Enum GridError 

pub enum GridError {
    InvalidDimensions {
        width: usize,
        height: usize,
    },
    InvalidByteLength {
        expected_mod: usize,
        actual_len: usize,
    },
    InvalidKeyLength {
        expected_len: usize,
        actual_len: usize,
    },
}

Represents structured errors that can occur during Grid operations.

This enum replaces generic string errors to provide zero-allocation error handling and programmatic access to failure details. It is primarily used during Grid initialization and serialization.

Variants

InvalidDimensions

Indicates that the requested Grid dimensions are invalid for cryptographic operations.

This error occurs when creating a new Grid if the dimensions do not allow for sufficient diffusion (e.g., width is 1, or total area is too small).

Fields

• width: The width (columns) of the attempted Grid.
• height: The height (rows) of the attempted Grid.

Fields

width: usize

height: usize

InvalidByteLength

Indicates that the input byte sequence length does not align with Grid requirements.

This error occurs during deserialization (e.g., from_bytes) when the provided data length is not a multiple of the Grid’s total byte size ($W \times H \times 8$ bytes).

Fields

• expected_mod: The required modulus (block size in bytes).
• actual_len: The actual length of the provided byte vector.

Fields

expected_mod: usize

actual_len: usize

InvalidKeyLength

Indicates that the provided raw key has an incorrect length.

The WHY2 key scheduling algorithm requires the input key vector to be exactly twice the size of the Grid area ($2 \times W \times H$). This allows for the initial folding and mixing of key parts (low and high components).

Fields

• expected_len: The required key length (number of i64 elements).
• actual_len: The length of the provided key vector.

Fields

expected_len: usize

actual_len: usize

Trait Implementations

impl Clone for GridError

fn clone(&self) -> GridError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for GridError

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

Formats the value using the given formatter.

impl Display for GridError

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

Formats the value using the given formatter.

impl Error for GridError

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 GridError

fn eq(&self, other: &GridError) -> 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 StructuralPartialEq for GridError