The polished black colour of the video starting this page, is a sign of admiration toward the mathematicians of Japan who created the undefeated encryption algorithm Camellia-256. The following sketch illustrates its functions and hardware.

Camellia encryption algorithm, function and hardware, illustrated by Nippon Telegraph and Telephone Corp. and                    Mitsubishi Electric Corporation

An encryption algorithm can be considered secure only after it has resisted multiple deciphering attacks along a long period of time.  On March 10, 2000 Nippon Telegraph and Telephone Corp. and Mitsubishi Electric Corporation published a document, still today a reference, titled:  “Joint Developement of Next-Generation Encryption Algorithm ‘Camellia’ which revolutionized the sector".   The synthesis of this encryption method is shown in the image above. The security of Camellia has been continuously tested over a decade by the cryptography research community.   In the meantime, its capability to withstand newly-found attack techniques, including:

  • related-key; 
  • man-in-the-middle;
  • rebound attacks;

had been investigated and, until 2013, no successful attack reported.  

Camellia's level of security, therefore, surpasses that of AES, which was the subject to successful, but impractical, related-key attack, reported on its 192- and 256-bit versions.   Camellia uses 128-bit ciphers, allowing key sizes of 128, 192 and 256 bits and technically similar to DES-like ciphers. Taking a look on the Privacy Policy web page of the Secure Platform Laboratories of the Nippon Telegraph and Telephone Corp., it is possible to see that Camellia-256 already includes a basic level of 'encryption', being:                                                                                                                       

  • codified in Japanese language;                        
  • rarely used. 

256 bit key is the version our Servers adopt for the protection of all of the e-mail accounts ( * we use in the communication with Visitors and Customers.   More precisely, in the Graphene's web site we adopt a version of Camellia-256 sporting a 24-round Feistel structure, with FL/FL-1 function layers inserted each 6 rounds.    

    TRUSTe Certified Privacy Seal                                                                                                                                                                                                                                                              
Site protected by 6Scan