Hehe nice... It's good to learn ciphers to kids when they're young... They take it as a game and when they get older, they'll have an awesome decrypting mind! :)
You're right... It's the OTP encryption. There was also the one-time tape Vernam cipher on the 5-UCO. Now I think it's more the TSEC/KG-84(A/C) and the KG-245A and KG-250.
ch5412 So you say the encoded message at the end is SMOFZQA JDFV? It could be coincidental but if you believe it to translate to WELCOME BACK, then the alphabet key is normal with a passcode of WIDDLE. Try it with my table, and you'll see it's working!
Playfair cipher encrypts pairs of letters (digraphs), instead of single letters as the more complex Vigenère cipher system use. Playfair is harder to break since the frequency analysis used for simple substitution ciphers does not work with it. Frequency analysis can still be undertaken, but on the 600 possible digraphs rather than the 26 possible monographs. The frequency analysis of digraphs is possible, but considerably more difficult generally requires a larger ciphertext to be useful.
Our class was given a project about ciphers... Everyone chose the easy ones while my team chose the Vigenère cipher... It looked hard but I had the hope that it was actually easy... And guess what! You prove it that it was easy... Just complicated at some levels.. but thanks! You gave my day
Actually, KG-250 and KG-255 is used at the HAIPE (High Assurance Internet Protocol Encryptor) of the NSA. A HAIPE is typically a secure gateway that allows two enclaves to exchange data over an untrusted or lower-classification network. This is perfect for nowadays... as for Simon Singh, didn't he worked at the CERN complex in Geneva, Switzerland? His books looks interesting but pretty deep. I'll try to give a try at "the code book" ! Thank you for the heads-up... :P
I was trying to look this up online and everything I read made it sound way too complicated. I was going to give up, but then I found your video. You made it extremely easy to understand. Thank you :D
Hmmmmm okaaaaay? This is actually a video of how to encode and how to decode the Vigenère Cipher. Please, refer yourself to the 1:24 mark up to 2:17. This is exactly how you encode it. To help you out, use the table, which is available in a link in the description.
Yes, it was called the "le chiffre indéchiffrable". Babbage employed a mix of cryptographic genius, intuition and sheer cunning to break the Vigenère Cipher. Amazingly, his work was never published in his lifetime. It was over a hundred years later, in the 1970's, that his technique was finally made public. :) Still today, it's one of the best cipher used around. If the keyword of the cipher is short, it's easy to crack but if it's long like a phrase (10 words and +), you'll almost never get it!
I'm not a teacher... If I was a teacher, this would be a great idea :) I am relatively new to programming, so when I see videos like this, I try to recreate them via programming; it gives me something to work on and possibly learn something new in the process.
Maybe it is and want you to say it was an error... To help you out, go on google and write: "Wikihow vigenere cipher" Take the first link saying 3 Ways to Encode and Decode using Vigenere Cipher. To go faster, if you look the links in my description, you'll have everything you need too.
Exactly... Back in the cold war era, it was about hitech as today is the PRISM program of the NSA. That was fun talking to you and learning more about cryptology and its history. Thank you!
Exactly! The force of the encryption always depends in two things. Not leaving spaces between words that you encrypt and always use a really long keyword (passkey). A minimum of 25-45 caracters will put the code breaker to a good test and hard work. It could take him a few hours/days to break. Also if you use a keyword with something as long as 128 caracters or 256, 512 or even 1024 caracters, you just made a passkey as hard as the encrypted connection you're using to access online to your bank account. A lot of hard coders (and myself), are mostly using parts of a specific documents as a passkey for our message with a book you can find anywhere, even in hotels around the world... What is it? The Holy Bible... Take this phrase for exemple, from Eph 4:29 in the Holy Bible: "Let no corrupt communication proceed out of your mouth, but that which is good to the use of edifying, that it may minister grace unto the hearers." We could transfer it into a really strong 118 caracters keyword/passkey without any spaces and special caracters, giving this: "Letnocorruptcommunicationproceedoutofyourmouthbutthatwhichisgoodtotheuseofedifyingthatitmayministergraceuntothehearers" . The lenght of this enforced keyword renders decryption almost impossible from professional cryptographers... The time required to break the code will be too much for the "quality" of the information that this message could provide. Hope you understand more cryptography... I know there's a video on RUclips and a cracking tool made by Brian Veitch. If you look carefuly at his video you'll see that the encrypted words in his video, have a space between them and that the keyword is only 9 caracters long. Helping a lot the decyphering of the message in a few minutes...
