Struct solders_keypair::presigner::Presigner

pub struct Presigner(pub Presigner);

A signer that represents a :class:~solders.signature.Signature that has been constructed externally. Performs a signature verification against the expected message upon sign() requests to affirm its relationship to the message bytes.

Args: pubkey (Pubkey): The pubkey of the signer. signature (Signature): The signature created by signing the message.

Tuple Fields

0: Presigner

Implementations

impl Presigner

pub fn new(pubkey: &Pubkey, signature: &Signature) -> Self

pub fn py_pubkey(&self) -> Pubkey

Get this signer’s :class:~solders.pubkey.Pubkey.

Returns: Pubkey: The pubkey of the presigner.

Example: >>> from solders.keypair import Keypair >>> from solders.pubkey import Pubkey >>> seed_bytes = bytes([0] * 32) >>> pubkey_bytes = b“;j’\xbc\xce\xb6\xa4-b\xa3\xa8\xd0*o\rse2\x15w\x1d\xe2C\xa6:\xc0H\xa1\x8bY\xda)“ >>> kp = Keypair.from_bytes(seed_bytes + pubkey_bytes) >>> assert kp.pubkey() == Pubkey(pubkey_bytes)

pub fn py_sign_message(&self, message: &[u8]) -> PyResult<Signature>

Verifies the signature of the presigner and returns it if valid.

Returns: Signature: The signature assigned to this object.

Raises: SignerError: if the signature is invalid.

Example:

>>> from solders.keypair import Keypair
>>> from solders.presigner import Presigner
>>> keypair = Keypair.from_seed(bytes([0] * 32))
>>> pubkey = keypair.pubkey()
>>> data = bytes([1])
>>> sig = keypair.sign_message(data)
>>> presigner = Presigner(pubkey, sig)
>>> assert presigner.pubkey() == pubkey
>>> assert presigner.sign_message(data) == sig

pub fn new_default() -> Self

Create a new default presigner.

Returns: Presigner: The default presigner.

pub fn __hash__(&self) -> u64

pub fn __richcmp__(&self, other: Signer, op: CompareOp) -> PyResult<bool>

Trait Implementations

impl Clone for Presigner

fn clone(&self) -> Presigner

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Presigner

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for Presigner

fn default() -> Presigner

Returns the “default value” for a type.

impl Display for Presigner

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl From<Presigner> for Presigner

fn from(signer: PresignerOriginal) -> Self

Converts to this type from the input type.

impl Hash for Presigner

fn hash<H: Hasher>(&self, state: &mut H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl IntoPy<Py<PyAny>> for Presigner

fn into_py(self, py: Python<'_>) -> PyObject

Performs the conversion.

impl PartialEq for Presigner

fn eq(&self, other: &Presigner) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PyClass for Presigner

type Frozen = False

Whether the pyclass is frozen.

impl PyClassImpl for Presigner

const IS_BASETYPE: bool = true

#[pyclass(subclass)]

const IS_SUBCLASS: bool = false

#[pyclass(extends=…)]

const IS_MAPPING: bool = false

#[pyclass(mapping)]

const IS_SEQUENCE: bool = false

#[pyclass(sequence)]

type Layout = PyCell<Presigner>

Layout

type BaseType = PyAny

Base class

type ThreadChecker = ThreadCheckerStub<Presigner>

This handles following two situations:

type PyClassMutability = <<PyAny as PyClassBaseType>::PyClassMutability as PyClassMutability>::MutableChild

Immutable or mutable

type Dict = PyClassDummySlot

Specify this class has #[pyclass(dict)] or not.

type WeakRef = PyClassDummySlot

Specify this class has #[pyclass(weakref)] or not.

type BaseNativeType = PyAny

The closest native ancestor. This is PyAny by default, and when you declare #[pyclass(extends=PyDict)], it’s PyDict.

fn items_iter() -> PyClassItemsIter

fn doc(py: Python<'_>) -> PyResult<&'static CStr>

Rendered class doc

fn lazy_type_object() -> &'static LazyTypeObject<Self>

fn dict_offset() -> Option<isize>

fn weaklist_offset() -> Option<isize>

impl PyClassNewTextSignature<Presigner> for PyClassImplCollector<Presigner>

fn new_text_signature(self) -> Option<&'static str>

impl<'a, 'py> PyFunctionArgument<'a, 'py> for &'a Presigner

type Holder = Option<PyRef<'py, Presigner>>

fn extract(obj: &'py PyAny, holder: &'a mut Self::Holder) -> PyResult<Self>

impl<'a, 'py> PyFunctionArgument<'a, 'py> for &'a mut Presigner

type Holder = Option<PyRefMut<'py, Presigner>>

fn extract(obj: &'py PyAny, holder: &'a mut Self::Holder) -> PyResult<Self>

impl PyHash for Presigner

fn pyhash(&self) -> u64

impl PyMethods<Presigner> for PyClassImplCollector<Presigner>

fn py_methods(self) -> &'static PyClassItems

impl PyTypeInfo for Presigner

type AsRefTarget = PyCell<Presigner>

Utility type to make Py::as_ref work.

const NAME: &'static str = "Presigner"

Class name.

const MODULE: Option<&'static str> = _

Module name, if any.

fn type_object_raw(py: Python<'_>) -> *mut PyTypeObject

Returns the PyTypeObject instance for this type.

fn type_object(py: Python<'_>) -> &PyType

Returns the safe abstraction over the type object.

fn is_type_of(object: &PyAny) -> bool

Checks if object is an instance of this type or a subclass of this type.

fn is_exact_type_of(object: &PyAny) -> bool

Checks if object is an instance of this type.

impl RichcmpSigner for Presigner

fn richcmp( &self, other: impl SignerTraitWrapper, op: CompareOp ) -> Result<bool, PyErr>

impl SignerTraitWrapper for Presigner

fn pubkey(&self) -> Pubkey

fn try_pubkey(&self) -> Result<Pubkey, SignerError>

fn sign_message(&self, message: &[u8]) -> Signature

fn try_sign_message(&self, message: &[u8]) -> Result<Signature, SignerError>

fn is_interactive(&self) -> bool

impl ToSignerOriginal for Presigner

fn to_inner(&self) -> Box<dyn SignerTrait>

impl StructuralPartialEq for Presigner