Defying Hell
100 points Hard

Alice has been sharing secret encrypted messages with Bob. I would really like to know what those are...

I contacted my good friend Eve, a well-known eavesdropper. She sent me the numbers she found at the beginning of their conversation. By the look of things, this looks like a key exchange. If we would find the key, we would be able to decode every message they encrypted with it!

Help me find both private keys. To submit the flag, decode them correctly and wrap them into CTFlearn{<Alice>_<Bob>} format.

Hint: the title of this challenge is a pun... I can't tell you more ;)

data.txt
Flag
Cryptography ยท Noxtal
302 solves
Rating 4.52
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Discussion

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Delik101

4 weeks ago

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a baby saved me XD

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q3st1on

1 year ago

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Piss easy should be medium AT MOST

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Andrewin

2 years ago

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redlineo

2 years ago

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I have got private keys. But I don't know why they are not a flag. Can somebody help me, please? Write me in discord redlineo#0307

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redlineo

2 years ago

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It's okay. Ascii helped.

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und1sclos3d

2 years ago

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Discrete, but efficient ^^ Had never pt my nose into this one ("specialised" in RSA). Thanks

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tl2cents

3 years ago

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Mike_Root

3 years ago

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Found this extremely difficult at first. Solved after hours researching and mastering new math techniques. Only had to build one small custom tool. Thanks for wicked challenge.

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jack4818

3 years ago

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"decode them correctly" is very vague, and meant I had to guess how to get the flag after solving the maths.

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SANYAM

3 years ago

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