Definition, Meaning & Synonyms

cypher

noun
/ˈsaɪ.fər/
Definition
A method of transforming a message to keep its content secret.
Examples
  • The spy communicated using a complex cypher to encrypt his messages.
  • They learned to decipher the ancient texts that were written in a forgotten cypher.
  • Modern apps often use cyphers to secure user data and communications.
Meaning
In the context of cryptography, a cypher is a system or set of rules used to encode or decode information, ensuring that only those with the right keys can access the original message.
Synonyms
  • code
  • cipher
  • encryption
  • key
  • secret writing