The crypto/rand package in Go implements the cryptographically secure random numbers. There are three functions in this package in total that we are going to cover here in this post. To use this package we will import it and also import the math/big package for big numbers that will be used in the int method.
Why do we use the crypto/Rand package to seed the default source?
Here we use the crypto/rand package to seed the math/rand default source because unless you really need cryptographically secure randomness it's much better to just use the math/rand package but if we want different numbers each time the program is run we need to seed properly. @JohnLeidegren You might want to update your comment.
Which package Rand implements a cryptographically secure random number generator?
Package rand implements a cryptographically secure random number generator. This section is empty. var Reader io. Reader Reader is a global, shared instance of a cryptographically secure random number generator. On Linux, FreeBSD, Dragonfly, NetBSD and Solaris, Reader uses getrandom (2) if available, /dev/urandom otherwise.
