Cryptography tools

Free tools and resources helping you solve CTFs, ciphers, logic puzzles and room escape games. Classic Ciphers In cryptography, a cipher (or cypher) is a method for protecting data through encryption and decryption. Most ciphers require a specific key for encryption and decryption, but some ciphers like the ROT13 or Atbash ciphers have fixed keys. Many of the ciphers listed here were for military or other significant use during an earlier time, but today mostly are used only by puzzle makers. Text and Word Tools Wordplay and witty texts is one of the oldest forms of puzzles. Anagrams have been traced to the time of the Ancient Greeks, and they still are popular in modern brain teasers. Synonyms are common not only in crosswords, but plays a role in a wider range of puzzles. This section also contains text processing tools, which are useful for reversing, changing case, etc of texts. These tools will help you identify the types of encodings and ciphers used. Modern Ciphers Modern encryption methods can be divided by the key type and their operation on input data. Symmetric key algorithms use the same key for encryption and decryption (private key cryptography). Asymmetric key algorithms use different keys for encryption and decryption (public key cryptography). With symmetric keys, the sender and receiver must have agreed upon a key in advance, while with asymmetric keys anyone can send messages to the receiver. Also depending on their operation, ciphers are either block ciphers (encrypting a fixed block size) or stream ciphers (encrypting a continuous stream of data). Steganography While encryption protects information from being understood, an even higher protection would be if the information is hidden. The word steganography comes from the Greek word "steganos", meaning concealed, and "graphein", meaning writing. Modern steganography can hide information in images and audio files. Also information can be manually hidden in images through the use of very low contrast colors or metadata. Encodings Computers and digital devices need to represent letters in appropriate ways. ASCII codes are very common for storing texts, but with the demand to support more non-English texts,

Rasterschlüssel 44 One of the strongest German manual ciphers during the Second World War. Straddling Checkerboards A series of tables to convert text into digits to prepair them for encryption. SECOM A powerfull manual cipher that uses a combination of checkerboard, fractioning and double disrupted transposition. The Gold-Bug Edgar Allan Poe's story which includes the breaking of a monoalphabetic substitution cipher. Cipher Classics Tool Software to encipher messages with a list of well-known classical manual ciphers. Off-site Links (offsite, open in new tab) List of Cipher Types at the American Cryptogram Association (ACA). Crypto Lessons and Tutorials by LANAKI at the ACA. Ciphers from the Classical Era on Practical Cryptography. Number One from Moscow CIA publication of David Kahn's description of the Soviet VIC cipher. See also FBI's Hollow Nickle case. CrypTool open source software Learning platform for cryptography and cryptanalysis. Pencil and Paper Systems on John Savard's extensive Cryptographic Compendium. Hand Ciphers at Crypto Museum Various real manual cipher tools explained in detail and many photos. Crypto Corner with many manual ciphers and online tools to perform encryption by Daniel Rodriguez-Clark. © Dirk Rijmenants 2004. Last changes: 16 December 2022

3pip3 install cryptography# 👇️ If you get a permissions errorsudo pip3 install cryptography# 👇️ If you don't have pip in your PATH environment variablepython -m pip install cryptography# 👇️ For Python 3python3 -m pip install cryptography# 👇️ Using py aliaspy -m pip install cryptography# 👇️ Alternative if you get a permissions errorpip install cryptography --userIf you also use the paramiko package, makesure to install it as well.Copied!pip install paramikopip3 install paramikopython -m pip install paramikopython3 -m pip install paramiko# 👇️ For Anacondaconda install -c anaconda paramikoAlternatively, you can use the IDE itself to install the module.Click on "File" > "Settings" > "Project" > "Python Interpreter".Click on the + icon and type cryptography.Click on "Install Package".When installing Python modules in PyCharm, make sure that your IDE is configured to use the correct version of Python.Click on "File" > "Settings" > "Project" > "Python Interpreter".Then Select the correct Python version from the dropdown menu.Your IDE should be using the same version of Python (including the virtual environment) that you are using to install packages from your terminal.You can use the python --version command if you need to get your version ofPython.Copied!python --versionpython3 --version# Install Cryptography in AnacondaTo install cryptography in Anaconda:Open your Anaconda Navigator.Click on "Environments" and select your project.Type cryptography in the search bar to the right.Tick the cryptography package and click on "Apply".Alternatively, you can install the cryptography package with a command.If you are on Windows, search for "Anaconda Prompt" and open theapplication.If you are on macOS or Linux, open your terminal.Run the following command to install the cryptography package.Copied!# 👇️ Using condaconda install -c anaconda cryptography# 👇️ Alternatively use `pip`pip install cryptography# 👇️ For Python 3pip3 install cryptography# 👇️ If you get a permissions errorsudo pip3 install cryptography# 👇️ If you don't have pip in your PATH environment variablepython -m pip install cryptography# 👇️ For Python 3python3 -m pip install cryptography# 👇️ Using py aliaspy -m pip install cryptography# 👇️ Alternative if you get a permissions errorpip install cryptography --userIf you also use the paramiko package, makesure to install it as well.Copied!pip install paramikopip3 install paramikopython -m pip install paramikopython3 -m pip install paramiko# 👇️ For Anacondaconda install -c anaconda paramikoClick on thefollowing articleif you need to install a specific version of the package using Anaconda.# Install cryptography in Jupyter NotebookTo install cryptography in Jupyter Notebook:Open your terminal and type "jupyter notebook".Click on "New" and then "Terminal" in the browser tab.Type pip install cryptography and press Enter.Copied!# 👇️ Using pippip install cryptography# 👇️ For Python 3pip3 install cryptography# 👇️ If you get a permissions errorsudo pip3 install cryptography# 👇️ If you don't have pip in your PATH environment variablepython -m pip install cryptography# 👇️ For Python 3python3 -m pip