hime huge integer math and encryption 2.05

HIME is a Huge Integer Math and Encryption library.

HIME stands for Huge Integer Math and Encryption library.
It is a collection of functions for Windows programmers that allows to implement RSA public key encryption, AES (Rijndael) secret key encryption and digital signatures using the SHA-256 Secure Hash Algorithm in your programs.

HIME also contains functions for huge prime number generation, cryptographically secure random number generation (a.o. Blum-Blum-Shub and RSA) and huge integer number mathematical operations.

These mathematical functions can serve as building blocks for implementing other public key encryption schemes.

A huge integer number in HIME can be hundreds of thousands of digits long; 2^31 (2147483648) bits long to be exact. Thats over 268 MILLION digits! (In contrast, a strong 512-bit encryption key is just 64 digits).

HIME is a dll, so every programming language that can access a dll can use HIME: C, C++, Visual Basic, Delphi, PowerBASIC, PureBASIC, Euphoria, Java,...

HIME comes with demo and test programs (including their source code) to show HIMEs performance and as an example of how to use HIME.

A demo program in Visual Basic 5/6 is also included.

HIME was written in PowerBASIC and inline assembler.

Here are some key features of "HIME Huge Integer Math and Encryption":

· It is a cryptography toolkit for Windows programmers that allows to implement public key encryption, secret key encryption, data security and digital signatures using one of the many one-way secure hash functions in your programs.
· Public (asymmetric) key encryption and digital signatures with RSA ; standard version or the CRT (Chinese Remainder Theorem) version.
· Secret (symmetric) key encryption with AES (Rijndael) in 3 different block cipher modes or ArcFour (RC4 compatible) (**).
· Hash functions: SHA-512, SHA-256, SHA-1, MD5, CRC32 (**).
· HIME also contains functions for huge prime number generation and cryptographically secure random number generation (a.o. Blum-Blum-Shub and RSA). True random number data can be retrieved from an internet server.
· The Diffie-Hellman key exchange algorithm to securely exchange session keys.
· HIME has compression and decompression functions with multiple compression algorithms to choose from.
· HIME is thread-safe (re-entrant) for use in multi-threaded applications or concurrent environments.
· HIME has functions for easily handling data, arranged as records with fields.
· HIME has functions for converting data between various formats: huge integer, Base64, decimal, hex, ascii binary.
· HIME has functions for securely erasing disk files.
· HIMEs huge integer number mathematical, bit manipulation and boolean functions can serve as building blocks for implementing other public key encryption schemes or performing math calculations with arbitrary precision.
· A huge integer number in HIME can be hundreds of thousands of digits long; 2^31 (2147483648) bits long to be exact. Thats over 268 MILLION digits!
· HIME is a 32 bits dll, so every programming language that can access a standard Win32 dll can use HIME: C, C++, C#, Visual Basic, Delphi, PowerBASIC, PureBASIC, Euphoria, Java, Macromedia Director (with GLU32)...
· .NET (dot NET) languages can use HIME as an unmanaged code dll.
· HIME comes with demo and test programs (including their source code) to show HIMEs performance and as an example of how to use HIME.
· Demo programs in Visual Basic 5/6, Delphi and PureBasic are also included.
· HIME was written in PowerBASIC (*) and inline assembler.

Encryption and Decryption Pro description
A strong text and file encryption software for personal and professional security Encryption and Decryption Pro allows you to protect the privacy of your email messages, documents and sensitive files by encrypting them with AES 256-bit key encryption algorithm to provide high protection against unauthorized data access.

For more security you can use multiple encryption. Once the information has been encrypted, you shouldnt worry your information can be seen by others - you can safely send/receive encrypted messages over the Internet, share private information with your friends, family, co-workers, store your data on your PC or transmit it over the Internet.

Encryption and Decryption Pro has built-in advanced password generator and password keeper that provide an easy way to generate strong passwords and keep passwords and associated information (login, username, web site) in a safe and secure way.

Safely send sensitive messages and files over the Internet
Sending sensitive messages, documents and files over the Internet is very dangerous as all emails are transmitted in an unsecured form. So anybody - ISP, your boss, etc. can read your emails. Even if you connect to your server and send your emails via SSL, it only means that your emails cant be seen while transmitting between you and your server. When your email reaches your server it can be seen by your email service provider. Then your server usually sends your email to the recipient in an unsecured way and your email can also be easily seen by anyone.

