Josef Pieprzyk is a professor at Macquarie University in Sydney, Australia. Macquarie University is an Australian university located in Sydney. ... The Sydney Opera House is one of the most iconic landmarks in the world, and since its opening it has become an international symbol of Sydney Sydney (pronounced ) is the state capital of New South Wales, located on the east coast of Australia. ...
He has worked on cryptography, in particular the XSL attack. He colaborated in the invention of the LOKI and LOKI97block ciphers and the HAVAL cryptographic hash function. The German Lorenz cipher machine Cryptography or cryptology is a field of mathematics and computer science concerned with information security and related issues, particularly encryption and authentication. ... New Scientist magazine featured the XSL attack in June 2003 with an article billed as Cipher crisis: the end of internet privacy. In cryptography, the XSL attack is a method of cryptanalysis for block ciphers. ... This picture, from an 18th century Icelandic manuscript, shows Loki with his invention - the fishing net. ... General Designer(s) Lawrie Brown, assisted by Jennifer Seberry and Josef Pieprzyk First published 1998 Derived from LOKI91 Cipher(s) based on this design - Algorithm detail Block size(s) 128 bits Key size(s) 128, 192 or 256 bits Structure Feistel network Number of rounds 16 Best cryptanalysis Linear cryptanalysis... Encryption Decryption In cryptography, a block cipher is a symmetric key cipher which operates on fixed-length groups of bits, termed blocks, with an unvarying transformation. ... HAVAL is a variable-length cryptographic hash function. ... In cryptography, a cryptographic hash function is a hash function with certain additional security properties to make it suitable for use as a primitive in various information security applications, such as authentication and message integrity. ...
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