Write a computer program for a block cipher that encrypts 64-bits blocks by XORing every block with key xFFF44FF00F44400F. Hint: If the cleartext has a block that is less than 64bit, stuffing the rest of the bits in the block such that the resulting code is x00 for each character. For example, you can XOR x04 with x04 to get x00. You don't need to write program to decrypt the ciphertext.
Please I need this ASAP before 12AM EST 10/27/15.
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