Struct SingleSignature

pub struct SingleSignature {
    pub sigma: BlsSignature,
    pub indexes: Vec<Index>,
    pub signer_index: Index,
}

Signature created by a single party who has won the lottery.

Fields

sigma: BlsSignature

The signature from the underlying MSP scheme.

indexes: Vec<Index>

The index(es) for which the signature is valid

signer_index: Index

Merkle tree index of the signer.

Implementations

impl SingleSignature

pub fn verify<D: Clone + Digest + FixedOutput>( &self, params: &Parameters, pk: &VerificationKey, stake: &Stake, avk: &AggregateVerificationKey<D>, msg: &[u8], ) -> Result<(), StmSignatureError>

Verify an stm signature by checking that the lottery was won, the merkle path is correct, the indexes are in the desired range and the underlying multi signature validates.

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

Convert an StmSig into bytes

Layout

• Stake
• Number of valid indexes (as u64)
• Indexes of the signature
• Public Key
• Signature
• Merkle index of the signer.

pub fn from_bytes<D: Clone + Digest + FixedOutput>( bytes: &[u8], ) -> Result<SingleSignature, StmSignatureError>

Extract a batch compatible SingleSignature from a byte slice.

pub fn cmp_stm_sig(&self, other: &Self) -> Ordering

Compare two StmSig by their signers’ merkle tree indexes.

pub fn verify_core( &self, params: &Parameters, pk: &VerificationKey, stake: &Stake, msg: &[u8], total_stake: &Stake, ) -> Result<(), StmSignatureError>

Verify a core signature by checking that the lottery was won, the indexes are in the desired range and the underlying multi signature validates.

Trait Implementations

impl Clone for SingleSignature

fn clone(&self) -> SingleSignature

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for SingleSignature

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for SingleSignature

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Hash for SingleSignature

fn hash<H: Hasher>(&self, state: &mut H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for SingleSignature

fn cmp(&self, other: &Self) -> 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 SingleSignature

fn eq(&self, other: &Self) -> 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 SingleSignature

fn partial_cmp(&self, other: &Self) -> 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 SingleSignature

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Eq for SingleSignature