Struct SignatureHeader 

pub struct SignatureHeader(/* private fields */);

The header byte used to encode the signature metadata.

Trait Implementations

impl Clone for SignatureHeader

fn clone(&self) -> SignatureHeader

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SignatureHeader

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

Formats the value using the given formatter.

impl Default for SignatureHeader

fn default() -> SignatureHeader

According to section 3.11.3 in the specification 1, the signature header has the format 0cc1nnnn where:

1. cc signifies the encoding method. 01 denotes using the compression encoding method and 10 denotes encoding using the uncompressed method.
2. nnnn encodes LOG_N.

For Poseidon2 Falcon 512 we use compression encoding and N = 512. Moreover, to differentiate the Poseidon2 Falcon variant from the reference variant using SHAKE256, we flip the first bit in the header. Thus, for Poseidon2 Falcon 512 the header is 10111001

impl Deserializable for SignatureHeader

fn read_from<R>(source: &mut R) -> Result<SignatureHeader, DeserializationError>

where R: ByteReader,

Reads a sequence of bytes from the provided source, attempts to deserialize these bytes into Self, and returns the result.

fn min_serialized_size() -> usize

Returns the minimum serialized size for one instance of this type.

fn read_from_bytes(bytes: &[u8]) -> Result<Self, DeserializationError>

Attempts to deserialize the provided bytes into Self and returns the result.

fn read_from_bytes_with_budget( bytes: &[u8], budget: usize, ) -> Result<Self, DeserializationError>

Deserializes Self from bytes with a byte budget limit.

impl PartialEq for SignatureHeader

fn eq(&self, other: &SignatureHeader) -> 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 Serializable for &SignatureHeader

fn write_into<W>(&self, target: &mut W)

where W: ByteWriter,

Serializes self into bytes and writes these bytes into the target.

fn to_bytes(&self) -> Vec<u8>

Serializes self into a vector of bytes.

fn get_size_hint(&self) -> usize

Returns an estimate of how many bytes are needed to represent self.

impl Eq for SignatureHeader

impl StructuralPartialEq for SignatureHeader