiedBy(attachment: Attachment): Boolean

Returns whether the given contract attachment can be used with the ContractState associated with this constraint object.