Enum Poseidon2RoundNumbersError 

pub enum Poseidon2RoundNumbersError {
    InvalidSboxExponent {
        exponent: u64,
        field_order_minus_one: u64,
    },
    UnsupportedWidthAndExponent {
        field_bits: u32,
        width: usize,
        exponent: u64,
    },
    UnsupportedFieldSize {
        field_bits: u32,
    },
}

Reasons the precomputed 128-bit Poseidon2 round table cannot serve a parameter set.

Variants

InvalidSboxExponent

The S-box exponent does not define a permutation of the field.

Fields

exponent: u64

Requested S-box exponent.

field_order_minus_one: u64

Multiplicative-group order the exponent must be coprime to.

UnsupportedWidthAndExponent

No precomputed round count exists for this width and exponent.

Fields

field_bits: u32

Bit length of the field order.

width: usize

Requested permutation width.

exponent: u64

Requested S-box exponent.

UnsupportedFieldSize

The table has not been computed for this field size.

Fields

field_bits: u32

Bit length of the field order.

Trait Implementations

impl Clone for Poseidon2RoundNumbersError

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Poseidon2RoundNumbersError

impl Debug for Poseidon2RoundNumbersError

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

Formats the value using the given formatter.

impl Display for Poseidon2RoundNumbersError

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

Formats the value using the given formatter.

impl Eq for Poseidon2RoundNumbersError

impl Error for Poseidon2RoundNumbersError

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 PartialEq for Poseidon2RoundNumbersError

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Poseidon2RoundNumbersError