dusk-plonk 0.2.3

A pure-Rust implementation of the PLONK ZK-Proof algorithm
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//! Errors related to KZG10

use failure::Error;

/// Represents an error in the PublicParameters creation and or modification.
#[derive(Fail, Debug)]
pub enum KZG10Errors {
    /// This error occurs when the user tries to create PublicParameters
    /// and supplies the max degree as zero.
    #[fail(display = "cannot create PublicParameters with max degree as 0")]
    DegreeIsZero,
    /// This error occurs when the user tries to trim PublicParameters
    /// to a degree that is larger than the maximum degree.
    #[fail(display = "cannot trim more than the maximum degree")]
    TruncatedDegreeTooLarge,
    /// This error occurs when the user tries to trim PublicParameters
    /// down to a degree that is zero.
    #[fail(display = "cannot trim PublicParameters to a maximum size of zero")]
    TruncatedDegreeIsZero,
    /// This error occurs when the user tries to commit to a polynomial whose degree is larger than
    /// the supported degree for that proving key.
    #[fail(display = "proving key is not large enough to commit to said polynomial")]
    PolynomialDegreeTooLarge,
    /// This error occurs when the user tries to commit to a polynomial whose degree is zero.
    #[fail(display = "cannot commit to polynomial of zero degree")]
    PolynomialDegreeIsZero,
    /// This error occurs when the pairing check fails at being equal to the Identity point.
    #[fail(display = "pairing check failed")]
    PairingCheckFailure,
}

#[derive(Debug, Fail)]
#[fail(display = "polynomial commitment scheme module error")]
/// Represents an error triggered on any of the Polynomial Commitment Scheme
/// functions.
pub struct PolyCommitSchemeError(#[fail(cause)] pub(crate) Error);