Best cryptography software for free download

SecureBridge is a library of nonvisual components for Delphi, Delphi for .NET and C++Builder. They provide support for secure connection with remote services using SSH protocol.
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PSM Encryptor is a cryptography and steganography tool. PSM Encryptor will encrypt any group of files (including whole directory structures) but will also disguise the resulting encrypted archive as a working sound or image file. Encrypts video too.
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The Xceed Encryption library allows you to easily add strong encryption and decryption capability to your Windows applications. Supports the latest industry-standard strong encryption algorithms and offers both symmetrical and public-key cryptography
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Advanced File Shredder securely erases files or folders on your PC using seven pass US Government standard wiping and cryptographically strong random number key. Shredded files cannot be restored by any data recovery software.
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Storage Vault is a file protection technology based on usage of RSA keys and ciphering algorithms. A distinctive characteristic of Storage Vault technology is a deep integration with operating system so no advanced skills except basic skills of working with Windows operating system are required to use the application. The habitual and intuitive user interface of Windows Explorer provides transparent work of Storage Vault application. The scope of Storage Vault storages usage is pretty wide. It could be used as a personal safe for your digital documents. It also could be used as a secure container to transfer any kind of important digital information through the internet or by other unsafe ways. For example, you can create Storage Vault storage and share a copy of its key with your offshore partners. After that you can exchange important information with your partners through the internet inside the storage and be sure that it is secure and no outsider can access your documents.
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The PSM Decryptor is freeware. It is an entirely graphical utility that sits on your desktop (if you want it too) and decrypts archive. Just drag&drop encrypted archives or keys to the Decryptor box and let go... PSM Decryptor does not encrypt. It is a convenient, fast and gorgeous alternative to using the PSM Encryptor demo or full version to decrypt. If you have the demo version or the full version, just ask your contacts to download PSM Decryptor freeware and send them the keys you want them to have. Right-Click on the decryption box if you need help. That's about as complicated as it gets. PSM Decryptor does not contain advertising, it is 100% spyware free. No data is collected. You don't even need to register or give us an email address to download and use it.
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Hermetic Stego allows you to encrypt and hide a message (the contents of a computer file) in another file so that the addition of the message to the container file will not noticeably change the appearance of that file. If the file which has been hidden is deleted then there is no indication that it even exists, but it can still be recovered when you need to get at it.

This program allows hiding a file of any size in one or more BMP image files, with or without the use of a user-specified stego key, so that (i) the presence of the hidden file is undetectable (even by forensic software using statistical methods) and (ii) if a user-specified stego key is used then the hidden file can be extracted only by someone, using this software, who knows that stego key.

Later versions of most web browsers will display BMP image files, so it is possible to conceal information within a picture on a web page.

Hermetic Stego allows two operations: (i) hiding a message file in single BMP image file or in a set of BMP images and (ii) extracting a message file from a single BMP image file or a set of them.

This program differs from others of this sort in two respects:

1. There is no limit on the size of the file to be hidden because Hermetic Stego can hide a message file, not just in a single BMP image file, but in a set of them -- as many images as needed to contain the message file.

2. The bits of the message are inserted into the bytes of the image files randomly and in such a way as to defeat the use of statistical tests to reveal the presence of a hidden message.

3. The program can be used with a user-specified stego key or with a default stego key; use of a default stego key allows sending a hidden message to another person who does not know what that stego key is.

The stego key (user-specified or default) is used not only to facilitate random selection of bytes for hiding message file bits but also is used to encrypt the message file.
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ABF Password Recovery is a program to retrieve lost or forgotten passwords for many well known programs and popular file formats. All passwords are recovered instantly. Passwords for programs can be recovered for current installation of Windows only. There are some useful tools inside the program, such as: Password picker, Hidden passwords browser, Personal folder recovery. Program interface is customized, so the users can change it, according to their preferences. The current version supports following programs:

MS Internet Explorer - passwords to HTTP protected items and FTP accounts.
MS Outlook Express - passwords to identities; mail, news, and LDAP accounts.
MS Office Outlook - passwords to Personal Folders; mail and LDAP accounts.
MS Office Access - passwords to MDB files.
Total Commander - passwords to FTP accounts.
FAR manager - passwords to FTP accounts.

The number of supported programs and features will be increased in future releases.
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Advanced File Calculator is a cryptographic data hash calculation software for files. Simply drag and drop files in this calculator and hash string for the files will be displayed on the fly. Supported cryptographic hash calculation algorithms include CRC32 control sum, GOST hash, MD2, MD4, MD5, SHA-1, HA2 (256), SHA2 (384), SHA2 (512). You may copy separate hash string corresponding to the file contents data or export them in to text file for future use. This software is capable of up to 1000 concurent hash calculations. Webmasters can also benefot from this utility to calculate and place MD5 hash strings values on their website to verify the integrity of the data.
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Cryptography is that area of expertise which deals with secret writing, the art or science of storing information in a form which hides it from those not meant to see it, yet allows it to be revealed when needed. Cryptosystem ME6 is a software program which encrypts information stored in data files so that it can be read only by someone who knows the encryption key which was used to encrypt that data. The encryption key is a word or phrase given to the program which it uses to scramble the information in a way which is unique for that key. Once encrypted, the data is secure from unauthorized access, since anyone who does not know the key cannot decrypt the data. When Cryptosystem ME6 is used to recover the data the original key must be specified. If the correct key is supplied then the data is restored to its original form.

Cryptosystem ME6 uses a private (or symmetric) key encryption system. Data is encrypted using a key which is a phrase (which can be up to 64 characters long) or a sequence of 64 random bytes. Without this key the encrypted files appear to consist of meaningless bytes and the information in them is safe from prying eyes.

Files are normally compressed before encryption. There is no limit (except available disk space) on the size, the type or the number of files which can be encrypted in a single operation with ME6.

The encryption process in Cryptosystem ME6 uses pseudo-random number generators, a secure hash function (the MD5 Message Digest Algorithm) and plaintext feedback, combined in a way to ensure the security of the encrypted data. Data encrypted using ME6, even when subjected to statistical analysis, appears to consist of random bytes, providing no information.
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