Whether it's verifying the integrity of a message's source, a software license file, or a download, employing digital signatures is imperative.
By Joe Cropper
So just what is a digital signature anyway?
A digital signature is the digital era's equivalent of yesterday's hand-written signature. That is, each time we sign that receipt after using our debit or credit card, we are effectively telling our financial institution that we agreed to pay a given price for a given item. In the event that an alleged fraudulent charge is made, authorities can perform signature comparisons to help determine the validity of the claim. Digital signatures work in a similar fashion for electronic messages.
If you've been putting off learning Java, you have no excuse anymore!
By Joe Pluta
Java for RPG Programmers has been popular for nearly a decade. This unique book manages to bridge the gap between the procedural nature of RPG and the sometimes mysterious world of Java and object-oriented programming (OOP). This Third Edition is a worthy entry in the book's history.
The problem for RPG programmers is that most Java books don't differentiate between application programming and system programming. Java has a dual nature: Java experts use the advanced features of the language to build system-level routines, and application programmers use those routines to build applications. Most RPG programmers need the latter explained in familiar terms.
