Vigenere CIpher
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- čas přidán 5. 07. 2015
- In this video, you'll get a comprehensive introduction to the Vigenere Cipher. Whether you're a beginner or looking to refine your skills, this video will help you master the fundamentals. 🌟
If you enjoyed this video and want to dive deeper into the world of programming, decryption, encryption, and C++, then check out our full catalog: bit.ly/3Vr0uRo. Forge your future in tech with Udacity!
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I'm here because I have an exam tomorrow and I'm screwed
update:I passed so this video worked I'd say. (yes this is many years later I just got a notification for this thread okay leave me alone)
Same here:(
ah shit same
I've got 3 days until the exam. I've never studied this many days before the due date. Feels weird.
*Edit: grammar*
Same +++ :)
I’m here cuz I like ciphers and it’s easy for me to learn them🤷♂️
I started watching Gravity Falls season 2 just now, and I have to say THANK YOU very much for demonstrating how the Vigenere cipher works. I'm gonna have a blast decrypting all those end-credit cryptograms.
omg I was just reading journal 3 decodings, ay good luck
i was gonna do the exact same thing! I SWEAR GRAVITY FALLS HAS AWAKENED THE NERD INSIDE OF ME
@@bam5510 HAHAHAHA LETS GOOOO
Gravity Falls is the best!
SEASON TWO? THEY MADE A SEASON TWO? OML OML OML
So I’m a gravity falls nerd and if u don’t know gravity falls has like a million different ciphers and codes and stuff and dude do I have to say this was helpful thank you A TON
@Hi there Bud
I'am a principiant
5 years after the show ended and I'm still a Gravity Falls nerd.
@love.galore.x I have a whole list of the ciphers and the cryptograms, lol. I write my diary in them because my mom's a snoop.
@love.galore.x i bought the book still trying to de-code blendins letter
I am here because of gravity falls it got me in to Chiphers and now I do this for fun
I'm here because of Gravity Falls
Hazy41711 I'm here because Batman Arkham City
Hazy41711 BRUH SO AM I VIRTUAL HIGH FIVE
Haha same
Hazy41711 .....same
Hi there Bud
.... high six*
Very well explained. Simple, clear and concise. Straight to the point. I understood everything!
@Joe King Stop complaining and just listen.
I just decrypted your comment and I'll not surprised grinder is your favorite app.
I am mentally handicapped (tarded) and i understood this first try. This is making me happy!
Im here because im gonna design an internet clue hunt because corona has me bored af :)
Breakout Philippines? :D
Send us a link when u finish it
could you send me a link to it?
yo tyler send link, i look at chocolate melting just to get out of boredom.
Me 2 bro
Thank you!This video is really helpful and I learned how to use Vigenere cipher in just 2 minutes thanks to this video :)
Thanks a lot....I have been looking for this table...but thank god..i finally found it here. thanks a lot mate.
Beautiful explanation. Thanks.
I learned to do the vigenere cipher with counting out how many spaces to go to rather than this. So watching this after that was so confusing but I get it now. This just saves you time from counting spaces
Finally a perfect explanation, I couldn't understand it from my assignment!
Almost perfect, he made one small mistake. Listen closely at 45 seconds in and you'll hear it.
Thank you very much for the detailed explanation! Example in my book is impossible to understand
Kronen 1ST what book is it? And one question real quick, what’s the key stream. I still don’t get it
Annie Nguyen
Ur key stream is the number assigned to ur key. So it’s lemon right so you use that everytime. there’s a better tutorial on the vigenere cipher than this that explains it better lemme edit this with the link. It’s just overall better to understand and it’s the same thing just with numbers. This saves you from having to count like in this video : czcams.com/video/E352JJ8xv48/video.html
This make it a bit simpler
I'm very thankful for your short, simple and easy to follow video on Vigenere Cipher :)
I'm here because I read the following book:" Codes, Ciphers, And Secret Writing" by Martin Gardner. I wanted to find out how this video presentation compared to how it was presented in that book.
Incidentally, since the grid can be used with more than one method, I think that the word "system" is a better description than the word "cipher" for the Vigenere grid.
ياوطن افخر دام وسطك شراري🔥
You're video is very helpful! Thanks!
Clear and quick explanation. Thanks for this.
wait is it always lemon or any other words?
44444444444
This was simply understandable 😊 thanks
Thank you so much. Was very easy to comprehend compared to my textbook.
Very well explained in a simple way. Thank you!
If the plain text is have a space between word, it is still can we encrypt or we need to combine each word?
So in the plaintext no matter what it will always be the first three letters or am I missing how you choose the first three letters
Thank you so much for this explanation!
I’m here from James’ video.
Haha I remember james
how to convert if we dont have that table ?
THANKS FOR THIS GREAT VIDEO!!!!💖💖💖
Here because of supergirl season 5 episode 3. Thought I might like to start wrtg things down using this, live the explanation!
