diff --git a/Makefile b/Makefile
index 30783b6..0da6588 100644
--- a/Makefile
+++ b/Makefile
@@ -35,7 +35,6 @@ mock:
 	mockgen -package mockdb -destination db/mock/store.go github.com/cukhoaimon/SimpleBank/db/sqlc Store
 
 proto:
-	rm -f pb/*.go # remove all previous files
 	protoc --proto_path=proto --go_out=pb --go_opt=paths=source_relative \
 	--go-grpc_out=pb --go-grpc_opt=paths=source_relative \
 	proto/*.proto
@@ -43,4 +42,4 @@ proto:
 tidy:
 	go mod tidy
 
-.PHONY: postgres createdb dropdb migrate-up migrate-down sqlc test server mock dbdocs proto tidymake
\ No newline at end of file
+.PHONY: postgres createdb dropdb migrate-up migrate-down sqlc test server mock dbdocs proto tidy
\ No newline at end of file
diff --git a/app.env b/app.env
index beb4e27..e6d3447 100644
--- a/app.env
+++ b/app.env
@@ -1,6 +1,7 @@
 DB_DRIVER=postgres
 DB_SOURCE=postgresql://root:secret@localhost:5432/simple_bank?sslmode=disable
-SERVER_ADDRESS=0.0.0.0:8080
+HTTP_SERVER_ADDRESS=0.0.0.0:8080
+GRPC_SERVER_ADDRESS=0.0.0.0:50051
 TOKEN_SYMMETRIC_KEY=12345678901234567890123456789012
 TOKEN_DURATION=15m
 REFRESH_TOKEN_DURATION=24h
\ No newline at end of file
diff --git a/gapi/converter.go b/gapi/converter.go
new file mode 100644
index 0000000..27ae5cd
--- /dev/null
+++ b/gapi/converter.go
@@ -0,0 +1,17 @@
+package gapi
+
+import (
+	db "github.com/cukhoaimon/SimpleBank/db/sqlc"
+	"github.com/cukhoaimon/SimpleBank/pb"
+	"google.golang.org/protobuf/types/known/timestamppb"
+)
+
+func convertUser(user db.User) *pb.User {
+	return &pb.User{
+		Username:          user.Username,
+		FullName:          user.FullName,
+		Email:             user.Email,
+		PasswordChangedAt: timestamppb.New(user.PasswordChangedAt),
+		CreatedAt:         timestamppb.New(user.CreatedAt),
+	}
+}
diff --git a/gapi/rpc_create_user.go b/gapi/rpc_create_user.go
new file mode 100644
index 0000000..a7cc304
--- /dev/null
+++ b/gapi/rpc_create_user.go
@@ -0,0 +1,44 @@
+package gapi
+
+import (
+	"context"
+	"errors"
+	db "github.com/cukhoaimon/SimpleBank/db/sqlc"
+	"github.com/cukhoaimon/SimpleBank/pb"
+	"github.com/cukhoaimon/SimpleBank/utils"
+	"github.com/lib/pq"
+	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/status"
+)
+
+func (server *Server) CreateUser(ctx context.Context, req *pb.CreateUserRequest) (*pb.CreateUserResponse, error) {
+	hashedPassword, err := utils.HashPassword(req.GetPassword())
+	if err != nil {
+		return nil, status.Errorf(codes.Internal, "fail to hash password: %s", err)
+	}
+
+	arg := db.CreateUserParams{
+		Username:       req.GetUsername(),
+		HashedPassword: hashedPassword,
+		FullName:       req.GetFullName(),
+		Email:          req.GetEmail(),
+	}
+
+	user, err := server.store.CreateUser(ctx, arg)
+	if err != nil {
+		var pqErr *pq.Error
+		if errors.As(err, &pqErr) {
+			switch pqErr.Code.Name() {
+			case "unique_violation":
+				return nil, status.Errorf(codes.AlreadyExists, "username already exists: %s", err)
+			}
+		}
+
+		return nil, status.Errorf(codes.Internal, "fail to create user: %s", err)
+	}
+
+	rsp := &pb.CreateUserResponse{
+		User: convertUser(user),
+	}
+	return rsp, nil
+}
diff --git a/gapi/rpc_login_user.go b/gapi/rpc_login_user.go
new file mode 100644
index 0000000..e704427
--- /dev/null
+++ b/gapi/rpc_login_user.go
@@ -0,0 +1,66 @@
+package gapi
