How Detective Series Writers add Mystery to their Stories (Cryptography)

1. Welcome!: From this to this to this to this, and to this, all use mysteries and ciphers. Nice. Want to write secret message like in mysteries and scape rooms or in your journaling. Today, I teach you three ciphers, three classic methods. Easy to learn, fun for stories and puzzles. Oh, welcome. Thanks for coming. I was waiting for you. To make it fun, I've turned this class into a mystery case. I have invited you here in the creative detectives flat to solve our clients' cases. Miss Jade, who is a writer, has asked us to create a coded message for her story. I ask, Miss Jade, miss Jade, which of these four types of stories or movies or writers do you like Donge and Yangon. A series of unfortunate events and national treasure the Imitation Game and Gravity Falls or Edgar Allan Poe and Sherlock Holmes. Miss Jade chose Donge and Yangon, so that gave me a hint. That Miss Jade prefers transpositional algorithms. I'm Haddis Maliki and accepted this case with a background in computer engineering and storytelling in animation. I think we together, can solve the cases of these clients. Ready to solve this case together, let's dive into the world of mystery ciphers. Let's solve our case for today. 2. Warrior Massage in Rail Fence: I once upon a time, a city was under a spell. Creativity was locked away. Citizens were searching for the key and only a brave warrior had the key. But how to reveal its hiding place, which was Blue Lake without alerting enemies. Brave Warrier found his weapon. He looked at the zigzag pattern of the rail fence. His weapon, yes, rail fence cipher. Let's crack it together. Our message Blue Lake. Now we need a shared key, a number for rows, for example, three. With a key of three, you arrange the letters in a zig zag rows like the patterns of a fence. Start at top, B down to L U, up to E, and so on for Blue lake. What do you notice? It's a wavy pattern to encrypt, read row by row. First, row B, space, use a dash for it. Our cipher is this, B dash Elka scrambled and secure. To decode, receivers use the same key, rebuild the zigzag and read diagonally. What if the key was four? Yes, with zigzag across four rows instead. More rows, deeper zigzags, try it. Rail fence is part of a bigger family Route ciphers. Instead of zigzag, the pad can be a spirol, snake, or any route you choose. If you are curious, search it up and share what you find in the discussion part. And the fun twist, if you love decorating messages with patterns or aging papers for that vintage vibe, check out my JJmjar section on my sketcher channel. Now your challenge. Pick a message. What's your message? Choose a key, use key tree or experiment with other numbers, and hide it with rail fence. Post it in the project gallery, I'd love to see your codes. Excited for more. Next up, black Cipher. Let's build on this. 3. Light and Detectives: Block: Once upon a time in a city of secrets, there live creative detectives. They believe that clarity in life comes from creating, but how to share their secret message? The creative detectives. Drum roll enter the black cipher, a transposition trick that rearranges letters and agreed for ultimate mystery. Like our previous ciphers, we just shuffle positions, no substitutions, just transposition. We need a key. Here it is light, a word only sender and receiver shape. Since light has five letters, we make five columns. Right light at the top of columns. Now fill the grid with the message row by row, the creative detectives, T H E four space, C, E a, TI, and so on down to the end. To encrypt order columns by the keys alphabet position, LIGHT, which becomes four, three, one, 25. Now we read down based on new order column by column. The result looks strange, a blank, Cs, and so on. That's our cipher text, to anyone else. Nonsense. To the receiver who has the keyword perfectly clear. To decode, the receiver also write five columns, rearranges them with the key light, and then reads row by row. That's why the keyword is vital. Sender and receiver must share it. Hadis, why talk about deciphering? Because in fiction, sometimes you want to show how the message is revealed in cryptography, both directions, cipher and decipher are equally important. What about your project? Have no ideas? Okay, I suggest you encrypt this message. Unlock creativity with this key, shine. Come to the next lesson to get a bird's eye view. 4. Physician in a Palace: Scytale: Imagine you're a clever physician trapped in a palace, desperate to save a sick child outside. How you send out a sacred prescription. Let's try. Once upon a time, a child was sick. In the palace, the wise physician wanted to help, but she could not leave the gates. She had to send this message to the parents, but how without being caught? The message is ginger and milk for three days. She found a bottle. The parents had the same bottle at home. She scribbles her cue on a strip of paper, but how to hide it? She wraps paper around the simple bottle like this. Then she writes one letter at a time across the stripes, G I N G, then goes down to the next row, ER and goes on. Unwrap it now. What do you see? A jumbled mess? That's the magic, unrecognizable to the gates. But when parents wrap it again on the same bottle, it becomes clear, right? For the parents to decode, they need the same bottle. These shared objects here, the bottle is the key. Both sender and receiver need it. In cryptography, the key is the secret only the two sides share. This method called the Skitalicipher, is one of the oldest in history. It even appears in TV dramas like Donge and Yangom. Eskiali or as I have seen some pronounce it, SkyTaeT is a Greek word. I read some paper that some researchers even proposed using Ruby cube instead of a bottle. Imagine wrapping your secret around that. If you're interested in that paper, let me know in the discussion part. So here's your project. Cut a strip of paper, find any roll or bottle you have, and try this cipher yourself. Post your project. I'd love to see your secret messages. See and there next part. 5. All were transpositional: Three ancient ciphers, one modern mystery. Let's connect them all to protect miss Jade's secret. All right, Detective, by now, you've practiced three classical transposition ciphers, skital wraps, railen zigzags, black cipher shuffles. All of them hide messages by simply changing the position of letters, no substitutions, no symbols, just rearrangement. In each case, the secret is the key, something only sender and receiver share. But what if an outsider tries to break the code? Since the leaders themselves don't change, frequency analysis won't help. Instead, they rely on a method called brute force. That means testing every possible arrangement. But of course, for long messages, only a computer can handle that, right? You can make it more complicated. You can even combine these methods, run a block cipher twice or mix skitaly with rail fence. Each layers make the puzzle harder to crack. Now it's your turn. Use one or all three of these algorithms to hide a secret message. I've prepared a template you can download and filling. Post your cipher in the project gallery, and if you try decorating your paper or aging it even better, see you there. Please also leave a quick review, the str writing, and a few words. It really helps me to make my classes better. It helps other students to choose whether to enter this class or not and keeps the detective cases going. Next, we'll deliver this message to our clients and in future cases like Mr. Glitters, we'll explore substitution ciphers and frequency analysis. 6. Next Meeting: Uh Thank you very much for accepting my invitation and that you came here today to creative Detective Room. It was an honor for me to be with you and congrats. You learn a new skill with very interesting applications. By the way, some of you asked how to add these decorations to your papers. If you are interested, I have some recorded sessions in the juju Jar room that I teach how to add these decorations to papers or another session that I teach how to age papers. Also, here I invite you to come again to creative Detective Lab to solve our three other clients cases. I hope you accept my invitation, and I see you soon. Thank you.