【摘 要】
：
Introduced in 2001, a ring signature is a type of digital signature that can be created by anyone in a group of people.In contrast to group signatures, ring
【机 构】
：
HongKongPolytechnicUniversity
【出 处】
：
中国密码学会2017年密码算法学术会议
论文部分内容阅读
Introduced in 2001, a ring signature is a type of digital signature that can be created by anyone in a group of people.In contrast to group signatures, ring signatures are ad-hoc and do not require any coordination among the users.It is originally designed as a way to leak a secret.Since then.it has found applications as a building in other cryptographic primitives, such as optimistic fair exchange,designated verifier signatures and ad-hoc key exchange.In this talk, we are going to reviewexisting results on ring signatures and their variants.Next, we introduce Monero, one of the most popular blockchain-based crypto-currencies.In particular,we discuss how variants of ring signatures are applied in Monero to ensure its security and privacy.We conclude the talk with some open problems related to the use of ring signatures in blockchain-based crypto-currency and some promising directions.
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