Struct PossessionChallenge 

pub struct PossessionChallenge {
    pub issuer_pubkey: [u8; 32],
    pub subject_pubkey: [u8; 32],
    pub nonce: [u8; 32],
}

A proof-of-possession challenge (§9.2). A certifier issues it for a subject pubkey; the holder of that subject’s private key must sign signing_bytes to prove possession before the certifier will vouch for the pubkey. Binding both pubkeys + a fresh nonce stops a proof minted for one (issuer, subject) pair — or one session — from being replayed into another.

Fields

issuer_pubkey: [u8; 32]

The agent that issued this challenge and will sign the resulting cert.

subject_pubkey: [u8; 32]

The externally-held pubkey whose possession must be proven.

nonce: [u8; 32]

Fresh random nonce — makes each challenge single-use.

Implementations

impl PossessionChallenge

pub fn signing_bytes(&self) -> Vec<u8>

The canonical, domain-separated bytes the subject signs to answer the challenge. Returned for any holder (in-memory key, phone keystore, HSM) to sign with whatever mechanism it has; the result is the PoP proof.

Trait Implementations

impl Clone for PossessionChallenge

fn clone(&self) -> PossessionChallenge

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PossessionChallenge

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for PossessionChallenge

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for PossessionChallenge

impl PartialEq for PossessionChallenge

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for PossessionChallenge

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for PossessionChallenge