Enum SignatureMessage 

pub enum SignatureMessage {
    TransactionHash,
    Explicit(FixedBytes<32>),
}

The message authorized by an EIP-8141 signature entry.

RLP encodes the transaction hash case as an empty byte string and an explicit digest as its 32 bytes, preserving the EIP-8141 wire format. Decoding rejects other lengths and the reserved zero digest. JSON uses hex byte strings, including "0x" for the transaction hash case; null also deserializes as the transaction hash.

Variants

TransactionHash

The signature signs the canonical transaction signature hash.

Explicit(FixedBytes<32>)

The signature signs an explicit non-zero 32-byte digest.

Use Self::explicit to reject the reserved zero digest.

Implementations

impl SignatureMessage

pub const fn is_explicit(self) -> bool

Returns true if this is Self::Explicit.

pub fn explicit( digest: FixedBytes<32>, ) -> Result<SignatureMessage, Eip8141Error>

Creates an explicit message, rejecting the reserved zero digest.

pub const fn is_transaction_hash(self) -> bool

Returns true if the signature signs the canonical transaction signature hash.

pub const fn digest(self) -> Option<FixedBytes<32>>

Returns the explicit digest, or None for the transaction hash case.

pub const fn as_bytes(&self) -> &[u8]

Returns the byte string carried by a signature entry: empty for the transaction hash.

Trait Implementations

impl<'a> Arbitrary<'a> for SignatureMessage

Available on crate feature arbitrary only.

fn arbitrary(u: &mut Unstructured<'a>) -> Result<SignatureMessage, Error>

Generate an arbitrary value of Self from the given unstructured data.

fn arbitrary_take_rest(u: Unstructured<'a>) -> Result<Self, Error>

Generate an arbitrary value of Self from the entirety of the given unstructured data.

fn size_hint(depth: usize) -> (usize, Option<usize>)

Get a size hint for how many bytes out of an Unstructured this type needs to construct itself.

fn try_size_hint( depth: usize, ) -> Result<(usize, Option<usize>), MaxRecursionReached>

Get a size hint for how many bytes out of an Unstructured this type needs to construct itself.

impl BorshDeserialize for SignatureMessage

fn deserialize_reader<__R>(reader: &mut __R) -> Result<SignatureMessage, Error>

where __R: Read,

fn deserialize(buf: &mut &[u8]) -> Result<Self, Error>

Deserializes this instance from a given slice of bytes. Updates the buffer to point at the remaining bytes.

fn try_from_slice(v: &[u8]) -> Result<Self, Error>

Deserialize this instance from a slice of bytes.

fn try_from_reader<R>(reader: &mut R) -> Result<Self, Error>

where R: Read,

impl BorshSerialize for SignatureMessage

fn serialize<__W>(&self, writer: &mut __W) -> Result<(), Error>

where __W: Write,

impl Clone for SignatureMessage

fn clone(&self) -> SignatureMessage

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for SignatureMessage

impl Debug for SignatureMessage

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

Formats the value using the given formatter.

impl Decodable for SignatureMessage

fn decode(buf: &mut &[u8]) -> Result<SignatureMessage, Error>

Decodes the blob into the appropriate type. buf must be advanced past the decoded object.

impl Default for SignatureMessage

fn default() -> SignatureMessage

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for SignatureMessage

Available on crate feature serde only.

fn deserialize<D>( deserializer: D, ) -> Result<SignatureMessage, <D as Deserializer<'de>>::Error>

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Encodable for SignatureMessage

fn encode(&self, out: &mut dyn BufMut)

Encodes the type into the out buffer.

fn length(&self) -> usize

Returns the length of the encoding of this type in bytes.

impl EnumExt for SignatureMessage

fn deserialize_variant<__R>( reader: &mut __R, variant_tag: u8, ) -> Result<SignatureMessage, Error>

where __R: Read,

Deserialises given variant of an enum from the reader.

impl Eq for SignatureMessage

impl Hash for SignatureMessage

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

where __H: Hasher,

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 PartialEq for SignatureMessage

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for SignatureMessage

Available on crate feature serde only.

fn serialize<S>( &self, serializer: S, ) -> Result<<S as Serializer>::Ok, <S as Serializer>::Error>

where S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for SignatureMessage

impl TryFrom<&[u8]> for SignatureMessage

type Error = Eip8141Error

The type returned in the event of a conversion error.

fn try_from( value: &[u8], ) -> Result<SignatureMessage, <SignatureMessage as TryFrom<&[u8]>>::Error>

Performs the conversion.

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 33 bytes

Size for each variant:

• TransactionHash: 0 bytes
• Explicit: 32 bytes