Mathematics Stack Exchange is a question and answer site for people studying math at any level and professionals in related fields. It only takes a minute to sign up.
Sign up to join this community
I came across the following expression: $[m + 2r + 2\sum_{i \in S}{x_i}]_{x_0}$. What does the subscripted bracket notation mean?
Context: Found in this paper https://eprint.iacr.org/2009/616.pdf. Page 6, Section 3.1, in description of "Encrypt" function.
In section 2, the paper gives this definition:
