Caesar cipher is a very simple encryption method and is easily cracked if one studies the frequency of repeating letters. To improve the strength of the encryption method a more complex key could ...

to the fourth round of its post-quantum cryptography (PQC) competition has been successfully cracked by researchers at the Catholic University if Leuven in Belgium using a simple CPU. Last month ...

Its simplicity and its cryptographic strength compared to simple substitution and Vigènere (a polyalphabetic substitution cipher) made it an immediate success as a field cipher, used by the ...