test: Get HMAC tests passing

Author: sidrubs

src/builder.rs

@@ -12,6 +12,7 @@ type HmacSha256 = Hmac<Sha256>;
 type HmacSha384 = Hmac<Sha384>;
 type HmacSha512 = Hmac<Sha512>;
 
+#[derive(Debug)]
 pub(crate) struct HmacSecret(Vec<u8>);
 
 impl HmacSecret {
@@ -111,3 +112,46 @@ impl JwtVerifier for Hs384 {
         Algorithm::HS384
     }
 }
+
+pub struct Hs512(HmacSha512);
+
+impl Hs512 {
+    pub(crate) fn new(secret: HmacSecret) -> Result<Self> {
+        let inner = HmacSha512::new_from_slice(&secret.0)
+            .map_err(|_e| crate::errors::ErrorKind::InvalidKeyFormat)?;
+
+        Ok(Self(inner))
+    }
+}
+
+impl Signer<Vec<u8>> for Hs512 {
+    fn try_sign(&self, msg: &[u8]) -> std::result::Result<Vec<u8>, signature::Error> {
+        let mut signer = self.0.clone();
+        signer.reset();
+        signer.update(msg);
+
+        Ok(signer.finalize().into_bytes().to_vec())
+    }
+}
+
+impl JwtSigner for Hs512 {
+    fn algorithm(&self) -> Algorithm {
+        Algorithm::HS512
+    }
+}
+
+impl Verifier<Vec<u8>> for Hs512 {
+    fn verify(&self, msg: &[u8], signature: &Vec<u8>) -> std::result::Result<(), signature::Error> {
+        let mut verifier = self.0.clone();
+        verifier.reset();
+        verifier.update(msg);
+
+        verifier.verify_slice(signature).map_err(|e| signature::Error::from_source(e))
+    }
+}
+
+impl JwtVerifier for Hs512 {
+    fn algorithm(&self) -> Algorithm {
+        Algorithm::HS512
+    }
+}