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Login - Fword CTF 2021

Vishvesh
2021-08-31
Crypto

tl;dr

  • use hash extension to bypass password check on login.
  • use RSA properties to recover $q$ and get $p$ and therefore $N= p*q$.
  • sign the message given, and get the flag.
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FwordCTF Hash-extension RSA-Signature

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