Brute Force Attack By Kuspan Almas Overview

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Brute Force Attack By Kuspan Almas Brute Force Attack By Kuspan Almas

Overview  What is Brute Force Attack  Password Length Guesses  Brute Force Attack LimitsOverview What is Brute Force Attack Password Length Guesses Brute Force Attack Limits Unbreakable codes Countermeasures Questions References

What is Brute Force Attack Part of cryptography Attack used against passwords Checks all possible keysWhat is Brute Force Attack Part of cryptography Attack used against passwords Checks all possible keys Depends on the key length

Password Length Guesses 2 characters = 3, 844 guesses because of:  First character: lower casePassword Length Guesses 2 characters = 3, 844 guesses because of: First character: lower case letters (26) + upper case letters (26) + numbers (10) = 62 Second character: same = 62 Total permutations = 62*62 = 3,

Brute Force Attack Limits Brute Force Attack Limits

Unbreakable Codes Protected by their mathematical properties One-time Pad cryptography Protected by the ability to generateUnbreakable Codes Protected by their mathematical properties One-time Pad cryptography Protected by the ability to generate random sequences of key bits Can be defeated if not implemented correctly

Countermeasures Used by the administrators of databases and directories Limiting number of password attempts Restriction onCountermeasures Used by the administrators of databases and directories Limiting number of password attempts Restriction on IP address

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References http : //www. hackosis. com/brute-force-attack/ http : //en. wikipedia. org/wiki/Brute_force_attack References http : //www. hackosis. com/brute-force-attack/ http : //en. wikipedia. org/wiki/Brute_force_attack

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