secret writing
Encoded private communication
Secret writing is communication designed to conceal its message from unintended readers.
The term covers codes, ciphers, invisible inks, and other methods of hiding meaning: The spy used secret writing to pass information.
It appears in espionage contexts and children's games alike.
- invisible inkHidden writing fluid
- microdotShrunk photo for espionage
- cipherHidden writing system
- steganographyHiding data within media
- encryptionConverting data into code
Caesar cipher · cryptanalysis · wax seals · substitution cipher · end-to-end encryption · key · acrostic · watermarking · codebreaking · code · decoder ring · embedding · dead drop · classified · concealed · scrambled · puzzle · spy
- cryptic puzzlesriddle, cipher, code, cryptogram, enigma
- puzzles & codescryptogram, codes, puzzles, ciphers, anagrams
- secret codescipher, code word, password, passphrase, coded messages
- cipherscipher, Caesar cipher, substitution cipher, ciphertext, plaintext
- cryptographyAES, encryption, ciphertext, decryption, cipher
secret writingplaintext
Unencoded readable information
plain text · cleartext · open communication · clear text · open letter
secret, writing, cryptic, cryptography, cryptology, cryptozoology, cryptographic, cryptographer, cryptologist