Implement user registration and email verification features

app/utils/emailVerification.util.js

@@ -0,0 +1,28 @@
+//app/utils/emailVerification.util.js
+const crypto = require("crypto");
+
+/**
+ * Generate a cryptographically secure
+ * random email-verification token.
+ */
+const generateEmailVerificationToken = () => {
+  return crypto.randomBytes(32).toString("hex");
+};
+
+
+/**
+ * Hash verification token before
+ * storing it in database.
+ */
+const hashEmailVerificationToken = (token) => {
+  return crypto
+    .createHash("sha256")
+    .update(token)
+    .digest("hex");
+};
+
+
+module.exports = {
+  generateEmailVerificationToken,
+  hashEmailVerificationToken,
+};