Function randomHex

internal/payment/webhook.go:479–486

(n int)

}

func randomHex(n int) string {
	buf := make([]byte, n)
	if _, err := rand.Read(buf); err != nil {
		// crypto/rand 在正常系统上不可能失败；若失败则 panic 而非回退到可预测值
		panic(fmt.Sprintf("payment: crypto/rand.Read failed: %v", err))
	}
	return fmt.Sprintf("%x", buf)
}