Keyword Cipher Novels & Stories

And for the first time in forty-eight hours, I hadn't anything to read and no inducement to read through any more files. Something about the type of code used by the extremists prompted me of the one-time cypher I had organised with Nelson. Evident keywords and idioms stood for other words and phrases -- this was the key -- and I knew the code was indestructible, as long as it was only used on one occasion. With no framework, spies could do no better than predict as to the importance. But the activists had used the duplicate keys repeatedly -- in the sequence of emails about their skin problem, in the conversations about aftershave, and most probably in many other discussions that weren't du

On moving day, my mother-in-law blocked the entrance to the complex, kneeling on the ground and begging me to sign a letter of forgiveness, claiming Richard had been mistreated inside. I didn't even roll down the window. I pressed the gas and drove past her. At the new home, I handed Lydia a brand-new access card, its surface embossed with gold patterns. "Lydia, this is the card for the new house," I said. "From now on, this will be your exclusive pass." Lydia wiped her hands and accepted the card with a solemn nod. "Madam, don't worry. I'll keep it safe. I'll always have it with me!"

"That means that the messages could be real as well, right?" "Yes, but decoding them can take some time," he stated, taking one of the notes from the table. "Can you do it?" I asked, hopefully. "It's a tricky thing to do without the keyword…" he smiled wryly. I looked into his eyes, and already knew what he meant. "It's Vigenère cipher, isn't it?" I felt an arising headache just saying that out loud.

A key. ---

The scent of Michael’s fresh shower had completely vanished, replaced by the sharp, bitter smell of scorched dust and the stale dregs of cold espresso sitting at the bottom of a ceramic mug on the corner of the desk. On her screen, the cursor blinked with a relentless, mechanical rhythm, hovering right over the core cryptographic anchor of the entire triplex layout. [DIRECTORY: /SYS/SECURE/ROOT_AUTH/TOKENS/] [ACTIVE_TOKEN: MASTER_KEY_01_REDUNDANT] [ENCRYPTION_SCHEME: SHA-256_HARDWARE_BOUND] [STATUS: OWNED_BY_REMOTE_DEVICE_09]

“I don’t know. Maybe. That seems awfully simple, though.” “I think the key is more like a map key than an actual mechanism,” Christian said, not even glancing in Cassidy’s direction as he spoke. “If they’re standing in a hub with tunnels shooting off in all directions, and someone managed to pin it down so they don’t shift out of order, I would say the key is actually the hub itself, not the metal holding it in place.”

I was creating a tiny, hidden portal. I wrote a quick piece of code—a reverse shell—and installed it deep within Higgins's browser cache. This shell would only activate if it received a very specific, coded email. I then sent one last, encrypted message using the external proxy link to Mia's burner account: the activation code. > Evelyn (Coded): New contact method: Higgins's private email. Subject Line: The Queen needs a new cipher for her chess problem. Body: [4-digit code]. Send every ten days exactly. Do not miss a beat. If the code works, the reply will be confirmation.

“These codes you see here are called ‘Circolo’.” He then stood up and walked to where I sat, opposite him. He then stood beside me, his hand resting on the table for balance. “This is a complex code that our empire's communication relies on and is known to only trusted members.” I nodded as I listened attentively. "Circolo uses a combination of Caesar cipher and Vigenère cipher. The key changes every 72 hours." He paused to let what he had said sink in. As Don Antonio spoke, my mind wandered to the secret interactions that I’d observed between Lorenzo and Sophia.

"The Council’s tactical net is encrypted with twenty-eight-bit rolling ciphers. Not even the brokers on the mid-tier can read their deployment vectors without a corporate terminal." "She doesn't need a terminal," I said, stepping past Dante's flank until the black shadows in my eyes were inches from Kemi’s green-lit rifle barrel. "She’s the invoice, Kemi. My father slaved the entire Vane Global data-stream to her baseline before his heart stopped. She isn't reading their ciphers—she is the cipher." Kemi looked down at the child. The little girl didn't flinch. Instead, she let out a short, small breath that smelled faintly of the clean, metallic ozone that used to live inside the Spires' serv