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,
    },
}
Expand description

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§

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EquationFalse

A signature verification equation failed.

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

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PointDecompressionError

Invalid point provided, usually to verify methods.

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ScalarFormatError

Invalid scalar provided, usually to Signature::from_bytes.

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BytesLengthError

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

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.

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NotMarkedSchnorrkel

Signature not marked as schnorrkel, maybe try ed25519 instead.

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MuSigAbsent

Fields

§musig_stage: MultiSignatureStage

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

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

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MuSigInconsistent

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.

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.

Trait Implementations§

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impl Clone for SignatureError

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fn clone(&self) -> SignatureError

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for SignatureError

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

Formats the value using the given formatter. Read more
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impl Display for SignatureError

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

Formats the value using the given formatter. Read more
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impl Hash for SignatureError

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

Feeds this value into the given Hasher. Read more
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fn hash_slice<H>(data: &[Self], state: &mut H)where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl PartialEq<SignatureError> for SignatureError

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

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

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impl Eq for SignatureError

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impl StructuralEq for SignatureError

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impl StructuralPartialEq for SignatureError

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