| Encryption is the process of storing
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| | is a block cipher adopted as an
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| information in a way so as to make it
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| | encryption standard by the US government.
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| unreadable without special knowledge.
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| | Rijndael is used worldwide and analysed
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| Encryption has been used to protect
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| | extensively. Rijndael became effective as
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| communications and secure information for
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| | a standard May 26, 2002. As of 2006,
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| centuries, but only organizations and
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| | Rijndael is one of the most popular
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| individuals with an great need for
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| | algorithms used in symmetric key
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| secrecy had made use of it.
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| | cryptography.
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| Julius Caeser is the first known user of
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| | The cipher was developed by two Belgian
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| an encryption system. His system was
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| | cryptographers, Joan Daemen and Vincent
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| known as Caeser's keys. He wanted to send
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| | Rijmen, from whose surnames the term
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| messages, but did not want the messengers
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| | Rijndael was conceived. The cipher was
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| to read them. To prevent this, he used an
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| | submitted to the AES selection process,
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| alphabetic substitution in his messages;
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| | stating that Rijndael was designed based
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| replacing "A" with "D", "B" with "E", "C
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| | on the following three criteria:
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| with "F", etc. The recipient of the
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| | 1) Resistance against all known attacks
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| message was aware of the secret of the
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| | 2) Speed and code compactness on a wide
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| encryption, so for him it was very
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| | range of platforms
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| straightforward to decipher the message.
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| | 3) Design simplicity
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| An example of a sentence using Caeser's
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| | Rijndael was evaluated by the National
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| keys is below. It is not difficult to see
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| | Security Agency (NSA), based on its
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| the pattern.
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| | security, its cost and its algorithm and
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| Plain Text: THE QUICK BROWN FOX JUMPED
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| | implementation characteristics. There
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| OVER THE LAZY DOG
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| | were several candidate algorithms, but
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| Cipher Text: WKH TXLFN EURZQ IRA MXPSHG
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| | Rijndael was selected as it had the best
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| RYHU WKH ODCB GRJ
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| | combination of security, performance,
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| Obviously, this method of encryption is
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| | efficiency, ease of implementation and
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| not very secure. Though encryption has
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| | flexibility. NSA stated that Rijndael was
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| been around for thousands of years, only
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| | secure enough for US Government
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| in the last century have we seen great
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| | non-classified data. In June 2003, the US
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| advancement in the field of cryptography.
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| | Government announced that Rijndael may be
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| The invention of computers changed the
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| | used for classified information.
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| face of cryptography completely.
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| | It is the mark of good quality software
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| Computers were able to calculate much
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| | if it uses the Rijndael encryption method
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| faster than the people who worked on
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| | to secure information.
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| them, and suddenly an encrypted message
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| | One such program is Info Manager.
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| could be broken within a few minutes on a
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| | PortaWhiz Info Manager uses the Rijndael
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| normal PC, and consequesntly the message
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| | encrytion method to keep your information
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| was no longer secure. In response to the
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| | secure. The program gives you one place
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| need for new and secure methods of
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| | on your Pocket PC your desktop where you
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| encryption, the cryptographic world
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| | can organize and store all of your
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| flourished in the latter part of the 20th
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| | important information into neat folders.
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| century. In the mid-1970s, strong
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| | This means that all your important
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| encryption emerged from the preserve of
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| | information is stored together, in neat
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| secretive government agencies into the
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| | and tidy bundles; which are easy to
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| public.
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| | retrieve at any time you require. Only
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| In cryptography, the Advanced Encryption
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| | the bearer of the administrator password
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| Standard (AES); also known as Rijndael,
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| | will then possibly be able to access it.
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