Is $H(k \operatorname\| H(k \operatorname\| m))$​ with double length $k$ like NMAC?
15473
Why does HMAC use two different keys?
18540
Isomorphism from $\mathbb{C}[G]$ to $\prod_{i=1}^h M_{n_i}(\mathbb{C})$.
17191
How to verify $H\otimes K \cong \bigoplus\limits_{i\in I}H$
49294
prove that $\operatorname{lcm}(n,m) = nm/\gcd(n,m)$
3902
Does $k+\aleph_0=\mathfrak{c}$ imply $k=\mathfrak{c}$ without the Axiom of Choice?
65971
Double dual mappings
73790
Are two Hilbert spaces with the same algebraic dimension (their Hamel bases have the same cardinality) isomorphic?
23579
If $G$ is isomorphic to $H$, then ${\rm Aut}(G)$ is isomorphic to ${\rm Aut}(H)$
39755
In a faithfully flat ring extension, is $\operatorname{ht}I=\operatorname{ht}IS$ right?
89533
$\mathcal{K}(L^2(\mathbb{R}^m \times \mathbb{R}^n)) = \mathcal{K}(L^2(\mathbb{R}^m)) \otimes \mathcal{K}(L^2(\mathbb{R}^n))$?
72871
How to construct semi direct products between Q and H
34712
Decomposable elements of $\Lambda^k(V)$
120035
Pattern in Isomorphisms between $\mathbb Z_m \times \mathbb Z_n$ and $\mathbb Z_{mn}$
117476
Isometries between dual factor space and annihilator
122853
Show that $\operatorname{rank}(A) = \operatorname{rank}(B)$
109267
Describe explicitly $\operatorname{Hom}_{\mathbb{Z}}(\mathbb{Z}_n, \mathbb{Z}_m)$.
82788
Direct summand of a free module