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VB and JavaScript code which validates 10 and 13 digit ISBN, and converts between ISBN-10 and ISBN-13 (only ISBN-13 beginning with 978 can be converted to ISBN-10). May be useful during the January 2007 world-wide changeover to ISBN-13.
This is a collection of vb class modules written in native Visual Basic. They provide the following functionality: Processing of very large integer numbers, hashing algorithms, prime number handling and an implementation of the RSA algorithm.