module creation

adapters/identity/services/InMemoryPasswordHashingService.ts

@@ -0,0 +1,22 @@
+/**
+ * In-Memory Password Hashing Service
+ * 
+ * Provides basic password hashing and comparison for demo/development purposes.
+ * NOT FOR PRODUCTION USE - uses a simple string reversal as "hashing".
+ */
+
+import type { IPasswordHashingService } from '@gridpilot/core/identity/domain/services/PasswordHashingService';
+
+export class InMemoryPasswordHashingService implements IPasswordHashingService {
+  async hash(plain: string): Promise<string> {
+    // In a real application, use a robust hashing library like bcrypt or Argon2.
+    // For demo, we'll just reverse the password and add a salt-like prefix.
+    const salt = 'demo_salt_';
+    return Promise.resolve(salt + plain.split('').reverse().join(''));
+  }
+
+  async verify(plain: string, hash: string): Promise<boolean> {
+    const hashedPlain = await this.hash(plain);
+    return Promise.resolve(hashedPlain === hash);
+  }
+}