![]() Both key strengths provide significantly better security than standard ZIP 2.0 encryption. Each encryption key size causes the algorithm to behave slightly differently, so the increasing key sizes not only offer a larger number of bits with which you can scramble the data, but also increase the complexity of the cipher algorithm.īitZipper supports 128- and 256-bit encryption keys, which is the two key strengths supported by WinZip 9. The AES algorithm uses one of three cipher key strengths: a 128-, 192-, or 256-bit encryption key (password). Government (NSA) announced that AES is secure enough to protect classified information up to the TOP SECRET level, which is the highest security level and defined as information which would cause "exceptionally grave damage" to national security if disclosed to the public. The winning algorithm, Rijndael, was developed by two Belgian cryptologists, Vincent Rijmen and Joan Daemen.ĪES provides strong encryption and has been selected by NIST as a Federal Information Processing Standard in November 2001 ( FIPS-197), and in June 2003 the U.S. It was the result of a worldwide call for submissions of encryption algorithms issued by the US Government's National Institute of Standards and Technology (NIST) in 1997 and completed in 2000. AES is a symmetric key encryption technique which will replace the commonly used Data Encryption Standard (DES). AES encryptionĪES stands for Advanced Encryption Standard. All ZIP-tools support this encrypton scheme and can be used to unzip your protected files, but you should not rely on this protection scheme to protect sensitive data. This protection scheme is rather weak and tools that can 'recover' (crack) these passwords exist. Encryption schemes supported by BitZipperīitZipper 4.1 and newer supports two encryption schemes, ZIP 2.0 encryption and AES encryption:Īlso known as standard password protected ZIP-files. In this case the key is the password you supply when adding files to your ZIP-file - to unzip the file the same password must be supplied. In traditional encryption schemes, the sender and the receiver use the same key to encrypt and decrypt data. To decipher the message, the receiver of the encrypted data must have the proper decryption key (password). BitZipper will not only compress and decompress files for you, it will also encrypt it with strong AES encryption!Įncryption is the process of changing data into a form that can be read only by the intended receiver. ![]()
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