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2022 TetCTF writeup

2022 TetCTF writeup


share

Name Category Points Solves
share CRYPTO 216 / 1000 29

Description

Yet another secret sharing scheme.

nc 139.162.61.222 13371

Attachments

See attachments.

Solutions

See solutions.


share-v2

Name Category Points Solves
share-v2 CRYPTO 804 / 1000 15

Description

A new feature is added. Check it out!

nc 139.162.61.222 13372

Attachments

See attachments.

Solutions

See solutions.


fault

Name Category Points Solves
fault CRYPTO 831 / 1000 14

Description

You got a decryption oracle! Sounds good? Well, not really…

nc 139.162.61.222 13373

Attachments

See attachments.

Solutions

See solutions.


algebra

Name Category Points Solves
algebra CRYPTO 831 / 1000 14

Description

I threw some arbitrary operator into a finite field and, interestingly, I got a group!

nc 139.162.61.222 13374

Attachments

See attachments.

Solutions

See solutions.


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