How to Use a Basic Cipher to Encode and Decode a Secret Message

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  • Опубликовано: 29 окт 2024

Комментарии • 141

  • @phildo87
    @phildo87 5 лет назад +63

    It's crazy how simple these can be but still be useful. Obviously this wouldn't last against a government but would be fun to do with friends.

    • @dianehouse3818
      @dianehouse3818 2 года назад +1

      Can you help a targeted person, subject to covert framing of grave mental illness, falsification framing of crimes evidence with no due process of any law. Understand it's operation hummingbird? Non-investigative suspect, it was placed in a program as retaliation. What if this was a middle-aged grandmother. Can you help this person immediately?

    • @smoothbreezy7216
      @smoothbreezy7216 Год назад +2

      @@dianehouse3818 are you ok?

    • @MrBawkbGawks
      @MrBawkbGawks Год назад

      @@dianehouse3818 are you a bot?

    • @chrismccaffery1091
      @chrismccaffery1091 Год назад

      Two words: PGP encryption.

  • @optioncoachjohn
    @optioncoachjohn 3 года назад +18

    To take it up to a near impossible to decipher message, add a number to the key, say 3. Then with each letter deciphered, you count up 3 letters further on the alphabet and use that letter instead.

  • @universalscience360
    @universalscience360 2 года назад +3

    Since pm of Pakistan Mr Khan ousted from office I have been searching and learning what is cipher and how to write it. I would like to say this video class on producing cipher is brilliant and very simple and perfectly coded.
    Thank you to teach me cipher writing. 👌💐

  • @dandaniel66
    @dandaniel66 4 года назад +12

    Love the way you explained it.was quiet easy to grasp.looking forward to more knowledge empowerment from you.Thank you Sir.

  • @mycroft_moriarty
    @mycroft_moriarty 2 года назад +2

    There was a POW in Vietnam who used a lesson he recalled from his time in Boy Scouts to maintain encrypted communication with the other POWs captured with him, to keep everyone in contact, keep up morale, maintain chain of command, and more. It's really simple. It's a 5x5 grid (dropping C, though I'd drop K) so D is in row 1, column 4, so they'd knock once, then four times to communicate D. Personally I used a modified 6x6 grid to avoid both dropping letters, and adding 0-9. I've used it to communicate covertly on more occasions and in more ways than I'm willing to divulge but it's been a great lesson. This can be combined with all the tools Andrew has included here as well.

    • @mrkooter
      @mrkooter Год назад +1

      It’s called The Tap Code, we teach it at SERE school.

    • @mycroft_moriarty
      @mycroft_moriarty Год назад +1

      @@mrkooter Didn't think that was the actual name, just what someone was calling it... Also really great that it's being used as it seems like a solid concept. Thanks for confirming the name.

    • @mrkooter
      @mrkooter Год назад

      @@mycroft_moriarty No worries, glad to help!

    • @mycroft_moriarty
      @mycroft_moriarty Год назад

      @@mrkooter I know you can't say much about SERE training...because...what would be the point right? What I'd like to know, if you care to indulge me; being an instructor, you've been though it, I presume to the highest degrees possible. Do you feel more empowered because of it? Not just on the battlefield, but in your daily life?

    • @mrkooter
      @mrkooter Год назад

      @@mycroft_moriarty most definitely.

  • @ColdWarPrepper
    @ColdWarPrepper Месяц назад

    Great explanation - thank you - very useful in post SHTF environment for vast majority of people. As a retired 98B (Cryptanalyst) should one of my 98G's (Voice Intercept Operator) intercept this, I would do 2 things - 1. Letter Frequency Count - especially common digraphs or double letters and/or 2. Crib drag - gosh do I use a lot of graph paper

  • @premiumtutors
    @premiumtutors 2 года назад +2

    Appreciate the great length that you go to deliver this content for free

  • @squibmis8381
    @squibmis8381 4 года назад +12

    Omg ty so much for this I’m so interested in all these stuff iMa show my friends and family to outsmart them haha

  • @Real_IanScott
    @Real_IanScott Год назад

    This is similar in nature to a Caesar Cipher system, but using a Key Letter. Excellent, and simple to follow. Thanks for sharing!

