diff --git a/BusinessLogic/BusinessLogic/UserLogic.cs b/BusinessLogic/BusinessLogic/UserLogic.cs
index d7fbc33..73f8156 100644
--- a/BusinessLogic/BusinessLogic/UserLogic.cs
+++ b/BusinessLogic/BusinessLogic/UserLogic.cs
@@ -1,4 +1,5 @@
-using Contracts.BindingModels;
+using BusinessLogic.Tools;
+using Contracts.BindingModels;
 using Contracts.BusinessLogicContracts;
 using Contracts.Converters;
 using Contracts.Exceptions;
@@ -28,7 +29,10 @@ namespace BusinessLogic.BusinessLogic
 		public UserViewModel Create(UserBindingModel model)
 		{
 			ArgumentNullException.ThrowIfNull(model);
-
+			// Проверяем пароль
+			_validatePassword(model.Password);
+			// Хешируем пароль
+			model.PasswordHash = PasswordHasher.Hash(model.Password);
 			var user = _userStorage.Insert(model);
 			if (user is null)
 			{
@@ -46,7 +50,7 @@ namespace BusinessLogic.BusinessLogic
 			var user = _userStorage.Delete(model);
 			if (user is null)
 			{
-				throw new Exception("Update operation failed.");
+				throw new ElementNotFoundException();
 			}
 
 			return UserConverter.ToView(user);
@@ -85,6 +89,11 @@ namespace BusinessLogic.BusinessLogic
 		{
 			ArgumentNullException.ThrowIfNull(model);
 
+			if (model.Password is not null)
+			{
+				_validatePassword(model.Password);
+				model.PasswordHash = PasswordHasher.Hash(model.Password);
+			}
 			var user = _userStorage.Update(model);
 			if (user is null)
 			{
@@ -92,5 +101,32 @@ namespace BusinessLogic.BusinessLogic
 			}
 			return UserConverter.ToView(user);
 		}
+
+		public UserViewModel Login(UserBindingModel model)
+		{
+			ArgumentNullException.ThrowIfNull(model);
+
+			var user = _userStorage.GetElement(new() { Email = model.Email });
+
+			if (user is null)
+			{
+				throw new ElementNotFoundException();
+			}
+			// Проверяем пароль
+			_validatePassword(model.Password);
+			if (PasswordHasher.Verify(model.Password, user.PasswordHash))
+			{
+				throw new AccountException("The passwords don't match.");
+			}
+			return UserConverter.ToView(user);
+		}
+
+		public void _validatePassword(string? password)
+		{
+			if (string.IsNullOrWhiteSpace(password))
+			{
+				throw new AccountException("The password is null.");
+			}
+		}
 	}
 }
\ No newline at end of file