diff --git a/xy_sh/internal/config/config.go b/xy_sh/internal/config/config.go
new file mode 100644
index 0000000..7008161
--- /dev/null
+++ b/xy_sh/internal/config/config.go
@@ -0,0 +1,35 @@
+package config
+
+import (
+	"os"
+	"time"
+)
+
+type Config struct {
+	ServerPort   string
+	SM3Salt      string
+	SM4Key       string
+	ReadTimeout  time.Duration
+	WriteTimeout time.Duration
+}
+
+func LoadConfig() *Config {
+	port := getEnv("SERVER_PORT", "8080")
+	sm3Salt := getEnv("SM3_SALT", "default_salt_change_me")
+	sm4Key := getEnv("SM4_KEY", "default_key_16by")
+
+	return &Config{
+		ServerPort:   port,
+		SM3Salt:      sm3Salt,
+		SM4Key:       sm4Key,
+		ReadTimeout:  30 * time.Second,
+		WriteTimeout: 30 * time.Second,
+	}
+}
+
+func getEnv(key, defaultValue string) string {
+	if value := os.Getenv(key); value != "" {
+		return value
+	}
+	return defaultValue
+}
\ No newline at end of file