First of all thank you very much for this video...But I have a question.What if the key is a number?For example keyword:123 and the message the same with you .Which will be the encryption?
The best cipher would be a list of completely randomly generated numbers between 0 and 26, with as many numbers as letters in the message you want to send. Then you increase or decrease each letter by it's corresponding number. You would both need these numbers stored. Let's say you have a list of 100 numbers. In that case the message you send can't be longer than 100 letters, because if the key loops, it is possible to crack it. That is the perfect encryption method, since it is random, the key doesn't loop, and any letter can become any other letter, randomly
Why not taking the Pi (Pythagore) string number... The numbers of Pi can go up to 50 millions digits... If you got a 50 caracters message, it could be encoded with this number: "3.1415926535897932384626433832795028841971693993751". More digits are available here: www.angio.net/pi/piquery
Can you decode this? LFZnY29nsjDrzhHwPINsEwjrKCklTBNZz28fGEBjq2BlaIrwyTYvZa0NZh9xrMElUFUeuO50GZSjIC5tvnFoF3EkpRSrRNUiqeNft2G0DEGvd250wxTaVYSjZ2UtaX9kGBOjiWDnwsXryNGsUMEdhCE0un8deSqwpDSrns4QZb9ge3PyNMMxrICxJBdvPSDfOAZuyVQaAT50BOGjHDPqx6ahPYZrqmZcJCOyuBDqMH50e3SbIRXwmDQdciReZRVtQN9xisHsgL51fE9aEg0GTs9gneLzKDPmZFPdpmC= I really need it
This text looks like it is encoded in AES encryption my friend... Forget it, you'll gotta need the key or maybe the Heartbleed bug could help you out...
The beauty of symetrical crypto is that you can change the word as long as you want. Even take phrases, without spaces. You can take something as long as your text, but it would be hard to apply for long messages. You could take for example, this 56 characters password: "thisismysecretpasswordthatnobodyknowsexceptmeandmyfriend". Then you could apply it to any phrases you want to code and it would be extremely difficult to break. 👍
Does this chart work on all problems that use Vigenere's Cipher?? Because I have this homework problem and its not working... I even double checked... the computer still says its wrong... It was: HELPME and keyword was YARN= I got FECCJE the other one was encrypted: WIRRC the keyword was DOWN= I got TUVEZ Am I doing something wrong??
so I was taking cryptography classes at coursera and in it the instructor "dan boneh" does "C + w =z" but in your videos you do "c + w = y" I,m really confused ? and btw the music is beautiful,can you give me the name of the music as well ? thank you !
Hi Raj! I think Dan Boneh made an error in his cryptography video for the Vigenere Square. C+W always equal Y. If you want to be sure, just check this Online Tool, you'll see: www.sindark.com/NonBlog/CR/CR.html
You write your keyword's numbers as letters. "onetwothree". You never put numbers in Vigenere Cipher and remember, your keyword must always be as long as you can! The shorter it is, the easiest it is to crack! ;)
TheGothGal2323 Negative, the answer is: WOWIMGOODATDECRYPTINGCODES Try again for the first letter to find "W"... You'll then understand how the rest of the decrypting works ! :)
Obviously, both person should know the keyword to cipher and decipher their messages. One of the easiest and fast way I was doing back in college was that we used our own names as the keyword. It's not the safest way to encrypt it, but it was getting waaay over our teacher's knowledge. Take for example that me (Brian R) and the other person i'm talking to, my friend called John Doe. So when John Doe writes me a message for example we'll take: "Meet me at your riser" becomes "meetmeatyourriser" without any spaces. Then John encode his message using his whole name as his keyword (johndoe). So the crypted message will be: "vslgpsecmvhufmbsy". When I will receive his encrypted message, I always know we use our full names for encrypting our messages. So I already know that the message he sent me was encrypted using his name as a keyword (johndoe). Then I decrypt the message, it gives me: "meetmeatyourriser". Then, to write back to him, i'll use MY wholename as keyword (BrianR) and when he'll receive it, he'll know how to decrypt it.
