Debug bytes as base64

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "jsonwebkey"
-version = "0.3.0"
+version = "0.3.1"
 authors = ["Nick Hynes <nhynes@nhynes.com>"]
 description = "JSON Web Key (JWK) (de)serialization, generation, and conversion."
 readme = "README.md"
@@ -11,7 +11,6 @@ edition = "2018"
 [dependencies]
 base64        = "0.12"
 bitflags      = "1.2"
-derive_more   = "0.99"
 generic-array = "0.14"
 jsonwebtoken  = { version = "7.2", optional = true }
 num-bigint    = { version = "0.2", optional = true }

src/byte_array.rs

@@ -1,15 +1,23 @@
-use derive_more::{AsRef, Deref};
 use generic_array::{ArrayLength, GenericArray};
-use serde::de::{self, Deserialize, Deserializer};
+use serde::{
+    de::{self, Deserializer},
+    Deserialize, Serialize,
+};
 use zeroize::{Zeroize, Zeroizing};
 
 /// A zeroizing-on-drop container for a `[u8; N]` that deserializes from base64.
-#[derive(Clone, Debug, PartialEq, Eq, Serialize, Deref, AsRef)]
+#[derive(Clone, PartialEq, Eq, Serialize)]
 #[serde(transparent)]
 pub struct ByteArray<N: ArrayLength<u8>>(
-    #[serde(serialize_with = "crate::utils::serde_base64::serialize")] pub GenericArray<u8, N>,
+    #[serde(serialize_with = "crate::utils::serde_base64::serialize")] GenericArray<u8, N>,
 );
 
+impl<N: ArrayLength<u8>> std::fmt::Debug for ByteArray<N> {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        f.write_str(&crate::utils::base64_encode(&self.0))
+    }
+}
+
 impl<N: ArrayLength<u8>, T: Into<GenericArray<u8, N>>> From<T> for ByteArray<N> {
     fn from(arr: T) -> Self {
         Self(arr.into())
@@ -22,6 +30,19 @@ impl<N: ArrayLength<u8>> Drop for ByteArray<N> {
     }
 }
 
+impl<N: ArrayLength<u8>> AsRef<[u8]> for ByteArray<N> {
+    fn as_ref(&self) -> &[u8] {
+        &self.0
+    }
+}
+
+impl<N: ArrayLength<u8>> std::ops::Deref for ByteArray<N> {
+    type Target = [u8];
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+
 impl<N: ArrayLength<u8>> ByteArray<N> {
     /// An unwrapping version of `try_from_slice`.
     pub fn from_slice(bytes: impl AsRef<[u8]>) -> Self {
@@ -73,7 +94,7 @@ mod tests {
         let b64 = serde_json::to_string(&arr).unwrap();
         assert_eq!(b64, BASE64_JSON);
         let bytes: ByteArray<U7> = serde_json::from_str(&b64).unwrap();
-        assert_eq!(bytes.as_slice(), BYTES);
+        assert_eq!(bytes.as_ref(), BYTES);
     }
 
     #[test]

src/byte_vec.rs

@@ -1,21 +1,34 @@
-use std::fmt;
-
-use derive_more::{AsRef, Deref, From};
+use serde::{Deserialize, Serialize};
 use zeroize::Zeroize;
 
 /// A zeroizing-on-drop container for a `Vec<u8>` that deserializes from base64.
-#[derive(Clone, PartialEq, Eq, Zeroize, Serialize, Deserialize, Deref, AsRef, From)]
+#[derive(Clone, PartialEq, Eq, Zeroize, Serialize, Deserialize)]
 #[zeroize(drop)]
 #[serde(transparent)]
-pub struct ByteVec(#[serde(with = "crate::utils::serde_base64")] pub Vec<u8>);
+pub struct ByteVec(#[serde(with = "crate::utils::serde_base64")] Vec<u8>);
 