    • @JarppaGuru
      @JarppaGuru Год назад

      and easy decrypt in head or just guess only 26 posibilitie LOL i would change key every letter
      or encryp that encrypted message another time with same or other key its 26*26 posibilities and become not so easy bcoa you not get anyting trying all 26 combo you think it might be rot13 i try it. noh it was not xD and even python script would decode it pretty was i means less than second LOL

  • @alvankarpas6245
    @alvankarpas6245 5 лет назад +6

    Good stuff. Keep it rolling...

  • @zarry252
    @zarry252 4 года назад +12

    omgggg i understand u! more than my teacher!!!

  • @CountofHazelview
    @CountofHazelview Год назад

    This is to be used between friends only since any cryptologist can break it. Only a created codebook with same number of letters (4, for example), combined with an One Time Pad, has proved to be impossible to break. The codes than transformed into a cipher, provide an second layer of security.

  • @m4dun14p
    @m4dun14p 11 месяцев назад

    Very informative. I’d be more confident in the field using something like solitaire where it can be done by hand but the keystream adds mathematical complexity. It would seem the moment computers get involved for analysis even more complex hand ciphers are quickly reversed. This leaves me wondering if hand ciphers are in fact used in the field, and under what circumstances would it be appropriate?

  • @beachboardfan9544
    @beachboardfan9544 5 лет назад +5

    You've got to know better cipher's than that, thats got to be the most crack-able cipher of all time!
    Are most ciphers math based these days or is their still use for key letter ciphers or T9 ciphers?

  • @CamerieriZeppoleMix
    @CamerieriZeppoleMix 5 лет назад +3

    Shared this video, great job

  • @OmarRahmani-c8n
    @OmarRahmani-c8n 6 месяцев назад

    That's very useful, but when Joe keep to sending messages to Jim with the same pattern Letter''E" Jake it's notice that E repeat in every msg so we have to make that more complicated and changing the key letter in every msg .

  • @WorldTravelerCooking
    @WorldTravelerCooking Год назад +1

    Also as a note, cypher security breaks down with message length as it is subject to statistical attacks.

  • @kalebbillig3472
    @kalebbillig3472 Год назад

    This type of single encrypted message can easily be decoded without knowing the key letter by simply decoding the 26 possibilities and seeing which version actually makes sense plus or minus a key letter in the message

    • @kalebbillig3472
      @kalebbillig3472 Год назад

      You actually only need to do 25... and may be able to eliminate quite a few easily without actually decoding the full message

    • @mikkodarobloxian6316
      @mikkodarobloxian6316 Год назад

      @@kalebbillig3472 but how would they know its this type?

    • @Idioticfinnishperson
      @Idioticfinnishperson Год назад

      @@mikkodarobloxian6316 kaka

  • @SunRebeLionShah
    @SunRebeLionShah Год назад

    Thank you 😊 greetings from Tehran Iran

  • @131raghav
    @131raghav 3 года назад +1

    I know these basic stuff but i need to get to the advance level of cipher / cryptography .. which book would you suggest ???

  • @dennis8309
    @dennis8309 4 года назад +8

    What is the probability of having a keyword cipher (first position), decripted without knowing the key or position it was placed in. Also would any cipher be more difficult to solve if there are no spaces between words? Thanks...

    • @Andrew-Bustamante
      @Andrew-Bustamante  4 года назад +4

      The first position keyword cipher could be forced with almost 100% probability given enough time. Alpha numeric first position basically only leaves 36 potential options, If you treat that first position as a single character. I will also add that removing spaces makes it easier to crack a cipher, where adding spaces makes it exponentially more difficult. It is counterintuitive, but inherently we have been cognitively programmed to expect encryptions to not use spaces. The addition of spaces increases both the total length of the encryption and the number of potential options.

    • @dennis8309
      @dennis8309 4 года назад

      @@Andrew-Bustamante - Hey, thx for the response. Would shifting the keyword to a different make it anymore difficult or would it be the same degree of difficulty? That is assuming it's a person trying to crack it vs a computer which time would then be irrelevant. I am surprised at the fact that removing spaces makes it easier, can you explain further please...thx for your time.

