EP 1776794 A4 20100922 - PERMUTATION DATA TRANSFORM TO ENHANCE SECURITY
Title (en)
PERMUTATION DATA TRANSFORM TO ENHANCE SECURITY
Title (de)
PERMUTATIONSDATENTRANSFORMATION ZUR VERBESSERUNG DER SICHERHEIT
Title (fr)
TRANSFORMATION DE DONNEES DE PERMUTATION AMELIORANT LA SECURITE
Publication
Application
Priority
- US 2005028316 W 20050809
- US 91871704 A 20040812
- US 91810304 A 20040812
- US 91871804 A 20040812
Abstract (en)
[origin: WO2006023334A2] One data transformation permutes certain bits in a data input based on other bits in the data input. Another data transformation raises one segment of a data input to a power of a function of another segment, the power being relatively prime to a function of a predefined modulus. The modulus is then applied to the result, and the transformed data assembled. In one key derivation application, a segment of the master key is hashed. Two numbers are derived from another segment of the master key. A universal hash function is applied to the result of the hash, from which bits are selected as the derived key. In another embodiment, an encoded counter is combined with segments of the master key. The result is then hashed, from which bits are selected as the derived key. These algorithms can be combined with each other and with key wrapping algorithms or encryption algorithms to enhance the security of these other applications.
IPC 8 full level
CPC (source: EP KR)
G06F 21/00 (2013.01 - KR); G09C 1/00 (2013.01 - EP); H04L 9/065 (2013.01 - KR); H04L 9/06 (2013.01 - EP); H04L 9/0861 (2013.01 - EP); H04L 2209/603 (2013.01 - EP)
Citation (search report)
- [A] US 4316055 A 19820216 - FEISTEL HORST
- [A] EP 1087425 A1 20010328 - OTKRYTOE AKTSIONERNOE OBSCHEST [RU], et al
- [IY] MOLDOVYAN A A ET AL: "A CIPHER BASED ON DATA-DEPENDENT PERMUTATIONS", JOURNAL OF CRYPTOLOGY, SPRINGER, NEW YORK, NY, US LNKD- DOI:10.1007/S00145-001-0012-9, vol. 15, no. 1, 1 December 2002 (2002-12-01), pages 61 - 72, XP001077672, ISSN: 0933-2790
- [Y] KWAN M: "THE DESIGN OF THE ICE ENCRYPTION ALGORITHM", FAST SOFTWARE ENCRYPTION. INTERNATIONAL WORKSHOP, XX, XX, 20 January 1997 (1997-01-20), pages 69 - 82, XP008002265
- See references of WO 2006023334A2
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA HR MK YU
DOCDB simple family (publication)
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DOCDB simple family (application)
US 2005028316 W 20050809; AU 2005277664 A 20050809; AU 2010200320 A 20100128; AU 2010200323 A 20100128; BR PI0514256 A 20050809; CA 2576881 A 20050809; CA 2780980 A 20050809; CA 2781070 A 20050809; CN 201210283630 A 20050809; CN 201210284637 A 20050809; EP 05809820 A 20050809; EP 12150373 A 20050809; EP 12150375 A 20050809; EP 12161611 A 20050809; EP 13167858 A 20050809; EP 13167859 A 20050809; IL 18120607 A 20070207; IL 21147311 A 20110228; IL 21147411 A 20110228; IL 21147511 A 20110228; IL 21147611 A 20110228; JP 2007525746 A 20050809; JP 2008282834 A 20081104; JP 2008282838 A 20081104; JP 2011205926 A 20110921; JP 2011205927 A 20110921; KR 20077003490 A 20050809; KR 20117017382 A 20050809; KR 20117029214 A 20050809; KR 20127019485 A 20050809; KR 20127033720 A 20050809; KR 20137000304 A 20050809; KR 20137018806 A 20050809; MA 29743 A 20070308; MX 2007001672 A 20050809; NZ 55342405 A 20050809; NZ 57482405 A 20050809; NZ 57482505 A 20050809; NZ 58522505 A 20050809; NZ 59224205 A 20050809; NZ 59790905 A 20050809; NZ 60102505 A 20050809; NZ 60382205 A 20050809