Tool to decrypt/encrypt in Base 26. Base 26 uses 26 symbols, by using the alphabet's letter, one can encrypt words with numbers and conversely.

Base 26 Cipher - dCode

Tag(s) : Cryptography,Mathematics

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Tool to decrypt/encrypt in Base 26. Base 26 uses 26 symbols, by using the alphabet's letter, one can encrypt words with numbers and conversely.

Encryption uses a simple base 26 conversion using alphabetic characters as symbols

When want to code DCODE, one have to consider that is written in base 26

By converting in base 10 : D=3, C=2, O=14, D=3, E=4 so 3*26^4 + 2*26^3 + 14*26^2 + 3*26^1 + 4*26^0 = 1415626

Decryption consists in converting base 10 to base 26 but using the 26 characters of the alphabet as symbols

1415626 = 3*26^4 + 2*26^3 + 14*26^2 + 3*26^1 + 4*26^0 = [3, 2, 14, 3, 4] in base 26 and 3=D, 2=C, 14=O, 3=D, 4=E

The original plain text is DCODE.

The ciphered message is made of numbers, relatively big (for long words)

Usual word can appears multiple times with the same value in a long text.

Rather than converting normally, the word can be considered backward :

DCODE = 3*26^0+2*26^1+14*26^2+3*26^3+4*26^4 = 1890151

as A is encoded 0 in base 26, when encoding it is null and disappear when decoding.

AB = 0*26^1+1*26^0 = 1 and 1 = B

One can add a zero at the beginning of a number to denote a A.

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base,base26,26,hexavigesimal,modulo,alphabet,number,word

Source : http://www.dcode.fr/base-26-cipher

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