Assume $n$ parties each has a secret vector $v_i$,How to compute the value of $\sum v_i$ correctly without disclosing the secret vectors under the malicious adversary model?
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$\begingroup$ Hint: the sum of vectors is a vector which coordinates are obtained by summing the respective coordinates of each vector, thus the problem reduces to summing coordinates. $\endgroup$– fgrieu ♦Commented Nov 14 at 8:41
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$\begingroup$ thank you! so is there any solution to summing coordinates? $\endgroup$– Rui T.Commented Nov 14 at 8:56
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$\begingroup$ When coordinates are bounded integers, see this related question. $\endgroup$– fgrieu ♦Commented Nov 14 at 12:14
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