Thank you so much. But the only thing I don't get is the keyword stuff. Like, how would you find the keyword to solve it? Mind explaining if you can? Thanks any ways :D
The keyword is like a passphrase between you and the person you want to send the message... The longer it is, the harder it is to break/crack for a 3rd person. The keyword will be like the key or handshake between you and the other person to transfer from an encrypted text to a decrypted one. You could then use the Vigenère table to encrypt or decrypt the message. Everything is in the video and is explained in details. I'm sorry if you don't get it. Maybe you could learn a little about cryptography and then come back try this cipher. Good luck!
Huuuuh, you just invent one... Take a word you two know... Sky is the limit my friend... You see? The keyword could be: "skyisthelimit" or "iunderstandcryptologynow" could all be some keywords for your messages...
Star, If you mean if you are trying to solve a code where a keyword isn't known to you and you're trying to crack it, it would be really hard but get all the info about the person who wrote the code and start using stuff about them as a key. I think that's what you're talking about correct?
Brian R lol thank you now how can you decrypt a message with out a key word. lets say im the third person trying to Figure what a encrypt message is saying without having the keyword. is that possible?
***** Yes Rony, it is possible but pretty difficult depending on the keyword's lenght. They are people paid in Communication Agencies around the world to intercept and decode these kind of messages... Most of them are really smart and pretty good in mathematics and algorythms. First step to crack a vigenere code will be calculation or guessing the key length use to encrypt the text. Then you'll have to crack the key using frequency analysis or guessing. If the key cannot be cracked correctly, you may try to use some known plain text attacks. In the end your text will be properly decrypted. But be assured that the Vigenere Cipher is incredibly difficult to decipher, because of its resistance to letter frequency analysis. Please, have a look on Simon Singh website for more information and this: www.simonsingh.net/The_Black_Chamber/
Have a look at the Vigenère Table (link in the description). If you look at my video carefuly while having a look at the vigenere table, you'll all understand how we cypher and decypher messages. :)
Good... Is WPA-2 still a good security standard? With an AES encryption, it's still really hard to crack! On the other side, do you know about the penatration tool called Backtrack 5? It runs on linux and can be runned directly from a DVD with no hard drive and no OS. Backtrack 5 has a wide variety of hacking/cracking tools and as for your wireless security, you can use "aircrack-ng" and also Wireshark to log every packets. They are all included in BT5 suite. The objective, is to capture the WPA/WPA2 authentication handshake and decrypt it. You can download BT5 here: www.backtrack-linux.org/downloads/
το μολών λαβέ πού κολάει?...αα...also i wanted to learn about the vigenere cipher in order to be able to be able to descipher everything encrypted in the first two gravity falls episodes and the ones to come!!! ευχαριστΩΩΩ!
Goes to CISSP site and gets confused for an hour. Watches 4 minute video instantly understands. Great video man. :)
Thank you Francisco... Please share the word and the link of my video! :)
This was explained very well, thanks
Thanks... No problem!
Hehe nice... It's good to learn ciphers to kids when they're young... They take it as a game and when they get older, they'll have an awesome decrypting mind! :)
Hehe i'm happy you liked it...
Artist is Trace Bundy playing the song "Dueling Ninjas"...
Simple explanation, thanks.
Simon Cataudo You're welcome!
You're right... It's the OTP encryption. There was also the one-time tape Vernam cipher on the 5-UCO. Now I think it's more the TSEC/KG-84(A/C) and the KG-245A and KG-250.
nice video it really helps
You're welcome! :)
The code is "Wow, I'm good at decrypting codes."
Gravity Falls brought me here!
Superb but which link of Gravity Falls brought you here?
ch5412 So you say the encoded message at the end is SMOFZQA JDFV? It could be coincidental but if you believe it to translate to WELCOME BACK, then the alphabet key is normal with a passcode of WIDDLE. Try it with my table, and you'll see it's working!
ch5412 OMG thats what made me find this too!
Brian R wait, where did it say widdle in the episode?
mattoiio 0517 Can we see that episode online?
Any substitution cipher that uses an autokey(repeating keyword) can be called a Vigenere Cipher
Im here because of Gravity falls, the encrypted message is ¨WEHAVEAMEETINGINTWOMINUTES¨
Good job. 😋🤘
Playfair cipher encrypts pairs of letters (digraphs), instead of single letters as the more complex Vigenère cipher system use. Playfair is harder to break since the frequency analysis used for simple substitution ciphers does not work with it. Frequency analysis can still be undertaken, but on the 600 possible digraphs rather than the 26 possible monographs. The frequency analysis of digraphs is possible, but considerably more difficult generally requires a larger ciphertext to be useful.
