_____ cipher operates by reordering the plaintext symbols.

Keep practicing — related questions

• ______ cipher operate(s) by replacing each symbol or a group of symbols in the plain text by other symbols.
• In ____________________ substitution, a character in the plain text is always changed to the same character...
• In cryptography, the plain text is encrypted to get _____ text.
• Which of the following can be considered as a block cipher?
• What is the process of replacing some characters with others in an encryption key?
• _____________ is an algorithm for encryption developed by Ron Rivest, Adi Shamir and Len Adleman.
• In cryptography, original unenciphered text is called _____ text.
• A cryptographic system that uses different keys for encryption and decryption is said to be _____.