If you need to send important information over the Internet you should definitely encrypt it first. Encryption and Decryption Pro allows you easily encrypt and decrypt your messages and files. Now you can send emails and files from home or office in a safe way. If you need to send sensitive information via email, simply paste the encrypted text into your email or attach the encrypted file to your email and all the recipient has to do is to decrypt your text or file.

Safely store sensitive information on your PC
Encryption and Decryption Pro is very useful for storing private documents and files on your PC. Encryption and Decryption Pro works with both - text information and files. Just select what you want to encrypt, and Encryption and Decryption Pro helps you keep documents, private information and files in a confidential way.

Here are some key features of "Encryption and Decryption Pro":

· Encrypt text (text encryption)
Encryption and Decryption Pro is secure and reliable way to protect your text messages. It encrypts your messages using AES 256-bit key encryption (AES encryption) to provide high protection against unauthorized data access.

· Helps you safely send private information to your friends, family and co-workers
Sending sensitive messages, documents and files over the Internet is very dangerous. If you need to send sensitive data over the Internet you should encrypt it first. Encryption and Decryption Pro allows you to send and receive private messages securely. If you need to send sensitive information via email, simply paste the encrypted text into your email and all the recipient has to do is to decrypt your text or file into its original form.

· Encrypt files
Encryption and Decryption Pro enables you to encrypt and decrypt files of any type and size*, on any kind of drive, on both local and network resources. Encryption and Decryption Pro encrypts your documents and files using AES 256-bit key encryption. Your encrypted document can be easily decrypted when you (or your recipient, if you are sending your document to someone else) enter the password to decrypt the document and click "Decrypt" button.
* Maximum size of the file you can encrypt is 2 GB

· Safely store sensitive information on your PC
Encryption and Decryption Pro is secure and reliable way to protect your data. Just select what you want to encrypt, and Encryption and Decryption Pro helps you keep documents, private information and files in a confidential way.

· No backdoors
Encryption and Decryption Pro has no "back doors". The only way to access the data encrypted by Encryption and Decryption Pro is to have the correct password. If you forgot or lost lo your password, there is no way to decrypt your information.

· Satisfy all security requirements for a wide range of users
Encryption and Decryption Pro is developed for a wide range of users who want to protect different kinds of information, keep and transfer private information in a secure way and restrict access to personal data for unauthorized users. Encryption and Decryption Pro is very easy to use but it provides high security and satisfies all security requirements for a wide range of users - from people who send emails from their home PC to advanced users.

· Advanced password generator
Using Encryption and Decryption Pro you can easily generate really random passwords of any length. Just click the "Generate Password" button and the program will generate a random password according to the criteria you specify.
Encryption and Decryption Pro uses Universal Random Number Generator (URAND) subroutine for generating random passwords. Universal Random Number Generator (URAND) is a subroutine for generating uniformly-distributed floating-point numbers in the interval (0,1). URAND is guaranteed to have a full-length cycle. Randomness of generated passwords makes them hard to guess. You can set password length in "Password length" field.

· Password keeper
Using Password keeper module you can keep your passwords and any associated information in safe and secure manner. Every time you create a new password, you can easily save it. No matter how many different passwords and usernames/logins you have, they can be safely stored using Password Keeper. Stored passwords database is encrypted using AES 256-bit key encryption.

· Start with Windows
If you want Encryption and Decryption Pro starts with Windows, select Start with Windows option. By default, this option is on.

· Protect Encryption and Decryption with password
This feature allows you to protect the program from unauthorized access with password.

· Run Encryption and Decryption in invisible mode
Using Run Encryption and Decryption in invisible mode feature you can hide program from Task bar and hide programs tray icon from the tray menu - so nobody knows you are using the program.

LangPad - Math & Currency Characters provides and easy way to insert Math & Currency characters and symbols into your WordPad and Notepad text. Click the mouse on a character or symbol in the chart, and it will be inserted into your text.

Nautical Calculator provides an array of powerful functions for those learning marine navigation or want to reduce the amount of pencil and paper math and increase reliability and accuracy of their calculations when planning a voyage. Versions are included for both Windows and Pocket PC. The same registration key activates both versions.

Features:

Easy to use

Pocket PC compliant user interface. Intuitive, clean, and professionally designed to speed up usage and minimize typing.

Night Vision Friendly (Pocket PC version)

Choose from three night settings: white, red or green on a black background. These settings provide for the retention of your night vision.

