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Bob believes that he has come up with a nifty hash function. He assigns a numeric value VChar to each letter in the alphabet equal to the letter's position in the alphabet, i.e., VA = 1, VB = 2, ..., VZ = 26. For a message, he calculates the hash value H = (VChar 1 x VChar 2 x VChar 3 ...x VChar N) mod(26). Bob uses this function to send a one-word message, PANEL, to his banker Bill, along with his calculated hash value for the message. Alice is able to intercept the message, and generates an alternative message that has a hash value that collides with Bob's original hash value. Show a message that Alice may have spoofed, and demonstrate that its hash value collides with Bob's original hash.
Va = 1 H= (16 * 1 * 14 * 5 * 12) mod 26Vb = 2 p a n e lVc = 3Vd = 4Ve = 5Vf = 6Vg = 7Vh = 8Vi = 9Vj = 10Vk = 11Vl = 12Vm = 13Vn = 14Vo = 15Vp = 16Vq = 17Vr = 18Vs = 19Vt = 20Vu = 21Vv = 22Vw = 23Vx = 24Vy = 25Vz = 26
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