+
+import (
+	"context"
+	"database/sql"
+	"errors"
+	db "github.com/cukhoaimon/SimpleBank/db/sqlc"
+	"github.com/cukhoaimon/SimpleBank/pb"
+	"github.com/cukhoaimon/SimpleBank/utils"
+	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/status"
+	"google.golang.org/protobuf/types/known/timestamppb"
+)
+
+func (server *Server) LoginUser(ctx context.Context, req *pb.LoginUserRequest) (*pb.LoginUserResponse, error) {
+	user, err := server.store.GetUser(ctx, req.GetUsername())
+	if err != nil {
+		if errors.Is(err, sql.ErrNoRows) {
+			return nil, status.Errorf(codes.NotFound, "user [%s] is not found in database", req.GetUsername())
+		}
+
+		return nil, status.Errorf(codes.Internal, "fail to get user [%s] from database", req.GetUsername())
+	}
+
+	err = utils.CheckPassword(req.Password, user.HashedPassword)
+	if err != nil {
+		return nil, status.Error(codes.Unauthenticated, "wrong password")
+
+	}
+
+	token, accessTokenPayload, err := server.tokenMaker.CreateToken(req.Username, server.config.TokenDuration)
+	if err != nil {
+		return nil, status.Error(codes.Internal, "fail to create access token")
+	}
+
+	refreshToken, refreshTokenPayload, err := server.tokenMaker.CreateToken(req.Username, server.config.RefreshTokenDuration)
+	if err != nil {
+		return nil, status.Error(codes.Internal, "fail to create refresh access token")
+	}
+
+	arg := db.CreateSessionParams{
+		ID:           accessTokenPayload.Id,
+		Username:     accessTokenPayload.Username,
+		RefreshToken: refreshToken,
+		UserAgent:    "",
+		ClientIp:     "",
+		IsBlocked:    false,
+		ExpiresAt:    refreshTokenPayload.ExpiredAt,
+	}
+
+	session, err := server.store.CreateSession(ctx, arg)
+	if err != nil {
+		return nil, status.Error(codes.Internal, "fail to create session")
+	}
+
+	res := &pb.LoginUserResponse{
+		SessionId:             session.ID.String(),
+		AccessToken:           token,
+		AccessTokenExpiresAt:  timestamppb.New(accessTokenPayload.ExpiredAt),
+		RefreshToken:          refreshToken,
+		RefreshTokenExpiresAt: timestamppb.New(refreshTokenPayload.ExpiredAt),
+		User:                  convertUser(user),
+	}
+
+	return res, nil
+}
diff --git a/gapi/server.go b/gapi/server.go
new file mode 100644
index 0000000..f53f619
--- /dev/null
+++ b/gapi/server.go
@@ -0,0 +1,32 @@
+package gapi
+
+import (
+	db "github.com/cukhoaimon/SimpleBank/db/sqlc"
+	"github.com/cukhoaimon/SimpleBank/pb"
+	"github.com/cukhoaimon/SimpleBank/token"
+	"github.com/cukhoaimon/SimpleBank/utils"
+)
+
+// Server serves gRPC request
+type Server struct {
+	pb.UnimplementedSimpleBankServer
+	config     utils.Config
+	tokenMaker token.Maker
+	store      db.Store
+}
+
+// NewServer will return new gRPC server
+func NewServer(store db.Store, config utils.Config) (*Server, error) {
+	maker, err := token.NewPasetoMaker(config.TokenSymmetricKey)
+	if err != nil {
+		return nil, err
+	}
+
+	server := &Server{
+		store:      store,
+		tokenMaker: maker,
+		config:     config,
+	}
+
+	return server, nil
+}
diff --git a/main.go b/main.go
index 5f177aa..7e806f1 100644
--- a/main.go
+++ b/main.go
@@ -2,7 +2,12 @@ package main
 
 import (
 	"database/sql"
+	"github.com/cukhoaimon/SimpleBank/gapi"
+	"github.com/cukhoaimon/SimpleBank/pb"
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/reflection"
 	"log"
+	"net"
 
