From the course: CompTIA CySA+ (CS0-002) Cert Prep: 4 Software and Systems Security
Unlock the full course today
Join today to access over 22,600 courses taught by industry experts or purchase this course individually.
Goals of cryptography
From the course: CompTIA CySA+ (CS0-002) Cert Prep: 4 Software and Systems Security
Goals of cryptography
- [Instructor] Security professionals use cryptography for several different reasons. We describe those reasons using the four goals of cryptography. First, the most common goal of cryptography is to preserve confidentiality. Confidentiality ensures that unauthorized individuals are not able to gain access to sensitive information. If Alice and Bob are communicating with each other using encryption, they want to ensure that their communication remains private. And even if a third party, Mal, intercepts their communication, she is unable to read the contents. The second goal of cryptography is integrity. Integrity protects data against unauthorized modification. If Alice and Bob are communicating with each other, they want to make sure that Mal is not able to tamper with the contents of the message. Bob wants to know that the message he received claiming to be from Alice is actually the message that Alice sent. The…
Contents
-
-
-
-
-
-
-
-
(Locked)
Understanding encryption4m 15s
-
(Locked)
Symmetric and asymmetric cryptography4m 34s
-
(Locked)
Goals of cryptography2m 26s
-
(Locked)
Choosing encryption algorithms2m 41s
-
(Locked)
Key exchange3m 2s
-
(Locked)
Diffie-Hellman5m 16s
-
(Locked)
Trust models3m 7s
-
(Locked)
PKI and digital certificates4m 20s
-
(Locked)
Hash functions7m 30s
-
(Locked)
Digital signatures4m 4s
-
(Locked)
Creating a digital certificate4m 37s
-
(Locked)
Revoking a digital certificate1m 46s
-
(Locked)
-
-
-
-
-
-
-