    • @rauldempaire5330
      @rauldempaire5330 2 года назад

      @@Andrew-Bustamante that makes sense, thank u.

  • @Windy3s
    @Windy3s 2 года назад +1

    Best teaching ever thanks

  • @essenestephanie
    @essenestephanie 3 года назад +6

    Thanks for opening instructions. There must be a program in today's techno age where you upload an basic aap and it goes through the alphabet pulling the pattern and decrypt. say If the English, only 26 letters , so shouldn't be too hard. Gonna practise these technique with my little smart niece who would get a kick out of this.

    • @essenestephanie
      @essenestephanie 3 года назад

      * say if the cipher is in English (for those grammar N**i.)

    • @brandolinocaston
      @brandolinocaston Год назад

      I have a Python Script for you. It takes the encoded text and shifts it on every iteration by 1. The only thing you have to do ist to put your text in and check the readable line. The script also ignores nonalphabetic characters.
      The code:
      def shift_text(text, shift):
      shifted_text = ""
      for char in text:
      if char.isalpha():
      ascii_offset = 65 if char.isupper() else 97
      shifted_char = chr((ord(char) - ascii_offset + shift) % 26 + ascii_offset)
      shifted_text += shifted_char
      else:
      shifted_text += char
      return shifted_text
      def generate_shifted_versions(text):
      shifted_versions = []
      for shift in range(27):
      shifted_text = shift_text(text, shift)
      shifted_versions.append(shifted_text)
      return shifted_versions
      text = input("Your text: ")
      shifted_versions = generate_shifted_versions(text)
      for i, shifted_text in enumerate(shifted_versions):
      print(f"Shifted Version {i + 1}: {shifted_text}")
      You will get something like this:
      >>Your text: this was easy
      Shifted Version 1: this was easy
      Shifted Version 2: uijt xbt fbtz
      Shifted Version 3: vjku ycu gcua
      Shifted Version 4: wklv zdv hdvb
      Shifted Version 5: xlmw aew iewc
      Shifted Version 6: ymnx bfx jfxd
      Shifted Version 7: znoy cgy kgye
      Shifted Version 8: aopz dhz lhzf
      Shifted Version 9: bpqa eia miag
      Shifted Version 10: cqrb fjb njbh
      Shifted Version 11: drsc gkc okci
      Shifted Version 12: estd hld pldj
      Shifted Version 13: ftue ime qmek
      Shifted Version 14: guvf jnf rnfl
      Shifted Version 15: hvwg kog sogm
      Shifted Version 16: iwxh lph tphn
      Shifted Version 17: jxyi mqi uqio
      Shifted Version 18: kyzj nrj vrjp
      Shifted Version 19: lzak osk wskq
      Shifted Version 20: mabl ptl xtlr
      Shifted Version 21: nbcm qum yums
      Shifted Version 22: ocdn rvn zvnt
      Shifted Version 23: pdeo swo awou
      Shifted Version 24: qefp txp bxpv
      Shifted Version 25: rfgq uyq cyqw
      Shifted Version 26: sghr vzr dzrx
      Shifted Version 27: this was easy
      You can run and test this here:
      www.programiz.com/python-programming/online-compiler/
      Have a nice day 😎

  • @kawaiibebsy2768
    @kawaiibebsy2768 4 года назад +8

    I knew this code from Project Loki XD

    • @ThreeTreechaos
      @ThreeTreechaos 3 года назад

      Ooohhhh PLayer spotted!😎ayee 🖐🏻xD
      Ps..im just here trying to figure out kung ano ang code na ginamit sa encrypted text na dinidecode ko ngayon hahhaha

  • @JoeMac1983
    @JoeMac1983 7 месяцев назад +1

    "BE SURE TO DRINK YOUR OVALTINE" 😂

  • @ianhamshaw30
    @ianhamshaw30 Год назад

    Hey, this is awesome! Question about clarity of communication. I'm looking for a specific episode of the podcast (or maybe it's an interview) where Andrew discusses a particular style of communication that the CIA teaches. I think the episode's nucleus is that communication clarity is a skill worth pursuing. Did anyone get any clues on tracking this episode down?

