Random number/letter generator

[tshad]

Is there a good random number/letter generator out there?

I just want to be able to generate a password that has letters and or
numbers about 10 characters long.

Thanks,

Tom

[Kevin Spencer]

How about System.Random?

--
HTH,

Kevin Spencer
Microsoft MVP
..Net Developer
What You Seek Is What You Get.

"tshad" <ts**********@ftsolutions.com> wrote in message
news:ue**************@TK2MSFTNGP10.phx.gbl...

Is there a good random number/letter generator out there?

I just want to be able to generate a password that has letters and or
numbers about 10 characters long.

Thanks,

Tom

[Brock Allen]

> How about System.Random?

I don't think this implementation is sufficient for cryptographic purposes.
Check out System.Security.Cryptography.RandomNumberGenerator and the RNGCryptoServiceProvider
implementation.

-Brock
DevelopMentor
http://staff.develop.com/ballen

[tshad]

"Brock Allen" <ba****@NOSPAMdevelop.com> wrote in message
news:66**********************@msnews.microsoft.com ...

How about System.Random?
I don't think this implementation is sufficient for cryptographic
purposes. Check out System.Security.Cryptography.RandomNumberGenerator and
the RNGCryptoServiceProvider implementation.

I'll check that out.

What I came up with temporarily was:

************************************************** ********
Function RandomNumber(min as Integer, max as Integer) as integer
Dim random as Random = new Random()
RandomNumber = random.Next(min, max)
End Function

Function RandomString(size as integer, lowerCase as boolean) as string
Dim builder as StringBuilder = new StringBuilder()
Dim random as Random = new Random()
Dim i as integer
dim ch as char

for i = 0 to size -1
ch = Convert.ToChar(Convert.ToInt32(25 * random.NextDouble() + 65))
random.NextDouble()
builder.Append(ch)
next
if(lowerCase) then RandomString = builder.ToString().ToLower()

RandomString = builder.ToString()
end function
************************************************** **************

I would then do the following:

Dim builder as StringBuilder = new StringBuilder()
builder.Append(RandomString(6, false))
builder.insert(3,RandomNumber(0, 10))

password1.text = builder.ToString()

This seems to do what I want, at least for now.

Thanks,

Tom
-Brock
DevelopMentor
http://staff.develop.com/ballen