Join the Crypto Challenge Contest – Watch Video 2 and Test Your Skills! 🔐
Discover the second installment of our Crypto Challenge Contest! Dive into cryptology, cryptography, and cryptanalysis. Check out the rules and see if you can crack the code!

Cryptography for Everybody
482 views • Aug 21, 2020

About this video
#cryptology, #cryptography, #cryptanalysis
This is the second video of our first "Crypto Challenge Contest". For detailed descriptions of the rules, please watch the video :-)
Rules (short version):
- You may break ciphertexts and win points. The one with the most points at the end of the contest wins a copy of Gaines’ book “Cryptanalysis: a study of ciphers and their solution”. Another winner will be randomly chosen from all other participants
- The contest is in no way connected to or sponsored by YouTube, Google, or Facebook
- Everyone (who is no CrypTool team member) is allowed to participate – you don’t need to be a subscriber of our channel or our Facebook page. Participation is for free
- At the end of the contest, we will delete all personal data (e.g. names and email addresses)
- The official start of the contest is the 14th August 2020
- Solutions may be sent until the release of the next contest video- The basic idea of the contest: having fun with solving crypto challenges :-)
Hint: Clearly, everyone is only allowed to participate ONCE in the contest. Thus, if you send solutions for a video multiple times, e.g. from different email addresses, you are removed from the contest.
If you are interested in learning the basics of cryptology, you should also have a look at our video series about basics of cryptology – also for beginners: https://youtu.be/jbumW7Ym03o
You may download the latest version of CrypTool 2 from here: https://www.cryptool.org/en/ct2/downloads
Transcriptions:
Ciphertext 11:
AVDGAAFAFAADADAAADAADDADDGFAAAFDAFAAADDGFADFVDFADXVFG
FFFVAGXFFVVVXAGGGVXDXFFXVXXDGGGVXDFAADFDADFFDAFADAAAF
FAFGFFDAFAFDAAADAGFFDAGDAVXGVVFDDFDVDDAXVXXVGDXVFXXXV
FDVDGGDXVFXXDAAFAAAFFDADAGAGAFGFAAAVADAGDDADADDDFAAD
AGDXVDXGGXDXVXXGXGDXDDVVDGFVXDGVAXXGVXFFFVXDG
Ciphertext 12:
SIKUQFVIDFSBKOKCTMUMQFVIDFSTRQBQDPWBKCDQTUPOKUQFVIDFSB
KOKCTGQCLBPSFQTXNWPBUSHDCPBSZOYOPOUDHNOHRQABOCVBTUK
CGKSTQOOYBUFQIOMWBLTQCRYOUQYOPODHNKBUYSKCXHKCPBVBTHL
XCPUDECXDFCQMCUXGABUTYTPCCLCOBLAEFLUDUMQFVIDFSW
Like what I do 😄? Help fuel my crypto obsession 🎓 — buy me a coffee here☕— thx: https://buymeacoffee.com/cryptographyforeverybody
This is the second video of our first "Crypto Challenge Contest". For detailed descriptions of the rules, please watch the video :-)
Rules (short version):
- You may break ciphertexts and win points. The one with the most points at the end of the contest wins a copy of Gaines’ book “Cryptanalysis: a study of ciphers and their solution”. Another winner will be randomly chosen from all other participants
- The contest is in no way connected to or sponsored by YouTube, Google, or Facebook
- Everyone (who is no CrypTool team member) is allowed to participate – you don’t need to be a subscriber of our channel or our Facebook page. Participation is for free
- At the end of the contest, we will delete all personal data (e.g. names and email addresses)
- The official start of the contest is the 14th August 2020
- Solutions may be sent until the release of the next contest video- The basic idea of the contest: having fun with solving crypto challenges :-)
Hint: Clearly, everyone is only allowed to participate ONCE in the contest. Thus, if you send solutions for a video multiple times, e.g. from different email addresses, you are removed from the contest.
If you are interested in learning the basics of cryptology, you should also have a look at our video series about basics of cryptology – also for beginners: https://youtu.be/jbumW7Ym03o
You may download the latest version of CrypTool 2 from here: https://www.cryptool.org/en/ct2/downloads
Transcriptions:
Ciphertext 11:
AVDGAAFAFAADADAAADAADDADDGFAAAFDAFAAADDGFADFVDFADXVFG
FFFVAGXFFVVVXAGGGVXDXFFXVXXDGGGVXDFAADFDADFFDAFADAAAF
FAFGFFDAFAFDAAADAGFFDAGDAVXGVVFDDFDVDDAXVXXVGDXVFXXXV
FDVDGGDXVFXXDAAFAAAFFDADAGAGAFGFAAAVADAGDDADADDDFAAD
AGDXVDXGGXDXVXXGXGDXDDVVDGFVXDGVAXXGVXFFFVXDG
Ciphertext 12:
SIKUQFVIDFSBKOKCTMUMQFVIDFSTRQBQDPWBKCDQTUPOKUQFVIDFSB
KOKCTGQCLBPSFQTXNWPBUSHDCPBSZOYOPOUDHNOHRQABOCVBTUK
CGKSTQOOYBUFQIOMWBLTQCRYOUQYOPODHNKBUYSKCXHKCPBVBTHL
XCPUDECXDFCQMCUXGABUTYTPCCLCOBLAEFLUDUMQFVIDFSW
Like what I do 😄? Help fuel my crypto obsession 🎓 — buy me a coffee here☕— thx: https://buymeacoffee.com/cryptographyforeverybody
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Video Information
Views
482
Likes
16
Duration
17:52
Published
Aug 21, 2020
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