Tool to decrypt / encrypt by dictionary. Word substitution encryption is about replacing one letter with one word and not another letter.
Word Substitution - dCode
Tag(s) : Substitution Cipher
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The principle of the dictionary cipher is to replace any letter / character, by a word according to a correspondence dictionary.
Thus, any sentence (or sequence of words) can correspond to a coded message.
Example: WORD can be encrypted short sequence of letters, with a dictionary where W=short, O=sequence, R=of and D=letters
A variant is to use a dictionary where each letter is coded by a word starting with it.
Decryption by dictionary consists of replacing each word by the letter that has been associated with it in the dictionary (during encryption).
The encrypted message is much longer than the plain message (since it replaces one character with several ones).
A talented person will be able to hide the words of the message inside an intelligible text. This is the case of the Ave Maria of Tritheme, where the messages resemble religious prayers.
Otherwise, the message is simply a series of words without any sense.
It is conceivable to use several words for the same letter / character, which makes decryption very difficult, like a book cipher.