Blockchain technology provides efficient and secure solutions to various online activities by utilizing a wide range of cryptographic tools. In this article, we survey the existing literature on post-quantum secure digital signatures that possess exotic advanced features and that are crucial cryptographic tools used in the blockchain ecosystem for (1) account management, (2) consensus efficiency, (3) empowering scriptless blockchain, and (4) privacy. The exotic signatures that we particularly focus on in this work are the following: multi-/aggregate, threshold, adaptor, blind, and ring signatures. Herein the term ”exotic” refers to signatures with properties that are not just beyond the norm for signatures, e.g., unforgeability, but also imbue new forms of functionalities. Our treatment of such exotic signatures includes discussions on existing challenges and future research directions in the post-quantum space. We hope that this article will help to foster further research to make post-quantum cryptography more accessible so that blockchain systems can be made ready in advance of the approaching quantum threats.

区块链技术利用广泛的加密工具为各种在线活动提供高效、安全的解决方案。在这篇文章中，我们调查了现有的关于具有奇异的后量子安全数字签名的文献高级功能，它们是区块链生态系统中使用的关键加密工具，用于 (1) 账户管理，(2) 共识效率，(3) 授权无脚本区块链，以及 (4) 隐私。我们在这项工作中特别关注的奇异签名如下：多重/聚合、阈值、适配器、盲签名和环签名。这里的术语“奇异的”指的是签名的属性不仅超出签名的规范，例如不可伪造性，而且还包含新形式的功能。我们对此类奇异签名的处理包括对后量子空间中现有挑战和未来研究方向的讨论。