Chilkat is a cross-language, cross-platform API providing 90+ classes for many Internet protocols, formats, and algorithms.

Products
POP3 / SMTP
Zip, GZip, Bz2, .Z Compression
Data Compression
TAR Archive
FTP2
IMAP
Encryption
RSA Encryption and Signatures

Best selling POP3/SMTP email .NET component for C#, VB.NET, and ASP.NET. Best selling Zip .NET component for C#, VB.NET, and ASP.NET. HTTP client component for communicating with HTTP servers.

C#, VB.NET, ASP.NET, ASP, VB6, FoxPro, VBScript, Delphi, SQL Server, C/C++, Objective-C, Swift, Xojo, Node.js, C++ Builder, Powershell, Perl, PHP, Ruby, Java, Python, Lianja, PureBasic, all languages supporting ActiveX (such as PowerBuilder, DataFlex, etc.).

Encrypt your private data. Steganos Safe is a standalone module of Steganos Security Suite, designed for users who want or need strong data encryption for their laptops and PCs. Steganos Safe is an intuitive piece of kit that you can use to create safes on your computer, in order to protect sensitive data from pry eyes. It particularly comes in handy if you share the machine with other people.

One of the drawbacks of surfing online is the possibility of losing personal data. VPN service providers strive to solve this issue and one of these is CyberGhost. Based on the OpenVPN protocol with SSL encryption, it enables you to navigate on the Internet, using a secure virtual private network. Thus, data transfers, user actions and the location address are concealed, allowing you to surf anonymously.

Encrypt your private data. Steganos Safe is a standalone module of Steganos Security Suite, designed for users who want or need strong data encryption for their laptops and PCs. Steganos Safe is an intuitive piece of kit that you can use to create safes on your computer, in order to protect sensitive data from pry eyes. It particularly comes in handy if you share the machine with other people.

ActiveZip for ActiveX lets you add high-speed, reliable, zip/unzip functionality to your applications regardless of whether you are manipulating files or memory. The comfortable object oriented class structure will allow you to work quickly and easily regardless of your project's complexity.

Mandatory are file to be signed (To be signed)
and the two keys: publicKey and private key,
you can easy generate public key from private key
using "From PrivKey" button of PublicKey section,
there is no way in hell you can get private key from public key,
RSA 1024 is commonly used and sometimes (not often) even RSA 2048.
Rest of informations are optional and will be filled with some default values.

Best selling POP3/SMTP email .NET component for C#, VB.NET, and ASP.NET. Best selling Zip .NET component for C#, VB.NET, and ASP.NET. HTTP client component for communicating with HTTP servers.

C#, VB.NET, ASP.NET, ASP, VB6, FoxPro, VBScript, Delphi, SQL Server, C/C++, Objective-C, Swift, Xojo, Node.js, C++ Builder, Powershell, Perl, PHP, Ruby, Java, Python, Lianja, PureBasic, all languages supporting ActiveX (such as PowerBuilder, DataFlex, etc.).