Awesome. Concept made easy. Loved the video.
Thanks Anuj... I'm glad you liked it! :)
Our class was given a project about ciphers... Everyone chose the easy ones while my team chose the Vigenère cipher... It looked hard but I had the hope that it was actually easy... And guess what! You prove it that it was easy... Just complicated at some levels.. but thanks! You gave my day
Wowww Alex. Your comment touches me. I'm really happy it helped you out. Just out of curiosity, where are you guys located in the world?
Actually, KG-250 and KG-255 is used at the HAIPE (High Assurance Internet Protocol Encryptor) of the NSA. A HAIPE is typically a secure gateway that allows two enclaves to exchange data over an untrusted or lower-classification network. This is perfect for nowadays... as for Simon Singh, didn't he worked at the CERN complex in Geneva, Switzerland? His books looks interesting but pretty deep. I'll try to give a try at "the code book" !
Thank you for the heads-up... :P
Thanks for tutorial helped me for preparing for my exam !!!!
Thank you very much. Im just here because of the Gravity Falls and when i searched the vigènere cipher on google it confused me. Just subscribed
Thanks, you're welcome! It's appreciated.
I was trying to look this up online and everything I read made it sound way too complicated. I was going to give up, but then I found your video. You made it extremely easy to understand. Thank you :D
Hey... I'm really happy it helped you. I'm glad you understand it more easily... :)
Really appreciate it man
You're welcome buddy!
or just use spaces as a 27th letter :P then even letters can become spaces under the correct circumstances.
This really help with decoding a message
You're welcome.
Try using a Vigenere disk or St. Cyril's cipher slide (which is more convenient and faster)
St-Cyr slide is really useful too. 👍
plz make a video on how to encode the vigeneré cipher.
Hmmmmm okaaaaay? This is actually a video of how to encode and how to decode the Vigenère Cipher. Please, refer yourself to the 1:24 mark up to 2:17. This is exactly how you encode it. To help you out, use the table, which is available in a link in the description.
@@BrianR-ML ok thanks
@@BrianR-ML I have my paper table or "Tabula recta".
@@2_art
Good. Have fun then. It will be easier with a table. 👍
This video makes it look simple- and the music is awesome as well! Where can I find it?? Thanks for doing this. :)
Josh Collins
Thank you Josh! Artist is "Trace Bundy" playing the song "Dueling Ninjas".
This was so helpful. Thank you
You're welcome man!
I'm only here to reveal the gravity falls ending message..
+Melonade AID check gravity falls on wikipedia it has all the messages
yaaa
Yes, it was called the "le chiffre indéchiffrable". Babbage employed a mix of cryptographic genius, intuition and sheer cunning to break the Vigenère Cipher. Amazingly, his work was never published in his lifetime. It was over a hundred years later, in the 1970's, that his technique was finally made public. :) Still today, it's one of the best cipher used around. If the keyword of the cipher is short, it's easy to crack but if it's long like a phrase (10 words and +), you'll almost never get it!
Thanks alot bro. I was confused at first but now everything is clear 😃
Bhargav Patil I'm glad you liked it and that it helped you...
Brian R pleasure was mine bro 😊
I use videos like these to help my programming and recreate these as fun little projects.
Marc D Help your what? Students?
I'm not a teacher... If I was a teacher, this would be a great idea :) I am relatively new to programming, so when I see videos like this, I try to recreate them via programming; it gives me something to work on and possibly learn something new in the process.
Marc D Cool. Thanks for liking the video.
This video was great can you make more on the same topics?
+Jason Todd
Thanks Jason... If I find time, i'll make more videos for sure... Please subscribe to my channel to be notified when there is new videos!
i can finally crack that goddamn ruby redfort code
Maybe it is and want you to say it was an error...
To help you out, go on google and write: "Wikihow vigenere cipher"
Take the first link saying 3 Ways to Encode and Decode using Vigenere Cipher. To go faster, if you look the links in my description, you'll have everything you need too.
I put both those in and the answer was still said to be wrong. Maybe my teacher made a mistake... thank you! for responding I really appreciate it.
Exactly... Back in the cold war era, it was about hitech as today is the PRISM program of the NSA. That was fun talking to you and learning more about cryptology and its history. Thank you!
Artist is Trace Bundy playing the song "Dueling Ninjas"...
1:52 I don't get this one.
Can somebody explain??
