Struct schnorrkel::sign::Signature

pub struct Signature { /* fields omitted */ }

A Ristretto Schnorr signature “detached” from the signed message.

These cannot be converted to any Ed25519 signature because they hash curve points in the Ristretto encoding.

Implementations

impl Signature

pub fn to_bytes(&self) -> [u8; 64]

Convert this Signature to a byte array.

pub fn from_bytes(bytes: &[u8]) -> SignatureResult<Signature>

Construct a Signature from a slice of bytes.

We distinguish schnorrkell signatures from ed25519 signatures by setting the high bit of byte 31. We return an error if this marker remains unset because otherwise schnorrkel signatures would be indistinguishable from ed25519 signatures. We cannot always distinguish between schnorrkel and ed25519 public keys either, so without this market bit we could not do batch verification in systems that support precisely ed25519 and schnorrkel.

We cannot distinguish amongst different SigningTranscript types using these markey bits, but protocol should not need two different transcript types.

pub fn from_bytes_not_distinguished_from_ed25519(
    bytes: &[u8]
) -> SignatureResult<Signature>

Depricated construction of a Signature from a slice of bytes without checking the bit distinguishing from ed25519. Deprecated.

Trait Implementations

impl Clone for Signature

fn clone(&self) -> Signature

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Copy for Signature

impl Debug for Signature

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

Formats the value using the given formatter.

impl Eq for Signature

impl PartialEq<Signature> for Signature

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=.

impl StructuralEq for Signature

impl StructuralPartialEq for Signature