Enum VerifySignature 

pub enum VerifySignature<T>
where
    T: Config + Send + Sync,
{
    Disabled,
    Signed {
        signature: T::Signature,
        account: T::AccountId,
    },
}

Extension that, if enabled, validates a signature type against the payload constructed from the call and the rest of the transaction extension pipeline. This extension provides the functionality that traditionally signed transactions had with the implicit signature checking implemented in Checkable. It is meant to be placed ahead of any other extensions that do authorization work in the [TransactionExtension] pipeline.

The variants are ordered so that the Disabled (passthrough) state encodes as the SCALE byte 0x00, which is compatible with current signers and wallets.

Variants

Disabled

The extension is disabled and will be passthrough.

Signed

The extension will verify the signature and, if successful, authorize a traditionally signed transaction.

Fields

signature: T::Signature

The signature provided by the transaction submitter.

account: T::AccountId

The account that signed the payload.

Implementations

impl<T> VerifySignature<T>

where T: Config + Send + Sync,

pub fn new_with_signature( signature: T::Signature, account: T::AccountId, ) -> Self

Create a new extension instance that will validate the provided signature.

pub fn new_disabled() -> Self

Create a new passthrough extension instance.

Trait Implementations

impl<T> Clone for VerifySignature<T>

where T: Config + Send + Sync + Clone, T::Signature: Clone, T::AccountId: Clone,

fn clone(&self) -> VerifySignature<T>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<T> Debug for VerifySignature<T>

where T: Config + Send + Sync,

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

Formats the value using the given formatter.

impl<T> Decode for VerifySignature<T>

where T: Config + Send + Sync, T::Signature: Decode, T::AccountId: Decode,

fn decode<__CodecInputEdqy: Input>( __codec_input_edqy: &mut __CodecInputEdqy, ) -> Result<Self, Error>

Attempt to deserialise the value from input.

fn decode_into<I>( input: &mut I, dst: &mut MaybeUninit<Self>, ) -> Result<DecodeFinished, Error>

where I: Input,

Attempt to deserialize the value from input into a pre-allocated piece of memory.

fn skip<I>(input: &mut I) -> Result<(), Error>

where I: Input,

Attempt to skip the encoded value from input.

fn encoded_fixed_size() -> Option<usize>

Returns the fixed encoded size of the type.

impl<T> Default for VerifySignature<T>

where T: Config + Send + Sync,

fn default() -> VerifySignature<T>

Returns the “default value” for a type.

impl<T> Encode for VerifySignature<T>

where T: Config + Send + Sync, T::Signature: Encode, T::AccountId: Encode,

fn size_hint(&self) -> usize

If possible give a hint of expected size of the encoding.

fn encode_to<__CodecOutputEdqy: Output + ?Sized>( &self, __codec_dest_edqy: &mut __CodecOutputEdqy, )

Convert self to a slice and append it to the destination.

fn encode(&self) -> Vec<u8>

Convert self to an owned vector.

fn using_encoded<R, F>(&self, f: F) -> R

where F: FnOnce(&[u8]) -> R,

Convert self to a slice and then invoke the given closure with it.

fn encoded_size(&self) -> usize

Calculates the encoded size.

impl<T> PartialEq for VerifySignature<T>

where T: Config + Send + Sync + PartialEq, T::Signature: PartialEq, T::AccountId: PartialEq,

fn eq(&self, other: &VerifySignature<T>) -> bool

Tests for self and other values to be equal, and is used by ==.

