Add SPDX license identifiers

protocol/src/chacha20poly1305.rs

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: MIT OR Apache-2.0
+
 // ChaCha20 is used directly by the length cipher.
 pub(crate) mod chacha20;
 mod poly1305;

protocol/src/chacha20poly1305/chacha20.rs

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: MIT OR Apache-2.0
+
 //! The ChaCha20 stream cipher based on RFC7539.
 
 /// The first four words (32-bit) of the ChaCha stream cipher state are constants.

protocol/src/chacha20poly1305/poly1305.rs

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: MIT OR Apache-2.0
+
 //! Poly1305 one-time authenticator from RFC7539.
 //!
 //! Implementation heavily inspired by [this implementation in C](https://github.com/floodyberry/poly1305-donna/blob/master/poly1305-donna-32.h)

protocol/src/fschacha20poly1305.rs

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: MIT OR Apache-2.0
+
 use core::fmt;
 
 use crate::chacha20poly1305::chacha20::ChaCha20;

protocol/src/hkdf.rs

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: MIT OR Apache-2.0
+
 //! HMAC-based Extract-and-Expand Key Derivation Function (HKDF).
 //!
 //! Implementation based on RFC5869, but the interface is scoped

protocol/src/lib.rs

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: MIT OR Apache-2.0
+
 //! BIP 324 encrypted transport for exchanging Bitcoin P2P messages. Read more about the [specification](https://github.com/bitcoin/bips/blob/master/bip-0324.mediawiki).
 #![no_std]
 

protocol/tests/round_trips.rs

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: MIT OR Apache-2.0
+
 #[test]
 #[cfg(feature = "std")]
 fn hello_world_happy_path() {

proxy/src/bin/async.rs

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: MIT OR Apache-2.0
+
 use bip324::{Handshake, Role};
 use bip324_proxy::{read_v1, read_v2, write_v1, write_v2};
 use bitcoin::Network;

proxy/src/bin/v1.rs

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: MIT OR Apache-2.0
 //! Simple V1 proxy to test hooking things up end to end.
 
 use bip324_proxy::{read_v1, write_v1};

proxy/src/lib.rs

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: MIT OR Apache-2.0
+
 //! Helper functions for bitcoin p2p proxies.
 //!
 //! The V1 and V2 p2p protocols have different header encodings, so a proxy has to do