Struct akd::UpdateProof

pub struct UpdateProof {
    pub epoch: u64,
    pub value: AkdValue,
    pub version: u64,
    pub existence_vrf_proof: Vec<u8, Global>,
    pub existence_proof: MembershipProof,
    pub previous_version_vrf_proof: Option<Vec<u8, Global>>,
    pub previous_version_proof: Option<MembershipProof>,
    pub commitment_nonce: Vec<u8, Global>,
}

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

value: AkdValue

Value at this update

version: u64

Version at this update

existence_vrf_proof: Vec<u8, Global>

VRF proof for the label for the current version

existence_proof: MembershipProof

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

previous_version_vrf_proof: Option<Vec<u8, Global>>

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

previous_version_proof: Option<MembershipProof>

Proof that previous value was set to old at this epoch

commitment_nonce: Vec<u8, Global>

Nonce for commitment value derived from raw AkdLabel and AkdValue

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<(), Error>

Formats the value using the given formatter.

impl From<&UpdateProof> for UpdateProof

fn from(input: &UpdateProof) -> UpdateProof

Converts to this type from the input type.

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: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl TryFrom<&UpdateProof> for UpdateProof

type Error = ConversionError

The type returned in the event of a conversion error.

fn try_from(
    input: &UpdateProof
) -> Result<UpdateProof, <UpdateProof as TryFrom<&UpdateProof>>::Error>

Performs the conversion.

impl Eq for UpdateProof

impl StructuralEq for UpdateProof

impl StructuralPartialEq for UpdateProof