You're reading from Ethical Hacking Workshop

Product typeBook

Published inOct 2023

PublisherPackt

ISBN-139781804612590

Edition1st Edition

Concepts

Cybersecurity

Authors (2):

Rishalin Pillay

Mohammed Abutheraa

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Encryption algorithms

As you learned in the preceding sections, encryption has been around for many years. You also saw some classic ciphers and their pitfalls. Now, let’s focus on encryption algorithms and look at the difference between symmetric and asymmetric encryption.

Symmetric encryption

When symmetric encryption is used, the same key is used to both encrypt and decrypt data. This means that if two parties are communicating, both parties will hold an identical key that is never exposed. Hence, symmetric encryption is also known as private key encryption.

The following figure shows how symmetric encryption operates, whereby the same key is used to encrypt and decrypt the data:

Figure 3.2 – Symmetric encryption

Symmetric key encryption is used to encrypt copious amounts of data with less resource overhead. It is also faster than asymmetric encryption since it can scale easily and is used a lot in large organizations.

Symmetric...

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Ethical Hacking Workshop

Published in: Oct 2023Publisher: PacktISBN-13: 9781804612590

Authors (2)

Rishalin Pillay

Rishalin Pillay is an Offensive Cybersecurity expert who holds a number of awards and certifications from multiple companies in the Cybersecurity industry. He is well known for his contributions to online learning courses related to Red Teaming and as the author of Learn Penetration Testing. He holds Content Publisher Gold and Platinum awards for his contributions made towards the Cybersecurity Industry, including the Events Speaker Gold award for influential public speaking at Tier-1 business events.
Read more about Rishalin Pillay

Mohammed Abutheraa

Mohammed Abutheraa is Cybersecurity specialist who has over 15 years of experience in IT security, risk management, security infrastructure, and technology implementation in both private and public sector environments. He worked as Incident Response and Remediation Advisor and supported customers remediating against major incidents in the last years. He has experience in Threat Intelligence and Proactive Services like Vulnerability Assessments and Red / Purple Teaming experiences.
Read more about Mohammed Abutheraa

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Encryption algorithms

Symmetric encryption

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