1 - Cryptography Basics

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in this video you'll learn about the basics of cryptography, hashing and different algorithms.
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good course, this is a rare course in youtube

raihanz
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Thanks for this great series. All videos illustrate the basic very well. Help me a lot for my cybersecurity class.

tasapornvisawameteekul
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Really nice video. In HMAC, why do you need to hash both the key and the message? I thought about it and if you just hashed the key, then you can't verify the integrity of the message, and if you just hashed the message, you don't know if the message came from Alice. Is that correct? What if someone had the key in this symmetric algorithm? then they could still send a message hashing both their message and the key and the recipient wouldn't really know who it came from because this hacker had the same key and the recipient wouldn't know what the sender wanted to send originally.

blenderbottle