Do you need a preset fixed length of digits sequence?
or just random digits...?
26 random numbers could be translated into letters
For a 26 digit random sequence of numbers only
make an Array 26 X by 1Y in size
make a series of events
Array for Each X Element--> Array Push Front random(0,25) on X axis
This would push 26 random numbers into an array
from here you could get these values and use them how ever you like
Creating a second random numerical Array with any number of random values from (0,9)
would give you the raw data you need for Numbers....
you could also create a algoryhtm that once the random array is created
then use the Array to take random data samples from the Same Array X Elements determined by the listed or ordered numerals stored in the array
so for like
after generating and populating the Array with all of its random numbers stored into each X element
you could then get the first value at X and then use that to take another number from the element value it represents
so if X1 happens to be a "6"
you would then get the Value stored at element 6 and use that as the random multiplyer for anything you like or just take its raw value because its already random from its initial generation
you could transpose alphabet letters onto the Random Values how ever you like
once example would be
and so on
but you could also reverse it or "shift" the sequence along as many values as you like
even determined by the first value in the cypher key stored at any position on the Array you like
This is the basis of cryptographic keys
shown here in one example of many such possibilities
only you know which Value is the key and its position can also be stored by another random number assigned to a X value..
here is a random number and letter generator I made ages ago
it might help you somehow
hope that helps