tendermint 0.40.4

Tendermint is a high-performance blockchain consensus engine that powers Byzantine fault tolerant applications written in any programming language. This crate provides core types for representing information about Tendermint blockchain networks, including chain information types, secret connections, and remote procedure calls (JSON-RPC).
Documentation 
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#[cfg(feature = "rust-crypto")]
use super::VerificationKey;

use crate::Error;

#[derive(Clone, Debug)]
pub struct SigningKey([u8; 32]);

impl SigningKey {
    #[allow(dead_code)]
    pub(super) fn new(bytes: [u8; 32]) -> Self {
        Self(bytes)
    }

    pub fn as_bytes(&self) -> &[u8] {
        &self.0
    }

    #[cfg(feature = "rust-crypto")]
    pub fn verification_key(&self) -> VerificationKey {
        let privkey = ed25519_consensus::SigningKey::from(self.0);
        let pubkey = privkey.verification_key();
        let pubkey_bytes = pubkey.to_bytes();
        VerificationKey::new(pubkey_bytes)
    }
}

impl TryFrom<&'_ [u8]> for SigningKey {
    type Error = Error;

    fn try_from(slice: &'_ [u8]) -> Result<Self, Self::Error> {
        if slice.len() != 32 {
            return Err(Error::invalid_key("invalid ed25519 key length".into()));
        }
        let mut bytes = [0u8; 32];
        bytes[..].copy_from_slice(slice);
        Ok(Self(bytes))
    }
}

#[cfg(feature = "rust-crypto")]
impl TryFrom<SigningKey> for ed25519_consensus::SigningKey {
    type Error = Error;

    fn try_from(src: SigningKey) -> Result<Self, Error> {
        Ok(ed25519_consensus::SigningKey::from(src.0))
    }
}

#[cfg(feature = "rust-crypto")]
impl From<ed25519_consensus::SigningKey> for SigningKey {
    fn from(sk: ed25519_consensus::SigningKey) -> Self {
        Self::new(sk.to_bytes())
    }
}