Title:
SECURE DATA PROCESSING
Document Type and Number:
WIPO Patent Application WO/2018/000317
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 code, the at least one memory and the computer program code being configured to, with the at least one processing core, cause the apparatus at least to receive, from a data provider, a first ciphertext, perform a mathematical manipulation of the first ciphertext, the mathematical manipulation modifying plaintext of the first ciphertext without decrypting the first ciphertext, the mathematical manipulation being identified by a computation identifier, obtain a second ciphertext from the first ciphertext by performing a cryptographic re-encryption operation, and provide the second ciphertext to a first computation party.
Inventors:
DING WENXIU (CN)
YAN ZHENG (CN)
YAN ZHENG (CN)
Application Number:
PCT/CN2016/087876
Publication Date:
January 04, 2018
Filing Date:
June 30, 2016
Export Citation:
Assignee:
NOKIA TECHNOLOGIES OY (FI)
NOKIA TECH (BEIJING) CO LTD (CN)
NOKIA TECH (BEIJING) CO LTD (CN)
International Classes:
H04L9/14
Foreign References:
| US20130246813A1 | 2013-09-19 | |||
| CN1366751A | 2002-08-28 | |||
| CN102271037A | 2011-12-07 | |||
| US20020186848A1 | 2002-12-12 |
Attorney, Agent or Firm:
KING & WOOD MALLESONS (CN)
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