ADFVGX was a cipher that was primarily used by the German Army during WWI. It is fractionating substitution cipher, which basically means that all of the letters are replaced by some other character, which is then mashed up. More Crypto 101: XOR – https://www.youtube.com/watch?v=xK_SqWG9w-Y Pigpen – https://www.youtube.com/watch?v=bUlIvx0fgV8 Homophonic Cipher –Continue Reading

Security+ Training Course Index: http://professormesser.link/sy0501 Professor Messer’s Course Notes: http://professormesser.link/501cn Professor Messer’s Practice Exams: http://professormesser.link/501ytpe Frequently Asked Questions: http://professormesser.link/faq – – – – – As a security professional, you’ll manage many different certificate types. In this video, you’ll learn about root certificates, SSL certificates, self-signed certs, and more. – –Continue Reading

Security+ Training Course Index: http://professormesser.link/sy0501 Professor Messer’s Course Notes: http://professormesser.link/501cn Frequently Asked Questions: http://professormesser.link/faq – – – – – We rely on strong encryption protocols to keep our wireless communications secure. In this video, you’ll learn about the security features associated with WPA and WPA2. – – – – –Continue Reading

Security+ Training Course Index: http://professormesser.link/sy0501 Professor Messer’s Course Notes: http://professormesser.link/501cn Professor Messer’s Practice Exams: http://professormesser.link/501ytpe Frequently Asked Questions: http://professormesser.link/faq – – – – – One way to extend the capabilities of a relatively small key size is to implement key stretching. In this video, you’ll learn about the libraries thatContinue Reading

Security+ Training Course Index: http://professormesser.link/sy0501 Professor Messer’s Course Notes: http://professormesser.link/501cn Professor Messer’s Practice Exams: http://professormesser.link/501ytpe Frequently Asked Questions: http://professormesser.link/faq – – – – – There are many methods and implementations of cryptographic hashing. In this video, you’ll learn about some of the most popular hashing algorithms. – – – –Continue Reading

Security+ Training Course Index: http://professormesser.link/sy0501 Professor Messer’s Course Notes: http://professormesser.link/501cn Professor Messer’s Practice Exams: http://professormesser.link/501ytpe Frequently Asked Questions: http://professormesser.link/faq – – – – – Encrypting a block of data can be accomplished using a number of different methods. In this video, you’ll learn about block cipher modes and how theseContinue Reading

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Security+ Training Course Index: http://professormesser.link/sy0501 Professor Messer’s Course Notes: http://professormesser.link/501cn Professor Messer’s Practice Exams: http://professormesser.link/501ytpe Frequently Asked Questions: http://professormesser.link/faq – – – – – It’s common to use encryption methods that best suit the task at hand. In this video, you’ll learn about the differences between stream ciphers and blockContinue Reading

Security+ Training Course Index: http://professormesser.link/sy0501 Professor Messer’s Course Notes: http://professormesser.link/501cn Professor Messer’s Practice Exams: http://professormesser.link/501ytpe Frequently Asked Questions: http://professormesser.link/faq – – – – – Sometimes, the information you need is hidden in plain sight. In this video, you’ll learn how steganography can be used to store and hide information. –Continue Reading

Security+ Training Course Index: http://professormesser.link/sy0501 Professor Messer’s Course Notes: http://professormesser.link/501cn Professor Messer’s Practice Exams: http://professormesser.link/501ytpe Frequently Asked Questions: http://professormesser.link/faq – – – – – Sometimes, the information you need is hidden in plain sight. In this video, you’ll learn how steganography can be used to store and hide information. –Continue Reading