Now I get it. Thanks to myself
Glad you succeeded to discover by yourself. That's the first step of the process of understanding... Have fun! 👍
Nice... What kind of exam and which kind of courses are you taking?
were did you the old star trek font? very good, and great music!
It was on dafont.com a lot of fonts are available there.
Thanks for creating this really cool video. Your effort is well appreciated. Regards
You're welcome... your comments are very well appreciated. 😊
Great video! Do you know if without knowing the keyword, vigenere is harder to decipher than playfair?
So the cipher can only be decrypted if you have the code? Unless I knew it was codex, I wouldn't have been able to decrypt it, right?
Exactly! The force of the encryption always depends in two things. Not leaving spaces between words that you encrypt and always use a really long keyword (passkey). A minimum of 25-45 caracters will put the code breaker to a good test and hard work. It could take him a few hours/days to break. Also if you use a keyword with something as long as 128 caracters or 256, 512 or even 1024 caracters, you just made a passkey as hard as the encrypted connection you're using to access online to your bank account.
A lot of hard coders (and myself), are mostly using parts of a specific documents as a passkey for our message with a book you can find anywhere, even in hotels around the world... What is it? The Holy Bible...
Take this phrase for exemple, from Eph 4:29 in the Holy Bible: "Let no corrupt communication proceed out of your mouth, but that which is good to the use of edifying, that it may minister grace unto the hearers." We could transfer it into a really strong 118 caracters keyword/passkey without any spaces and special caracters, giving this: "Letnocorruptcommunicationproceedoutofyourmouthbutthatwhichisgoodtotheuseofedifyingthatitmayministergraceuntothehearers" .
The lenght of this enforced keyword renders decryption almost impossible from professional cryptographers... The time required to break the code will be too much for the "quality" of the information that this message could provide. Hope you understand more cryptography...
I know there's a video on RUclips and a cracking tool made by Brian Veitch. If you look carefuly at his video you'll see that the encrypted words in his video, have a space between them and that the keyword is only 9 caracters long. Helping a lot the decyphering of the message in a few minutes...
This was very useful. Thank you!
You're welcome! :)
You're welcome! :)
I'm happy it helped you out...
First of all thank you very much for this video...But I have a question.What if the key is a number?For example keyword:123 and the message the same with you .Which will be the encryption?
Perfect!
+Zorro
Thank you... Hooolllé!
wow you made it so much easier then wiki
+abby rans
Thanks! :)
Simply Awesome. Thank you so much :))))
You're welcome Fiona! :)
Perfection.
Thank you! Appreciated... :)
You're welcome... I'm glad you liked it! XD
The best cipher would be a list of completely randomly generated numbers between 0 and 26, with as many numbers as letters in the message you want to send. Then you increase or decrease each letter by it's corresponding number. You would both need these numbers stored. Let's say you have a list of 100 numbers. In that case the message you send can't be longer than 100 letters, because if the key loops, it is possible to crack it. That is the perfect encryption method, since it is random, the key doesn't loop, and any letter can become any other letter, randomly
Why not taking the Pi (Pythagore) string number...
The numbers of Pi can go up to 50 millions digits... If you got a 50 caracters message, it could be encoded with this number: "3.1415926535897932384626433832795028841971693993751". More digits are available here: www.angio.net/pi/piquery
Can you decode this?
LFZnY29nsjDrzhHwPINsEwjrKCklTBNZz28fGEBjq2BlaIrwyTYvZa0NZh9xrMElUFUeuO50GZSjIC5tvnFoF3EkpRSrRNUiqeNft2G0DEGvd250wxTaVYSjZ2UtaX9kGBOjiWDnwsXryNGsUMEdhCE0un8deSqwpDSrns4QZb9ge3PyNMMxrICxJBdvPSDfOAZuyVQaAT50BOGjHDPqx6ahPYZrqmZcJCOyuBDqMH50e3SbIRXwmDQdciReZRVtQN9xisHsgL51fE9aEg0GTs9gneLzKDPmZFPdpmC=
I really need it
This text looks like it is encoded in AES encryption my friend... Forget it, you'll gotta need the key or maybe the Heartbleed bug could help you out...
good tutorial. my nine yr old is a vigenere legend now
So....is the keyword in vigenère cipher is always 'CODEX' or it can be change depends on the person?
