延展性
计算机科学
计算机安全
签名(拓扑)
数字签名
数据库事务
事务处理
公钥密码术
散列函数
数字加密货币
恶意软件
密文
加密
数据库
数学
几何学
作者
Xiaoqin Feng,Jianfeng Ma,Huaxiong Wang,Yinbin Miao,Ximeng Liu,Zhongyuan Jiang
标识
DOI:10.1109/tifs.2023.3293402
摘要
The surging interest in cryptocurrency has revitalized the research for digital signature schemes with strong security. In particular, signature schemes are investigated to resist the malleability attacks in cryptocurrency platforms. However, existing signature schemes only conquer partial malleability attacks due to various sources of attacks. Other solutions of new transaction realizations cannot simultaneously avoid the malleability attacks on both standard and contract transactions. Furthermore, the malleability attack becomes more stubborn in fast clearing applications. In this paper, we propose SigNT, an accessional signature scheme with unmalleable transaction implementations. The key of SigNT is an improved interactive signature scheme for securely instant confirmation of transactions. Unlike standard signatures, this signature is generated by the owner and block producers. Combining it with several other optimizations ( i.e ., hash execution of intermediate transactions and secret-based claiming conditions), SigNT achieves complete resistance against malleability attacks in both the standard and contract transactions. As an example, we show an implementation in Bitcoin with the “providing a deposit” protocol. The security analysis and comparative experiments demonstrate that SigNT has the best resistance against malleability attacks than previous malleability solutions. Besides, better performance is achieved than other schemes.
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