  • @Chris_Hetherington
    @Chris_Hetherington 3 года назад +5

    Its a caesar cypher... very easy to break

  • @arnachatterjee91
    @arnachatterjee91 3 года назад +4

    So, there's a fixed key letter for days..? Like Monday Tuesday and so on...
    Is it specified or it's how the encryptor makes it.

    • @Faisalbakhashwain
      @Faisalbakhashwain 2 года назад

      Is there an answer

    • @sfk4223
      @sfk4223 11 месяцев назад

      I wonder about this also, it was not explained. Please answer! Love the videos, I am doing the Operation: Real-Time now hoho

  • @morengothemoringapeople
    @morengothemoringapeople Год назад

    Loved this video the most

  • @JarppaGuru
    @JarppaGuru Год назад +1

    6:35 on 26 combos to try to get some word and wow cracked lol. why not move every letter key ammount. and it will com 26*something lol

  • @STILLDCT
    @STILLDCT 2 года назад

    Thank you have learnt a lot in this few minutes thank you

  • @rauldempaire5330
    @rauldempaire5330 2 года назад +1

    Dan Brown should have taken your courses....

  • @tero5351
    @tero5351 2 года назад +1

    I'd like to know if you have time to figure out some secret message in a video file, I got one in a discord server I'm in and I'd just like to know what it says. Been like 2 years since this was uploaded but it'd be cool if you were still around and saw this

  • @New2chem
    @New2chem Год назад

    I have a question what if you mix the letters or use numbers under the alphabet?

  • @realdeal139
    @realdeal139 2 года назад

    Super great teacher

  • @dizuko3241
    @dizuko3241 2 года назад

    I really want to learn things like hacking, decode a secret message, coding, and many more things. My problem is I don'\t know where to start, guess I'll start right here. Any Tips Sir? How do I became good at this stuff pleaseee

  • @willwetherington
    @willwetherington Год назад

    Can you use a key letter off of the second alphabet string?

  • @kennethstudley2784
    @kennethstudley2784 2 года назад

    You habe alot of comments so I'm ask a question that maybe it has been ask or not.so anyway can you come accross a cipher and not realize it and if so how would you recognize its a cipher in short I've been told you can write a short story beginning to end but in reality it's a cipher? Is it possible to recognize this typez

  • @derekgreene2304
    @derekgreene2304 Год назад

    Very good!!

  • @sam_lvlcnrn1492
    @sam_lvlcnrn1492 4 года назад +2

    Here from the LOC codes hehe

  • @mikkodarobloxian6316
    @mikkodarobloxian6316 Год назад

    very helpful!

  • @AribilolaAnuoluwa
    @AribilolaAnuoluwa 11 месяцев назад

    Must it be 5charater from the left
    What if it’s doesn’t have a key

  • @jennifereades5564
    @jennifereades5564 2 года назад

    How do you decide coordinates in cipher?

  • @AribilolaAnuoluwa
    @AribilolaAnuoluwa 11 месяцев назад

    Pls who know what’s the key letter for Thursday is

  • @MrKockabilly
    @MrKockabilly 2 года назад +1

    I wonder how long (or how quick) Alan Turing would be able to crack this.

  • @JarppaGuru
    @JarppaGuru Год назад

    16:00 not matter its easy decrypt its only 26 possibilities

  • @kwentongpotchero6750
    @kwentongpotchero6750 3 года назад +1

    Thanks

  • @obeysayer
    @obeysayer Год назад

    Hey andrew, could i give you something to decipher its a fun little game.

  • @creativegramm9922
    @creativegramm9922 3 года назад +1

    Thank you so much

  • @saiahasiasi8777
    @saiahasiasi8777 Год назад

    Well you seeee

  • @JarppaGuru
    @JarppaGuru Год назад

    16:49 still not matter still only 26 possibilities

  • @markmcgrath6812
    @markmcgrath6812 Год назад

    I learn auditorily and this video was great, but I have no freaking clue how I am messing up this cipher. I can literally do BATCO and OTP all day but someone taught me that. Those days you feel like an idiot I tried without the D with the D and realized I had encrypted the wrong way. I have no idea what I am doing wrong sdanaeopdajknpdwniusawg Could someone explain to me what I am doing wrong?

