发明名称 |
Random keystream generation apparatus and method for use in an encryption system |
摘要 |
A random keystream generation apparatus and method for use in an encryption system, generates an m-bit random keystream, using a PS-LFSR with n storage stages for storing n-bit binary data is divided into k sub-storages connected in series, each sub-storage having parallel storage stages (k is a minimum integer larger than the quotient of n divided by m). Each sub-storage stores in the parallel storage stages m-bit parallel binary data received from the previous sub-storage and outputs the m-bit parallel binary data simultaneously in accordance with a system clock signal. A buffer has m storage stages to store m-bit parallel data received from the last sub-storage of the PS-LFSR. M feedback connections receive the outputs of the sub-storages and the buffer corresponding to predetermined primitive polynomials, calculate the primitive polynomials with the received data, and output the calculation results as the bits of the m-bit keystream sequence.
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申请公布号 |
US2003068039(A1) |
申请公布日期 |
2003.04.10 |
申请号 |
US20020114088 |
申请日期 |
2002.04.02 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
LEE HOON-JAE;MOON SANG-JAE;PARK SANG-JUN |
分类号 |
H04L9/22;(IPC1-7):H04L9/00 |
主分类号 |
H04L9/22 |
代理机构 |
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主权项 |
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地址 |
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