Invisible ink - Wikipedia
WEBInvisible ink, also known as security ink or sympathetic ink, is a substance used for writing, which is invisible either on application or soon thereafter, and can later be made visible by some means, such as heat or ultraviolet light.
Steganography - Wikipedia
WEBSecret messages can be introduced into the least significant bits in an image and then hidden. A steganography tool can be used to camouflage the secret message in the least significant bits but it can introduce a random area that is too perfect.
Revealing all: A history of secret writing | New Scientist
WEBJul 9, 2014 · So what is secret writing? Cryptographers wrestle with messages contained in a sequence of letters, numbers or symbols; detecting secret writing, however, means finding the message in the...
The Codebreakers - Wikipedia
WEBThe Codebreakers – The Story of Secret Writing (ISBN 0-684-83130-9) is a book by David Kahn, published in 1967, comprehensively chronicling the history of cryptography from ancient Egypt to the time of its writing.
Cryptography/Introduction - Wikibooks, open books for an open …
WEBFeb 13, 2023 · The secret knowledge is commonly called the key, though the secret knowledge may include the entire process or algorithm that is used in the encryption/decryption. The information in its useful form is called plaintext (or cleartext); in its encrypted form it is called ciphertext.
After 200 years, a glimpse into The Art of Secret Writing
WEBJun 14, 2011 · Secret writing is a simple method of writing in code. A skilled individual, using this technique, would create what appeared to be an unexceptional document. However, that document might well contain a secret message.
The ancient art of hidden writing - BBC News
WEBJul 2, 2010 · The ancient art of hidden writing. 2 July 2010. Trithemius wrote a long text about the art of hiding messages in text. By Mark Ward. Technology correspondent, BBC News. The arrest of 10 alleged...
Secret Language: Cryptography & Secret Codes | Exploratorium
WEBThe study of enciphering and encoding (on the sending end), and deciphering and decoding (on the receiving end) is called cryptography from the Greek κρυπτός (kryptos), or hidden and γράφειν (graphia), or writing. If you don't know Greek (and not many of us do) the above letters could be a form of code themselves!
Secret Writing | Encyclopedia.com
WEBMay 29, 2018 · Law. Crime and Law Enforcement. Secret Writing. views 2,521,551 updated May 29 2018. Secret Writing. Secret writing is any means of written communication whereby a spy conceals the actual written text, whether it is enciphered/encoded or not.
Deeper meaning: Ciphers reveal more than hidden messages
WEBMar 13, 2024 · Secret writing provides a forum for vulnerability. That’s evidenced, Ellison said, in ciphered communications from Napoleon Bonaparte wherein he privately expressed wartime doubts. It’s also present in the ciphered letters of Charles I, the 17th century king of England, Scotland, and Ireland.
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