Free encryption software for laptops software for windows

Public Key File and Email Encryption Freeware for personal use only Deltacrypt OneClick Public Key File and Email Encryption Software application featuring RSA protection in its public keys, encryption and public key integrity protection with hashing functions and digital signatures.
Deltacrypt OneClick lets the user create and distribute public keys. Its unalterable Deltacrypt public key files prevent man-in-the-middle attacks where key interception and substitution is at the heart of such attack.
The Deltacrypt application is brute-force attack resistant by simulating decryption process in real decryption time when used with a false private key. All Deltacrypt Encryption applications provide OneClick set of commands for encryption and decryption is just a click. A OneClick creation feature walks the user each step of the way into command creation. No special skills required.
It encrypts binary units of information therefore it can cipher any file formats with its 768-character key and has no encryption volume limitation. The Delete Option offered by the OneClick Encryption Software fills original source files with random characters before wiping them out.
Source files become illegible if recuperated. At decryption, Deltacrypt reconstructs files identical to the original ones: same name, same time and same size. This flexible encryption program is constructed modularly facilitating its integration and use within existing environment.
Multiple plug-ins may easily be added on to meet any special requirements. The Deltacrypt File and Email Encryption Software comes in a self-executable file and is menu-driven. It is packaged in Dynamic Linked Library(dll) and only requires about 800 kb. of memory space.
Main features:
- Basic Public Key File Encryption
- Email & Text Encryption
- OneClick Commands
- RSA Protection
- Wipe Out of Original Source Files
- Encryption of Any File Format
- For Personal Use ONLY
- Runs on all versions of Windows
- No technical support
Version restrictions:
- Our freeware version is available for non-commercial use for any length of time

Passware Encryption Analyzer 1 is developed as a versatile program with which you can verify that you still have passwords for your important files. It is a free encryption scanning tool that finds password-protected or encrypted files on a PC. Are you sure that you remember passwords for all of your files? Do you use passwords that are easy to recover? Are your important files as secure as you think? Get a free check of this. Full system scan usually takes under an hour and can be run in the background.

If you need to unprotect your file, Encryption Analyzer runs the required password recovery module automatically. Enjoy the easy-to-use, explorer-like interface with all the necessary options at hand.

One-step email encryption plug-in for MS Outlook 97/98/2000 (not Outlook Express). This handy little program gives you the option to encrypt your outgoing messages with just one click! And your recipient does not need any special software -- just the password. This Ad-enabled freeware version uses the well-documented blowfish algorithm with 56-encryption. The upgrade to the full versionincludes stronger 192-bit encryption and advanced features such as automatic encryption password management. Alsoavailable is an enterprise version with centralized administration features, including key recovery.

The Audio/Video encryption SDK is able to protect your Audio/Video files in a safe way The Audio/Video encryption SDK is able to protect your Audio/Video files in a safe way.
It includes a DirectShow Filter for on the fly decryption, an encrypter and some example codes for developers.