In this work, we introduce a strong Designated Verifier Signature (DVS) scheme that incorporates a message recovery mechanism inspired by the concept of the Universal Designated Verifier Signature (UDVS) scheme. It is worth noting that Saeednia's strong designated verifier signature scheme fails to guarantee the privacy of the signature, making it unsuitable for certain applications such as medical record certificates or voting systems. To overcome this limitation, we extend Lee's strong designated verifier signature with a message recovery scheme to develop a universal designated verifier signature scheme. This universal designated verifier scheme is crafted to safeguard the privacy of signature holders, ensuring that only designated verifiers can authenticate the true signer and recover the messages.

翻译：本文提出了一种强指定验证者签名方案，该方案融合了受通用指定验证者签名方案概念启发的消息恢复机制。值得注意的是，Saeednia的强指定验证者签名方案无法保证签名的隐私性，因此不适用于医疗记录证书或投票系统等特定应用场景。为克服这一局限，我们在Lee的强指定验证者消息恢复签名方案基础上进行扩展，构建了一种通用指定验证者签名方案。该通用指定验证者方案旨在保护签名持有者的隐私，确保仅指定验证者能够验证真实签名者身份并恢复消息内容。