Ron, Adi and Leonard4 min read

Ron, Adi and Leonard is a funny crypto challenge, based on RSA, in particular in this challenge the exponent e is very big, then the ciphertext is vulnerable to Wiener’s attack.

Wiener’s attack, is an attack that use the continued fraction method to expose the private key d when d is small. For more information visit the wikipedia webpage https://en.wikipedia.org/wiki/Wiener%27s_attack.

For this challenge we have found a script in this git repository: https://github.com/MxRy/rsa-attacks/blob/master/wiener-attack.py, modify for our purpose and run it:

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2018-08-17T21:20:40+00:00

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