fix README, add license tags, fix CI action

Signed-off-by: Dave Huseby <dwh@linuxprogrammer.org>

.github/workflows/rust.yml

@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Build
       run: cargo build --verbose
     - name: Run tests

README.md

@@ -1,11 +1,12 @@
-# Multikey
+[![](https://img.shields.io/badge/made%20by-Cryptid%20Technologies-gold.svg?style=flat-square)][CRYPTID]
+[![](https://img.shields.io/badge/project-provenance-purple.svg?style=flat-square)][PROVENANCE]
+[![](https://img.shields.io/badge/project-multiformats-blue.svg?style=flat-square)][MULTIFORMATS]
+![](https://github.com/cryptidtech/multikey/actions/workflows/rust.yml/badge.svg)
 
-[![](https://img.shields.io/badge/made%20by-Cryptid%20Technologies-gold.svg?style=flat-square)][0]
-[![](https://img.shields.io/badge/project-provenance-purple.svg?style=flat-square)][1]
-[![](https://img.shields.io/badge/project-multiformats-blue.svg?style=flat-square)][2]
+# Multikey
 
-A Rust implementation of the [multiformats][2] [multikey specification][3] and
-[nonce specification][4].
+A Rust implementation of the [multiformats][MULTIFORMATS] [multikey specification][MULTIKEY] and
+[nonce specification][NONCE].
 
 ## Current Status
 
@@ -21,10 +22,10 @@ When using BLS12-381 keys, this implementations supports threshold key
 splitting and combining as well as threshold signing and verifying.
 
 This crate also supports converting to/from SSH format keys using the
-[`ssh-key`][5] crate. This gives full OpenSSH compatibility for reading in
+[`ssh-key`][SSHKEY] crate. This gives full OpenSSH compatibility for reading in
 OpenSSH serialized keys and converting them to Multikey format. This even
 includes non-standard SSH key protocols such as secp256k1 and BLS12-381 G1/G2
-keys through the use of [RFC 4251][6] standard for "additional algorithms"
+keys through the use of [RFC 4251][RFC4251] standard for "additional algorithms"
 names using the "@multikey" domain suffix. For instance, using this crate, an
 secp256k1 Multikey converted to an SSH format key has the algorithm name
 "secp256k1@multikey". A BLS12-381 G1 key share converted to SSH format has the
@@ -70,17 +71,17 @@ hashing codec, a KDF view (`multikey::KdfView`) for generating cipher keys for
 use by a cipher view to encrypt/decrypt the Multikey, a threshold view
 (`multikey::ThresholdView`) for key splitting and combining keys, and lastly a
 sign view (`multikey::SignView`) and verify view (`multikey::VerifyView`) for
-creating and verifying [`Multisig`][7] digital signatures.
+creating and verifying [`Multisig`][MULTISIG] digital signatures.
 
 It is important to note that the operations that seem to mutate the Multikey 
 (e.g. encrypt, decrypt, convert, etc) in fact do a copy-on-write (CoW)
 operation and return a new Multikey with the mutation applied.
 
-[0]: https://cryptid.tech
-[1]: https://github.com/cryptidtech/provenance-specifications/
-[2]: https://github.com/multiformats/multiformats
-[3]: https://github.com/cryptidtech/provenance-specifications/blob/main/specifications/multikey.md
-[4]: https://github.com/cryptidtech/provenance-specifications/blob/main/specifications/nonce.md
-[5]: https://crates.io/crates/ssh-key
-[6]: https://www.rfc-editor.org/rfc/rfc4251.html#page-11
-[7]: https://github.com/cryptidtech/multisig
+[CRYPTID]: https://cryptid.tech
+[PROVENANCE]: https://github.com/cryptidtech/provenance-specifications/
+[MULTIFORMATS]: https://github.com/multiformats/multiformats
+[MULTIKEY]: https://github.com/cryptidtech/provenance-specifications/blob/main/specifications/multikey.md
+[NONCE]: https://github.com/cryptidtech/provenance-specifications/blob/main/specifications/nonce.md
+[SSHKEY]: https://crates.io/crates/ssh-key
+[RFC4251]: https://www.rfc-editor.org/rfc/rfc4251.html#page-11
+[MULTISIG]: https://github.com/cryptidtech/multisig

src/attrid.rs

@@ -1,3 +1,4 @@
+// SPDX-License-Idnetifier: Apache-2.0
 use crate::{error::AttributesError, Error};
 use multitrait::{EncodeInto, TryDecodeFrom};
 use std::fmt;

src/cipher.rs

@@ -1,3 +1,4 @@
+// SPDX-License-Idnetifier: Apache-2.0
 use crate::{mk::Attributes, AttrId, Error, Multikey};
 use multicodec::Codec;
 use rand::{CryptoRng, RngCore};

