Struct Signature 

pub struct Signature { /* private fields */ }

A signature over a hash the participant produced.

signed_by is the fingerprint the participant assigned to the key, not anything derivable from the key material here: Canton computes it, and GenerateExternalPartyTopology is where a caller learns it. Sending a fingerprint Canton did not issue fails verification, which is why Ed25519Key cannot become a Signer until it has one.

Implementations

impl Signature

pub fn new( format: SignatureFormat, bytes: Vec<u8>, signed_by: impl Into<String>, algorithm: SigningAlgorithm, ) -> Result<Signature, Error>

A signature from its parts.

Errors

canton_core::Error::InvalidRequest if the bytes cannot be what they claim: empty — which the Ledger API marks as required non-empty — or the wrong length for an Ed25519 Concat signature. A truncated reply from a signing service is worth catching here rather than as a verification failure with nothing to point at.

pub fn format(&self) -> SignatureFormat

How bytes is laid out.

pub fn bytes(&self) -> &[u8]

The signature bytes.

pub fn signed_by(&self) -> &str

The fingerprint of the key that produced it, as Canton assigned it.

pub fn algorithm(&self) -> SigningAlgorithm

The algorithm it was produced with.

Trait Implementations

impl Clone for Signature

fn clone(&self) -> Signature

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Signature

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

Formats the value using the given formatter.

impl Eq for Signature

impl From<&Signature> for Signature

fn from(value: &Signature) -> Signature

Converts to this type from the input type.

impl PartialEq for Signature

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Signature