Module diem_sdk::crypto::ed25519[−][src]

Expand description

This module provides an API for the PureEdDSA signature scheme over the ed25519 twisted Edwards curve as defined in RFC8032.

Signature verification also checks and rejects non-canonical signatures.

Examples

use diem_crypto_derive::{CryptoHasher, BCSCryptoHash};
use diem_crypto::{
    ed25519::*,
    traits::{Signature, SigningKey, Uniform},
};
use rand::{rngs::StdRng, SeedableRng};
use serde::{Serialize, Deserialize};

#[derive(Serialize, Deserialize, CryptoHasher, BCSCryptoHash)]
pub struct TestCryptoDocTest(String);
let message = TestCryptoDocTest("Test message".to_string());

let mut rng: StdRng = SeedableRng::from_seed([0; 32]);
let private_key = Ed25519PrivateKey::generate(&mut rng);
let public_key: Ed25519PublicKey = (&private_key).into();
let signature = private_key.sign(&message);
assert!(signature.verify(&message, &public_key).is_ok());

Note: The above example generates a private key using a private function intended only for testing purposes. Production code should find an alternate means for secure key generation.