The secure property of chaotic encryption system based on chaos synchronization from chosenciphertext attack under Kerckhoff principle is discussed. The key (parameter) of the receiver can be obtained by chosenciphert...The secure property of chaotic encryption system based on chaos synchronization from chosenciphertext attack under Kerckhoff principle is discussed. The key (parameter) of the receiver can be obtained by chosenciphertext attack. The encryption systems based on chaotic synchronization do not have high privacy.展开更多
Nowadays,indistinguishability against adaptive chosen-ciphertext attacks（IND-CCA2） has been widely accepted as a proper security criterion for encryption schemes.In this paper,an efficient conversion is proposed to ...Nowadays,indistinguishability against adaptive chosen-ciphertext attacks（IND-CCA2） has been widely accepted as a proper security criterion for encryption schemes.In this paper,an efficient conversion is proposed to satisfy the IND-CCA2 security.It uses the random oracle methodology and the idea of hybrid encryption,and can enhance any Diffie-Hellman based encryption scheme,which is only one-way under plaintext-checking attack.Compared with other existing conversions,this conversion has the advantages of short ciphertext and low computation overhead,especially when it is applied to the multi-recipient setting.展开更多
文摘The secure property of chaotic encryption system based on chaos synchronization from chosenciphertext attack under Kerckhoff principle is discussed. The key (parameter) of the receiver can be obtained by chosenciphertext attack. The encryption systems based on chaotic synchronization do not have high privacy.
基金Supported by the National Natural Science Foundation ofChina (60903178)
文摘Nowadays,indistinguishability against adaptive chosen-ciphertext attacks（IND-CCA2） has been widely accepted as a proper security criterion for encryption schemes.In this paper,an efficient conversion is proposed to satisfy the IND-CCA2 security.It uses the random oracle methodology and the idea of hybrid encryption,and can enhance any Diffie-Hellman based encryption scheme,which is only one-way under plaintext-checking attack.Compared with other existing conversions,this conversion has the advantages of short ciphertext and low computation overhead,especially when it is applied to the multi-recipient setting.