 	"github.com/cukhoaimon/SimpleBank/api"
 	db "github.com/cukhoaimon/SimpleBank/db/sqlc"
@@ -24,12 +29,38 @@ func main() {
 	}
 
 	store := db.NewStore(conn)
+	runGRPCServer(store, config)
+}
+
+func runGinServer(store db.Store, config utils.Config) {
 	server, err := api.NewServer(store, config)
 	if err != nil {
 		log.Fatal("Cannot create server")
 	}
 
-	if err = server.Start(config.ServerAddress); err != nil {
+	if err = server.Start(config.HttpServerAddress); err != nil {
 		log.Fatal("Cannot start server")
 	}
 }
+
+func runGRPCServer(store db.Store, config utils.Config) {
+	server, err := gapi.NewServer(store, config)
+	if err != nil {
+		log.Fatal("Cannot create gRPC server")
+	}
+
+	gRPCServer := grpc.NewServer()
+	pb.RegisterSimpleBankServer(gRPCServer, server)
+	// allow client to know what RPCs currently available in server
+	reflection.Register(gRPCServer)
+
+	listener, err := net.Listen("tcp", config.GrpcServerAddress)
+	if err != nil {
+		log.Fatal("Cannot create tcp-listener for gRPC server")
+	}
+
+	log.Printf("start gRPC server at: %s", listener.Addr().String())
+	if err = gRPCServer.Serve(listener); err != nil {
+		log.Fatal("Cannot serve gRPC server")
+	}
+}
diff --git a/pb/rpc_create_user.pb.go b/pb/rpc_create_user.pb.go
index 7f4a713..11723f2 100644
--- a/pb/rpc_create_user.pb.go
+++ b/pb/rpc_create_user.pb.go
@@ -142,7 +142,7 @@ var File_rpc_create_user_proto protoreflect.FileDescriptor
 
 var file_rpc_create_user_proto_rawDesc = []byte{
 	0x0a, 0x15, 0x72, 0x70, 0x63, 0x5f, 0x63, 0x72, 0x65, 0x61, 0x74, 0x65, 0x5f, 0x75, 0x73, 0x65,
-	0x72, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x12, 0x02, 0x64, 0x62, 0x1a, 0x0a, 0x75, 0x73, 0x65,
+	0x72, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x12, 0x02, 0x70, 0x62, 0x1a, 0x0a, 0x75, 0x73, 0x65,
 	0x72, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x22, 0x7e, 0x0a, 0x11, 0x43, 0x72, 0x65, 0x61, 0x74,
 	0x65, 0x55, 0x73, 0x65, 0x72, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x12, 0x1a, 0x0a, 0x08,
 	0x75, 0x73, 0x65, 0x72, 0x6e, 0x61, 0x6d, 0x65, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x08,
@@ -153,7 +153,7 @@ var file_rpc_create_user_proto_rawDesc = []byte{
 	0x61, 0x73, 0x73, 0x77, 0x6f, 0x72, 0x64, 0x18, 0x04, 0x20, 0x01, 0x28, 0x09, 0x52, 0x08, 0x70,
 	0x61, 0x73, 0x73, 0x77, 0x6f, 0x72, 0x64, 0x22, 0x32, 0x0a, 0x12, 0x43, 0x72, 0x65, 0x61, 0x74,
 	0x65, 0x55, 0x73, 0x65, 0x72, 0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e, 0x73, 0x65, 0x12, 0x1c, 0x0a,
-	0x04, 0x75, 0x73, 0x65, 0x72, 0x18, 0x01, 0x20, 0x01, 0x28, 0x0b, 0x32, 0x08, 0x2e, 0x64, 0x62,
+	0x04, 0x75, 0x73, 0x65, 0x72, 0x18, 0x01, 0x20, 0x01, 0x28, 0x0b, 0x32, 0x08, 0x2e, 0x70, 0x62,
 	0x2e, 0x55, 0x73, 0x65, 0x72, 0x52, 0x04, 0x75, 0x73, 0x65, 0x72, 0x42, 0x25, 0x5a, 0x23, 0x67,
 	0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x63, 0x75, 0x6b, 0x68, 0x6f, 0x61,
 	0x69, 0x6d, 0x6f, 0x6e, 0x2f, 0x53, 0x69, 0x6d, 0x70, 0x6c, 0x65, 0x42, 0x61, 0x6e, 0x6b, 0x2f,
@@ -174,12 +174,12 @@ func file_rpc_create_user_proto_rawDescGZIP() []byte {
 
