Struct ResponseItem 

pub struct ResponseItem {
    pub identifier: String,
    pub issuer_schema_id: u64,
    pub proof: ZeroKnowledgeProof,
    pub nullifier: Option<FieldElement>,
    pub session_nullifier: Option<SessionNullifier>,
    pub expires_at_min: u64,
}

Per-credential response item returned by the Authenticator.

Each entry corresponds to one requested credential with its proof material. If any credential cannot be satisfied, the entire proof response will have an error at the ProofResponse level with an empty responses array.

Nullifier Types

• Uniqueness proofs: Use nullifier field (a single FieldElement). The contract’s verify() function takes this as a separate uint256 nullifier param.

• Session proofs: Use session_nullifier field (contains both nullifier and action). The contract’s verifySession() function expects uint256[2] sessionNullifier.

Exactly one of nullifier or session_nullifier should be present.

Fields

identifier: String

An RP-defined identifier for this request item used to match against constraints and responses.

Example: orb, document.

issuer_schema_id: u64

Unique identifier for the credential schema and issuer pair.

proof: ZeroKnowledgeProof

Encoded World ID Proof. See ZeroKnowledgeProof for more details.

nullifier: Option<FieldElement>

Nullifier for Uniqueness proofs.

A unique, one-time identifier derived from (user, rpId, action) that lets RPs detect duplicate actions without learning who the user is. Used with the contract’s verify() function.

Present for Uniqueness proofs, absent for Session proofs.

session_nullifier: Option<SessionNullifier>

Session nullifier for Session proofs.

Contains both the nullifier and action values that are cryptographically bound together. Used with the contract’s verifySession() function which expects uint256[2] sessionNullifier.

Present for Session proofs, absent for Uniqueness proofs.

expires_at_min: u64

The minimum expiration required for the Credential used in the proof.

This precise value must be used when verifying the proof on-chain.

Implementations

impl ResponseItem

pub const fn new_uniqueness( identifier: String, issuer_schema_id: u64, proof: ZeroKnowledgeProof, nullifier: FieldElement, expires_at_min: u64, ) -> Self

Create a new response item for a Uniqueness proof.

pub const fn new_session( identifier: String, issuer_schema_id: u64, proof: ZeroKnowledgeProof, session_nullifier: SessionNullifier, expires_at_min: u64, ) -> Self

Create a new response item for a Session proof.

pub const fn is_session(&self) -> bool

Returns true if this is a Session proof response.

pub const fn is_uniqueness(&self) -> bool

Returns true if this is a Uniqueness proof response.

Trait Implementations

impl Clone for ResponseItem

fn clone(&self) -> ResponseItem

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ResponseItem

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for ResponseItem

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for ResponseItem

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

where __S: Serializer,

Serialize this value into the given Serde serializer.