Homomorphic data decryption method and apparatus for implementing privacy protection
地域：
George Town
摘要
A computer-implemented method, non-transitory, computer-readable medium, and computer-implemented system are provided for implementing privacy protection. In an implementation, a public key pk={N, h} corresponding to a target user is obtained, where h is a generator of a predetermined cyclic group with a size of k in a random number space Z*N, a length of k is i bits, a length of N is n bits, and i<
說明書
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
Therefore, an internal direct product of group QRNβ and group ?1
constitutes the predetermined cyclic group. For example, the predetermined cyclic group can be represented as QRNβ?
?1
. By setting |QRNβ|=α, it can be determined that the size of the predetermined cyclic group is k=2α with reference to the size of group
?1
being 2. Therefore, when private key sk=α=a·k is satisfied, a=α/k=1/2 can be determined.
意見反饋
使用該功能遇到問題