Patent application EP17175339A (EP), filed 2017-06-09
Publication number: EP3258669A1
Title: COMPUTER-IMPLEMENTED SYSTEM AND METHOD FOR PROTECTING SENSITIVE DATA VIA DATA RE-ENCRYPTION
Abstract: A computer-implemented method for protecting sensitive data via data re-encryption is provided. Encrypted data is maintained. A data query is received from a user associated with a public key and a secret key. Results of the query are computed by identifying at least a portion of the encrypted data and by adding plaintext for the identified portion of the encrypted data as the results. A re-encryption key is generated for the results using the public key of the user and the results are re-encrypted using the re-encryption key. The re-encrypted results are then transmitted to the user.
IPC codes: H04L  29/    06            A I
H04L   9/    00            A I
G06F  16/   248            A I
H04L   9/    08            A I
Claims: number: 1
text: A computer-implemented system for protecting sensitive data via data re-encryption, comprising:
number: 2
text: A system according to Claim 1, further comprising:
number: 3
text: A system according to Claim 1, further comprising:
number: 4
text: A system according to Claim 1, further comprising:
number: 5
text: A system according to Claim 1, further comprising:
number: 6
text: A computer-implemented method for protecting sensitive data via data re-encryption, comprising:
number: 7
text: A method according to Claim 6, further comprising:
number: 8
text: A method according to Claim 6, further comprising:
number: 9
text: A method according to Claim 6, further comprising:
number: 10
text: A method according to Claim 6, further comprising:
Office action: search_report, dated 2017-12-20
Rejection reasons: novelty_epc_54
Prior art cited: ref_id: EP2924911A1
ref_type: patent
severity: background
ref_id: WO2016051591A1
ref_type: patent
severity: background
ref_id: US2016380767A1
ref_type: patent
severity: background
ref_id: - "Preserving Privacy in Data Outsourcing", vol. 51, 1 January 2011, SPRINGER US, Boston, MA, ISBN: 978-1-44-197659-8, ISSN: 1568-2633, article SARA FORESTI: "Overview of the State of the Art", pages: 9 - 30, XP055116296, DOI: 10.1007/978-1-4419-7659-8_2
ref_type: npl
severity: background
ref_id: EP2924911
ref_type: patent
severity: novelty_destroying
ref_id: WO2016051591
ref_type: patent
severity: novelty_destroying
ref_id: US2016380767
ref_type: patent
severity: background
ref_id: - Sara Foresti, "Overview of the State of the Art", Preserving Privacy in Data Outsourcing, Boston, MA, Springer US, (20110101), vol. 51, pages 9 - 30, doi:10.1007/978-1-4419-7659-8_2, ISSN 1568-2633, ISBN 978-1-44-197659-8, XP055116296 [A] 1-10 * section 2.3; page  15  - page  24 *
ref_type: npl
severity: background
Final disposition: pending (2017-12-20)