05961578 is referenced by 16 patents and cites 2 patents.

In a microcomputer incorporating a microprocessor, the coprocessor having product-sum operation arithmetic units executes residue multiplications given by "A=A.multidot.B.multidot.R.sup.-1 mod N+kN", "A=A.sup.2 .multidot.R.sup.-1 mod N+kN" and "A=A.multidot.R.sup.-1 mod N 30 kN" and is provided with a multiplication function of executing a preprocessing "R.sup.2 mod N" at high speed. It is possible to perform a power-residue operation "X.sup.Y mod N" at high speed by the microprocessor, using these calculation functions of the coprocessor.

Title
Data processor and microcomputer
Application Number
8/883235
Publication Number
5961578
Application Date
June 26, 1997
Publication Date
October 5, 1999
Inventor
Kunihiko Nakada
Koganei
JP
Agent
Fay Sharpe Beall Fagan Minnich & McKee
Assignee
Hitachi
JP
IPC
G06F 7/38
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