signature: ECDSA OSSL_FUNC_SIGNATURE_DIGEST_SIGN_INIT

Signed-off-by: Tomás González <[email protected]>

parsec-openssl-provider/src/signature/mod.rs

@@ -194,16 +194,36 @@ unsafe extern "C" fn parsec_provider_signature_digest_sign_init(
         let prov_key = Arc::from_raw(provkey as *const RwLock<ParsecProviderKeyObject>);
 
         reader_sig_ctx.keyobj = Some(prov_key.clone());
+        let key_data = match reader_sig_ctx.keyobj {
+            None => {
+                return Err("Key Object not set. This should be done through sign_init()".into())
+            }
+            Some(ref keyobj) => keyobj.read().unwrap(),
+        };
 
+        let key_name = match key_data.get_key_name() {
+            None => return Err("Key name not set in the Key Object".into()),
+            Some(ref name) => name,
+        };
         // Currently we only support SHA256 hash function.
         // Return error if any other function is selected.
         if let Ok(hash_function) = CStr::from_ptr(mdname).to_str() {
             if hash_function != "SHA256" && hash_function != "SHA2-256" {
                 return Err("Invalid hash function".into());
             }
         }
-
-        Ok(parsec_provider_signature_set_params(ctx, params))
+        let key_attributes = key_data
+            .get_provctx()
+            .get_client()
+            .key_attributes(key_name)
+            .map_err(|e| format!("Failed to get specified key's attributes: {}", e))?;
+        match key_attributes.key_type {
+            Type::RsaKeyPair => Ok(parsec_provider_signature_set_params(ctx, params)),
+            Type::EccKeyPair {
+                curve_family: EccFamily::SecpR1,
+            } => Ok(parsec_provider_signature_ecdsa_set_params(ctx, params)),
+            _ => Err("Key type not recognized".to_string().into()),
+        }
     });
 
     match result {