Mike's Toolbox

Engineering a New Economy

Learn how we should operate the economy to reverse the trend of continuously increasing debt for the government and American households, and return prosperity to the poor and middle classes. All federal taxes should be eliminated and replaced by a simple low-percentage sales tax which eventually can be reduced to just 2%!


Mathematics and Finance

To the right are some tutorials that attempt to make some important math and finance topics easier to understand.

Hopefully you will be able to follow the explanations, but if not, please send an email to the address below to let me know what difficulties you encounter.

Scientific Calculator

Here is a fully functional scientific calculator implemented entirely in HTML, CSS, and JavaScript. See the calculator instructions for help in using it. You can easily embed the calculator in your own page, or create a link to a pop-up calculator.

Mortgage Calculator

Here is a mortgage calculator implemented entirely in HTML, CSS, and JavaScript.

Transport Layer Security

TLS, formerly known as Secure Socket Layer (SSL), is the technology that keeps the Internet secure. If you are developing TLS client software, you can verify that it works correctly by connecting to my test server:

TLS versions 1.0, 1.1, and 1.2.
1024-bit Diffie-Hellman parameters.
Asks for a client certificate.

TLS versions 1.0, 1.1, and 1.2.
2048-bit Diffie-Hellman parameters.

TLS Versions and Extensions supported by both servers:

TLS Version 1.0   RFC 2246
TLS Version 1.1 RFC 4346
TLS Version 1.2 RFC 5246
Server Name Indication RFC 4366
Maximum Fragment Length RFC 4366
Truncated HMAC RFC 4366
Session Tickets RFC 5077
Signature Algorithms RFC 5246
Renegotiation Info RFC 5746
Encrypt-then-MAC RFC 7366
TLS Fallback Prevention SCSV RFC 7507
ClientHello Padding RFC 7685

Note: you will get security warnings if you connect with a normal browser since the server uses its own root certificate.

Contacting Mike of Mike's Toolbox

Please send comments and suggestions to:  mikestoolbox@pobox.com