Tool to decrypt/encrypt with XOR automatically. XOR Cipher is a cryptographic method developed with computers. Is consists in encrypting a binary message with a repeated key using a XOR multiplication.

XOR Cipher - dCode

Tag(s) : Cryptography

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Tool to decrypt/encrypt with XOR automatically. XOR Cipher is a cryptographic method developed with computers. Is consists in encrypting a binary message with a repeated key using a XOR multiplication.

XOR Encryption uses the XOR operator (Exclusive Or, symbol : ⊕) with the plain text and the key as operand (that should be binary encoded).

Example: The plain message is 1001 and the key is 10

Take the first bit (0 or 1) of the plain text and the first bit of the key and multiply then using XOR operation to get the ciphered bit.

Example: 1 ⊕ 1 = 0

The operation is repeated with the second bit of the plaintext and the second bit of the key. At the end of the key, loob back to the first bit.

Example: 0 ⊕ 0 = 0, puis 0 ⊕ 1 = 1 puis 1 ⊕ 0 = 1. The ciphered message is 0011.

XOR Decryption is identical to encryption because the XOR operation is symmetrical.

Example: 1001 ⊕ 1010 = 0011 and 0011 ⊕ 1010 = 1001

A | B | A xor B |
---|---|---|

0 | 0 | 0 |

0 | 1 | 1 |

1 | 0 | 1 |

1 | 1 | 0 |

A XOR ciphered message has no particularities, this makes it hard to detect. It can be presented under binary form but also as ascii text.

Xor decryption without key is hard. It is possible to find all or a part of the key by knowing a part of the plain text. Else, there are no practical methods other than trying all the keys.

XOR is comptabile with the principle of an Autoclave ciphering.

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Source : https://www.dcode.fr/xor-cipher

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