Struct exonum::crypto::SignStream

pub struct SignStream(_);

This structure provides a possibility to create and/or verify Ed25519 digital signatures for a stream of data.

Example

use exonum::crypto::{SignStream, gen_keypair};

let data: Vec<[u8; 5]> = vec![[1, 2, 3, 4, 5], [6, 7, 8, 9, 10]];
let (pk, sk) = gen_keypair();
let mut create_stream = SignStream::new();
let mut verify_stream = SignStream::new();
for chunk in data {
    create_stream = create_stream.update(&chunk);
    verify_stream = verify_stream.update(&chunk);
}
let file_sign = create_stream.sign(&sk);
assert!(verify_stream.verify(&file_sign, &pk));

Methods

impl SignStream

pub fn new() -> Self

Creates a new instance of SignStream.

pub fn update(self, chunk: &[u8]) -> Self

Adds a new chunk to the message that will eventually be signed and/or verified.

pub fn sign(&mut self, secret_key: &SecretKey) -> Signature

Computes and returns a signature for the previously supplied message using the given secret_key.

pub fn verify(&mut self, sig: &Signature, public_key: &PublicKey) -> bool

Verifies that sig is a valid signature for the previously supplied message using the given public_key.

Trait Implementations

impl Debug for SignStream

fn fmt(&self, __arg_0: &mut Formatter) -> Result

Formats the value using the given formatter.

impl Default for SignStream

fn default() -> SignStream

Returns the "default value" for a type.