feat: add example

examples/hmac.go

@@ -0,0 +1,34 @@
+package main
+
+import (
+	"crypto/rand"
+	"encoding/base64"
+	"fmt"
+	"log"
+)
+
+func GenerateSecretKey() (string, error) {
+	// Create a byte slice to hold 32 random bytes
+	key := make([]byte, 32)
+
+	// Fill the slice with secure random bytes
+	_, err := rand.Read(key)
+	if err != nil {
+		return "", err
+	}
+
+	// Encode the byte slice to a Base64 string
+	secretKey := base64.StdEncoding.EncodeToString(key)
+
+	// Return the first 32 characters
+	return secretKey[:32], nil
+}
+
+func main() {
+	secretKey, err := GenerateSecretKey()
+	if err != nil {
+		log.Fatalf("Error generating secret key: %v", err)
+	}
+
+	fmt.Println("Generated Secret Key:", secretKey)
+}