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    • 10. 发明授权
    • Custom static Diffie-Hellman groups
    • 自定义静态Diffie-Hellman组
    • US08588409B2
    • 2013-11-19
    • US11272150
    • 2005-11-14
    • Daniel R. L. BrownRobert P. GallantScott A. Vanstone
    • Daniel R. L. BrownRobert P. GallantScott A. Vanstone
    • G06F21/00
    • G06F7/72G06F7/724G06F7/725G06F2207/7204H04L9/002H04L9/0841H04L9/3066H04L2209/26
    • Methods for choosing groups for a static Diffie-Hellman key agreement protocol to inhibit active attacks by an adversary are provided. In mod p groups, an even h is chosen of value approximately ( 9/16)(log2n)2, values r and n are determined using sieving and primality testing on r and n, and a value t is found to compute p=tn+1 wherein p is prime. In elliptic curve groups defined over a binary filed, a random curve is chosen, the number of points on the curve is counted and this number is checked for value of 2n wherein n is prime and n−1 meets preferred criteria. In elliptic curve groups defined over a prime field of order q, a value n=hr+1 is computed, wherein n is prime and n−1 meets preferred criteria, and a complex multiplication method is applied on n to produce a value q and an elliptic curve E defined over q and having an order n.
    • 提供了用于选择静态Diffie-Hellman密钥协商协议以抑制对手的主动攻击的组的方法。 在mod p组中,偶数h被选择为大约(9/16)(log2n)2的值,使用r和n上的筛选和原色度测试来确定值r和n,并且发现值t计算p = tn +1,其中p是素数。 在二进制字段中定义的椭圆曲线组中,选择随机曲线,对曲线上的点数进行计数,并检查2n的值,其中n是素数,n-1符合优选标准。 在序列q的质场上定义的椭圆曲线组中,计算值n = hr + 1,其中n是素数,n-1满足优选标准,并且在n上应用复数乘法以产生值q和 在q上定义并具有n阶的椭圆曲线E.