Lat/Lon from Coordinate, Bearing and Distance

A destination coordinate can be determined if you know the starting coordinate, the true bearing and the distance.

Bearing and Distance Between Two Coordinates

Enter an origin and destination coordinate and see what the initial true bearing and distance are.

Determine Set and Drift

Enter your deduced reckoning (DR) position and your actual position and let Nautical Calculator compute the set and drift.

Course to Steer

Enter your desired course, planned speed, the set and drift and let Nautical Calculator determine your course to steer (CTS) and speed made good (SMG).

Distance and Speed Calculations

Standard distance and speed calculations.

ETE and ETA

If you know the distance to be traveled and the speed, you can determine the estimated time enroute (ETE) and the estimated time of arrival (ETA). Of great benefit is the display of days, hours and minutes for ETE and date and time for ETA.

Distance to Horizon and Feature

When making a passage, it is sometimes useful to know how far out you will be able to see landfall. Knowing your elevation above the water and the height of the distant feature, Nautical Calculator can easily determined this.

Lat/Lon Conversions

Convert between a number of different real world coordinate formats (degrees, degrees/minutes, degrees/minutes/seconds).

Time Calculations and Conversions

Convert 12 hour to 24 hour format. Add and subtract hours and minutes up to 24 hours. Result displayed simultaneously in both local and Greenwich time.

Distance Units Conversions

Convert between nautical miles, statute miles, meters, yards, feet, fathoms and even leagues.

Chronometer

Greenwich time is displayed in big numbers. Also included are: an elapsed time count up function useful for keeping track of time since the last fix or waypoint, and an alarm count down timer to let you know when your preset time period has expired (i.e. expected arrival time at a waypoint or destination).

Sun/Moon Rise/Set

Shows the times for sunrise, sun transit and sunset for any day. Provides three twilight start and end times: civil, nautical and astronomical. Also shows the moons rise and set times. Times can be shown in either local or Greenwich time.

Moon Phase

A calendar with the phases of the moon for each day is displayed. The New, Full and even Blue moon dates are highlighted.

Beaufort Scale

To facilitate understanding of weather reports which include a Beaufort Scale value, this screen provides descriptions for both at sea and on land for the full range from calm (0) to hurricane (12).

Whats new in this release:

· Nominated for Best Software Award 2005 Nautical Calculator now supports square, portrait and landscape in 240x240, 240x320, 320x240, 320x320, 480x480, 480x640 and 640x480 display resolutions. Improvement have also been made to make the functions easier to use.

Encryption and Decryption description
A text encryption freeware that allows you protect the privacy of your email messages Encryption and Decryption encrypts your messages with AES 256-bit key encryption algorithm to provide high protection against unauthorized data access.

Once the information has been encrypted, you shouldnt worry your information can be seen by others - you can safely send/receive encrypted messages over the Internet to share private information with your friends, family, co-workers.

Why you need Encryption and Decryption

Sending sensitive messages over the Internet is very dangerous as all emails are transmitted in an unsecured form. So anybody - ISP, your boss, etc. can read your emails. Even if you connect to your server and send your emails via SSL, it only means that your emails cant be seen while transmitting between you and your server. When your email reaches your server it can be seen by your email service provider. Then your server usually sends your email to the recipient in an unsecured way and your email can also be easily seen by anyone.

If you need to send sensitive messages or important information over the Internet you should definitely encrypt it first. Encryption and Decryption allows you easily encrypt and decrypt your messages. Now you can send emails from home or office in a safe way. If you need to send sensitive information via email, simply paste the encrypted text into your email and all the recipient has to do is to decrypt the text.

Here are some key features of "Encryption and Decryption":

· Encrypt text (text encryption)
Encryption and Decryption is secure and reliable way to protect your text messages. It encrypts your messages using AES 256-bit key encryption (AES encryption) to provide high protection against unauthorized data access.

· Helps you safely send private information to your friends, family and co-workers
Sending sensitive messages, documents and files over the Internet is very dangerous. If you need to send sensitive data over the Internet you should encrypt it first. Encryption and Decryption allows you to send and receive private messages securely. If you need to send sensitive information via email, simply paste the encrypted text into your email and all the recipient has to do is to decrypt your text or file into its original form.

· No backdoors
Encryption and Decryption has no "back doors". The only way to access the data encrypted by Encryption and Decryption is to have the correct password. If you forgot or lost lo your password, there is no way to decrypt your information.

