Title:
SECURE DISTRIBUTED DATA PROCESSING
Document Type and Number:
WIPO Patent Application WO/2018/082008
Kind Code:
A1
Abstract:
According to an example aspect of the present invention, there is provided an apparatus comprising at least one processing core, at least one memory including computer program codes, the at least one memory and the computer program codes being configured to, with the at least one processing core, cause the apparatus at least to receive, from at least one data provider, at least one ciphertext, the at least one ciphertext comprising a first ciphertext, perform a mathematical manipulation of the first ciphertext to modify the first ciphertext without decrypting the first ciphertext, the mathematical manipulation being selected in the apparatus in dependence of a mathematical operation to be performed on plaintext underlying the first ciphertext, obtain a second ciphertext from the modified first ciphertext by performing a cryptographic operation, wherein at least one number is randomly generated and used in masking plaintext underlying the second ciphertext, and provide the second ciphertext to an access control node.
Inventors:
DING WENXIU (CN)
YAN ZHENG (CN)
YAN ZHENG (CN)
Application Number:
PCT/CN2016/104553
Publication Date:
May 11, 2018
Filing Date:
November 04, 2016
Export Citation:
Assignee:
NOKIA TECHNOLOGIES OY (FI)
NOKIA TECH BEIJING CO LTD (CN)
NOKIA TECH BEIJING CO LTD (CN)
International Classes:
H04L9/08
Foreign References:
| CN105871550A | 2016-08-17 | |||
| CN102063601A | 2011-05-18 | |||
| EP2120227A1 | 2009-11-18 | |||
| EP3001401A1 | 2016-03-30 |
Other References:
XIMENG LIU ET AL.: "Efficient and Privacy-Preserving Outsources Calculation of Rational Numbers", IEEE TRANSACTIONS ON DEPENDABLE AND SECURE COMPUTING, vol. 15, no. 1, 1 March 2016 (2016-03-01), pages 27 - 39, XP055686573, DOI: 10.1109/TDSC.2016.2536601
MING LI ET AL.: "Scalable and Secure Sharing of Personal Health Records in Cloud Computing Using Attribute-Based Encryption", IEEE TRANSACTIONS ON PARALLAL AND DISTRIBUTED SYSTEMS, vol. 24, no. 1, 1 January 2013 (2013-01-01), XP055378272, DOI: 10.1109/TPDS.2012.97
See also references of EP 3535924A4
MING LI ET AL.: "Scalable and Secure Sharing of Personal Health Records in Cloud Computing Using Attribute-Based Encryption", IEEE TRANSACTIONS ON PARALLAL AND DISTRIBUTED SYSTEMS, vol. 24, no. 1, 1 January 2013 (2013-01-01), XP055378272, DOI: 10.1109/TPDS.2012.97
See also references of EP 3535924A4
Attorney, Agent or Firm:
KING & WOOD MALLESONS (CN)
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