Struct exonum_crypto::Signature

pub struct Signature(_);

Ed25519 digital signature. This structure creates a signature over data using a secret key. Later it is possible to verify, using the corresponding public key, that the data have indeed been signed with that secret key.

Ed25519 is a signature system that ensures fast signing and key generation, as well as security and collision resilience.

Examples

The example below generates a pair of random public and secret keys, adds certain data, signs the data using the secret key and verifies that the data have been signed with that secret key.

let (public_key, secret_key) = exonum_crypto::gen_keypair();
let data = [1, 2, 3];
let signature = exonum_crypto::sign(&data, &secret_key);
assert!(exonum_crypto::verify(&signature, &data, &public_key));

Methods

impl Signature

pub fn zero() -> Self

Creates a new instance filled with zeros.

impl Signature

pub fn new(bytes_array: [u8; 64]) -> Self

Creates a new instance from bytes array.

pub fn from_slice(bytes_slice: &[u8]) -> Option<Self>

Creates a new instance from bytes slice.

pub fn to_hex(&self) -> String

Returns a hex representation of binary data. Lower case letters are used (e.g. f9b4ca).

Trait Implementations

impl PartialOrd<Signature> for Signature

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

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

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

This method tests less than (for self and other) and is used by the < operator.

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

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

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

This method tests greater than (for self and other) and is used by the > operator.

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

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

impl Copy for Signature

impl AsRef<[u8]> for Signature

fn as_ref(&self) -> &[u8]

Performs the conversion.

impl PartialEq<Signature> for Signature

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

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

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

This method tests for !=.

impl Clone for Signature

fn clone(&self) -> Signature

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Ord for Signature

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

This method returns an Ordering between self and other.

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

Compares and returns the maximum of two values.

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

Compares and returns the minimum of two values.

impl Eq for Signature

impl Display for Signature

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

Formats the value using the given formatter.

impl Debug for Signature

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

Formats the value using the given formatter.

impl Hash for Signature

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, 

Feeds a slice of this type into the given [Hasher].

impl Index<Range<usize>> for Signature

type Output = [u8]

The returned type after indexing.

fn index(&self, _index: Range<usize>) -> &[u8]

Performs the indexing (container[index]) operation.

impl Index<RangeTo<usize>> for Signature

type Output = [u8]

The returned type after indexing.

fn index(&self, _index: RangeTo<usize>) -> &[u8]

Performs the indexing (container[index]) operation.

impl Index<RangeFrom<usize>> for Signature

type Output = [u8]

The returned type after indexing.

fn index(&self, _index: RangeFrom<usize>) -> &[u8]

Performs the indexing (container[index]) operation.

impl Index<RangeFull> for Signature

type Output = [u8]

The returned type after indexing.

fn index(&self, _index: RangeFull) -> &[u8]

Performs the indexing (container[index]) operation.

impl Serialize for Signature

fn serialize<S>(&self, ser: S) -> Result<S::Ok, S::Error> where
    S: Serializer, 

Serialize this value into the given Serde serializer.

impl<'de> Deserialize<'de> for Signature

fn deserialize<D>(deserializer: D) -> Result<Self, D::Error> where
    D: Deserializer<'de>, 

Deserialize this value from the given Serde deserializer.

impl FromHex for Signature

type Error = FromHexError

fn from_hex<T: AsRef<[u8]>>(v: T) -> Result<Self, Self::Error>

Creates an instance of type Self from the given hex string, or fails with a custom error type.