Encryption & Decryption script. PHP Forums on Bytes. 423,211 Members 861 Online. I get bored last night and wrote a script that uses xor for encrypt-decrypt. 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.

Hp Photosmart 5510 Series Offline Printer. The binary operation XOR (stands for eXclusive OR) is a binary operand (as are AND, OR, etc) from Boole algebra. This operand will compare two bits and will produce one bit in return. That bit will be equal to 1 if the two compared bits were different, 0 if they were equal. Xor encryption is commonly used in several symmetric ciphers (especially AES). A symetric cipher is simply a cipher in which the key is used for encryption and decryption process.

The XOR operand is so applied to each bit between the text you want to encrypt and the key you'll choose. Examples are better than words, let's take the word 'xor'. We want to encrypt it with the key 'cle'. First we have to convert the input and the key in binary representation: xor: 011110 cle: 011111 Then we compare each bit with the XOR operand. Which will give you this: xor: 011110 cle: 011111 000001 If we wanted to go back to the original input ('xor'), we would just have to reapply the XOR between the output and the key. Hp Color Laserjet Cm2320nf Mfp Driver Windows 7 here. You can note that XOR is a commutative function, as multiplications.