  • @buddhstyle
    @buddhstyle 2 года назад

    Sub’d homie

  • @brandolinocaston
    @brandolinocaston Год назад

    Nice. I have a Python Script for you. It takes the encoded text and shifts it on every iteration by 1. The only thing you have to do ist to put your text in and check the readable line. The script also ignores nonalphabetic characters.
    The code:
    def shift_text(text, shift):
    shifted_text = ""
    for char in text:
    if char.isalpha():
    ascii_offset = 65 if char.isupper() else 97
    shifted_char = chr((ord(char) - ascii_offset + shift) % 26 + ascii_offset)
    shifted_text += shifted_char
    else:
    shifted_text += char
    return shifted_text
    def generate_shifted_versions(text):
    shifted_versions = []
    for shift in range(27):
    shifted_text = shift_text(text, shift)
    shifted_versions.append(shifted_text)
    return shifted_versions
    text = input("Your text: ")
    shifted_versions = generate_shifted_versions(text)
    for i, shifted_text in enumerate(shifted_versions):
    print(f"Shifted Version {i + 1}: {shifted_text}")
    You will get something like this:
    >>Your text: this was easy
    Shifted Version 1: this was easy
    Shifted Version 2: uijt xbt fbtz
    Shifted Version 3: vjku ycu gcua
    Shifted Version 4: wklv zdv hdvb
    Shifted Version 5: xlmw aew iewc
    Shifted Version 6: ymnx bfx jfxd
    Shifted Version 7: znoy cgy kgye
    Shifted Version 8: aopz dhz lhzf
    Shifted Version 9: bpqa eia miag
    Shifted Version 10: cqrb fjb njbh
    Shifted Version 11: drsc gkc okci
    Shifted Version 12: estd hld pldj
    Shifted Version 13: ftue ime qmek
    Shifted Version 14: guvf jnf rnfl
    Shifted Version 15: hvwg kog sogm
    Shifted Version 16: iwxh lph tphn
    Shifted Version 17: jxyi mqi uqio
    Shifted Version 18: kyzj nrj vrjp
    Shifted Version 19: lzak osk wskq
    Shifted Version 20: mabl ptl xtlr
    Shifted Version 21: nbcm qum yums
    Shifted Version 22: ocdn rvn zvnt
    Shifted Version 23: pdeo swo awou
    Shifted Version 24: qefp txp bxpv
    Shifted Version 25: rfgq uyq cyqw
    Shifted Version 26: sghr vzr dzrx
    Shifted Version 27: this was easy
    You can run and test this here:
    www.programiz.com/python-programming/online-compiler/
    Have a nice day 😎

  • @princeshepherd
    @princeshepherd Год назад

    Jeya

  • @SuppaPro
    @SuppaPro 3 года назад +1

    Is it possible to use 2 key letters? What if somebody said, “Matthew 6:21 is key” and leaves you with an encrypted message of “FKMUHRJCQEITHK” In this case, how would I go about solving this?

  • @brentrubin
    @brentrubin 2 года назад

    What if you don't have a key letter?

  • @uwumaster2071
    @uwumaster2071 4 года назад +2

    you finally found out his secret. I've been thinking about his legacy that he past downed to my father. My father wont accept it. But i think i will. Now u will probably find this message . I've scattered it all across youtube. All you need to do is just find it. Its in cipher and contains names of my next victims. Good luck.

    • @Yer___
      @Yer___ 3 года назад

      What do you mean your pfp is cute all in all but your Message is Creepy

  • @Freaky_Lemonade
    @Freaky_Lemonade 2 года назад

    I guess 41 thousand people know how to encrypt ciphers now

  • @vincentlayson5969
    @vincentlayson5969 3 года назад +2

    E J K E Y A

  • @WorldTravelerCooking
    @WorldTravelerCooking Год назад

    Though using A as a key letter would be rather pointless ;-)

  • @Aman-rn9vn
    @Aman-rn9vn 3 года назад

    Find the secret message:
    dvoowlmv
    Hint:
    @bash
    Time:
    8 hours
    Note: you can use google
    Plz

