ASP Classic - convert base64binary string to byte array

Question

Hello,

I am trying to convert a base64binary string to a byte array in classic ASP. StrConv() doesn't exist in ASP.

My objective is to take the base64binary string received from a web service call, and write the binary format to a file.

thanks,
-m

Answer 1

When faced with a similar situation some time ago, I used MSXML to convert the data to a byte array before saving it to a file. You will need version 3 or higher.

To do this you would:

• Load the data with MSXML
• Set the node's dataType property to bin.base64
• Read the binary data from the node using the nodeTypedValue property
• To save the file you can use the ADODB.Stream component.

A few links on how the to this are below.

http://ghads.wordpress.com/2008/10/17/vbscript-readwrite-binary-encodedecode-base64/

http://support.microsoft.com/kb/254388

http://www.motobit.com/tips/detpg_binasp/