Caesar cipher
[ˈsiːzər ˈsaɪfər]
nounpl: Caesar ciphers
cifra de César
1. A substitution cipher in which each letter in the plaintext is shifted a fixed number of places down or up the alphabet
The Caesar cipher is one of the simplest and most widely known encryption techniques in cryptography.
A cifra de César é uma das técnicas de criptografia mais simples e conhecidas.
2. A cryptographic method historically attributed to Julius Caesar, typically using a shift of three positions
Julius Caesar reportedly used a Caesar cipher with a shift of 3 to protect his military messages.
Júlio César supostamente usava uma cifra de César com um deslocamento de 3 para proteger suas mensagens militares.
The Caesar cipher holds significant historical and educational importance in both American and Brazilian computer science curricula. It serves as an introductory example for teaching cryptography concepts. While historically attributed to Julius Caesar, it is now considered a basic cipher with minimal practical security applications due to its vulnerability to frequency analysis attacks. The term is used identically in both Portuguese and English-speaking academic communities.
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