src/error.rs

@@ -1,3 +1,4 @@
+// SPDX-License-Idnetifier: Apache-2.0
 /// Errors created by this library
 #[derive(Clone, Debug, thiserror::Error)]
 #[non_exhaustive]

src/kdf.rs

@@ -1,3 +1,4 @@
+// SPDX-License-Idnetifier: Apache-2.0
 use crate::{mk::Attributes, AttrId, Error, Multikey};
 use multicodec::Codec;
 use multiutil::Varuint;

src/lib.rs

@@ -1,3 +1,4 @@
+// SPDX-License-Idnetifier: Apache-2.0
 //!
 #![warn(missing_docs)]
 #![deny(

src/mk.rs

@@ -1,3 +1,4 @@
+// SPDX-License-Idnetifier: Apache-2.0
 use crate::{
     error::{AttributesError, CipherError, ConversionsError, KdfError},
     views::{bcrypt, bls12381, chacha20, ed25519, secp256k1},
@@ -1156,15 +1157,15 @@ mod tests {
         let pk = EncodedMultikey::new(Base::Base16Lower, conv.to_public_key().unwrap());
         println!("ed25519 pubkey: {}", pk.to_string());
 
-        let msg = b"for great justice, move every zig!".to_vec();
+        let msg = "for great justice, move every zig!";
 
         let signmk = mk.sign_view().unwrap();
-        let signature = signmk.sign(msg.as_slice(), false, None).unwrap();
+        let signature = signmk.sign(msg.as_bytes(), false, None).unwrap();
         let sig = EncodedMultisig::new(Base::Base16Lower, signature.clone());
         println!("signaure: {}", sig.to_string());
 
         let verifymk = mk.verify_view().unwrap();
-        assert!(verifymk.verify(&signature, Some(&msg)).is_ok());
+        assert!(verifymk.verify(&signature, Some(msg.as_bytes())).is_ok());
     }
 
     #[test]

src/nonce.rs

@@ -1,3 +1,4 @@
+// SPDX-License-Idnetifier: Apache-2.0
 use crate::{error::NonceError, Error};
 use core::fmt;
 use multibase::Base;

src/serde/de.rs

@@ -1,3 +1,4 @@
+// SPDX-License-Idnetifier: Apache-2.0
 use crate::{
     mk::{self, Attributes},
     nonce, AttrId, Multikey, Nonce,

src/serde/mod.rs

@@ -1,3 +1,4 @@
+// SPDX-License-Idnetifier: Apache-2.0
 //! Serde (de)serialization for [`crate::Multikey`].
 mod de;
 mod ser;

src/serde/ser.rs

@@ -1,3 +1,4 @@
+// SPDX-License-Idnetifier: Apache-2.0
 use crate::{mk, nonce, AttrId, Multikey, Nonce};
 use multiutil::{EncodedVarbytes, EncodingInfo, Varbytes};
 use serde::ser::{self, SerializeStruct};

src/views.rs

@@ -1,3 +1,4 @@
+// SPDX-License-Idnetifier: Apache-2.0
 use crate::{Error, Multikey};
 use multicodec::Codec;
 use multihash::Multihash;

src/views/bcrypt.rs

@@ -1,3 +1,4 @@
+// SPDX-License-Idnetifier: Apache-2.0
 use crate::{error::KdfError, AttrId, Error, KdfAttrView, KdfView, Multikey, Views};
 use multicodec::Codec;
 use multiutil::Varuint;

src/views/bls12381.rs

@@ -1,3 +1,4 @@
+// SPDX-License-Idnetifier: Apache-2.0
 use crate::{
     error::{
         AttributesError, CipherError, ConversionsError, KdfError, SignError, ThresholdError,

src/views/chacha20.rs

@@ -1,3 +1,4 @@
+// SPDX-License-Idnetifier: Apache-2.0
 use crate::{
     error::{AttributesError, CipherError, KdfError},
     AttrId, AttrView, CipherAttrView, CipherView, DataView, Error, FingerprintView, KdfAttrView,

src/views/ed25519.rs

@@ -1,3 +1,4 @@
+// SPDX-License-Idnetifier: Apache-2.0
 use crate::{
     error::{AttributesError, CipherError, ConversionsError, KdfError, SignError, VerifyError},
     AttrId, AttrView, Builder, CipherAttrView, ConvView, DataView, Error, FingerprintView,

src/views/secp256k1.rs

@@ -1,3 +1,4 @@
+// SPDX-License-Idnetifier: Apache-2.0
 use crate::{
     error::{AttributesError, CipherError, ConversionsError, KdfError, SignError, VerifyError},
     AttrId, AttrView, Builder, CipherAttrView, ConvView, DataView, Error, FingerprintView,