Patents by Inventor Jung-Chul AHN

Jung-Chul AHN has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Low-power encryption apparatus and method
    Patent number: 9049004
    Abstract: A low-power encryption apparatus and method are provided. The low-power encryption apparatus includes a mask value generation unit, a mask value application unit, a round key application unit, a mask operation unit, a shift operation unit, and a shift operation correction unit. The mask value generation unit generates a mask value M having the same bit length as input round function values. The mask value application unit generates first masking round function values by applying the mask value M. The round key application unit generates second masking round function values by applying round key values. The mask operation unit generates third masking round function values by performing a mask addition operation. The shill operation unit generates fourth masking round function values by performing a circular shift operation. The shift operation correction unit generates output round function values by performing an operation using the mask value M.
    Type: Grant
    Filed: June 28, 2013
    Date of Patent: June 2, 2015
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Jun-Ki Kang, Sang-Han Lee, Bong-Soo Lee, Seok Ryu, Jung-Chul Ahn, Jung-Gil Park
  • LOW-POWER ENCRYPTION APPARATUS AND METHOD
    Publication number: 20140153725
    Abstract: A low-power encryption apparatus and method are provided. The low-power encryption apparatus includes a mask value generation unit, a mask value application unit, a round key application unit, a mask operation unit, a shift operation unit, and a shift operation correction unit. The mask value generation unit generates a mask value M having the same bit length as input round function values. The mask value application unit generates first masking round function values by applying the mask value M. The round key application unit generates second masking round function values by applying round key values. The mask operation unit generates third masking round function values by performing a mask addition operation. The shill operation unit generates fourth masking round function values by performing a circular shift operation. The shift operation correction unit generates output round function values by performing an operation using the mask value M.
    Type: Application
    Filed: June 28, 2013
    Publication date: June 5, 2014
    Inventors: Jun-Ki KANG, Sang-Han LEE, Bong-Soo LEE, Seok RYU, Jung-Chul AHN, Jung-Gil PARK