Lattice based cryptography: How do negative coefficients in $Z_q[x]/(X^n+1)$ work?
64179
What is the difference between the standard representants of $\mathbb Z/q\mathbb Z$?
103854
Showing that $Q_n=D_n+D_{n-1}$
103578
Affine cipher : Why it is required to have GCD(a, m) equals to 1
151961
Irreducibility of $x^{p(p-1)}+x^{p(p-2)}+\cdots+x^p+1$ over $\mathbb Q$
152297
Understanding quotients of $\mathbb{Q}[x]$
59432
Why does error propagation in CBC mode encryption affect two blocks?
129930
A problem on chinese remainder theorem (CSIR NET DEC 2015)
114578
Design properties of the Rijndael finite field?
43003
lcm versus phi in RSA
667
Why use $(r,s)$ instead of $(r,s^{-1})$ as DSA signature?
124901
Big-O notation and polynomials
111491
Affine Cipher Cryptanalysis
117484
Why is $c+q$ still a primitive root modulo $q$?
9213
Attacks of the MAC construction $\mathcal{H}(m\mathbin\|k)$ for common hashes $\mathcal{H}$?
84315
Why can't polynomials have negative exponents or division by a variable
55689
Why are the Davies-Meyer and Miyaguchi-Preneel constructions secure?
42213
Computing $\text{Gal}(\mathbb{Q}^{ab}/\mathbb{Q})$