Very good! thanks!
but i have a question: if i wanted to add more characters to the table (for example, numbers 0 to 9) how would i do that? would i just add them to the end of each row and column and then shift the letters again?
thanks again
Yes, you can do that. I've made my own with numbers and basic punctuation. Done correctly you've got a very workable cipher and the equivalent security of a one time pad - the Holy Grail of encryption.
just add number end of first and second col and row and fill blanks. i mean you have to cleam half of this board bcoz it comes 0-9 where has a-k
mean N line would be NOPQRSTUVWXYZ0123456789ABCDEFGHIJKLM.
and all those grid can be even mixed it still would work
or make bigger circle and smaller circle write your alphas and number equal on edges.
that is same thing and less work.turn smaller ring K(stream letter) under A and do your encrypt and decrypt so on.
or make 2 strip of paper
ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789
ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789
yes one is double size so its easier when you slide key under A you can encrypt and decode.
works still exact same way
Great simple explanation.
Thank you! Your video helps me understand vigenere cipher 😆😆
It seems like everyone is here from Gravity Falls when I’m here from Winterhouse-
Very nice explanation!
Thank you lot for your information 🤝💐
So the first letters of the plaintext will be the column letter the key will be what y column and the cypher text is is the letter on x column and y column together
randomly recommended by youtube. thanks
How do I get a key? Do I have to create it or?
I'm influenced by the powerful impact of this material. A book with related themes charted a new direction in my life. "The Art of Meaningful Relationships in the 21st Century" by Leo Flint
I love this voice so much.
I don’t understand if your trying to decrypt the ciphertext and you don’t know what the key is how do you figure out the key?
cryptanalysis. the key being periodic makes it quite easy to break
Anorepio- -SAI you have to guess
@@VitroVine Only if the key is shorter than the message itself and based on yet random information. But otherwise you're correct. Modern computers will crack this cipher in microseconds.
where did the key come from
Here because I started binging Blindspot. This stuff's interesting ngl
thank you!
WHAT AN ABSOLUTE CLUTCH DEMON FOR CS
awesome video thanks so much
That's good to know!
Who is here beacause of the kryptos but knows they will fail :0
very nicely explained
Is this to decipher or encrypt the plaintext
encrytp
thanks
Very nice explained
How could you do it if you're given a Cipher Text not Plain Text?
From the key I think
The Plain Text is the message encrypted in the Vignere Cipher. You are given the Cipher text but not the key, only the recipient is meant to know how to solve it. Never reveal the key in the code.
Very helpful thanks
Love it ima teach it to my bestie so we can send codes👌
how to decode again?? idk that
What exactly is that keystream?
FFS, it’s the word ‘lemon’ repeated…at least to the length of the message sent…
Key- To
Cipher text- OQ
I'm here because I have to code this
I tried to understand this by reading but no avail :'''D thanks for the video, I understand now
How do you solve it
The real question is... which letter in the graph is incorrect?
anyone know what thee time complexity or space complexity will be for this
sarvesh more 26x26 box grid or just use graph paper or you can draw lines to make a 26x26 grid
O(1) the grid is an understanding tool only. convert chars to base 26 then sum them together, modding the result by 26. achieves the same result.
Where is the second method
I've been screwing my head for word encryption but tnx man
An hour of class got in 2 minutes
I got it
Thanks
Increase security by using key word that has non repeating letters that is the same length as plaintext.
decryption?
Key?
Thanks for explaining this :) i thought it was really hard but i was wrong. Btw, how do we find the key?
You don’t, you make up your own key, I’m guessing but idk
My own key is “Eff Joe Biden”
@@mdd1963 brilliant! what if i named my key "i am a racist"- /j
Here because of the CZcams channel called Deeper.
اللي يدرس امن سبراني بالجوف لايك
Imma use this to decode kaalaman's message
very cool
I’m here because of “The Smiles Household” in Roblox
Thaat's soo cool
How to get the key is it already provided
Without key, how could you possibly encrypt, much less think about decrypting? ( unless your key was simply, ‘AAAAAAAAAAAAAAAA’!)
Still dont get it
this makes sense
thx for the vid im here from smpearth arg :P
wait is it always lemon or any other words?
YeH me
But why did you explain it the other way around
Key:widdle ciphertext:NLMXQWWN IIZ LZFNF
GOOD VIDEO :)
I am here from SoloLearn
me too lol
what is your username? i want to follow you
Ciphert text would be like so:
LXFOP VEFRNH(Z) Last letter is Z not R as on the video
Please confirm if Im not mistaken
I'm here from the time travel etiquette
الي كان دكتوره الكويكبي ودز له المقطع ذا لانه عجز يفهم التشفير لايك
I am here because of Gravity Falls
Interesting
nice
Here because of Bill Cipher!
I'm here beacuse of Project LOKI
Hera Esuedria owemjiii filipina!❤️❤️💜💜💜💜
I’m here because of the book Bitterblue
Wack
I'm here from cicada 3301 puzzle
Seems like an A will always encrypt to the first letter of the key
I'm here because I have a fucking project due tomorrow which is about History of Communication and I didn't have time to do it!
CISSP preparation brought me here.
I'm here because I want to learn it
same haha
I'm here because I am doing a project about Enigma