webtrans-quinn 0.5.0

Native WebTransport implementation built on top of QUIC using Quinn.
Documentation 
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//! Private key handling utilities.

use rustls::pki_types::{PrivateKeyDer, PrivatePkcs8KeyDer, pem::PemObject};
use std::{fs, path::Path};
use webtrans_proto::{Error, Result};

/// Load a private key from a file.
pub fn load_key(key_path: &Path) -> Result<PrivateKeyDer<'static>> {
    let key = fs::read(key_path).map_err(|e| Error::Io(e.to_string()))?;

    let key = if key_path.extension().is_some_and(|x| x == "der") {
        // Treat raw DER as PKCS#8.
        PrivateKeyDer::Pkcs8(PrivatePkcs8KeyDer::from(key))
    } else {
        // Decode a PEM-encoded key.
        PrivateKeyDer::from_pem_slice(&key).map_err(|e| Error::Tls(e.to_string()))?
    };

    Ok(key)
}