Function sign [src]

Sign a message using the key pair. The noise can be null in order to create deterministic signatures. If deterministic signatures are not required, the noise should be randomly generated instead. This helps defend against fault attacks.

Prototype

 pub fn sign(key_pair: KeyPair, msg: []const u8, noise: ?[noise_length]u8) (IdentityElementError || NonCanonicalError || KeyMismatchError || WeakPublicKeyError)!Signature

Parameters

key_pair: KeyPairmsg: []const u8noise: ?[noise_length]u8

Source

  pub fn sign(key_pair: KeyPair, msg: []const u8, noise: ?[noise_length]u8) (IdentityElementError || NonCanonicalError || KeyMismatchError || WeakPublicKeyError)!Signature {
    if (!mem.eql(u8, &key_pair.secret_key.publicKeyBytes(), &key_pair.public_key.toBytes())) {
        return error.KeyMismatch;
    }
    const scalar_and_prefix = key_pair.secret_key.scalarAndPrefix();
    return key_pair.public_key.computeNonceAndSign(
        msg,
        noise,
        scalar_and_prefix.scalar,
        &scalar_and_prefix.prefix,
    );
}  