SVSignature class - dartsv library

Constructors

SVSignature.fromCompact(List<int> buffer, List<int> signedMessage): Construct the Signature and recover the public key. With the public key recovered we can use this signature for verification only
SVSignature.fromDER(String derBuffer, {SVPublicKey? publicKey = null}): Constructs a signature from it's DER-encoded form
SVSignature.fromECParams(BigInt? _r, BigInt? _s): Construct a instance from the R and S components of an ECDSA signature.
SVSignature.fromPrivateKey(SVPrivateKey privateKey): Construct a signature instance from a PrivateKey for signing purposes.
SVSignature.fromPublicKey(SVPublicKey publicKey): Constructs a signature instance from PublicKey for verification ONLY.
SVSignature.fromTxFormat(String buffer): Constructs a signature for it's bitcoin-transaction-encoded form.

hashCode → int: The hash code for this object.
no setterinherited
nhashtype ↔ int: Returns the SighashType value that was detected with fromTxFormat() constructor
getter/setter pair
publicKey → SVPublicKey: Returns the public key that will be used to verify signatures
no setter
r → BigInt: Returns the signature's R value
no setter
rHex → String: Returns the signature's R value as a hexadecimal string
no setter
runtimeType → Type: A representation of the runtime type of the object.
no setterinherited
s → BigInt: Returns the signature's S value
no setter
sHex → String: Returns the signature's S value as a hexadecimal string
no setter

hasDefinedHashtype() → bool: Returns true if the hashType is exactly equal to one of the standard options or combinations thereof. Translated from bitcoind's IsDefinedHashtypeSignature
hasLowS() → bool: Comparable to bitcoind's IsLowDERSignature. Returns true if the signature has a 'low' S-value.
noSuchMethod(Invocation invocation) → dynamic: Invoked when a nonexistent method or property is accessed.
inherited
sign(String message, {bool forCompact = false}) → String: Signs a message and optionally also calculates the first byte needed for compact format rendering.
toCompact() → List<int>: Renders the signature in compact form.
toDER() → List<int>: Renders the signature as a DER-encoded byte buffer
toString() → String: A string representation of this object.
override
toTxFormat() → String: Returns the signature in standard DER format, with the SighashType value appended
verify(String message) → bool: Verify that the provided message was signed using this signature

hasForkId(List<int> sigBytes) → bool
isTxDER(String buffer) → bool: ported from moneybutton/bsv This function is translated from bitcoind's IsDERSignature and is used in the script interpreter. This 'DER' format actually includes an extra byte, the nhashtype, at the end. It is really the tx format, not DER format.