From the course: Certified Information Systems Auditor (CISA) Cert Prep
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Asymmetric cryptography
From the course: Certified Information Systems Auditor (CISA) Cert Prep
Asymmetric cryptography
- [Instructor] After talking about symmetric cryptography, the next logical step is to talk about asymmetric cryptography. So if we look at those words, symmetric meaning same, the same key is used to encrypt as to decrypt. But now we're on asymmetric cryptography. So now we're talking about not the same. So we have to talk about the heart and soul of asymmetric cryptography. And that's the relationship between the key. So first of all, every user in an asymmetric environment's going to get two keys, public key, and a private key. Now that right there solves the scalability problem because every user's going to have two keys, no matter how many other people are in that environment. So that's a benefit, and that solves one of the problems that symmetric cryptography left us with. Now the thing about these keys, a public key and a private key. These two are mathematically related in such a way that anything encrypted with one key can only be decrypted by the other. So anything encrypted…
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Contents
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Introduction and privacy principles5m 40s
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Physical and environmental controls3m 1s
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Identity and access management5m 21s
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SOCs and SLAs2m 48s
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Networking basics11m 34s
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The OSI and TCP reference models7m 9s
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OSI Layers 1 and 215m 11s
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OSI Layers 3–7 and TCP model15m 54s
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Network devices10m 36s
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NAT and PAT5m 38s
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Firewalls10m 38s
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Additional security devices, part 110m 23s
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Additional security devices, part 26m 4s
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Cryptography basics2m 23s
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Symmetric cryptography9m 1s
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Asymmetric cryptography18m 13s
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Hybrid cryptography5m 21s
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Integrity4m 45s
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PKI and wrap-up6m 4s
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Wireless security5m 6s
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Indicators of attacks, part 114m 9s
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Indicators of attacks, part 213m 13s
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Indicators for application attacks7m 15s
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Cross-site attacks9m 3s
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Timing attacks6m 6s
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Memory issues2m 20s
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Network-based attacks18m 49s
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Threat actors and vectors8m 17s
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