Ciphertext

As a ciphertext (also cipher, cipher, ciphertext, ciphertext, cryptogram, cipher text or cipher text ) is called in cryptography, the text was changed by encryption using a cryptographic method and using a key such that it is no longer possible, its contents to understand.

Using a secret key, a ciphertext can be converted back into the original plaintext. This process is called decryption.

The set of all ciphertexts generated by encrypting plaintexts a plaintext space, the ciphertext space.