feat: Implement username/password authentication and registration features

app/lib/utils.ts

@@ -3,4 +3,17 @@ import { twMerge } from "tailwind-merge"
 
 export function cn(...inputs: ClassValue[]) {
   return twMerge(clsx(inputs))
-} 
+}
+
+export async function hashPassword(password: string): Promise<string> {
+  const encoder = new TextEncoder()
+  const salt = process.env.AUTH_SECRET || ''
+  const data = encoder.encode(password + salt)
+  const hash = await crypto.subtle.digest('SHA-256', data)
+  return btoa(String.fromCharCode(...new Uint8Array(hash)))
+}
+
+export async function comparePassword(password: string, hashedPassword: string): Promise<boolean> {
+  const hash = await hashPassword(password)
+  return hash === hashedPassword
+}