1 files changed, 16 insertions, 0 deletions
diff --git a/ext/node/polyfills/internal/crypto/_keys.ts b/ext/node/polyfills/internal/crypto/_keys.ts
new file mode 100644
index 000000000..794582bf1
--- /dev/null
+++ b/ext/node/polyfills/internal/crypto/_keys.ts
@@ -0,0 +1,16 @@
+// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
+import { kKeyObject } from "internal:deno_node/polyfills/internal/crypto/constants.ts";
+
+export const kKeyType = Symbol("kKeyType");
+
+export function isKeyObject(obj: unknown): boolean {
+  return (
+    obj != null && (obj as Record<symbol, unknown>)[kKeyType] !== undefined
+  );
+}
+
+export function isCryptoKey(obj: unknown): boolean {
+  return (
+    obj != null && (obj as Record<symbol, unknown>)[kKeyObject] !== undefined
+  );
+}