WARNING: sodium_memcmp() must be used to verify if two secret keys
are equal, in constant time (if array's length are equal).
If array's length are NOT equal, the decision is solely based on that,
i.e. no constant time guarantee and the function returns false.
This function is not designed for lexicographical comparisons.
Preferably use this function with equal length arrays.
Constant-time test for equality
WARNING: sodium_memcmp() must be used to verify if two secret keys are equal, in constant time (if array's length are equal). If array's length are NOT equal, the decision is solely based on that, i.e. no constant time guarantee and the function returns false. This function is not designed for lexicographical comparisons. Preferably use this function with equal length arrays.