LogicSignature class

Most Algorand transactions are authorized by a signature from a single account or a multisignature account.

Algorand’s stateful smart contracts allow for a third type of signature using a Transaction Execution Approval Language (TEAL) program, called a logic signature (LogicSig).

Stateless smart contracts provide two modes for TEAL logic to operate as a LogicSig, to create a contract account that functions similar to an escrow or to delegate signature authority to another account.

More information, see https://developer.algorand.org/docs/features/asc1/stateless/sdks/

Annotations

• @JsonSerializable(fieldRename: FieldRename.kebab)

Constructors

LogicSignature({required Uint8List logic, List<Uint8List>? arguments, Signature? signature, MultiSignature? multiSignature})

Create a new logic signature. Throws an AlgorandException if unable to check the logic.

LogicSignature.fromJson(Map<String, dynamic> json)

factory

LogicSignature.fromProgram({required TEALProgram program, List<Uint8List>? arguments, Signature? signature})

Create a new logic signature from a given TEAL program. Throws an AlgorandException if unable to check the logic.

Properties

arguments → List<Uint8List>?

final

hashCode → int

The hash code for this object.

no setter, inherited

logic → Uint8List

final

multiSignature → MultiSignature?

final

props → List<Object?>

The list of properties that will be used to determine whether two instances are equal.

no setter

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

signature → Signature?

final

stringify → bool?

If set to true, the toString method will be overridden to output this instance's props.

no setter, inherited

Methods

append({required Account account}) → Future<LogicSignature>

Appends a signature to multisig logic signed transaction

copyWith({Uint8List? logic, List<Uint8List>? arguments, Signature? signature, MultiSignature? multiSignature}) → LogicSignature

getEncodedProgram() → Uint8List

Get the encoded representation of the program with a prefix suitable for signing.

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

sign({required Account account, MultiSigAddress? multiSigAddress}) → Future<LogicSignature>

Sign a logic signature with account secret key.

signTransaction({required RawTransaction transaction}) → Future<SignedTransaction>

Create a signed transaction from a LogicSignature and transaction. LogicSignature must be valid and verifiable against transaction sender field.

toAddress() → Address

Generate escrow address from logic sig program. Returns the address for the encoded program.

toBase64() → String

Get the base64-encoded representation of the transaction..

toJson() → Map<String, dynamic>

toMessagePack() → Map<String, dynamic>

toString() → String

A string representation of this object.

inherited

verify(Address address) → Future<bool>

Perform signature verification against the sender address.

Operators

operator ==(Object other) → bool

The equality operator.

inherited

Constants

LOGIC_PREFIX → const String