Enum SignatureError 

pub enum SignatureError {
    EquationFalse,
    PointDecompressionError,
    ScalarFormatError,
    BytesLengthError {
        name: &'static str,
        description: &'static str,
        length: usize,
    },
    NotMarkedSchnorrkel,
    MuSigAbsent {
        musig_stage: MultiSignatureStage,
    },
    MuSigInconsistent {
        musig_stage: MultiSignatureStage,
        duplicate: bool,
    },
}

Errors which may occur while processing signatures and keypairs.

All these errors represent a failed signature when they occur in the context of verifying a sitgnature, including in deserializaing for verification. We expose the distinction among them primarily for debugging purposes.

This error may arise due to:

• Being given bytes with a length different to what was expected.

• A problem decompressing r, a curve point, in the Signature, or the curve point for a PublicKey.

• A problem with the format of s, a scalar, in the Signature. This is only raised if the high-bit of the scalar was set. (Scalars must only be constructed from 255-bit integers.)

• Multi-signature protocol errors

Variants

EquationFalse

A signature verification equation failed.

We emphasise that all variants represent a failed signature, not only this one.

PointDecompressionError

Invalid point provided, usually to verify methods.

ScalarFormatError

Invalid scalar provided, usually to Signature::from_bytes.

BytesLengthError

An error in the length of bytes handed to a constructor.

To use this, pass a string specifying the name of the type which is returning the error, and the length in bytes which its constructor expects.

Fields

name: &'static str

Identifies the type returning the error

description: &'static str

Describes the type returning the error

length: usize

Length expected by the constructor in bytes

NotMarkedSchnorrkel

Signature not marked as schnorrkel, maybe try ed25519 instead.

MuSigAbsent

There is no record of the preceeding multi-signautre protocol stage for the specified public key.

Fields

musig_stage: MultiSignatureStage

Identifies the multi-signature protocol stage during which the error occured.

MuSigInconsistent

For this public key, there are either conflicting records for the preceeding multi-signautre protocol stage or else duplicate duplicate records for the current stage.

Fields

musig_stage: MultiSignatureStage

Identifies the multi-signature protocol stage during which the error occured.

duplicate: bool

Set true if the stage was reached correctly once but this duplicate disagrees.

Trait Implementations

impl Clone for SignatureError

fn clone(&self) -> SignatureError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SignatureError

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

Formats the value using the given formatter.

impl Display for SignatureError

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

Formats the value using the given formatter.

impl Hash for SignatureError

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

where __H: Hasher,

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 PartialEq for SignatureError

fn eq(&self, other: &SignatureError) -> 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 Copy for SignatureError

impl Eq for SignatureError

impl StructuralPartialEq for SignatureError