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
17 use super::ops::ELEM_LEN;
18 use crate::digest;
19
20 pub mod signing;
21 pub mod verification;
22
23 /// The length of an Ed25519 public key.
24 pub const ED25519_PUBLIC_KEY_LEN: usize = ELEM_LEN;
25
eddsa_digest(signature_r: &[u8], public_key: &[u8], msg: &[u8]) -> digest::Digest26 pub fn eddsa_digest(signature_r: &[u8], public_key: &[u8], msg: &[u8]) -> digest::Digest {
27 let mut ctx = digest::Context::new(&digest::SHA512);
28 ctx.update(signature_r);
29 ctx.update(public_key);
30 ctx.update(msg);
31 ctx.finish()
32 }
33