(Excel) Fortuna PRNG Generate Random Encoded

Demonstrates how to generate random bytes using the Fortuna PRNG. The random bytes are returned in an encoded string (using an encoding such as hex, base64, base58, etc.)

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' All Chilkat classes can be unlocked at once at the beginning of a program
' by calling UnlockBundle.  It requires a Bundle unlock code.
Dim chilkatGlob As Chilkat.CkGlobal
Set chilkatGlob = Chilkat.NewCkGlobal

success = chilkatGlob.UnlockBundle("Anything for 30-day trial.")
If (success <> True) Then
    Debug.Print chilkatGlob.LastErrorText
    Exit Sub
End If

Dim fortuna As Chilkat.Prng
Set fortuna = Chilkat.NewPrng

' Before beginning to generate random data, 
' the PRNG (Pseudo Random Number Generator) should
' be seeded with real random data (also known as "entropy").

' Note: Accumulating real random data can be difficult
' and time-consuming to collect.  It is for this reason
' that pseudorandom data (i.e. a PRNG) is used.  The pseudorandom data generator
' is seeded with entropy.  In addition, new entropy can (and should)
' be periodically added as more pseudorandom data is generated.

' Get 32 bytes of system entropy.  On Linux/Unix systems, this reads
' from /dev/random.  On MS Windows systems, it uses the Crypto API's 
' CryptGenRandom function.

strEntropy = fortuna.GetEntropy(32,"hex")
If (fortuna.LastMethodSuccess <> True) Then
    Debug.Print fortuna.LastErrorText
    Exit Sub
End If

' Seed the PRNG with this entropy:
success = fortuna.AddEntropy(strEntropy,"hex")
If (success <> True) Then
    Debug.Print fortuna.LastErrorText
    Exit Sub
End If

' Generate some random data:

strRandHex = fortuna.GenRandom(16,"hex")

strRandBase64 = fortuna.GenRandom(22,"base64")

strRandBase58 = fortuna.GenRandom(32,"base58")

Debug.Print "hex random bytes: "; strRandHex
Debug.Print "base64 random bytes: "; strRandBase64
Debug.Print "base58 random bytes: "; strRandBase58