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
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
|
// -*-c++-*-
/* $Id: pm.h,v 1.3 2006/02/25 02:03:13 mfreed Exp $ */
/*
*
* Copyright (C) 2005 Michael J. Freedman (mfreedman at alum.mit.edu)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2, or (at
* your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA
*
*/
#ifndef _PRIVATE_MATCHING_H_
#define _PRIVATE_MATCHING_H_ 1
#include "vec.h"
#include "qhash.h"
#include "homoenc.h"
struct cpayload {
crypt_ctext ctxt; // ciphertext
size_t ptsz; // plaintext size
};
struct ppayload {
str ptxt; // plaintext
};
class pm_client {
private:
ref<homoenc_priv> sk;
vec<crypt_ctext> coeffs;
bool encrypt_polynomial (vec<crypt_ctext> &ccoeffs) const;
public:
pm_client (ref<homoenc_priv> s) : sk (s) {}
bool set_polynomial (const vec<str> &inputs);
bool set_polynomial (const vec<bigint> &inputs);
const vec<crypt_ctext> & get_polynomial () const { return coeffs; }
void decrypt_intersection (vec<str> &payloads,
const vec<cpayload> &plds) const;
};
class pm_server {
public:
qhash<str, ppayload> inputs;
private:
void evaluate_polynomial (vec<cpayload> *res,
const vec<crypt_ctext> *ccoeffs,
const homoenc_pub *pk,
const crypt_ctext *encone,
const str &x, ppayload *payload);
public:
pm_server () {}
void evaluate_intersection (vec<cpayload> *res,
const vec<crypt_ctext> *ccoeffs,
const homoenc_pub *pk);
};
#endif /* _PRIVATE_MATCHING_H_ */
|
