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公开(公告)号:EP1732052A1
公开(公告)日:2006-12-13
申请号:EP05727024.1
申请日:2005-03-22
发明人: FUTA, Yuichi, c/o Matsushita Elect. Ind. Co., Ltd. , OHMORI, Motoji, c/o Matsushita El. Ind. Co., Ltd. , SHIZUYA, Hiroyuki, c/o Matsushita El.Ind.Co., Ltd. , MAMBO, Masahiro, c/o Matsushita El.Ind.Co., Ltd. , YAMAMICHI, Masato
摘要: A computer system that makes it difficult to analyze the content of a calculation. A power operation unit (262) performs the following operations using the input data "a" and "b": g a = g a mod n, g b = g b mod n. Next, a multiplication unit (264) performs the following calculation using g a and g b : g ab = g a × g b mod n. Next, a discrete logarithm calculation unit (266) calculates c i mod p i - 1 to satisfy g ab = g ci mod p i (i = 1, 2, 3,...,k). Next, a CRT unit (267) calculates "c" to satisfy c i = c mod p i - 1 (i = 1, 2, 3,...,k) using the Chinese remainder theorem CRT.
摘要翻译: 使计算机系统内容难以分析的计算机系统。 电力操作单元(262)使用输入数据“a”和“b”执行以下操作:g a = g a mod n,g b = g b mod n。 接下来,乘法单元(264)使用g a和g b执行以下计算:g ab = g a×g b mod n。 接下来,离散对数计算单元(266)计算c i mod p i-1以满足g ab = g ci mod p i(i = 1,2,3,...,k)。 接下来,CRT单元(267)使用中文余数定理CRT来计算“c”以满足c i = c mod p i-1(i = 1,2,3,...,k)。