Monthly Archives: June 2020

Steganography: from its origins to the present

Steganography: from its origins to the present

The term steganography refers to a technique that aims to hide communication between two interlocutors. The term is composed precisely of the Greek words στεγανός (covered) and γραφία (writing). Unlike encryption, which allows you to encrypt a message so as to make it incomprehensible if you do not have a key to decipher it, steganography aims to keep the very existence of the message away from prying eyes, by hiding it. The origins Traces of steganography already existed in ancient Greece, when Herodotus narrated two examples in his Stories, but the first recorded use of the term was in 1499 by Johannes Trithemius in his Steganographia, a treatise on cryptography […]

War and cryptography: the challenge of quantum communication

War and cryptography: the challenge of quantum communication

Message encryption has always been a very important tool within the military, stretching back to the time of the ancient Greeks to the present day. It is natural for two armies in war to seek information about each other, both to learn about enemy strategies before battle, as well as to discover its movements during it. In order to obtain this information, “cryptoanalysis” was born, that is the study of decrypting encrypted messages without knowing their encryption key. It is easy to assume that if an army, through cryptoanalysis, manages to decipher the enemy’s communications, it can gain a fundamental strategic advantage. To be precise, it must be specified that […]

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