BCArchive 1.06 - Datei-Verschlüsselungsprogramm
Name: BCArchive Grösse: ~ 3MB Homepage: http://www.jetico.com/ Downloadlink: http://www.jetico.com/bcarchive.exe Screenshot: http://www.jetico.com/images/bca_screenshot.gif Standalone? Nein Sprache: Englisch Beschreibung: Sehr nettes Verschlüsselungsprogramm, es nistet sich ins Kontextmenü ein und es lassen sich Dateien wie auch Ordner verschlüsseln. Es stehen verschiedene Verschlüsselungsmethoden zur Auswahl, die Daten können auch zusätzlich komprimiert werden. Interessant ist das Feature Public- und Securekeys zu erzeugen und zu verwalten. Alles in allem macht das Programm einen brauchbaren Eindruck, wollen wir mal hoffen, daß es nicht irgendwann in Shareware umgewandelt wird. The BCArchive software is designed to compress a group of files/folders to a single encrypted file. Please read about the tasks BCArchive helps to solve in the section When BCArchive can be of use to you. To read about BCArchive functions and supported standards & specifications please go to BCArchive characteristics. When BCArchive can be of use to you. Compression utilities such as Zip, Arj, RAR and many others are really helpful in saving hard disk space. However, in many cases the data we compress is private. The question of privacy is even more important when we wish to send compressed data over insecure Internet connections. There are powerful encryption algorithms and technologies that can help people keep their private data in a secure form. But it is important: a) to use the right tool for the job; b) that at every stage in the process of securing the data, - standard algorithms (with an established powerful capability) are used; c) that the risk of improper use of encryption by inexperienced people is minimized. Using BCArchive is very simple yet very secure. Let's say you want to back up some data and store it as compressed, encrypted archive on your hard drive. All you need to do is specify a password for the archive when you create it and enter the same password to decrypt and extract the data. This simple process requires no special knowledge of encryption. BCArchive uses powerful algorithms, such as IDEA and Blowfish to encrypt the data and the PKCS #5 standard for derivation encryption key from the password string. Beware of trusting your data to less sophisticated encryption programmes because the archives they create can often be cracked with a simple freeware utility. Use Public Keys to send an encrypted archive. Avoid the need for a Password. Public/Secret key pair is a pair of sequences of bytes that is generated according to the specification of asymmetric encryption algorithm (like RSA) and used to encrypt/decrypt data. Public key is not a secret and can be sent to you in any way. The owner of a public key will also have a corresponding secret key, which the owner alone knows. Where your recipient owns a public/secret key pair, - you can use the public key to encrypt an archive instead of using a password. Once you have encrypted the archive file with the public key, it can only be decrypted by your recipient using his/her corresponding secret key. This technology is used in widely known Pretty Good Privacy software (PGP) and a number of specifications and standards were issued to make using the technology as secure as possible. Use self-extracting archives. Avoid the need for installing BCArchive by your recipient. By using a Public/Secret key you avoid the risks associated with transmitting the password to your recipient, but your recipient would need compatible software to decrypt the data you send. Unless you correspond regularly, it's very unlikely that this situation would exist and who wants the inconvenience of installing yet another bit of software just to read one bit of information? BCArchive overcomes this difficulty by offering you the facility to create a "self-extracting" file. Data is compressed and encrypted to a single archive file, which is converted to an executable program. At any time thereafter you or your recipient can run the program on any computer and extract the data without installing any special software! BCArchive characteristics. BCArchive software helps to solve the tasks discussed in the chapter When BCArchive can be of use to you above. The software allows the user to: * Create compressed and encrypted archive file protected by password. * Create compressed and encrypted archive file encrypted using the public key of another user. * Add a number of passwords to an existing archive file. * Apply more than one public keys to an archive file enabling a number of users to decrypt the archive. * Generate new or use existing secret/public key pairs in PKCS-12/X.509 format. * Compress and encrypt data to a self-extracted executable program. The user can run the program and extract the data even on a computer where BCArchive is not installed. BCArchive utilizes the following encryption algorithms, standards and specifications: * Symmetric algorithms: Blowfish, IDEA, Triple-DES and CAST5. * Secure Hash Algorithms: SHA-1, MD5 and RIPEMD-160. * Asymmetric (public/secret key pair) algorithms: RSA, ElGamal / Diffie-Hellman. * Specifications for public/secret key pair format: PKCS #12, X.509. * PKCS #5 (recommendations for the implementation of password-based cryptography). * RFC 2440 specifications for session keys encrypted by symmetric or public key encryption algorithms. BCArchive is compatible with established standards and specifications. It enables the use of existing public key databases, such as those created for PGP software, which have been used world-wide for many years.