JPS5642852A - Multiplication/division circuit - Google Patents
Multiplication/division circuitInfo
- Publication number
- JPS5642852A JPS5642852A JP11979379A JP11979379A JPS5642852A JP S5642852 A JPS5642852 A JP S5642852A JP 11979379 A JP11979379 A JP 11979379A JP 11979379 A JP11979379 A JP 11979379A JP S5642852 A JPS5642852 A JP S5642852A
- Authority
- JP
- Japan
- Prior art keywords
- register
- result
- contents
- multiplication
- multiplier
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
PURPOSE: To ensure an effective operation of ME(MODN), by giving a control to the arithmetic process based on the result of the binary expansion of the power multiplier.
CONSTITUTION: The data M, the divisor N and the power multiplier E are stored in the registers 2, 3 and 4 each. And the process is carried out as follows based on the result of the binary expansion of the multiplier E in the register 4. That is, the gate 8 is opened in case the bit is 0 as the result of expansion, and the contents of the register 1 is squared via the multiplier 5. And this result receives a division by the divider 6 and via the contents of the register 3, and the residue thus obtained is stored in the register 1. And in case the bit is 1, the same operation as the bit 0 is carried out. And furthermore the gate 9 is opened to give the multiplication 5 to the contents of the registers 1 and 2 each, and this result is divided 5 by the contents of the register 3 with the residue stored in the register 1. In such way, no repetition is required for the multiplication of the frequency of the power multiplier, thus ensuring an effective operation.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54119793A JPS6034131B2 (en) | 1979-09-18 | 1979-09-18 | Multiplication/division circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54119793A JPS6034131B2 (en) | 1979-09-18 | 1979-09-18 | Multiplication/division circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5642852A true JPS5642852A (en) | 1981-04-21 |
JPS6034131B2 JPS6034131B2 (en) | 1985-08-07 |
Family
ID=14770353
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP54119793A Expired JPS6034131B2 (en) | 1979-09-18 | 1979-09-18 | Multiplication/division circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6034131B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61223876A (en) * | 1985-03-28 | 1986-10-04 | インターナシヨナル・スタンダード・エレクトリツク・コーポレイシヨン | Cryptographer and cumulative methed |
-
1979
- 1979-09-18 JP JP54119793A patent/JPS6034131B2/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61223876A (en) * | 1985-03-28 | 1986-10-04 | インターナシヨナル・スタンダード・エレクトリツク・コーポレイシヨン | Cryptographer and cumulative methed |
Also Published As
Publication number | Publication date |
---|---|
JPS6034131B2 (en) | 1985-08-07 |
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