Cryptography is the art or science of decoding coded messages. Even if you intercept a note from one of your siblings to the other, it's going to require cryptography to decipher it.

When you practice cryptography, you're an expert at both composing and unraveling messages that are written in some kind of code to ensure their privacy. In the old days, cryptography meant translating text into illegible nonsense that could only be understood by the recipient, and then decoding it using a code key or instructions. Today, most cryptography involves supercomputers and math. The Greek roots are kryptos, "hidden," and graphia, "writing."

Definitions of cryptography
  1. noun
    the science of analyzing and deciphering codes and ciphers and cryptograms
    synonyms: cryptanalysis, cryptanalytics, cryptology
    see moresee less
    type of:
    science, scientific discipline
    a particular branch of scientific knowledge
  2. noun
    act of writing in code or cipher
    synonyms: coding, secret writing, steganography
    see moresee less
    show 6 types...
    hide 6 types...
    encoding, encryption
    the activity of converting data or information into code
    converting from one code to another
    decipherment, decoding, decryption
    the activity of making clear or converting from code into plain text
    encoding information while reducing the bandwidth or bits required
    restoring compressed information to its normal form for use or display
    data encryption
    (computer science) the encryption of data for security purposes
    type of:
    committal to writing, writing
    the activity of putting something in written form
Word Family