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Why use cyclotomic polynomials for RLWE?

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This paper On Ideal Lattices and Learning with Errors Over Rings proposed RLWE which is Ring and hence efficient version of LWE problem. My question is that they considered cyclotomic polynomials for modulus. I am not sure why cyclotomic polynomials are used and what extra advantage we get by using them?

Hilder Vitor Lima Pereira avatar
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There was a question about this few days ago. [This answer](https://crypto.stackexchange.com/questions/100211/rlwe-explanation/100218#100218) may be helpful.
Maarten Bodewes avatar
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Could you please indicate in how far the linked to Q/A is helpful? Please indicate what is missing, otherwise this question may get closed as a duplicate.
mangohost

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