 var file_rpc_create_user_proto_msgTypes = make([]protoimpl.MessageInfo, 2)
 var file_rpc_create_user_proto_goTypes = []interface{}{
-	(*CreateUserRequest)(nil),  // 0: db.CreateUserRequest
-	(*CreateUserResponse)(nil), // 1: db.CreateUserResponse
-	(*User)(nil),               // 2: db.User
+	(*CreateUserRequest)(nil),  // 0: pb.CreateUserRequest
+	(*CreateUserResponse)(nil), // 1: pb.CreateUserResponse
+	(*User)(nil),               // 2: pb.User
 }
 var file_rpc_create_user_proto_depIdxs = []int32{
-	2, // 0: db.CreateUserResponse.user:type_name -> db.User
+	2, // 0: pb.CreateUserResponse.user:type_name -> pb.User
 	1, // [1:1] is the sub-list for method output_type
 	1, // [1:1] is the sub-list for method input_type
 	1, // [1:1] is the sub-list for extension type_name
diff --git a/pb/rpc_login_user.pb.go b/pb/rpc_login_user.pb.go
index 5b4760b..7208cbc 100644
--- a/pb/rpc_login_user.pb.go
+++ b/pb/rpc_login_user.pb.go
@@ -27,7 +27,7 @@ type LoginUserRequest struct {
 	unknownFields protoimpl.UnknownFields
 
 	Username string `protobuf:"bytes,1,opt,name=username,proto3" json:"username,omitempty"`
-	FullName string `protobuf:"bytes,2,opt,name=full_name,json=fullName,proto3" json:"full_name,omitempty"`
+	Password string `protobuf:"bytes,2,opt,name=password,proto3" json:"password,omitempty"`
 }
 
 func (x *LoginUserRequest) Reset() {
@@ -69,9 +69,9 @@ func (x *LoginUserRequest) GetUsername() string {
 	return ""
 }
 
-func (x *LoginUserRequest) GetFullName() string {
+func (x *LoginUserRequest) GetPassword() string {
 	if x != nil {
-		return x.FullName
+		return x.Password
 	}
 	return ""
 }
@@ -82,11 +82,11 @@ type LoginUserResponse struct {
 	unknownFields protoimpl.UnknownFields
 
 	User                  *User                  `protobuf:"bytes,1,opt,name=user,proto3" json:"user,omitempty"`
-	SessionID             string                 `protobuf:"bytes,2,opt,name=SessionID,proto3" json:"SessionID,omitempty"`
-	AccessToken           string                 `protobuf:"bytes,3,opt,name=AccessToken,proto3" json:"AccessToken,omitempty"`
-	RefreshToken          string                 `protobuf:"bytes,4,opt,name=RefreshToken,proto3" json:"RefreshToken,omitempty"`
-	AccessTokenExpiresAt  *timestamppb.Timestamp `protobuf:"bytes,5,opt,name=AccessTokenExpiresAt,proto3" json:"AccessTokenExpiresAt,omitempty"`
-	RefreshTokenExpiresAt *timestamppb.Timestamp `protobuf:"bytes,6,opt,name=RefreshTokenExpiresAt,proto3" json:"RefreshTokenExpiresAt,omitempty"`
+	SessionId             string                 `protobuf:"bytes,2,opt,name=session_id,json=sessionId,proto3" json:"session_id,omitempty"`
+	AccessToken           string                 `protobuf:"bytes,3,opt,name=access_token,json=accessToken,proto3" json:"access_token,omitempty"`
+	RefreshToken          string                 `protobuf:"bytes,4,opt,name=refresh_token,json=refreshToken,proto3" json:"refresh_token,omitempty"`
+	AccessTokenExpiresAt  *timestamppb.Timestamp `protobuf:"bytes,5,opt,name=access_token_expires_at,json=accessTokenExpiresAt,proto3" json:"access_token_expires_at,omitempty"`
+	RefreshTokenExpiresAt *timestamppb.Timestamp `protobuf:"bytes,6,opt,name=refresh_token_expires_at,json=refreshTokenExpiresAt,proto3" json:"refresh_token_expires_at,omitempty"`
 }
 