The beauty of symetrical crypto is that you can change the word as long as you want. Even take phrases, without spaces. You can take something as long as your text, but it would be hard to apply for long messages. You could take for example, this 56 characters password: "thisismysecretpasswordthatnobodyknowsexceptmeandmyfriend". Then you could apply it to any phrases you want to code and it would be extremely difficult to break. 👍
"WOWIMGOODATDECRYPTINGCODES" ...Ya gotta love this Thanks.
+Opal Preston Shirley
You're right Opal, Congrats...
thanks foe a such simple explanation it will help for my project !!!! :-*
Does this chart work on all problems that use Vigenere's Cipher?? Because I have this homework problem and its not working... I even double checked... the computer still says its wrong...
It was:
HELPME and keyword was YARN= I got FECCJE
the other one was encrypted:
WIRRC the keyword was DOWN= I got TUVEZ
Am I doing something wrong??
so I was taking cryptography classes at coursera and in it the instructor "dan boneh" does "C + w =z" but in your videos you do "c + w = y" I,m really confused ? and btw the music is beautiful,can you give me the name of the music as well ? thank you !
Hi Raj! I think Dan Boneh made an error in his cryptography video for the Vigenere Square. C+W always equal Y. If you want to be sure, just check this Online Tool, you'll see: www.sindark.com/NonBlog/CR/CR.html
Oh and by the way, artist is "Trace Bundy" playing the song "Dueling Ninjas"
Brian R Thanks Brian !
Only 26 letters are allowed??
You write your keyword's numbers as letters.
"onetwothree". You never put numbers in Vigenere Cipher and remember, your keyword must always be as long as you can! The shorter it is, the easiest it is to crack! ;)
So how can I figure it out if I dont know the keyword?
I like the explanation you gave it was really helpful. I just wish I didn't stop half way in and waste 30 min trying to solve it on my own.
Hehe, that's why It's important to listen all the way the explanations. I'm glad you liked it.
OMG thank you so much I tried reading it for the Wikipedia but I didn't get it until I saw this video
You're welcome! I'm glad you liked it... :)
Brian R Is this the encrypted message you put as a test?
XOXJNHPPEBUEFDSZQUJOHDPEFT
TheGothGal2323
Negative, the answer is:
WOWIMGOODATDECRYPTINGCODES
Try again for the first letter to find "W"... You'll then understand how the rest of the decrypting works ! :)
What's the song name
Artist is: "Trace Bundy" and song title is "Dueling Ninja"
Thanks
um... are you supposed to tell the other person the key word?
Obviously, both person should know the keyword to cipher and decipher their messages. One of the easiest and fast way I was doing back in college was that we used our own names as the keyword. It's not the safest way to encrypt it, but it was getting waaay over our teacher's knowledge. Take for example that me (Brian R) and the other person i'm talking to, my friend called John Doe. So when John Doe writes me a message for example we'll take: "Meet me at your riser" becomes "meetmeatyourriser" without any spaces. Then John encode his message using his whole name as his keyword (johndoe). So the crypted message will be: "vslgpsecmvhufmbsy". When I will receive his encrypted message, I always know we use our full names for encrypting our messages. So I already know that the message he sent me was encrypted using his name as a keyword (johndoe). Then I decrypt the message, it gives me: "meetmeatyourriser". Then, to write back to him, i'll use MY wholename as keyword (BrianR) and when he'll receive it, he'll know how to decrypt it.
Hehe yup! There's a few Androïd and iPhone apps out there to help you out crypt your message for your SMS! :)
Thanks for sharing this but it may be confused if just watching one time
thank you
You're welcome De Day! ;)
look up cryptography on khan academy. has some more good info on there
beautiful
Thank you...
Thank you so much. But the only thing I don't get is the keyword stuff. Like, how would you find the keyword to solve it? Mind explaining if you can? Thanks any ways :D
The keyword is like a passphrase between you and the person you want to send the message... The longer it is, the harder it is to break/crack for a 3rd person. The keyword will be like the key or handshake between you and the other person to transfer from an encrypted text to a decrypted one. You could then use the Vigenère table to encrypt or decrypt the message. Everything is in the video and is explained in details. I'm sorry if you don't get it. Maybe you could learn a little about cryptography and then come back try this cipher. Good luck!
Are you his Teddy Bear?! XD
Yes but in this the keyword was given. So, how would you come up with, or find the keyword if it was not given.
Huuuuh, you just invent one... Take a word you two know... Sky is the limit my friend... You see? The keyword could be: "skyisthelimit" or "iunderstandcryptologynow" could all be some keywords for your messages...
