Struct SignedStatement 

pub struct SignedStatement {
    pub statement: WitnessStatement,
    pub public_key: [u8; 32],
    pub signature: Vec<u8>,
}

A statement, the public key that signed it, and the signature.

The key travels with the statement because a reader checking a seed may hold nothing else, and it costs no trust: the statement names its witness by the key’s hash, so a substituted key names somebody else.

Fields

statement: WitnessStatement

What was said.

public_key: [u8; 32]

The seed’s ed25519 public key.

signature: Vec<u8>

Its signature, made the way an op’s author signs one: over the signing hash of [WITNESS_CHANNEL, canonical_bytes].

Implementations

impl SignedStatement

pub fn sign(key: &ActorKey, statement: WitnessStatement) -> Self

Signs statement with key.

pub fn verify(&self) -> Result<(), String>

Checks the statement is one this build reads, is signed by the key it carries, and that key is the witness it names.

Errors

Which of the three failed.

pub fn to_json(&self) -> Value

Its JSON form, as /api/witness serves it.

pub fn from_json(value: &Value) -> Option<Self>

Reads one back from its JSON form, unchecked: see SignedStatement::verify.

Trait Implementations

impl Clone for SignedStatement

fn clone(&self) -> SignedStatement

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SignedStatement

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

Formats the value using the given formatter.

impl PartialEq for SignedStatement

fn eq(&self, other: &SignedStatement) -> 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 Eq for SignedStatement

impl StructuralPartialEq for SignedStatement