1// Copyright 2015-2016 Brian Smith.
2//
3// Permission to use, copy, modify, and/or distribute this software for any
4// purpose with or without fee is hereby granted, provided that the above
5// copyright notice and this permission notice appear in all copies.
6//
7// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
8// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
9// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
10// SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
11// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
12// OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
13// CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
14
15//! EdDSA Signatures.
16
17use super::ops::ELEM_LEN;
18use crate::digest;
19
20pub mod signing;
21pub mod verification;
22
23/// The length of an Ed25519 public key.
24pub const ED25519_PUBLIC_KEY_LEN: usize = ELEM_LEN;
25
26pub fn eddsa_digest(signature_r: &[u8], public_key: &[u8], msg: &[u8]) -> digest::Digest {
27 let mut ctx: Context = digest::Context::new(&digest::SHA512);
28 ctx.update(data:signature_r);
29 ctx.update(data:public_key);
30 ctx.update(data:msg);
31 ctx.finish()
32}
33