- Only Parts C And D Please 1 (136.52 KiB) Viewed 25 times
Only parts c and d please!!
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answerhappygod
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Only parts c and d please!!
Only parts c and d please!!
= = = Alice and Bob agree to use the elliptic Diffie-Hellman key ex- change with the prime p = 2671, elliptic curve E: Y2 = x3 + : 171X + 853, and point P = (1980, 431) E E(Fp). (a) Alice sends to Bob the point QA = (2110,543). Bob decides to use the secret multiplier nb 1943. What point should Bob send to Alice? (b) What is their secret shared value? (c) How difficult is it for Eve to figure out Alice's secret multi- plier na? (Try to find it using PARI.) (d) Alice and Bob decide to exchange a new piece of secret infor- mation using the same prime, curve, and point. This time Alice sends Bob only the x-coordinate xa = 2 of her point QA. Bob Qa decides to use the secret multiplier nb 875. What single num- ber modulo p should Bob send to Alice, and what is their secret shared value? = =
= = = Alice and Bob agree to use the elliptic Diffie-Hellman key ex- change with the prime p = 2671, elliptic curve E: Y2 = x3 + : 171X + 853, and point P = (1980, 431) E E(Fp). (a) Alice sends to Bob the point QA = (2110,543). Bob decides to use the secret multiplier nb 1943. What point should Bob send to Alice? (b) What is their secret shared value? (c) How difficult is it for Eve to figure out Alice's secret multi- plier na? (Try to find it using PARI.) (d) Alice and Bob decide to exchange a new piece of secret infor- mation using the same prime, curve, and point. This time Alice sends Bob only the x-coordinate xa = 2 of her point QA. Bob Qa decides to use the secret multiplier nb 875. What single num- ber modulo p should Bob send to Alice, and what is their secret shared value? = =
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