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12471842 PL |
1 | /* |
2 | * This file is part of PowerDNS or dnsdist. | |
3 | * Copyright -- PowerDNS.COM B.V. and its contributors | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of version 2 of the GNU General Public License as | |
7 | * published by the Free Software Foundation. | |
8 | * | |
9 | * In addition, for the avoidance of any doubt, permission is granted to | |
10 | * link this program with OpenSSL and to (re)distribute the binaries | |
11 | * produced as the result of such linking. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software | |
20 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
21 | */ | |
6d01c80c | 22 | #pragma once |
0b62ec78 | 23 | #include "config.h" |
6d01c80c | 24 | #include <string> |
8c732ebf | 25 | #include <stdint.h> |
6d01c80c | 26 | |
0b62ec78 | 27 | #include <arpa/inet.h> |
6d01c80c | 28 | |
0b62ec78 | 29 | #ifndef HAVE_LIBSODIUM |
30 | struct SodiumNonce | |
31 | { | |
333ea16e RG |
32 | void init(){}; |
33 | void merge(const SodiumNonce& lower, const SodiumNonce& higher) {}; | |
34 | void increment(){}; | |
35 | unsigned char value[1]; | |
0b62ec78 | 36 | }; |
37 | #else | |
38 | #include <sodium.h> | |
8c732ebf | 39 | |
40 | struct SodiumNonce | |
41 | { | |
42 | void init() | |
43 | { | |
44 | randombytes_buf(value, sizeof value); | |
45 | } | |
333ea16e RG |
46 | |
47 | void merge(const SodiumNonce& lower, const SodiumNonce& higher) | |
48 | { | |
49 | static const size_t halfSize = (sizeof value) / 2; | |
50 | memcpy(value, lower.value, halfSize); | |
51 | memcpy(value + halfSize, higher.value + halfSize, halfSize); | |
52 | } | |
53 | ||
8c732ebf | 54 | void increment() |
55 | { | |
313ed7c5 | 56 | uint32_t* p = (uint32_t*)value; |
57 | uint32_t count=htonl(*p); | |
58 | *p=ntohl(++count); | |
8c732ebf | 59 | } |
60 | ||
61 | string toString() const | |
62 | { | |
63 | return string((const char*)value, crypto_secretbox_NONCEBYTES); | |
64 | } | |
65 | ||
66 | unsigned char value[crypto_secretbox_NONCEBYTES]; | |
67 | }; | |
0b62ec78 | 68 | #endif |
69 | std::string newKeypair(); | |
8c732ebf | 70 | std::string sodEncryptSym(const std::string& msg, const std::string& key, SodiumNonce&); |
71 | std::string sodDecryptSym(const std::string& msg, const std::string& key, SodiumNonce&); | |
72 | std::string newKey(); |