Remove old notes

Author: cowlicks

src/crypto/cipher.rs

@@ -136,24 +136,9 @@ impl EncryptCipher {
         Ok((Self { push_stream }, msg))
     }
 
-    // Possible API's:
-    // encrypted message is (tag + encrypted + mac )
-    // to have *zero* alocations we could
-    // * take a buffer of the expected final length, plantext starts at 1 to 1 + planetext.len()
-    // * final length is 1 + plaintext.len() + mac.len()
-    // * we write tag to 0
-    // * encrypt plain text part in place
-    // * write mac to end
-    //
-    // it would be akward to take an array like this. We could infer the plaintext via the buffer
-    // it's range would be (1..(buf.len() - mac.len()))
-    // encypt-in-place the palintext,
-    // For now... let's just return the encrypted buffer
-    //
+    // TODO make this work in-place
     /// Encrypts `msg` and returns the encrypted bytes
     pub(crate) fn encrypt(&mut self, msg: &[u8]) -> io::Result<Vec<u8>> {
-        // NB: the result is written in place to the provided, however the buffer must be able to
-        // grow, since the encrypted message is bigger. So here we convert the slice to a vec.
         let mut out = msg.to_vec();
         self.push_stream
             .push(&mut out, &[], Tag::Message)