56 lines
1.5 KiB
Rust
56 lines
1.5 KiB
Rust
// -*- mode: rust; -*-
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//
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// This file is part of reddsa.
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// Copyright (c) 2019-2021 Zcash Foundation
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// See LICENSE for licensing information.
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//
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// Authors:
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// - Henry de Valence <hdevalence@hdevalence.ca>
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// - Conrado Gouvea <conradoplg@gmail.com>
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//! RedDSA Signatures
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use core::{fmt, marker::PhantomData};
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use crate::{hex_if_possible, SigType};
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/// A RedDSA signature.
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#[derive(Copy, Clone, Eq, PartialEq)]
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#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
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pub struct Signature<T: SigType> {
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pub(crate) r_bytes: [u8; 32],
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pub(crate) s_bytes: [u8; 32],
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pub(crate) _marker: PhantomData<T>,
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}
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impl<T: SigType> fmt::Debug for Signature<T> {
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fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
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f.debug_struct("Signature")
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.field("r_bytes", &hex_if_possible(&self.r_bytes))
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.field("s_bytes", &hex_if_possible(&self.s_bytes))
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.finish()
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}
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}
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impl<T: SigType> From<[u8; 64]> for Signature<T> {
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fn from(bytes: [u8; 64]) -> Signature<T> {
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let mut r_bytes = [0; 32];
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r_bytes.copy_from_slice(&bytes[0..32]);
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let mut s_bytes = [0; 32];
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s_bytes.copy_from_slice(&bytes[32..64]);
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Signature {
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r_bytes,
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s_bytes,
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_marker: PhantomData,
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}
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}
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}
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impl<T: SigType> From<Signature<T>> for [u8; 64] {
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fn from(sig: Signature<T>) -> [u8; 64] {
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let mut bytes = [0; 64];
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bytes[0..32].copy_from_slice(&sig.r_bytes[..]);
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bytes[32..64].copy_from_slice(&sig.s_bytes[..]);
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bytes
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}
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}
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