Initial commit - QR Master application

src/lib/hash.ts

@@ -0,0 +1,49 @@
+import crypto from 'crypto';
+import { env } from './env';
+
+/**
+ * Hash an IP address for privacy
+ * Uses a salt from environment variables to ensure consistent hashing
+ */
+export function hashIP(ip: string): string {
+  const salt = env.IP_SALT || 'default-salt-change-in-production';
+  return crypto
+    .createHash('sha256')
+    .update(ip + salt)
+    .digest('hex')
+    .substring(0, 16); // Use first 16 chars for storage efficiency
+}
+
+/**
+ * Generate a random slug for QR codes
+ */
+export function generateSlug(title?: string): string {
+  const base = title 
+    ? title.toLowerCase().replace(/[^a-z0-9]+/g, '-').substring(0, 20)
+    : 'qr';
+  const random = Math.random().toString(36).substring(2, 8);
+  return `${base}-${random}`;
+}
+
+/**
+ * Generate a secure API key
+ */
+export function generateApiKey(): string {
+  return 'qrm_' + crypto.randomBytes(32).toString('hex');
+}
+
+/**
+ * Hash a password (for comparison with bcrypt hashed passwords)
+ */
+export async function hashPassword(password: string): Promise<string> {
+  const bcrypt = await import('bcryptjs');
+  return bcrypt.hash(password, 12);
+}
+
+/**
+ * Compare a plain password with a hashed password
+ */
+export async function comparePassword(password: string, hash: string): Promise<boolean> {
+  const bcrypt = await import('bcryptjs');
+  return bcrypt.compare(password, hash);
+}