At the invitation of the Shenyang People’s Association for Friendship with Foreign Countries, a delegation led by Nakayama Kenji, chief of the International Strategy Section of Sasebo City, Nagasaki prefecture, Japan...At the invitation of the Shenyang People’s Association for Friendship with Foreign Countries, a delegation led by Nakayama Kenji, chief of the International Strategy Section of Sasebo City, Nagasaki prefecture, Japan, visited Shenyang, Liaoning province, from June 13 to 17.展开更多
为了评估Piccolo密码算法的功耗分析安全性,该文提出一种针对Piccolo末轮的攻击模型,基于SASEBO(Side-channel Attack Standard Evaluation BOard)实测功耗数据对该算法进行了相关性功耗分析攻击。针对Piccolo末轮运算中包含白化密钥的...为了评估Piccolo密码算法的功耗分析安全性,该文提出一种针对Piccolo末轮的攻击模型,基于SASEBO(Side-channel Attack Standard Evaluation BOard)实测功耗数据对该算法进行了相关性功耗分析攻击。针对Piccolo末轮运算中包含白化密钥的特点,将末轮攻击密钥(包括轮密钥RK24L,RK24R,WK2,WK3)分成4段子密钥,逐个完成各个子密钥的攻击,使80位种子密钥的搜索空间从280降低到(2×220+2×212+216),使种子密钥的恢复成为可能。攻击结果表明,在实测功耗数据情况下,3000条功耗曲线即可恢复80位种子密钥,证实了该攻击模型的有效性和Piccolo硬件面向功耗分析的脆弱性,研究并采取切实有效的防护措施势在必行。展开更多
文摘At the invitation of the Shenyang People’s Association for Friendship with Foreign Countries, a delegation led by Nakayama Kenji, chief of the International Strategy Section of Sasebo City, Nagasaki prefecture, Japan, visited Shenyang, Liaoning province, from June 13 to 17.
文摘为了评估Piccolo密码算法的功耗分析安全性,该文提出一种针对Piccolo末轮的攻击模型,基于SASEBO(Side-channel Attack Standard Evaluation BOard)实测功耗数据对该算法进行了相关性功耗分析攻击。针对Piccolo末轮运算中包含白化密钥的特点,将末轮攻击密钥(包括轮密钥RK24L,RK24R,WK2,WK3)分成4段子密钥,逐个完成各个子密钥的攻击,使80位种子密钥的搜索空间从280降低到(2×220+2×212+216),使种子密钥的恢复成为可能。攻击结果表明,在实测功耗数据情况下,3000条功耗曲线即可恢复80位种子密钥,证实了该攻击模型的有效性和Piccolo硬件面向功耗分析的脆弱性,研究并采取切实有效的防护措施势在必行。