Make Hex File

[couttsj]

I found a need to use data samples in Hex format that were created using "C" based programs. The problem I ran into was the fact that they used lower case characters (eg 5a) and VB used upper case characters (eg 5A). Manually editing this information proved to be time consuming and prone to errors, so I made the attached program to do the job.

As an example, the samples provided by https://tls13.xargs.org/ range from:

202122232425262728292a2b2c2d2e2f303132333435363738393a3b3c3d3e3f

to

16 03 03 00 7a 02 00 00 76 03 03 70 71 72 73 74 75 76 77 78 79 7a 7b 7c 7d 7e 7f 80 81 82 83 84 85 86 87 88 89 8a 8b 8c 8d 8e 8f 20 e0 e1 e2 e3 e4 e5 e6 e7 e8 e9 ea eb ec ed ee ef f0 f1 f2 f3 f4 f5 f6 f7 f8 f9 fa fb fc fd fe ff 13 02 00 00 2e 00 2b 00 02 03 04 00 33 00 24 00 1d 00 20 9f d7 ad 6d cf f4 29 8d d3 f9 6d 5b 1b 2a f9 10 a0 53 5b 14 88 d7 f8 fa bb 34 9a 98 28 80 b6 15

Samples using space separators are much easier to read, but using no spaces is much quicker to convert to byte format.

To use this simple program, paste the string information into the upper text box. If the sample contains no spaces, the program will automatically convert lower case characters to upper case, add space separators, and display the result without spaces in the lower text box.

If the sample already contains spaces, the case conversion is done in the upper text box, and clicking the "Remove Spaces" transfers that information to the lower text box without spaces in a more convenient width.

To add that information to a file, use the "Save as File" button to enter the file name and path. By default, a ".hex" extension is added to the file name, and the file path is the current path. Files are created using File API calls.

J.A. Coutts