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 …
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Secret Writing | Encyclopedia.com
WEBSecret writing is any means of written communication whereby a spy conceals the actual written text, whether it is enciphered/encoded or not.
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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 …
Revealing all: A history of secret writing | New Scientist
WEBBy Caroline Morley. 9 July 2014. New York, 1942: checking mail for anything that might aid the enemy (Image: Bettmann/Corbis) A history of secret messages that runs from lemon …
Steganography - Wikipedia
WEBSteganography ( / ˌstɛɡəˈnɒɡrəfi / ⓘ STEG-ə-NOG-rə-fee) is the practice of representing information within another message or physical object, in such a manner that the …
Cryptography/Introduction - Wikibooks, open books for an open …
WEBThe 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 …
After 200 years, a glimpse into The Art of Secret Writing
WEBSecret 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 …
The ancient art of hidden writing - BBC News
WEBThe 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 …
The Spymaster's Toolkit - CIA
WEBSecret Writing. Revolutionary War: American agents serving abroad composed their intelligence reports using invisible ink. George Washington believed this would “not only …
Deeper meaning: Ciphers reveal more than hidden messages
WEBAn expert in the history of secret writing, Dr. Katherine Ellison unlocks literary history by deciphering the messages hidden in encrypted writing.
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