Bytes returns n number cryptographically secure random bytes from /dev/random.

Getrandom obtains a series of random bytes by filling buffer buf.

Int returns a random int.

Intn return a random int in the half-open interval [0,n).

String generates cryptographically **NOT** secure a random string from chars with length l.

Flags for Getrandom().

Flags for Getrandom().

Flags for Getrandom().