Patent SG-11201909905W-A (SG)
Title: Method and system for registering digital documents
Inventor: ALMGREN HANS
IPC: H04L9/32
Filed: 2018-05-03
Abstract: Fig100 1-1 d 1-1 N cc O N 00 O 1-1 C (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 08 November 2018 (08.11.2018) WIPO I PCT 01E101°1a °nolo oloionomim turnoff oimIE (10) International Publication Number WO 2018/203817 Al (51) International Patent Classification: GOOF 21/64 (2013.01) HO4L 9/32 (2006.01) (21) International Application Number: PCT/SE2018/050459 (22) International Filing Date: 03 May 2018 (03.05.2018) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 1750538-9 03 May 2017 (03.05.2017) SE (71) Applicant: ENIGIO TIME AB [SE/SE]; ., Jakob Westins- gatan 3, 112 20 STOCKHOLM (SE). (72) Inventors: ALMGREN, Hans; ., Ellahagsvagen 16, 187 32 TABY (SE). HANSEN, Lars; ., Fleminggatan 28, 112 32 STOCKHOLM (SE). (74) Agent: NORENS PATENTBYRA AB; Box 10198, 100 55 STOCKHOLM (SE). (81) Designated States (unless otherwise indicated, for every kind of national protection available): AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (84) Designated States (unless otherwise indicated, for every kind of regional protection available): ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, (54) Title: Method and system for registering digital documents (57) : Method for registering an electronically stored digital document (A), comprising the steps of a) providing to an owning party a digital document and a private ownership key, which private ownership key is a private key in an asymmetric cryptographic key pair also comprising a corresponding public ownership key; b)calculating a digital document hash value based upon the document (A); c)the owning party using the private ownership key to calculate a digital document signature of the document (A); d)digitally storing in an electronic digital document register not the document (A), but the document signature as well as the public ownership key and the document hash value. The invention also relates to a system. [Continued on next page] WO 2018/203817 Al MIDEDIMOMMIDIIMENHIOMMIOMMEDIOHMEMOIS TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG). Published: with international search report (Art. 21(3)) before the expiration of the time limit for amending the claims and to be republished in the event of receipt of amendments (Rule 48.2(h))