Struct Signature

pub struct Signature(/* private fields */);

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));

Implementations

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 as_bytes(&self) -> [u8; 64]

Copies bytes from this instance.

pub fn to_hex(&self) -> String

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

Trait Implementations

impl AsRef<[u8]> for Signature

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

Converts this type into a shared reference of the (usually inferred) input type.

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 Debug for Signature

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

Formats the value using the given formatter.

impl Default for Signature

fn default() -> Self

Returns the “default value” for a type.

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 Display for Signature

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

Formats the value using the given formatter.

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.

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, Self: Sized,

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<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 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 Ord for Signature

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

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

type ProtoStruct = Signature

Type generated from the Protobuf definition.

fn to_pb(&self) -> Signature

Performs conversion to the type generated from Protobuf.

fn from_pb(pb: Signature) -> Result<Self, Error>

Performs conversion from the type generated from Protobuf.

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 Copy for Signature

impl Eq for Signature

impl StructuralPartialEq for Signature