• Hasan Kadhem, Toshiyuki Amagasa, and Hiroyuki Kitagawa,
    "A Secure and Efficient Order Preserving Encryption Scheme for Relational Databases",
    Proc. International Conference on Knowledge Management and Information Sharing (KMIS 2010), Valencia, Spain, October 25 - 28, 2010.

  • Hasan Kadhem, Toshiyuki Amagasa, and Hiroyuki Kitagawa,
    "MV-OPES: Multivalued-Order Preserving Encryption Scheme: A Novel Scheme for Encrypting Integer Value to Many Different Values",
    IEICE Trans. Info. & Syst., Vol. E93-D, No. 9,pp.2520-2533, Sept. 2010.

  • Hasan Kadhem, Toshiyuki Amagasa, and Hiroyuki Kitagawa,
    "Mixed Encryption over Semi-Trusted Datebase",
    MASAUM Journal of Basic and Applied Science(MJBAS), Vol.1 Issue.2, September 2009, pp.302-312.

  • Hasan Kadhem, Toshiyuki Amagasa and Hiroyuki Kitagawa,
    "A Novel Framework for Database Security based on Mixed Cryptography",
    Proc. International Conference on Internet and Web Applications and Services(ICIW 2009), pp. 163-170, Venice, Italy, May 24 - 28, 2009.

  • Hasan Kadhem, Toshiyuki Amagasa, Hiroyuki Kitagawa,
    "Encryption over Semi-trusted Database",
    Proc. Database Systems for Advanced Applications, DASFAA 2009 International Workshops (PhD Workshop), pp. 358-362, Brisbane, Australia, April 20, 2009.