· Satisfy all security requirements for a wide range of users
Encryption and Decryption is developed for a wide range of users - from people who send emails from their home PC to advanced users.

· Start with Windows
If you want Encryption and Decryption starts with Windows, select Start with Windows option. By default, this option is on.

· Protect Encryption and Decryption with password
This feature allows you to protect the program from unauthorized access with password.

· Run Encryption and Decryption in invisible mode
Using Run Encryption and Decryption in invisible mode feature you can hide program from Task bar and hide programs tray icon from the tray menu - so nobody knows you are using the program.

Math::BigRat package arbitrary big rational numbers.

SYNOPSIS

use Math::BigRat;

my $x = Math::BigRat->new(3/7); $x += 5/9;

print $x->bstr(),"n";
print $x ** 2,"n";

my $y = Math::BigRat->new(inf);
print "$y ", ($y->is_inf ? is : is not) , " infinityn";

my $z = Math::BigRat->new(144); $z->bsqrt();

Math::BigRat complements Math::BigInt and Math::BigFloat by providing support for arbitrary big rational numbers.

MATH LIBRARY

You can change the underlying module that does the low-level math operations by using:

use Math::BigRat try => GMP;

Note: This needs Math::BigInt::GMP installed.
The following would first try to find Math::BigInt::Foo, then Math::BigInt::Bar, and when this also fails, revert to Math::BigInt::Calc:

use Math::BigRat try => Foo,Math::BigInt::Bar;

If you want to get warned when the fallback occurs, replace "try" with "lib":

use Math::BigRat lib => Foo,Math::BigInt::Bar;

If you want the code to die instead, replace "try" with "only":

use Math::BigRat only => Foo,Math::BigInt::Bar;

Pretty Good Encryption description
Pretty Good Encryption offers you a PowerBasic and assembly encryption program Pretty Good Encryption offers you a PowerBasic and assembly encryption program. Military Grade Type Encryption.

P-Encyption Lite is a free program which allows you to encrypt your private files into one encrypted file(archive). P-Encryption Lite can also encrypt/decrypt text. P-Encryption Lite uses AES encryption to encrypt files and blowfish encryption to encrypt text. P-Encryption Lite is CadabraSoftwares freeware alternative to P-Encryption Suite.

Math Flight - children can now have fun while learning & practicing basic math! Race against a jet as you answer math questions and travel around the world discovering new countries.

Math Flight is an educational software that helps you to learn mathematics.

Activities drill addition, subtraction, multiplication, division, or mix-up the questions. High score hall of fame, display and prints report cards, print math fun question papers.

Focus on a specific troublesome numbers, multiple user levels, adjust flight speed up to Mach 1.

Detailed data log to track learning progress, youth/adult mode, positive and negative numbers. Try out the Math Scramble and Math Join activities. Create voice(wav) sounds for correct/incorrect answers or use the default sounds.

Great for children, even adults wanting to brush up on basic arithmetic. Improve math marks at school by taking a trip on Math Flight!

Limitations:

· 15 day trial

Come And Go Encryption provides an encryption program based off one-time pads.

Cum And Go Encryption is a very basic program to encrypt or decrypt a program using a variant of the one-time pad. This allows for almost uncrackable encryption.

Why is it still crackable? The program uses one relatively small key to XOR the contents of another file, encrypting it.

A one-time pad uses a very large key (about the same size as the file/data to encrypt) and is completely random. Still, the encryption is good enough to mask the identity of a program or document, or stop someone from accessing that document or program.

The origins of this program were an effort to stop a specific kind of movie and image from being viewed normally.

Installing is a breeze: simply run the program. Put it anywhere you like, it wont matter as long as you put the full path to the program to encrypt/decrypt.

Run the program to see a basic description of its use.

This program works very well in windows but was designed for use in Linux/UNIX. The stdout option allows for decryption to standard output, allowing one to pipe the programs decrypted data to another program.

This could be used to view an encrypted movie without having to write the whole movie to disk; the only problem with this is that on some Operating Systems pipes are slow and inefficient, especially with a high-bitrate movie. Steps will be taken to speed this up in the future.

Whats New in This Release:

· Fix password use so the password is not shown in "encrypted" files
· Use an actual encryption method, and not a cheesy XOR
· Adapt CAG to use modules such as SHA, Crypt, MD5, and others