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

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

impl<T> TransactionExtension<<T as Config>::RuntimeCall> for VerifySignature<T>

where T: Config + Send + Sync, <T::RuntimeCall as Dispatchable>::RuntimeOrigin: AsTransactionAuthorizedOrigin,

const IDENTIFIER: &'static str = "VerifyMultiSignature"

Unique identifier of this signed extension.

type Implicit = ()

Any additional data which was known at the time of transaction construction and can be useful in authenticating the transaction. This is determined dynamically in part from the on-chain environment using the implicit function and not directly contained in the transaction itself and therefore is considered “implicit”.

type Val = ()

The type that encodes information that can be passed from validate to prepare.

type Pre = ()

The type that encodes information that can be passed from prepare to post_dispatch.

fn weight(&self, _call: &T::RuntimeCall) -> Weight

The weight consumed by executing this extension instance fully during transaction dispatch.

fn validate( &self, origin: <T::RuntimeCall as Dispatchable>::RuntimeOrigin, _call: &T::RuntimeCall, _info: &DispatchInfoOf<T::RuntimeCall>, _len: usize, _: (), inherited_implication: &impl Encode, _source: TransactionSource, ) -> Result<(ValidTransaction, Self::Val, <T::RuntimeCall as Dispatchable>::RuntimeOrigin), TransactionValidityError>

Validate a transaction for the transaction queue.

fn prepare( self, _val: Self::Val, _origin: &DispatchOriginOf<T::RuntimeCall>, _call: &T::RuntimeCall, _info: &DispatchInfoOf<T::RuntimeCall>, _len: usize, ) -> Result<Self::Pre, TransactionValidityError>

Do any pre-flight stuff for a transaction after validation.

fn implicit(&self) -> Result<Self::Implicit, TransactionValidityError>

Determine any additional data which was known at the time of transaction construction and can be useful in authenticating the transaction. The expected usage of this is to include in any data which is signed and verified as part of transaction validation. Also perform any pre-signature-verification checks and return an error if needed.

fn metadata() -> Vec<TransactionExtensionMetadata>

Returns the metadata for this extension.

fn post_dispatch_details( _pre: Self::Pre, _info: &<Call as Dispatchable>::Info, _post_info: &<Call as Dispatchable>::PostInfo, _len: usize, _result: &Result<(), DispatchError>, ) -> Result<Weight, TransactionValidityError>

Do any post-flight stuff for an extrinsic.

fn post_dispatch( pre: Self::Pre, info: &<Call as Dispatchable>::Info, post_info: &mut <Call as Dispatchable>::PostInfo, len: usize, result: &Result<(), DispatchError>, ) -> Result<(), TransactionValidityError>

A wrapper for post_dispatch_details that refunds the unspent weight consumed by this extension into the post dispatch information.

fn bare_validate( _call: &Call, _info: &<Call as Dispatchable>::Info, _len: usize, ) -> Result<ValidTransaction, TransactionValidityError>

Validation logic for bare extrinsics.

fn bare_validate_and_prepare( _call: &Call, _info: &<Call as Dispatchable>::Info, _len: usize, ) -> Result<(), TransactionValidityError>

All pre-flight logic run before dispatching bare extrinsics.

fn bare_post_dispatch( _info: &<Call as Dispatchable>::Info, _post_info: &mut <Call as Dispatchable>::PostInfo, _len: usize, _result: &Result<(), DispatchError>, ) -> Result<(), TransactionValidityError>

Post dispatch logic run after dispatching bare extrinsics.

impl<T> TypeInfo for VerifySignature<T>

where T: Config + Send + Sync + 'static, T::Signature: TypeInfo + 'static, T::AccountId: TypeInfo + 'static,

type Identity = VerifySignature<T>

The type identifying for which type info is provided.

fn type_info() -> Type

Returns the static type identifier for Self.

impl<T> DecodeWithMemTracking for VerifySignature<T>

where T: Config + Send + Sync, T::Signature: DecodeWithMemTracking, T::AccountId: DecodeWithMemTracking,

impl<T> EncodeLike for VerifySignature<T>

where T: Config + Send + Sync, T::Signature: Encode, T::AccountId: Encode,

impl<T> Eq for VerifySignature<T>

where T: Config + Send + Sync + Eq, T::Signature: Eq, T::AccountId: Eq,

impl<T> StructuralPartialEq for VerifySignature<T>

where T: Config + Send + Sync,