Patent SG-11201804733Y-A (SG)
Title: Techniques for metadata processing
Inventor: DEHON ANDRE'
IPC: G06F21/52
Filed: 2016-12-12
Abstract: Writeback12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau 111111111111110 III OE III DID III II III 111111111111111 1111111H (10) International Publication Number WO 2017/106103 Al WIPO I PCT (43) International Publication Date 22 June 2017 (22.06.2017) (74) Agents: SATURNELLI, Anne, E. et al.; Muirhead And Saturnelli, LLC, 200 Friberg Parkway, Suite 1001, West- borough, MA 01581 (US). (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, 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, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG). Published: (51) International Patent Classification: G06F 21/52 (2013.01) G06F 21/62 (2013.01) (21) International Application Number: PCT/US2016/066194 (22) International Filing Date: 12 December 2016 (12.12.2016) English English (25) Filing Language: (26) Publication Language: (30) Priority Data: 62/268,639 17 December 2015 (17.12.2015) 62/270,187 21 December 2015 (21.12.2015) 15/168,689 31 May 2016 (31.05.2016) US US US (71) Applicants: THE CHARLES STARK DRAPER LABORATORY, INC. [US/US]; 555 Technology Square, Cambridge, MA 02139-3563 (US) THE NATIONAL IN- STITUTE FOR RESEARCH IN DATA PROCESSING AND AUTOMATION [FR/FR]; Domaine de Voluceau Rocquencourt - BP 105, F-78153 Le Chesnay (FR) THE TRUSTEES OF THE UNIVERSITY OF PENNSYLVANIA [US/US]; Penn Center for Innovation, 3160 Chestnut Street, Suite 200, Philadelphia, PA 19104 (US). (72) Inventors: DEHON, Andre'; 4743 Sansom St., Phil- adelphia, Pennsylvania 19139 (US). HRITCU, Catalin; C/o Inria Of Paris, France, 2 Rue Simon Iff, 75012 Paris (FR). DHAWAN, Udit; House No. 6491, B-9 Extension, Vasant Kunj, New Delhi 110070 (IN). with international search report (Art 21(3)) [Continued on next page] (54) Title: TECHNIQUES FOR METADATA PROCESSING 3 $ Don't Care L1 PUMP $ y —1.- RF —I.- L1 D$ Tags It Tags --a- Execute Memory Decode PUMP PCtag PC L1 1$ Tags - Fetch 1.4 10 W O 20 17 / 106 103 Al 20 18 16 FIG-1 (57) : Techniques are described for metadata processing that can be used to encode an arbitrary number of security policies for code running on a processor. Metadata may be added to every word in the system and a metadata processing unit may be used that works in parallel with data flow to enforce an arbitrary set of policies. In one aspect, the metadata may be characterized as un- bounded and software programmable to be applicable to a wide range of metadata processing policies. Techniques and policies have a wide range of uses including, for example, safety, security, and synchronization. Additionally, described are aspects and techniques in connection with metadata processing in an embodiment based on the RISC-V architecture. WO 2017/106103 Al 11111111111111011101111111111111111101111111111111111111111111111110N1011110111111 — 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))