Struct VerifiedTicket 

pub struct VerifiedTicket {
    ticket: Ticket,
    hash: HashBase<CoreWrapper<Keccak256Core>>,
    issuer: Address,
    channel_id: HashBase<CoreWrapper<Keccak256Core>>,
}

Holds a ticket that has been already verified. This structure guarantees that [Ticket::get_hash()] of VerifiedTicket::verified_ticket() is always equal to VerifiedTicket::verified_hash

Fields

ticket: Ticket

hash: HashBase<CoreWrapper<Keccak256Core>>

issuer: Address

channel_id: HashBase<CoreWrapper<Keccak256Core>>

Implementations

impl VerifiedTicket

pub fn win_prob(&self) -> WinningProbability

Returns the verified encoded winning probability of the ticket

pub fn is_winning( &self, response: &Response, chain_keypair: &ChainKeypair, domain_separator: &HashBase<CoreWrapper<Keccak256Core>>, ) -> bool

Checks if this ticket is considered a win. Requires access to the private key to compute the VRF values.

Computes the ticket’s luck value and compares it against the ticket’s probability. If luck <= probability, the ticket is considered a win.

Ticket luck value

This ticket’s luck value is the first 7 bytes of Keccak256 hash where the input is the concatenation of ticket’s hash, VRF’s encoded v value, PoR response and the ticket’s signature.

Winning probability

Each ticket specifies a probability, given as an integer in [0, 2^56-1] where 0 -> 0% and 2^56 - 1 -> 100% win probability. If the ticket’s luck value is greater than the stated probability, it is considered a winning ticket.

pub fn verified_ticket(&self) -> &Ticket

Ticket with already verified signature.

pub fn verified_hash(&self) -> &HashBase<CoreWrapper<Keccak256Core>>

Fixed ticket hash that is guaranteed to be equal to [Ticket::get_hash] of VerifiedTicket::verified_ticket.

pub fn verified_issuer(&self) -> &Address

Verified issuer of the ticket.

The returned address is guaranteed to be equal to the signer recovered from the VerifiedTicket::verified_ticket’s signature.

pub fn channel_id(&self) -> &HashBase<CoreWrapper<Keccak256Core>>

Channel ID of the ticket.

The ticket is guaranteed to belong to the channel with the returned ChannelId.

pub fn verified_signature(&self) -> &ChainSignature<NativeEcdsaSigningEngine>

Shorthand to retrieve reference to the verified ticket signature

pub fn leak(self) -> Ticket

Deconstructs self back into the unverified [Ticket].

pub fn into_unacknowledged(self, own_key: HalfKey) -> UnacknowledgedTicket

Creates a new unacknowledged ticket from the VerifiedTicket, given our own part of the PoR challenge.

pub fn into_acknowledged(self, response: Response) -> AcknowledgedTicket

Shorthand to acknowledge the ticket if the matching response is already known.

Trait Implementations

impl Clone for VerifiedTicket

fn clone(&self) -> VerifiedTicket

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for VerifiedTicket

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for VerifiedTicket

fn deserialize<__D>( __deserializer: __D, ) -> Result<VerifiedTicket, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for VerifiedTicket

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

Formats the value using the given formatter.

impl Ord for VerifiedTicket

fn cmp(&self, other: &VerifiedTicket) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for VerifiedTicket

fn eq(&self, other: &VerifiedTicket) -> 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 PartialOrd for VerifiedTicket

fn partial_cmp(&self, other: &VerifiedTicket) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Serialize for VerifiedTicket

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for VerifiedTicket

impl Eq for VerifiedTicket

impl StructuralPartialEq for VerifiedTicket