Abstract
Digital currency regulation is a hot topic. Traditional privacy-enhanced digital currency system, like the CryptoNote, seeks to protect the privacy of senders and receivers. This paper presents a digital currency system based on the group signature scheme of Boneh et al. The system can protect users’ privacy and enable regulations. The system uses the one-time address technology of the CryptoNote to achieve unlinkability. It uses the group signature in a ring style to achieve untraceability. The group manager in a group signature can open a problematic transaction, restore the real identity of the sender, and revoke the private key of the sender if needed, which makes the digital currency regulatable.
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Acknowledgments
This work is supported by the National Key R&D Program of China (2017YFB0802500), Guangxi Key Laboratory of Cryptography and Information Security (No. GCIS201711), Natural Science Foundation of China (61672550), Fundamental Research Funds for the Central Universities (No. 17lgjc45). Natural Science Foundation of Guangdong Province of China (2018A0303130133).
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Tian, H., Luo, P., Su, Y. (2020). A Group Signature Based Digital Currency System. In: Zheng, Z., Dai, HN., Tang, M., Chen, X. (eds) Blockchain and Trustworthy Systems. BlockSys 2019. Communications in Computer and Information Science, vol 1156. Springer, Singapore. https://doi.org/10.1007/978-981-15-2777-7_1
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DOI: https://doi.org/10.1007/978-981-15-2777-7_1
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