  • @OmarRahmani-c8n
    @OmarRahmani-c8n 6 месяцев назад

    But to trick the covermenrt u should created your own code. Like Morse code with cipher and something else 😅

  • @stephencarmichael5156
    @stephencarmichael5156 Год назад

    Prison kites use the same premises

  • @insekta17
    @insekta17 2 года назад +1

    eokwl trusted you i though i could too so why the bloody hell does makarov know you

    • @insekta17
      @insekta17 2 года назад

      one thing needs to be deciphered

  • @AribilolaAnuoluwa
    @AribilolaAnuoluwa 11 месяцев назад

    What if I wasn’t given a code

  • @AkV--
    @AkV-- Год назад

    How Monday becomes L??

  • @Koato
    @Koato 5 лет назад +9

    Simple ciphers are fun, this was a very clear explanantion Andrew. ekitrnnbd wa

  • @hunniesanshiwu8273
    @hunniesanshiwu8273 2 года назад +2

    EBWNP

  • @danialhakim841
    @danialhakim841 2 года назад

    I came here because i want to know how zodiac create those code

  • @Maaaqaaaaaaa
    @Maaaqaaaaaaa 4 года назад

    what type of cipher is this?

  • @stochasticdifferentialeq.1393
    @stochasticdifferentialeq.1393 2 дня назад

    This is so elementary but try to use digits encryption using algorithmic processes that would be tough.

  • @328ilover
    @328ilover 2 года назад

    o Es UOI please decrypt that

  • @Locozigzag
    @Locozigzag Год назад

    Great now everyone knows 🤷🏻‍♂️

  • @JarppaGuru
    @JarppaGuru Год назад

    14:31 everytime jake so dumb not notice. could change key every letter. bcoz you can guess those messages. how many 2 word words on english lol and allready iaap so easy guess

  • @soundsofsilence1090
    @soundsofsilence1090 7 месяцев назад

    Now use it with the Russian alphabet!

  • @travelreview5962
    @travelreview5962 Год назад

    Yo man you're extremely intelligent and listening to you is a privledge. But if your goal is for more people to see your videos... get an editor for the videos and put your face on camera. Make something with some cuts, anything slow like a faceless figure writing the alphabet twice, cut that way down. If your goal isn't for millions to see this then, ignore everything I said lol. You talking to yourself has to have a much different presentation then you having a conversation on a podcast, it has to be more quickly paced.
    Actually i feel like you probably knew everything I stated before reading my comment so... maybe I just wasted quite a bit of time.

    • @LOFIMusic-wx5xu
      @LOFIMusic-wx5xu Год назад

      its just fine like it is.....niche understands....

    • @travelreview5962
      @travelreview5962 Год назад

      That all depends on the goals of the channel 👍

  • @모세스-n6o
    @모세스-n6o 4 года назад +1

    URGENT: I need to know how to decode a message my friend gave me in 24 hours, but the key he gave was multiple letters. Please help I dont have time.

    • @izaanshafique5284
      @izaanshafique5284 4 года назад

      what is the message
      Send the information here, so I can try

  • @Ayaankhan-zc1ev
    @Ayaankhan-zc1ev Год назад

    It's so easy to decode,, that's not secret language.. I can give u the world most secret language but u will pay 3 million $ for that

  • @admiral_cheems7983
    @admiral_cheems7983 3 года назад

    The first letter in mine is legit A how do I figure it out

    • @avocado4662
      @avocado4662 2 года назад

      Put A as second letter and key in the first position

  • @ozg.8461
    @ozg.8461 2 года назад

    OMJQEAYQ FTMZW KAG!

  • @popscratchie3985
    @popscratchie3985 Год назад

    I truly hope this isn’t the level of cryptography at the CIA or we’re all stuffed.

  • @uwumaster2071
    @uwumaster2071 4 года назад

    its a joke......

    • @Yer___
      @Yer___ 3 года назад

      My next victim is u Stop making creepy jokes

  • @SuperPenguin34
    @SuperPenguin34 Год назад +1

    EBKNPJEPI
    (E is your key)