Star, If you mean if you are trying to solve a code where a keyword isn't known to you and you're trying to crack it, it would be really hard but get all the info about the person who wrote the code and start using stuff about them as a key. I think that's what you're talking about correct?
Thank you very much! Wikipedia's explanation just confused me.
Leyna Maves You're welcome. Your comment makes me proud of helping the community. Have fun...
You're welcome... Have fun in the cypher world! :P
What is EBDX T UHLL (jacksepticeye Happy Wheels ep. 82)
Who else is here because of Gravity Falls??
Arkham city
The Angry Owl Gravity Falls :D
+The Angry Owl I love Gravity Falls, but I'm not here for that!
+kemboy323
You're here for what?
I'm here for your world. HE HE HE
Okay now i know how to decript
hehe, good job Christian! :)
Thanks Raphel... Really appreciated! :P
thank you !! great video XD
EPIC VIDEO!
Thanks!
Thanks, a good explanation for me very much a novice.
You're welcome Julia!
how do u know to go to "y" from "c"?
plz help
thanks!really helpful!
Thanks
Jimmy Billy Mkandawire : You're welcome!
So do we have to use the table cause it's kind of hard to memorize the table lol
Yes obviously... Using the table is necessary! :)
Brian R lol thank you now how can you decrypt a message with out a key word. lets say im the third person trying to Figure what a encrypt message is saying without having the keyword. is that possible?
***** Yes Rony, it is possible but pretty difficult depending on the keyword's lenght. They are people paid in Communication Agencies around the world to intercept and decode these kind of messages... Most of them are really smart and pretty good in mathematics and algorythms. First step to crack a vigenere code will be calculation or guessing the key length use to encrypt the text. Then you'll have to crack the key using frequency analysis or guessing. If the key cannot be cracked correctly, you may try to use some known plain text attacks. In the end your text will be properly decrypted. But be assured that the Vigenere Cipher is incredibly difficult to decipher, because of its resistance to letter frequency analysis. Please, have a look on Simon Singh website for more information and this: www.simonsingh.net/The_Black_Chamber/
thanks ill make sure i look
Have a look at the Vigenère Table (link in the description).
If you look at my video carefuly while having a look at the vigenere table, you'll all understand how we cypher and decypher messages. :)
Wow, you sure are! Is my response to the code.
Thanks! :)
You are so Awesome! You made my homework VERY understandable and simple xoxo
Hehe! :D
I'm glad it helped you out... By the way, what kind of homework and classes are you doing? If you got anymore questions, feel free to ask! :)
I'm taking Wireless Security 😊
Good... Is WPA-2 still a good security standard?
With an AES encryption, it's still really hard to crack!
On the other side, do you know about the penatration tool called Backtrack 5? It runs on linux and can be runned directly from a DVD with no hard drive and no OS. Backtrack 5 has a wide variety of hacking/cracking tools and as for your wireless security, you can use "aircrack-ng" and also Wireshark to log every packets. They are all included in BT5 suite. The objective, is to capture the WPA/WPA2 authentication handshake and decrypt it. You can download BT5 here: www.backtrack-linux.org/downloads/
As for your keyword (YARN), answer should be: FECCKE
As for the other one, with the keyword you gave me, yes answer should be: "TUVEZ".
I
Well shit, he's not gonna make it to that meeting in 2 minutes!
edit: quickest heart in the galaxy
Mouhahahaha first time I heard this one. Exactly, i should at least wrote 2 hours. 😂
Blindspot brought me here
Which season/episode was it?
Brian R season 1 last episode as i remember where pattison was trying to decrypt mayfairs pendrive
Hehe... I don't know what to say to that other than Thank you Callum... :)
massively???
Hehe... Congrats!
το μολών λαβέ πού κολάει?...αα...also i wanted to learn about the vigenere cipher in order to be able to be able to descipher everything encrypted in the first two gravity falls episodes and the ones to come!!! ευχαριστΩΩΩ!
Ναι, το έχεις ... αυτό είναι το μολών λαβέ!
I'm glad you like the video...
Είναι χαρά μου!
Brian R ναι...Ο-Κ.....Ολα Καλα
You're welcome! :)
Take care...
WOW. I'm good at decrypting codes!
Awsome
+kepoman_94
Thanks! :)
Name of the song?
looks like the star trek font from the movies
+Herve Keptner
Font is called: Microgramma