Reciprocal cipher
Encyclopedia
A reciprocal cipher means, just as one enters the plaintext
into the cryptography
system to get the ciphertext
, one could enter the ciphertext into the same place in the system to get the plaintext. Sometimes also referred as self-reciprocal cipher.
Examples of reciprocal ciphers are:
Plaintext
In cryptography, plaintext is information a sender wishes to transmit to a receiver. Cleartext is often used as a synonym. Before the computer era, plaintext most commonly meant message text in the language of the communicating parties....
into the cryptography
Cryptography
Cryptography is the practice and study of techniques for secure communication in the presence of third parties...
system to get the ciphertext
Ciphertext
In cryptography, ciphertext is the result of encryption performed on plaintext using an algorithm, called a cipher. Ciphertext is also known as encrypted or encoded information because it contains a form of the original plaintext that is unreadable by a human or computer without the proper cipher...
, one could enter the ciphertext into the same place in the system to get the plaintext. Sometimes also referred as self-reciprocal cipher.
Examples of reciprocal ciphers are:
- Beaufort cipherBeaufort cipherThe Beaufort cipher, created by Sir Francis Beaufort, is a substitution cipher that is similar to the Vigenère cipher but uses a slightly modified enciphering mechanism and tableau....
- Enigma machineEnigma machineAn Enigma machine is any of a family of related electro-mechanical rotor cipher machines used for the encryption and decryption of secret messages. Enigma was invented by German engineer Arthur Scherbius at the end of World War I...
- ROT13ROT13ROT13 is a simple substitution cipher used in online forums as a means of hiding spoilers, punchlines, puzzle solutions, and offensive materials from the casual glance. ROT13 has been described as the "Usenet equivalent of a magazine printing the answer to a quiz upside down"...
- XOR cipher