20240410 serde

src/compact.rs

@@ -244,6 +244,45 @@ impl fmt::Display for JwsCompact {
     }
 }
 
+impl Serialize for JwsCompact {
+    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: serde::Serializer,
+    {
+        let self_str = self.to_string();
+        serializer.serialize_str(&self_str)
+    }
+}
+
+struct JwsCompactVisitor;
+
+impl<'de> serde::de::Visitor<'de> for JwsCompactVisitor {
+    type Value = JwsCompact;
+
+    fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
+        formatter.write_str("a compact JWS which consists of three base64 url safe unpadded strings separated with '.'")
+    }
+
+    fn visit_str<E>(self, v: &str) -> Result<Self::Value, E>
+    where
+        E: serde::de::Error,
+    {
+        JwsCompact::from_str(v)
+            .map_err(|_|
+                serde::de::Error::invalid_value(serde::de::Unexpected::Str(v), &self)
+            )
+    }
+}
+
+impl<'de> Deserialize<'de> for JwsCompact {
+    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
+    where
+        D: serde::Deserializer<'de>,
+    {
+        deserializer.deserialize_str(JwsCompactVisitor)
+    }
+}
+
 impl JwsVerifiable for JwsCompact {
     type Verified = Jws;
 

src/crypto/es256.rs

@@ -205,8 +205,7 @@ impl JwsEs256Signer {
             .and_then(|der| hash::hash(digest, &der))
             .map(|hashout| {
                 let mut s = hex::encode(hashout);
-                // 192 bits
-                s.truncate(48);
+                s.truncate(KID_LEN);
                 s
             })
             .map_err(|e| {
@@ -433,8 +432,7 @@ impl TryFrom<&Jwk> for JwsEs256Verifier {
                         .and_then(|der| hash::hash(digest, &der))
                         .map(|hashout| {
                             let mut s = hex::encode(hashout);
-                            // 192 bits
-                            s.truncate(48);
+                            s.truncate(KID_LEN);
                             s
                         })
                         .map_err(|e| {