Module slhdsa 

SLH-DSA-SHA2-128s.

SLH-DSA-SHA2-128s is a post-quantum signature scheme. Its has a security reduction to the underlying hash function (SHA-256), giving an extremely high level of cryptoanalytic security. However, it has very large signatures (7856 bytes) and signing is very slow (only a few operations per core second on high-powered cores). A given private key may only be used to sign 2⁶⁴ different messages.

use bssl_crypto::slhdsa;

// Generate a key pair.
let (public_key, private_key) = slhdsa::PrivateKey::generate();

// Sign a message.
let message = b"test message";
let signature = private_key.sign(message);

// Verify the signature.
assert!(public_key.verify(message, &signature).is_ok());

// Signing with a context value.
let context = b"context";
let signature2 = private_key.sign_with_context(message, context)
   .expect("signing will always work if the context is less than 256 bytes");

// The signature isn't value without a matching context.
assert!(public_key.verify(message, &signature2).is_err());

// ... but works with the correct context.
assert!(public_key.verify_with_context(message, &signature2, context).is_ok());

Structs

PrivateKey

An SLH-DSA-SHA2-128s private key.

PublicKey

An SLH-DSA-SHA2-128s public key.

Constants

PRIVATE_KEY_BYTES

The number of bytes in an SLH-DSA-SHA2-128s private key.

PUBLIC_KEY_BYTES

The number of bytes in an SLH-DSA-SHA2-128s public key.

SIGNATURE_BYTES

The number of bytes in an SLH-DSA-SHA2-128s signature.