An article describing what AES-encryption is about for a general audience, Acrobat Reader required.

Axantum-Strong-Licensing.pdf

A white paper describing the implementation and tools for building cryptographically strong software licensing codes and schemes based on shortened elliptic curve signatures. Acrobat Reader required

These are small utilities, but fairly useful - and can be used to check the MD5 checksums provided for software distributions. But more interestingly, it implements a very, very fast file copier specifically optimized for RAID and SAN environments where there are many active disks making up a single logical volume. It uses asynchronous I/O to schedule the number of simultaneous requests that you specify, using the buffer size that you specify. With correct parameters it can speed up file copying speed in such environments significantly compared to drag and drop in Windows or COPY or XCOPY. As an extra bonus the MD5 checksum can be calculated on the fly, and optionally used to verify the file actually written to the destination.

To make it easy to use, the same program comes in three flavors, depending which name is used to invoke it. So the three versions below are the exact same binary executable, but the name determines the operating mode and default options selected.

These are command line utilities, just type the program name to find out the full set of options available.

AxCopySum.cpp

The full source code, in a single C++ source file for Visual Studio.

AxCopySum.exe

Defaults to copy files very quickly, optionally calculating MD5 and optionally verifying the copy

AxSumCopy.exe

Defaults to calculate the MD5 of a single file with no copying done

AxSum.exe

Defaults to just display the MD5 of one or more files