Sighash class

Implements the Signature Hash algorithm.

Depending on the Sighash flags specified in SighashType, this class will remove the parts of the transaction that should not be covered by the signature and calculates the hash value to be signed.

Basically what we do is :

1. Strip all the parts of the Transaction that should not be covered by the signature
2. Serialize the "stripped" Transaction
3. Calculate the double-sha256 of the serialized Transaction

Constructors

Sighash.new()

Calculates the hash value according to the Sighash flags specified in sighashType

Properties

hashCode → int

The hash code for this object.

no setter, inherited

preImage → Uint8List?

no setter

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

createSighashPreImage(Transaction txn, int sighashType, int inputNumber, SVScript subscript, BigInt? satoshis, {dynamic flags = _DEFAULT_SIGN_FLAGS}) → Uint8List?

Only call this for BitcoinSV where ForkId is assumed to be enabled ! It is assumed that the passed in subscript has NOT been prepared by stripping up to the first OP_CODE_SEPARATOR

getHash() → List<int>

hash(Transaction txn, int sighashType, int inputNumber, SVScript subscript, BigInt? satoshis, {dynamic flags = _DEFAULT_SIGN_FLAGS}) → String

Calling this method presumes that the subscript has already been prepared by stripping off all code up to and including the first OP_CODESEPARATOR

override

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

stripUptoFirstCodeSep(SVScript subscriptCopy) → SVScript

toString() → String

Returns the hexadecimal String of the signature hash

override

Operators

operator ==(Object other) → bool

The equality operator.

inherited