 func (x *LoginUserResponse) Reset() {
@@ -128,9 +128,9 @@ func (x *LoginUserResponse) GetUser() *User {
 	return nil
 }
 
-func (x *LoginUserResponse) GetSessionID() string {
+func (x *LoginUserResponse) GetSessionId() string {
 	if x != nil {
-		return x.SessionID
+		return x.SessionId
 	}
 	return ""
 }
@@ -167,37 +167,38 @@ var File_rpc_login_user_proto protoreflect.FileDescriptor
 
 var file_rpc_login_user_proto_rawDesc = []byte{
 	0x0a, 0x14, 0x72, 0x70, 0x63, 0x5f, 0x6c, 0x6f, 0x67, 0x69, 0x6e, 0x5f, 0x75, 0x73, 0x65, 0x72,
-	0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x12, 0x02, 0x64, 0x62, 0x1a, 0x0a, 0x75, 0x73, 0x65, 0x72,
+	0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x12, 0x02, 0x70, 0x62, 0x1a, 0x0a, 0x75, 0x73, 0x65, 0x72,
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+	0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
@@ -214,15 +215,15 @@ func file_rpc_login_user_proto_rawDescGZIP() []byte {
 
 var file_rpc_login_user_proto_msgTypes = make([]protoimpl.MessageInfo, 2)
 var file_rpc_login_user_proto_goTypes = []interface{}{
-	(*LoginUserRequest)(nil),      // 0: db.LoginUserRequest
-	(*LoginUserResponse)(nil),     // 1: db.LoginUserResponse
-	(*User)(nil),                  // 2: db.User
+	(*LoginUserRequest)(nil),      // 0: pb.LoginUserRequest
+	(*LoginUserResponse)(nil),     // 1: pb.LoginUserResponse
+	(*User)(nil),                  // 2: pb.User
 	(*timestamppb.Timestamp)(nil), // 3: google.protobuf.Timestamp
 }
 var file_rpc_login_user_proto_depIdxs = []int32{
-	2, // 0: db.LoginUserResponse.user:type_name -> db.User
-	3, // 1: db.LoginUserResponse.AccessTokenExpiresAt:type_name -> google.protobuf.Timestamp
-	3, // 2: db.LoginUserResponse.RefreshTokenExpiresAt:type_name -> google.protobuf.Timestamp
+	2, // 0: pb.LoginUserResponse.user:type_name -> pb.User
+	3, // 1: pb.LoginUserResponse.access_token_expires_at:type_name -> google.protobuf.Timestamp
+	3, // 2: pb.LoginUserResponse.refresh_token_expires_at:type_name -> google.protobuf.Timestamp
 	3, // [3:3] is the sub-list for method output_type
 	3, // [3:3] is the sub-list for method input_type
 	3, // [3:3] is the sub-list for extension type_name
diff --git a/pb/service_simple_bank.pb.go b/pb/service_simple_bank.pb.go
index fe4d46d..5bef963 100644
--- a/pb/service_simple_bank.pb.go
+++ b/pb/service_simple_bank.pb.go
@@ -23,18 +23,18 @@ var File_service_simple_bank_proto protoreflect.FileDescriptor
 
 var file_service_simple_bank_proto_rawDesc = []byte{
 	0x0a, 0x19, 0x73, 0x65, 0x72, 0x76, 0x69, 0x63, 0x65, 0x5f, 0x73, 0x69, 0x6d, 0x70, 0x6c, 0x65,
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@@ -42,16 +42,16 @@ var file_service_simple_bank_proto_rawDesc = []byte{
 }
 
