The Most Secured Crypto-Channel
160 points Hard

Scientists have launched the satellite with the most secured crypto-channel in the world! It is quantum channel (BB84). But hackers had managed to sniff it. You should help those hackers to find out what was in the satellite’€™s transmission. File: https://mega.nz/#!jfpChKTT!TTDfy2l1hGrNwDrM3DQEjX6kmUVDy5DmMatnka5NvXc

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Cryptography · smite
127 solves
Rating 4.71
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Discussion

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Jucci

3 months ago

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Keep a cool head. Read a bit, and this will not be hard to solve.

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Mike_Root

3 years ago

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Don't give up on this one. It's very doable and worth the effort. I wasted a lot of time because I was trying to decode 0,45,90,135 as 1,0,0,1 (per an online chart) when I should have been using 0,0,1,1. You'll see what I mean...

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fuadkhan713

3 years ago

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any hint ? what is the flag format?

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ill_advisor

4 years ago

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Correct me if i'm wrong, but according to the bb84 protocol, transmission2 and transmission3 should be the exchange of bases, so the last transmission file was misleading (otherwise, good challenge)

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ill_advisor

4 years ago

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Correct me if i'm wrong, but according to the bb84 protocol, transmission2 and transmission3 should be the exchange of bases, so the last transmission file was misleading (otherwise, good challenge)

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trongpham1803

4 years ago

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Thank for this challenge, I've learnt sth.

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saphine

4 years ago

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Good one. I have achieved quantum supremacy ?.

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emo94

4 years ago

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emo94

4 years ago

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Noxtal

4 years ago

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Very nice challenge! I want more challenges like this one! ?

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