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Cracking SHA-3 Digests

password-cracking-hashes-basics | Level: Easy  | Total Lab Runs: 0 | Premium Lab

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The Keccak-256 is a 256 bit variant of SHA-3 (Secure Hash Algorithm) hash function family. Keccak was developed by Guido Bertoni, Joan Daemen, Michaël Peeters, and Gilles Van Assche. And, after winning the SHA-3 competition, it was standardized as SHA-3 by NIST in 2015. It is the latest standard and can be used to completely replace older schemes like SHA-2 in SSL, SSH, IPSec etc.

A Keccak-256 hash of a password is provided in digest.txt file. The password is either taken from the dictionary or generated using the password policy. The digest.txt file and the dictionary file "1000000-password-seclists.txt" is present in the user's home directory.

Objective: Recover the password.

If the Dictionary attack fails then use the following password policy:

  • Password length is less than 6 characters i.e. 0 < length < 6
  • Password can only contain characters from this character set:  a-z, 0-9

1. Password

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