发明名称 |
METHOD FOR DESIGNING SYMMETRIC KEY BLOCK CIPHER ALGORITHM WITHOUT CALCULATION BETWEEN KEY AND PLAINTEXT |
摘要 |
PURPOSE: A method for designing a symmetric key block cipher algorithm without calculation between a key and a plaintext is provided to obtain a high degree of encryption by varying an executing routine of an algorithm according to key values and by not performing a calculation process between a round key and a round block. CONSTITUTION: An input process is performed to receive a secret key corresponding to a size of 8 bitsxr(r is a positive integer) and a plaintext corresponding to a size of a multiple of 8(S10). Round keys of r number are generated by using the secret key according to a predetermined key scheduling algorithm(S12). The plaintext is encoded by performing repeatedly a round calculation process by using a bijective function selected according to the round keys of r number(S14). An output process is performed to output a cipher text generated from an encryption process(S16).
|
申请公布号 |
KR20030000720(A) |
申请公布日期 |
2003.01.06 |
申请号 |
KR20010036798 |
申请日期 |
2001.06.26 |
申请人 |
HUH, GI TECK;JOO, NACK KEUN;PARK, SEUNG BAE |
发明人 |
PARK, SEUNG BAE |
分类号 |
H04L9/06;(IPC1-7):H04L9/06 |
主分类号 |
H04L9/06 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|