CCF IVC 2025“汽车安全攻防赛” -- Crypto -- WriteUp
CCF IVC 2025“汽车安全攻防赛” -- Crypto -- WriteUp
Curve
task
analysis
[*]过程分析:
\[设定曲线x^2-841y^2=1mod\ p;选取随机数n\_a,n\_b,计算A=P * n\_a,B = P * n\_b\\output = G,A,B;key = (A * n\_b).x\]
[*]根据其曲线加 ...
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2025-8-2 22:16
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