Struct akd_client::UpdateProof

pub struct UpdateProof {
    pub epoch: u64,
    pub plaintext_value: AkdValue,
    pub version: u64,
    pub existence_vrf_proof: Vec<u8>,
    pub existence_at_ep: MembershipProof,
    pub previous_val_vrf_proof: Option<Vec<u8>>,
    pub previous_val_stale_at_ep: Option<MembershipProof>,
    pub non_existence_before_ep: Option<NonMembershipProof>,
    pub next_few_vrf_proofs: Vec<Vec<u8>>,
    pub non_existence_of_next_few: Vec<NonMembershipProof>,
    pub future_marker_vrf_proofs: Vec<Vec<u8>>,
    pub non_existence_of_future_markers: Vec<NonMembershipProof>,
}

A vector of UpdateProofs are sent as the proof to a history query for a particular key. For each version of the value associated with the key, the verifier must check that:

• the version was included in the claimed epoch,
• the previous version was retired at this epoch,
• the version did not exist prior to this epoch,
• the next few versions (up until the next marker), did not exist at this epoch,
• the future marker versions did not exist at this epoch.

Fields

epoch: u64

Epoch of this update

plaintext_value: AkdValue

Value at this update

version: u64

Version at this update

existence_vrf_proof: Vec<u8>

VRF proof for the label for the current version

existence_at_ep: MembershipProof

Membership proof to show that the key was included in this epoch

previous_val_vrf_proof: Option<Vec<u8>>

VRF proof for the label for the previous version which became stale

previous_val_stale_at_ep: Option<MembershipProof>

Proof that previous value was set to old at this epoch

non_existence_before_ep: Option<NonMembershipProof>

Proof that this value didn’t exist prior to this ep

next_few_vrf_proofs: Vec<Vec<u8>>

VRF Proofs for the labels of the next few values

non_existence_of_next_few: Vec<NonMembershipProof>

Proof that the next few values did not exist at this time

future_marker_vrf_proofs: Vec<Vec<u8>>

VRF proofs for the labels of future marker entries

non_existence_of_future_markers: Vec<NonMembershipProof>

Proof that future markers did not exist

Trait Implementations

impl Clone for UpdateProof

fn clone(&self) -> UpdateProof

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for UpdateProof

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

Formats the value using the given formatter.

impl PartialEq<UpdateProof> for UpdateProof

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

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

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

This method tests for !=.

impl Eq for UpdateProof

impl StructuralEq for UpdateProof

impl StructuralPartialEq for UpdateProof