Private Key Encryption (Symmetric Key Encryption)

In private key encryption, data is encrypted using a single same key that only the sender and the receiver know. That is why private key encryption is also called symmetric key encryption because the same key is used during both encryption and decryption of the transmitted data.

In this video, I will also use an example to demonstrate the process of using private key encryption. Two different methods -stream encryption and block encryption- of private key algorithm are also depicted with animation.

Playlist: Basic Cryptography

Advanced Cryptography:

Please leave comments, questions and
please subscribe!

[TheEgoldberger]

I am an (very) old hand in the field of communications. Having graduated in December 1957, when cryptography device was the Enigma created by the Germans. I was having big problems in understanding cryptographic communications; by pure luck, I chanced today on your excellent tutorials. Thanks a lot for the good work!

[patryk]

Sunny, I keep watching these videos in my spare time. A true master teacher has a way of explaining advanced concept in simple terms, you have that ability in spades!

[MunyaMazvimba]

this guy makes it understandable. i have been reading many books trying to understand this but i just understood it within 4 minutes.

[Tom-vgnb]

Sunny: #1 your english is fantastic. While I was learning korean, it was absolutely brutal for me. I still can't pronounce a lot of words. To koreans it sounds like nothing. #2 Thank you very much. I am working on my cryptography cert. I have been going through the text book and it wasn't making sense. Now it makes sense. Thank you for your time and effort..

[saniahmad]

Thank you Prof. Sunny sun, I have learned a lot from your nice class. I easily understand what you are teaching, just like you're giving us a lecture in the same Classroom in my country Nigeria. I wish you all the best!!!

[thingsinthebox]

i couldn't find any better and clearer explanation than yours

[James-kmxq]

Plain language explained so clear, thank you, Sunny! I love your streams so well.

[abhishekagrawal]

Sir, your videos are very easy to understand. Thank you, sir !! keep up the great content

[willardmakinishi]

Thank you so much Professor Sunny. You are truly a sun on a winter morning. Very good explanation

[DonMerri]

Outstanding! Clear & concise explanations. Thank you!

[dmytroshchotkin]

A great start. I'm definitely gonna watch the whole series.

[alexuanvilay]

I love all of your videos. All of them are easy to understand.

[shashisharma]

Your way of explanations is awesome, Blowfish that we generally used in rest API communications.

[manpritrattan]

First people which do not use bob and Alice in example. Bro you are perfect

[marcosalameh]

Sunny, your are so professional!!!, you are amazing!!!!

[ifargantech]

You are an amazing teacher! I am Computer Science Student!

[kbriaz]

You are an amazing teacher, please keep them coming

[brandonsnider]

Very clear explanations with Good examples. Thank you for the videos.

[andreeaichim]

Thank you so much for this video. Now it makes more sense for me. But I have threee questions please. 1. How is this private key shared between sender and receiver? 2. Whose private key are we talking about, the receivers or the senders? 3. How is the private key generated? Through a tool?

I really like these videos. You now have a new subscriber. :)