Crypto CTF 2020


CTF Archive

Welcome to Crypto CTF 2020

Crypto CTF is an online competition for hackers to test, evaluate, and expand their cryptography exploiting skills. In this CTF we will provides various crypto challenges regarding modern cryptography techniques. All crypto lovers are most welcome CryptoCTF is a revenge for everlasting complaints by CTF participants about crypto challenges in CTF contests. In this brand new tournament we are trying to provide the crypto lovers with fun and challenging pure crypto tasks to squeeze their heart and test their passion for cryptography. Each task will be based on a particular cryptographic primitive or it will include a direct application of cryptography in other fields. The organizers of this tournaments generously offer their skills knowledge to design original Crypto tasks and challenges for similar contests.

Long Live Crypto!

Original Date: Fri, 14 Aug. 2020, 15:00 UTC — Sat, 15 Aug. 2020, 15:00 UTC
Original URL: https://cr.yp.toc.tf/
CTFtime Entry: Crypto CTF 2020
Original Team: Crypto CTF 2020


Challenges

The text that includes the flag is transmitted while unfortunately both of its head and tail bits are lost ?

Use flagCheck to input the flag you get from the challenge to get the actual flag

Author: CryptoCTF Team

Is it normal to have such encoding?

Note: This challenge does not let you run the python file but you can solve it using the output.txt file.

Use flagCheck to input the flag you get from the challenge to get the actual flag

Author: CryptoCTF Team

There were three ravens sat on a tree, Downe a downe, hay downe, a downe, They were as black as they might be.

Author: CryptoCTF Team

A profile, a look, a voice, can capture a heart ♥ in no time at all.

Note: This challenge does not let you run the python file but you can solve it using the flag.enc file.

Use flagCheck to input the flag you get from the challenge to get the actual flag

Author: CryptoCTF Team

I Already Know I'm Going to Hell

At This Point, It's Really Go Big Or Go Home!

Note: This challenge does not let you run the python file but you can solve it using the output.txt file.

Use flagCheck to input the flag you get from the challenge to get the actual flag

Author: CryptoCTF Team

I think we should all learn elliptic curves and fatima is a good start, enjoy!

Author: CryptoCTF Team


30-Day Scoreboard:

This scoreboard reflects solves for challenges in this module after the module launched in this dojo.

7-Day | 30-Day | All-Time

Rank Hacker Badges Score