cryptological

/ˌkrɪptəˈlɑːdʒɪkəl/
adjective
  1. Relating to the study or science of codes, ciphers, and secret writing.
    • The cryptological research led to a new way to protect digital messages.
    • She wrote a book about cryptological methods used during World War II.
    • The puzzle required cryptological thinking to decode the hidden message.
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