Struct exonum::crypto::Signature

pub struct Signature(_);

Ed25519 digital signature.

Examples

use exonum::crypto;

let (public_key, secret_key) = crypto::gen_keypair();
let data = [1, 2, 3];
let signature = crypto::sign(&data, &secret_key);
assert!(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(ba: [u8; 64]) -> Self

Creates a new instance from bytes array.

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

Creates a new instance from bytes slice.

pub fn to_hex(&self) -> String

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

Trait Implementations

impl<'a> ExonumJson for &'a Signature

fn deserialize_field<B: WriteBufferWrapper>(
    value: &Value,
    buffer: &mut B,
    from: Offset,
    to: Offset
) -> Result<(), Box<Error>>

write deserialized field in buffer on place.

fn serialize_field(&self) -> Result<Value, Box<Error + Send + Sync>>

serialize field as json::Value

impl ExonumJsonDeserialize for Signature

fn deserialize(value: &Value) -> Result<Self, Box<Error>>

deserialize json value.

impl<'a> Field<'a> for &'a Signature

fn field_size() -> Offset

Field's header size

unsafe fn read(buffer: &'a [u8], from: Offset, _: Offset) -> &'a Signature

Read Field from buffer, with given position, beware of memory unsafety, you should check Field before read.

fn write(&self, buffer: &mut Vec<u8>, from: Offset, to: Offset)

Write Field to buffer, in given position write doesn't lead to memory unsafety.

fn check(
    _: &'a [u8],
    from: CheckedOffset,
    to: CheckedOffset,
    latest_segment: CheckedOffset
) -> Result

Checks if data in the buffer could be deserialized. Returns an index of latest data seen.

impl PartialEq for Signature

fn eq(&self, __arg_0: &Signature) -> bool

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

fn ne(&self, __arg_0: &Signature) -> bool

This method tests for !=.

impl Eq for Signature

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 Copy for Signature

impl PartialOrd for Signature

fn partial_cmp(&self, __arg_0: &Signature) -> Option<Ordering>

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

fn lt(&self, __arg_0: &Signature) -> bool

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

fn le(&self, __arg_0: &Signature) -> bool

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

fn gt(&self, __arg_0: &Signature) -> bool

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

fn ge(&self, __arg_0: &Signature) -> bool

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

impl Ord for Signature

fn cmp(&self, __arg_0: &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 Hash for Signature

fn hash<__H: Hasher>(&self, __arg_0: &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 AsRef<[u8]> for Signature

Important traits for &'a mut [u8]

impl<'a> Write for &'a mut [u8]impl<'a> Read for &'a [u8]

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

Performs the conversion.

impl FromStr for Signature

type Err = FromHexError

The associated error which can be returned from parsing.

fn from_str(s: &str) -> Result<Self, Self::Err>

Parses a string s to return a value of this type.

impl ToString for Signature

fn to_string(&self) -> String

Converts the given value to a String.

impl Debug 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 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 Index<Range<usize>> for Signature

type Output = [u8]

The returned type after indexing.

Important traits for &'a mut [u8]

impl<'a> Write for &'a mut [u8]impl<'a> Read for &'a [u8]

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.

Important traits for &'a mut [u8]

impl<'a> Write for &'a mut [u8]impl<'a> Read for &'a [u8]

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.

Important traits for &'a mut [u8]

impl<'a> Write for &'a mut [u8]impl<'a> Read for &'a [u8]

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.

Important traits for &'a mut [u8]

impl<'a> Write for &'a mut [u8]impl<'a> Read for &'a [u8]

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

Performs the indexing (container[index]) operation.