发明名称 |
METHOD FOR CONDUCTING DATA ENCRYPTION AND DECRYPTION USING SYMMETRIC CRYPTOGRAPHY ALGORITHM AND TABLE LOOK-UP DEVICE |
摘要 |
Disclosed are a method for conducting data encryption and decryption using a symmetric cryptography algorithm and a table look-up device. The method comprises: when it is determined that it is required to use S-boxes to look up a table in a symmetric cryptography algorithm, determining all types of S-boxes to be used; for each type of S-box, determining the total number N i of the type of S-box, and when N i is larger than 1, determining that the type of S-box meets a multiplexing condition; and when data encryption and decryption are conducted using the symmetric cryptography algorithm, multiplexing at least one type of S-box which meets the multiplexing condition. The present application can reduce the occupation by the symmetric cryptography algorithm of hardware resources under the condition of comparative shortage of hardware resources. |
申请公布号 |
EP2863577(A1) |
申请公布日期 |
2015.04.22 |
申请号 |
EP20130807455 |
申请日期 |
2013.06.09 |
申请人 |
CHINA IWNCOMM CO., LTD. |
发明人 |
LI, ZHIYONG;CAO, JUN;YAN, XIANG |
分类号 |
H04L9/06;G06F17/50;G09C1/00 |
主分类号 |
H04L9/06 |
代理机构 |
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