ASCII Shift Cipher

The ASCII table is composed of 128 characters, as for the Latin alphabet and the Caesar code, it is possible to shift the characters of a rank $ N $ to obtain another character.

Encryption considers the ASCII alphabet to be cyclic (moving after the end of the alphabet returns to the beginning) and uses a $ N $ value called offset, ranging from 1 to 127 (negative numbers are possible, this amounts to an offset in the other direction).

Example: A (ASCII code 65) shifted by $ N = 40 $ becomes the ASCII code $ 65 + 40 = 105 $ or i (ASCII code 105).

The ASCII code includes non-printable characters, which dCode prints ' ', use decimal or hexadecimal formats to avoid losing information on the display.

The decryption of an ASCII offset is identical to the encryption but with a shift in the other direction (the equivalent is an encryption with a negative offset).

Example: The encrypted message SeU[[qUaVW shifted from $ N = -18 $ decodes 'ASCII_CODE'

The message is composed only of ASCII characters.

Frequency analysis should emphasize groups of characters more often (those corresponding to the letters of the plain message).

dCode allows you to test the 127 offsets and displays the most probable results automatically.

The shift ciphers are numerous, the most known is the Caesar cipher.