To decrypt / decipher an encoded message, it is necessary to know the encryption used (or the encoding method, or the implemented cryptographic principle). Without knowing the technique chosen by the sender of the message, it is impossible to decrypt it (or decode it).
Definition of decipher verb from the Oxford Advanced Learner's Dictionary. decipher something to convert something written in code into normal language. They were able to decipher the French military codes. She quickly deciphered the whole message.
If you decipher a piece of writing or a message, you work out what it says, even though it is very difficult to read or understand. I'm still no closer to deciphering the code. [VERB noun]
1. to make out the meaning of (something obscure or difficult to read or understand): I couldn't decipher his handwriting. 2. to interpret by the use of a key, as something written in cipher: to decipher a secret message. 3. Obs. to depict; portray.
DECIPHER is used by the clinical community to share and compare phenotypic and genotypic data. The DECIPHER database contains data from 51,743 patients who have given consent for broad data-sharing; DECIPHER also supports more limited sharing via consortia.
(transitive) To find a solution to a problem. decipher (plural deciphers) I enclose a letter which I received yesterday evening from the Marques de Monsalud, containing the decipher of a letter from the King to the Comte d'Erlon. I wish that the Marques had sent the ciphered letter here […]
Tool for encoding and decoding with the Caesar cipher, a simple and famous shift cipher that replaces each letter with another one further down the alphabet. Compatible with ROT13 and other variants.
1. to make out the meaning of (something obscure or difficult to read or understand): I couldn't decipher his handwriting. 2. to interpret by the use of a key, as something written in cipher: to decipher a secret message. 3. Obs. to depict; portray.