Continuously non-malleable codes from block ciphers in split-state model  

作　　者：Anit Kumar Ghosal Dipanwita Roychowdhury 

机构地区：[1]Department of Computer Science and Engineering,I Kharagpur,Kharagpur,West Bengal,India

出　　处：《Cybersecurity》2024年第2期68-80,共13页网络空间安全科学与技术（英文）

摘　　要：Non-malleable code is an encoding scheme that is useful in situations where traditional error correction or detection is impossible to achieve.It ensures with high probability that decoded message is either completely unrelated or the original one,when tampering has no effect.Usually,standard version of non-malleable codes provide security against one time tampering attack.Block ciphers are successfully employed in the construction of non-malleable codes.Such construction fails to provide security when an adversary tampers the codeword more than once.Continuously non-malleable codes further allow an attacker to tamper the message for polynomial number of times.In this work,we propose continuous version of non-malleable codes from block ciphers in split-state model.Our construction provides security against polynomial number of tampering attacks and it preserves non-malleability.When the tam-pering experiment triggers self-destruct,the security of continuously non-malleable code reduces to security of the underlying leakage resilient storage.

关 键 词：Block cipher Non-malleable code Split-state model Tamper-resilient cryptography 

分 类 号：TN915[电子电信—通信与信息系统]