-impl fmt::Debug for ByteVec {
-    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        if cfg!(debug_assertions) {
-            write!(f, "{:?}", self.0)
-        } else {
-            write!(f, "ByteVec")
-        }
+impl std::fmt::Debug for ByteVec {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        f.write_str(&crate::utils::base64_encode(&self.0))
+    }
+}
+
+impl<T: Into<Vec<u8>>> From<T> for ByteVec {
+    fn from(into_vec: T) -> Self {
+        Self(into_vec.into())
+    }
+}
+
+impl AsRef<[u8]> for ByteVec {
+    fn as_ref(&self) -> &[u8] {
+        &self.0
+    }
+}
+
+impl std::ops::Deref for ByteVec {
+    type Target = [u8];
+    fn deref(&self) -> &Self::Target {
+        &self.0
     }
 }
 
@@ -31,6 +44,6 @@ mod tests {
         let b64 = serde_json::to_string(&ByteVec(BYTES.to_vec())).unwrap();
         assert_eq!(b64, BASE64_JSON);
         let bytes: ByteVec = serde_json::from_str(&b64).unwrap();
-        assert_eq!(bytes.as_slice(), BYTES);
+        assert_eq!(bytes.as_ref(), BYTES);
     }
 }

src/lib.rs

@@ -58,9 +58,6 @@
 //!                This pulls in the [p256](https://crates.io/crates/p256) and [rand](https://crates.io/crates/rand) crates.
 //! * `jsonwebtoken` - enables conversions to types in the [jsonwebtoken](https://crates.io/crates/jsonwebtoken) crate.
 
-#[macro_use]
-extern crate serde;
-
 mod byte_array;
 mod byte_vec;
 mod key_ops;
@@ -69,6 +66,7 @@ mod tests;
 mod utils;
 
 use std::borrow::Cow;
+use std::fmt;
 
 use generic_array::typenum::U32;
 use serde::{Deserialize, Serialize};
@@ -308,7 +306,7 @@ impl Key {
                 ]);
                 let oids = &[Some(&rsa_encryption_oid), None];
                 let write_bytevec = |writer: DERWriter<'_>, vec: &ByteVec| {
-                    let bigint = BigUint::from_bytes_be(vec.as_slice());
+                    let bigint = BigUint::from_bytes_be(&vec);
                     writer.write_biguint(&bigint);
                 };
 
@@ -435,7 +433,7 @@ impl Key {
     }
 }
 
-#[derive(Clone, Debug, PartialEq, Eq, Serialize, Deserialize)]
+#[derive(Clone, PartialEq, Eq, Serialize, Deserialize)]
 #[serde(tag = "crv")]
 pub enum Curve {
     /// Parameters of the prime256v1 (P256) curve.
@@ -451,6 +449,18 @@ pub enum Curve {
     },
 }
 
+impl fmt::Debug for Curve {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        match self {
+            Self::P256 { x, y, .. } => f
+                .debug_struct("Curve:P256")
+                .field("x", x)
+                .field("y", y)
+                .finish(),
+        }
+    }
+}
+
 #[derive(Clone, Debug, PartialEq, Eq, Serialize, Deserialize)]
 pub struct RsaPublic {
     /// The standard public exponent, 65537.
@@ -487,7 +497,7 @@ impl<'de> Deserialize<'de> for PublicExponent {
     }
 }
 
-#[derive(Clone, Debug, PartialEq, Eq, Serialize, Deserialize)]
+#[derive(Clone, PartialEq, Eq, Serialize, Deserialize)]
 pub struct RsaPrivate {
     /// Private exponent.
     pub d: ByteVec,
@@ -508,6 +518,12 @@ pub struct RsaPrivate {
     pub qi: Option<ByteVec>,
 }
 
+impl fmt::Debug for RsaPrivate {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        f.write_str("RsaPrivate")
+    }
+}
+
 #[derive(Clone, Copy, Debug, PartialEq, Eq, Serialize, Deserialize)]
 pub enum KeyUse {
     #[serde(rename = "sig")]

src/utils.rs

@@ -8,7 +8,7 @@ fn base64_config() -> base64::Config {
     base64::Config::new(base64::CharacterSet::UrlSafe, false /* pad */)
 }
 
-fn base64_encode(bytes: impl AsRef<[u8]>) -> String {
+pub(crate) fn base64_encode(bytes: impl AsRef<[u8]>) -> String {
     base64::encode_config(bytes, base64_config())
 }