Definitions for "Deciphering"
Conversion of ciphertext back into plaintext
The procedure of turning enciphered text into plain text with prior knowledge of the algorithms or keys involved. This is what the intended message receiver does.
The translation of encrypted text or data (called ciphertext) into original text or data (called plaintext). See also: Decryption
Using knowledge about graphophonemic relationships to sound-out regular words. Some argue this is accomplished through a process known as "reading by analogy."