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41 lines
1.2 KiB
41 lines
1.2 KiB
//! RSA and chacha20 key exchange methods
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use super::*;
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/*
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use tokio::prelude::*;
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pub async fn write_cckey<W: AsyncWrite + Unpin>(mut to: W, rsa: &crypt::RsaPublicKey, key: &crypt::Key, iv: &crypt::IV) -> std::io::Result<()>
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{
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let key = {
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let mut buf = Vec::with_capacity(chacha20stream::key::KEY_SIZE);
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crypt::rsa_encrypt(rsa, &mut buf, key.as_ref())?;
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buf
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};
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to.write_all(&key[..]).await?; //TODO: Find size of `key` here.
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to.write_all(iv.as_ref()).await?;
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Ok(())
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}
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*/
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/// A future that writes an RSA encrypted chacha20 key to a stream when awaited
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//TODO: Find size of RSA ecnrypted chacha `Key`.
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#[pin_project]
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struct CCKeyWrite<'a, W: AsyncWrite>{
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/// The bytes of an **already encrypted** chacha20 key.
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enc_key: Vec<u8>,
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/// A non-encrypted chacha20 IV.
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iv: [u8; chacha20stream::key::IV_SIZE],
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/// Stream to write the data to when this future is awaited.
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#[pin] stream: &'a mut W,
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}
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//TODO: impl `Future` for CCKeyWrite should `write_all` both `enc_key` and `iv` to `stream` when `.await`ed.
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impl<'a, W: AsyncWrite> Future for CCKeyWrite<'a, S>
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{
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type Output = io::Result<()>;
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//todo: how to we `write_all` in `poll`? implement it outselves with looping `poll_write` and `futures::ready!()`?
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}
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