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You're reading from  CompTIA Security+: SY0-601 Certification Guide - Second Edition

Product typeBook
Published inDec 2020
PublisherPackt
ISBN-139781800564244
Edition2nd Edition
Tools
Kali Linux
Concepts
Cybersecurity
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Author (1)
Ian Neil
Ian Neil
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Ian Neil

Ian Neil is one of the world's top trainers of Security+. He is able to break down information into manageable chunks so that people with no background knowledge can gain the skills required to become certified. He has recently worked for the US Army in Europe and designed a Security+ course that catered to people from all backgrounds (not just IT professionals), with an extremely successful pass rate. He is an MCT, MCSE, A+, Network+, Security+, CASP, and RESILIA practitioner that has worked with high-end training providers over the past 23 years and was one of the first technical trainers to train Microsoft internal staff when they opened their Bucharest Office in 2006.
Read more about Ian Neil

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Key Stretching Algorithms

Key stretching is where you append a random set of characters to a password to increase the size of the password and its hash, ensuring that a brute-force attack needs more compute time to crack the password.

  • BCRYPT: BCRYPT is a password-hashing algorithm based on the Blowfish cipher. It is used to salt the passwords. A random string is appended to the password to increase the password length to help increase the compute time for a brute-force attack.
  • PBKDF2: PBKDF2 stores passwords with a random salt and with the password hash using HMAC. It then iterates, which forces the regeneration of every password and prevents any rainbow table attack. A rainbow table is a list of passwords and their corresponding hash.

    Tip

    Symmetric encryption is used to encrypt large amounts of data as they have small, fast keys and use block ciphers.

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CompTIA Security+: SY0-601 Certification Guide - Second Edition
Published in: Dec 2020Publisher: PacktISBN-13: 9781800564244
© 2020 Packt Publishing Limited All Rights Reserved

Author (1)

author image
Ian Neil

Ian Neil is one of the world's top trainers of Security+. He is able to break down information into manageable chunks so that people with no background knowledge can gain the skills required to become certified. He has recently worked for the US Army in Europe and designed a Security+ course that catered to people from all backgrounds (not just IT professionals), with an extremely successful pass rate. He is an MCT, MCSE, A+, Network+, Security+, CASP, and RESILIA practitioner that has worked with high-end training providers over the past 23 years and was one of the first technical trainers to train Microsoft internal staff when they opened their Bucharest Office in 2006.
Read more about Ian Neil

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