RSA - ctf-deepdive

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CTF Deep Dive

RSA

公開鍵暗号方式

Haskell で復号する例
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import Crypto.Number.ModArithmetic
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​
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crackRSA :: Integer -> Integer -> Integer -> Integer -> Integer
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crackRSA p q e c = expSafe c d n
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  where
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    l = lcm (p-1) (q-1)
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    d = inverseCoprimes e l
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    n = p * q
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