 var file_service_simple_bank_proto_goTypes = []interface{}{
-	(*CreateUserRequest)(nil),  // 0: db.CreateUserRequest
-	(*LoginUserRequest)(nil),   // 1: db.LoginUserRequest
-	(*CreateUserResponse)(nil), // 2: db.CreateUserResponse
-	(*LoginUserResponse)(nil),  // 3: db.LoginUserResponse
+	(*CreateUserRequest)(nil),  // 0: pb.CreateUserRequest
+	(*LoginUserRequest)(nil),   // 1: pb.LoginUserRequest
+	(*CreateUserResponse)(nil), // 2: pb.CreateUserResponse
+	(*LoginUserResponse)(nil),  // 3: pb.LoginUserResponse
 }
 var file_service_simple_bank_proto_depIdxs = []int32{
-	0, // 0: db.SimpleBank.CreateUser:input_type -> db.CreateUserRequest
-	1, // 1: db.SimpleBank.LoginUser:input_type -> db.LoginUserRequest
-	2, // 2: db.SimpleBank.CreateUser:output_type -> db.CreateUserResponse
-	3, // 3: db.SimpleBank.LoginUser:output_type -> db.LoginUserResponse
+	0, // 0: pb.SimpleBank.CreateUser:input_type -> pb.CreateUserRequest
+	1, // 1: pb.SimpleBank.LoginUser:input_type -> pb.LoginUserRequest
+	2, // 2: pb.SimpleBank.CreateUser:output_type -> pb.CreateUserResponse
+	3, // 3: pb.SimpleBank.LoginUser:output_type -> pb.LoginUserResponse
 	2, // [2:4] is the sub-list for method output_type
 	0, // [0:2] is the sub-list for method input_type
 	0, // [0:0] is the sub-list for extension type_name
diff --git a/pb/service_simple_bank_grpc.pb.go b/pb/service_simple_bank_grpc.pb.go
index dffdb33..bcd5758 100644
--- a/pb/service_simple_bank_grpc.pb.go
+++ b/pb/service_simple_bank_grpc.pb.go
@@ -36,7 +36,7 @@ func NewSimpleBankClient(cc grpc.ClientConnInterface) SimpleBankClient {
 
 func (c *simpleBankClient) CreateUser(ctx context.Context, in *CreateUserRequest, opts ...grpc.CallOption) (*CreateUserResponse, error) {
 	out := new(CreateUserResponse)
-	err := c.cc.Invoke(ctx, "/db.SimpleBank/CreateUser", in, out, opts...)
+	err := c.cc.Invoke(ctx, "/pb.SimpleBank/CreateUser", in, out, opts...)
 	if err != nil {
 		return nil, err
 	}
@@ -45,7 +45,7 @@ func (c *simpleBankClient) CreateUser(ctx context.Context, in *CreateUserRequest
 
