Finished database management and user authentication

HopFrame.Api/EncryptionManager.cs

@@ -0,0 +1,17 @@
+using Microsoft.AspNetCore.Cryptography.KeyDerivation;
+
+namespace HopFrame.Api;
+
+public static class EncryptionManager {
+
+    public static string Hash(string input, byte[] salt, KeyDerivationPrf method = KeyDerivationPrf.HMACSHA256) {
+        return Convert.ToBase64String(KeyDerivation.Pbkdf2(
+            password: input,
+            salt: salt,
+            prf: method,
+            iterationCount: 100000,
+            numBytesRequested: 256 / 8
+        ));
+    }
+    
+}