Are there weak keys in des

Create a free Team What is Teams? Learn more. Ask Question. Asked 7 years, 11 months ago. Active 5 years ago. Viewed 25k times. Improve this question.

Bush Bush 1, 2 2 gold badges 15 15 silver badges 25 25 bronze badges. Add a comment. Active Oldest Votes. Improve this answer. Community Bot 1. Ilmari Karonen Ilmari Karonen 43k 3 3 gold badges 96 96 silver badges bronze badges. However, it doesn't prove that these are the only weak keys, does it? It proves well that these four keys are weak, but I don't see why they should be the only weak keys. Thank you! Also, remember that every 8th bit is not used in DES key schedule. There are four weak keys of this type.

There are six pairs of this type of keys. There are 48 keys of this type. I know I am missing something. Could you tell me where I am going wrong with this? Sign up or log in Sign up using Google. Roy Vidal. Titto Thomas. Amarjeet Kumar. Fabio Capasso. Minh Tran. Sayandeep Saha. Y Vara Prasad. Ashish D Patel. Safaa Saadi. Oyee Hoyee. Professor Xavier. Popular in Mathematics. Fikri Azim. Syed Faisal Bukhari. Muhammad Aamir. Mohammed Yehia.

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Carmen Aguilar. Quick navigation Home. Here is the detailed explanation. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. Weak Keys! Ask Question. Asked 10 years, 8 months ago. Active 10 years, 8 months ago.

Viewed 2k times. Nocturnal Nocturnal 6 6 silver badges 24 24 bronze badges. You are aware that DES is considered broken for ages now and shouldn't be used at all anymore? DarkDust - You're correct, but it is actually a very good question for a learner. A great crypto algorithm is worthless if the users use keys that are weak.

DES is a wonderful example of this among others pitfall.