 func (c *simpleBankClient) LoginUser(ctx context.Context, in *LoginUserRequest, opts ...grpc.CallOption) (*LoginUserResponse, error) {
 	out := new(LoginUserResponse)
-	err := c.cc.Invoke(ctx, "/db.SimpleBank/LoginUser", in, out, opts...)
+	err := c.cc.Invoke(ctx, "/pb.SimpleBank/LoginUser", in, out, opts...)
 	if err != nil {
 		return nil, err
 	}
@@ -94,7 +94,7 @@ func _SimpleBank_CreateUser_Handler(srv interface{}, ctx context.Context, dec fu
 	}
 	info := &grpc.UnaryServerInfo{
 		Server:     srv,
-		FullMethod: "/db.SimpleBank/CreateUser",
+		FullMethod: "/pb.SimpleBank/CreateUser",
 	}
 	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
 		return srv.(SimpleBankServer).CreateUser(ctx, req.(*CreateUserRequest))
@@ -112,7 +112,7 @@ func _SimpleBank_LoginUser_Handler(srv interface{}, ctx context.Context, dec fun
 	}
 	info := &grpc.UnaryServerInfo{
 		Server:     srv,
-		FullMethod: "/db.SimpleBank/LoginUser",
+		FullMethod: "/pb.SimpleBank/LoginUser",
 	}
 	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
 		return srv.(SimpleBankServer).LoginUser(ctx, req.(*LoginUserRequest))
@@ -124,7 +124,7 @@ func _SimpleBank_LoginUser_Handler(srv interface{}, ctx context.Context, dec fun
 // It's only intended for direct use with grpc.RegisterService,
 // and not to be introspected or modified (even as a copy)
 var SimpleBank_ServiceDesc = grpc.ServiceDesc{
-	ServiceName: "db.SimpleBank",
+	ServiceName: "pb.SimpleBank",
 	HandlerType: (*SimpleBankServer)(nil),
 	Methods: []grpc.MethodDesc{
 		{
diff --git a/pb/user.pb.go b/pb/user.pb.go
index d0aac59..3d1ff2a 100644
--- a/pb/user.pb.go
+++ b/pb/user.pb.go
@@ -29,7 +29,7 @@ type User struct {
 	Username          string                 `protobuf:"bytes,1,opt,name=username,proto3" json:"username,omitempty"`
 	FullName          string                 `protobuf:"bytes,2,opt,name=full_name,json=fullName,proto3" json:"full_name,omitempty"`
 	Email             string                 `protobuf:"bytes,3,opt,name=email,proto3" json:"email,omitempty"`
-	PassWordChangedAt *timestamppb.Timestamp `protobuf:"bytes,4,opt,name=pass_word_changed_at,json=passWordChangedAt,proto3" json:"pass_word_changed_at,omitempty"`
+	PasswordChangedAt *timestamppb.Timestamp `protobuf:"bytes,4,opt,name=password_changed_at,json=passwordChangedAt,proto3" json:"password_changed_at,omitempty"`
 	CreatedAt         *timestamppb.Timestamp `protobuf:"bytes,5,opt,name=created_at,json=createdAt,proto3" json:"created_at,omitempty"`
 }
 
@@ -86,9 +86,9 @@ func (x *User) GetEmail() string {
 	return ""
 }
 
-func (x *User) GetPassWordChangedAt() *timestamppb.Timestamp {
+func (x *User) GetPasswordChangedAt() *timestamppb.Timestamp {
 	if x != nil {
-		return x.PassWordChangedAt
+		return x.PasswordChangedAt
 	}
 	return nil
 }
@@ -103,26 +103,26 @@ func (x *User) GetCreatedAt() *timestamppb.Timestamp {
 var File_user_proto protoreflect.FileDescriptor
 
 var file_user_proto_rawDesc = []byte{
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+	0x5f, 0x61, 0x74, 0x18, 0x05, 0x20, 0x01, 0x28, 0x0b, 0x32, 0x1a, 0x2e, 0x67, 0x6f, 0x6f, 0x67,
+	0x6c, 0x65, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x62, 0x75, 0x66, 0x2e, 0x54, 0x69, 0x6d, 0x65,
+	0x73, 0x74, 0x61, 0x6d, 0x70, 0x52, 0x09, 0x63, 0x72, 0x65, 0x61, 0x74, 0x65, 0x64, 0x41, 0x74,
+	0x42, 0x25, 0x5a, 0x23, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x63,
+	0x75, 0x6b, 0x68, 0x6f, 0x61, 0x69, 0x6d, 0x6f, 0x6e, 0x2f, 0x53, 0x69, 0x6d, 0x70, 0x6c, 0x65,
+	0x42, 0x61, 0x6e, 0x6b, 0x2f, 0x70, 0x62, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
@@ -139,12 +139,12 @@ func file_user_proto_rawDescGZIP() []byte {
 
 var file_user_proto_msgTypes = make([]protoimpl.MessageInfo, 1)
 var file_user_proto_goTypes = []interface{}{
-	(*User)(nil),                  // 0: db.User
+	(*User)(nil),                  // 0: pb.User
 	(*timestamppb.Timestamp)(nil), // 1: google.protobuf.Timestamp
 }
 var file_user_proto_depIdxs = []int32{
-	1, // 0: db.User.pass_word_changed_at:type_name -> google.protobuf.Timestamp
-	1, // 1: db.User.created_at:type_name -> google.protobuf.Timestamp
+	1, // 0: pb.User.password_changed_at:type_name -> google.protobuf.Timestamp
+	1, // 1: pb.User.created_at:type_name -> google.protobuf.Timestamp
 	2, // [2:2] is the sub-list for method output_type
 	2, // [2:2] is the sub-list for method input_type
 	2, // [2:2] is the sub-list for extension type_name
diff --git a/proto/rpc_create_user.proto b/proto/rpc_create_user.proto
index acfc02d..969c3ec 100644
--- a/proto/rpc_create_user.proto
+++ b/proto/rpc_create_user.proto
@@ -1,6 +1,6 @@
 syntax = "proto3";
 
