Does anyone have an encryption routine that can take any string and encrypt it into a string that contains only numbers and capital letters (e.g., DHSK3J641GA)
I do not want to use a Hex representation because these strings may be somewhat long and a Hex representation will only make it longer. The encrypted string will be given to customers over the phone so I need to avoid complex strings with lower-uppercase issues and any special characters. This is for licensing an application. The encrypted string will contain information used by the program.