aead: enable missing_debug_implementations lint and add Debug impls (#1411)

Author: newpavlov

aead/src/lib.rs

@@ -6,7 +6,12 @@
     html_favicon_url = "https://raw.githubusercontent.com/RustCrypto/media/8f1a9894/logo.svg"
 )]
 #![forbid(unsafe_code)]
-#![warn(clippy::unwrap_used, missing_docs, rust_2018_idioms)]
+#![warn(
+    clippy::unwrap_used,
+    missing_docs,
+    rust_2018_idioms,
+    missing_debug_implementations
+)]
 
 #[cfg(feature = "alloc")]
 extern crate alloc;
@@ -472,6 +477,7 @@ impl<Alg: AeadInPlace> AeadMutInPlace for Alg {
 /// If you don't care about AAD, you can pass a `&[u8]` as the payload to
 /// `encrypt`/`decrypt` and it will automatically be coerced to this type.
 #[cfg(feature = "alloc")]
+#[derive(Debug)]
 pub struct Payload<'msg, 'aad> {
     /// Message to be encrypted/decrypted
     pub msg: &'msg [u8],

aead/src/stream.rs

@@ -199,6 +199,7 @@ macro_rules! impl_stream_object {
         #[doc = "[Online Authenticated-Encryption and its Nonce-Reuse Misuse-Resistance][1]."]
         #[doc = ""]
         #[doc = "[1]: https://eprint.iacr.org/2015/189.pdf"]
+        #[derive(Debug)]
         pub struct $name<A, S>
         where
             A: AeadInPlace,
@@ -361,6 +362,7 @@ impl_stream_object!(
 /// the last 5-bytes of the AEAD nonce.
 ///
 /// [1]: https://eprint.iacr.org/2015/189.pdf
+#[derive(Debug)]
 pub struct StreamBE32<A>
 where
     A: AeadInPlace,
@@ -450,6 +452,7 @@ where
 /// when interpreted as a 32-bit integer.
 ///
 /// The 31-bit + 1-bit value is stored as the last 4 bytes of the AEAD nonce.
+#[derive(Debug)]
 pub struct StreamLE31<A>
 where
     A: AeadInPlace,