-package db;
+package pb;
 
 import "user.proto";
 
diff --git a/proto/rpc_login_user.proto b/proto/rpc_login_user.proto
index 37d6926..eec0bf8 100644
--- a/proto/rpc_login_user.proto
+++ b/proto/rpc_login_user.proto
@@ -1,6 +1,6 @@
 syntax = "proto3";
 
-package db;
+package pb;
 
 import "user.proto";
 import "google/protobuf/timestamp.proto";
@@ -9,14 +9,14 @@ option go_package = "github.com/cukhoaimon/SimpleBank/pb";
 
 message LoginUserRequest {
   string username = 1;
-  string full_name = 2;
+  string password = 2;
 }
 
 message LoginUserResponse {
   User user = 1;
-  string SessionID = 2;
-  string AccessToken  = 3;
-  string RefreshToken = 4;
-  google.protobuf.Timestamp AccessTokenExpiresAt = 5;
-  google.protobuf.Timestamp RefreshTokenExpiresAt = 6;
+  string session_id = 2;
+  string access_token = 3;
+  string refresh_token = 4;
+  google.protobuf.Timestamp access_token_expires_at = 5;
+  google.protobuf.Timestamp refresh_token_expires_at = 6;
 }
\ No newline at end of file
diff --git a/proto/service_simple_bank.proto b/proto/service_simple_bank.proto
index e66c034..22e61b4 100644
--- a/proto/service_simple_bank.proto
+++ b/proto/service_simple_bank.proto
@@ -1,6 +1,6 @@
 syntax = "proto3";
 
-package db;
+package pb;
 
 import "rpc_create_user.proto";
 import "rpc_login_user.proto";
@@ -10,4 +10,5 @@ option go_package = "github.com/cukhoaimon/SimpleBank/pb";
 service SimpleBank {
   rpc CreateUser (CreateUserRequest) returns (CreateUserResponse) {}
   rpc LoginUser (LoginUserRequest) returns (LoginUserResponse) {}
-}
\ No newline at end of file
+}
+
diff --git a/proto/user.proto b/proto/user.proto
index 4b7936b..1fa69c4 100644
--- a/proto/user.proto
+++ b/proto/user.proto
@@ -1,6 +1,6 @@
 syntax = "proto3";
 
-package db;
+package pb;
 
 import "google/protobuf/timestamp.proto";
 
@@ -10,6 +10,6 @@ message User {
   string username = 1;
   string full_name = 2;
   string email = 3;
-  google.protobuf.Timestamp pass_word_changed_at = 4;
+  google.protobuf.Timestamp password_changed_at = 4;
   google.protobuf.Timestamp created_at = 5;
 }
diff --git a/utils/config.go b/utils/config.go
index a1633ae..0018bca 100644
--- a/utils/config.go
+++ b/utils/config.go
@@ -8,7 +8,8 @@ import (
 type Config struct {
 	DBDriver             string        `mapstructure:"DB_DRIVER"`
 	DBSource             string        `mapstructure:"DB_SOURCE"`
-	ServerAddress        string        `mapstructure:"SERVER_ADDRESS"`
+	HttpServerAddress    string        `mapstructure:"HTTP_SERVER_ADDRESS"`
+	GrpcServerAddress    string        `mapstructure:"GRPC_SERVER_ADDRESS"`
 	TokenDuration        time.Duration `mapstructure:"TOKEN_DURATION"`
 	RefreshTokenDuration time.Duration `mapstructure:"REFRESH_TOKEN_DURATION"`
 	TokenSymmetricKey    string        `mapstructure:"TOKEN_SYMMETRIC_KEY"`