MysteryTwister C3
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Level III Challenges (72)

Page 7 of the challenges in Level III, ordered by date posted (the most recent appear first).

ORYX Stream Cipher — Part 4d

[stamp-14] - 0 users already solved this challenge, 1 is working on it.
 
 
 

The ORYX stream cipher consists of three 32-bit LFSRs X, A, B which are shifted differently depending on some bits in the LFSR X. The key stream is a combination of the highest 8 bits of each of the three LFSRs. It is neither feasible nor necessary to search the whole 96-bit key space, there are more efficient methods!
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Published on: 2013-06-27 11:38
Maximum number of attempts for this challenge: 15

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RSA Factoring Challenge: RSA-617

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This challenge descends from the RSA Laboratories contest to encourage research into the practical difficulty of factoring large integers of different length (between 330 and 2048 bit) and cracking RSA keys used in cryptography. This challenge is about factoring a number with 617 decimal digits.
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Published on: 2012-02-07 12:13
Maximum number of attempts for this challenge: 15

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RSA Factoring Challenge: RSA-2048

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This challenge descends from the RSA Laboratories contest to encourage research into the practical difficulty of factoring large integers of different length (between 330 and 2048 bit) and cracking RSA keys used in cryptography. This challenge is about factoring a number with 617 decimal digits.
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Published on: 2012-02-07 12:13
Maximum number of attempts for this challenge: 15

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RSA Factoring Challenge: RSA-500

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This challenge descends from the RSA Laboratories contest to encourage research into the practical difficulty of factoring large integers of different length (between 330 and 2048 bit) and cracking RSA keys used in cryptography. This challenge is about factoring a number with 500 decimal digits.
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Published on: 2012-02-07 12:11
Maximum number of attempts for this challenge: 15

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RSA Factoring Challenge: RSA-490

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This challenge descends from the RSA Laboratories contest to encourage research into the practical difficulty of factoring large integers of different length (between 330 and 2048 bit) and cracking RSA keys used in cryptography. This challenge is about factoring a number with 490 decimal digits.
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Published on: 2012-02-07 12:10
Maximum number of attempts for this challenge: 15

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