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Update 2024秋期末考试答案.md

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信息安全数学基础（二）/24FallFinalExam/2024秋期末考试答案.md
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@ -30,7 +30,7 @@
解： 解：
$R=Z/6Z \cong Z_6$，我们只要考虑 $Z_6$ 上的性质： $R=Z/6Z \cong Z_6$，我们只要考虑 $Z_6$ 上的性质：
显然有 $2*3 \equiv 0 \pmod{6}, 4*3 \equiv 0 \pmod{6}$，所以零因子是2，3，4 显然有 $2\*3 \equiv 0 \pmod{6}, 4*3 \equiv 0 \pmod{6}$，所以零因子是2，3，4
**3.定义在有限域 $F_{17}$ 上的椭圆曲线 $E: x^3 + 2x + 3 = y^2$ 上有点 $P(2, 7), Q(11, 8)$ , 计算 $P+Q$ , $2P$** **3.定义在有限域 $F_{17}$ 上的椭圆曲线 $E: x^3 + 2x + 3 = y^2$ 上有点 $P(2, 7), Q(11, 8)$ , 计算 $P+Q$ , $2P$**