Enum PreimageKeyType

#[repr(u8)]
pub enum PreimageKeyType {
    Local = 1,
    Keccak256 = 2,
    GlobalGeneric = 3,
    Sha256 = 4,
    Blob = 5,
    Precompile = 6,
}

https://specs.optimism.io/experimental/fault-proof/index.html#pre-image-key-types

Variants

Local = 1

Local key types are local to a given instance of a fault-proof and context dependent. Commonly these local keys are mapped to bootstrap data for the fault proof program.

Keccak256 = 2

Keccak256 key types are global and context independent. Preimages are mapped from the low-order 31 bytes of the preimage’s keccak256 digest to the preimage itself.

GlobalGeneric = 3

GlobalGeneric key types are reserved for future use.

Sha256 = 4

Sha256 key types are global and context independent. Preimages are mapped from the low-order 31 bytes of the preimage’s sha256 digest to the preimage itself.

Blob = 5

Blob key types are global and context independent. Blob keys are constructed as keccak256(commitment ++ z), and then the high-order byte of the digest is set to the type byte.

Precompile = 6

Precompile key types are global and context independent. Precompile keys are constructed as keccak256(precompile_addr ++ input), and then the high-order byte of the digest is set to the type byte.

Trait Implementations

impl Clone for PreimageKeyType

fn clone(&self) -> PreimageKeyType

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PreimageKeyType

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

Formats the value using the given formatter.

impl Default for PreimageKeyType

fn default() -> PreimageKeyType

Returns the “default value” for a type.

impl Hash for PreimageKeyType

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

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for PreimageKeyType

fn cmp(&self, other: &PreimageKeyType) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for PreimageKeyType

fn eq(&self, other: &PreimageKeyType) -> 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 PartialOrd for PreimageKeyType

fn partial_cmp(&self, other: &PreimageKeyType) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl TryFrom<u8> for PreimageKeyType

type Error = PreimageOracleError

The type returned in the event of a conversion error.

fn try_from(value: u8) -> Result<Self, Self::Error>

Performs the conversion.

impl Copy for PreimageKeyType

impl Eq for PreimageKeyType

impl StructuralPartialEq for PreimageKeyType