Enum SumcheckError 

pub enum SumcheckError {
    RoundCountMismatch {
        expected: usize,
        actual: usize,
    },
    MissingSumcheckData {
        expected_rounds: usize,
    },
    InvalidPowWitness {
        round: usize,
        difficulty: usize,
    },
    MissingPowWitness {
        round: usize,
        difficulty: usize,
    },
    PowWitnessCountMismatch {
        expected: usize,
        actual: usize,
    },
    WireSizeMismatch {
        round: usize,
        expected: usize,
        actual: usize,
    },
    EvenCharacteristic,
    MaskTooShort {
        ell_zk: usize,
    },
    NoRounds,
    OpeningShapeMismatch {
        table_idx: usize,
        expected_current: usize,
        expected_next: usize,
        actual_current: usize,
        actual_next: usize,
    },
}

Errors from sumcheck protocol verification.

Variants

RoundCountMismatch

The proof contains a different number of rounds than expected.

Fields

expected: usize

Round count the configuration fixes.

actual: usize

Round count the proof carries.

MissingSumcheckData

The proof is missing sumcheck data when rounds > 0.

Fields

expected_rounds: usize

Round count the configuration fixes.

InvalidPowWitness

Proof-of-work witness verification failed.

Fields

round: usize

Round whose challenge the rejected grinding step guards.

difficulty: usize

Difficulty in bits that the step requires.

MissingPowWitness

Grinding is enabled but a round carries no witness to replay its step with.

Fields

round: usize

Round whose challenge the absent grinding step guards.

difficulty: usize

Difficulty in bits that the step requires.

PowWitnessCountMismatch

The witness count is not the one the difficulty fixes.

Zero difficulty admits no witnesses, and a positive one admits exactly one per round.

Fields

expected: usize

Witness count the configuration fixes.

actual: usize

Witness count the proof carries.

WireSizeMismatch

HVZK sumcheck: a per-round wire payload had the wrong number of field elements.

Each round carries max(ell_zk, 3) - 1 of them.

The linear coefficient is the one left off, per Lemma 6.4 and paper §6.

Fields

round: usize

Round index where the mismatch was found, counted from zero.

expected: usize

Element count the configuration fixes.

actual: usize

Element count the proof carries.

EvenCharacteristic

HVZK sumcheck: the base field has characteristic two.

Lemma 6.4 inverts the endpoint identity, which divides by two.

MaskTooShort

HVZK sumcheck: the mask code message is too short to hide a round.

A mask of degree ell_zk - 1 must cover the degree-2 plain piece.

Fields

ell_zk: usize

Mask code message length the configuration fixes.

NoRounds

HVZK sumcheck: a masked batch was configured with no rounds.

Such a batch commits no mask and reduces no claim.

OpeningShapeMismatch

An opening claim’s evaluations do not match the requested column shape.

The evaluations come from the proof, so a malformed proof must be rejected here rather than aborting the verifier.

Fields

table_idx: usize

Table whose opening claim was rejected.

expected_current: usize

Current-column count the request fixes.

expected_next: usize

Next-column count the request fixes.

actual_current: usize

Current-column count the claim carries.

actual_next: usize

Next-column count the claim carries.

Trait Implementations

impl Debug for SumcheckError

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

Formats the value using the given formatter.

impl Display for SumcheckError

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

Formats the value using the given formatter.

impl Eq for SumcheckError

impl Error for SumcheckError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl From<SumcheckError> for JaggedError

fn from(source: SumcheckError) -> Self

Converts to this type from the input type.

impl From<SumcheckError> for BitRingSwitchProofError

fn from(source: SumcheckError) -> Self

Converts to this type from the input type.

impl From<SumcheckError> for RingSwitchError

fn from(source: SumcheckError) -> Self

Converts to this type from the input type.

impl PartialEq for SumcheckError

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for SumcheckError