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crypto.hpp
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1 //*********************************************************************/
2 // dar - disk archive - a backup/restoration program
3 // Copyright (C) 2002-2020 Denis Corbin
4 //
5 // This program is free software; you can redistribute it and/or
6 // modify it under the terms of the GNU General Public License
7 // as published by the Free Software Foundation; either version 2
8 // of the License, or (at your option) any later version.
9 //
10 // This program is distributed in the hope that it will be useful,
11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 // GNU General Public License for more details.
14 //
15 // You should have received a copy of the GNU General Public License
16 // along with this program; if not, write to the Free Software
17 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
18 //
19 // to contact the author : http://dar.linux.free.fr/email.html
20 /*********************************************************************/
21
25
26 #ifndef CRYPTO_HPP
27 #define CRYPTO_HPP
28
29 extern "C"
30 {
31
32 }
33
34 #include "../my_config.h"
35 #include <string>
36
37 #include "datetime.hpp"
38
39 #include <list>
40
41 namespace libdar
42 {
43
46
48
49 enum class crypto_algo
50 {
51 none,
52 scrambling,
53 blowfish,
54 aes256,
55 twofish256,
56 serpent256,
57 camellia256
58 };
59
61
62 struct signator
63 {
64 enum result_t
65 {
66 good, //< good signature
67 bad, //< key correct bug signature tempered
68 unknown_key, //< no key found to check the signature
69 error //< signature failed to be checked for other error
70 };
71 enum key_validity_t
72 {
73 valid, //< the key we have is neither expired nor revoked
74 expired, //< the key we have has expired
75 revoked //< the key we have has been revoked
76 };
77 key_validity_t key_validity; //< validity of the key used to verify the signature
78 result_t result; //< status of the signing
79 std::string fingerprint; //< fingerprint of the key
80 datetime signing_date; //< date of signature
81 datetime signature_expiration_date; //< date of expiration of this signature
82 bool operator < (const signator & ref) const { return fingerprint < ref.fingerprint; };
83 bool operator == (const signator & ref) const { return result == ref.result && key_validity == ref.key_validity && fingerprint == ref.fingerprint && signature_expiration_date == ref.signature_expiration_date; };
84 };
85
87 extern std::string crypto_algo_2_string(crypto_algo algo);
88
90 extern char crypto_algo_2_char(crypto_algo a);
91
93 extern crypto_algo char_2_crypto_algo(char a);
94
95
97 extern bool same_signatories(const std::list<signator> & a, const std::list<signator> & b);
98
100
101 } // end of namespace
102
103 #endif
libdar::char_2_crypto_algo
crypto_algo char_2_crypto_algo(char a)
convert char to crypto algo
libdar::crypto_algo::camellia256
@ camellia256
camellia 256 strong encryption
libdar::crypto_algo::scrambling
@ scrambling
scrambling weak encryption
libdar::crypto_algo_2_char
char crypto_algo_2_char(crypto_algo a)
convert crypto algo to char
libdar::crypto_algo_2_string
std::string crypto_algo_2_string(crypto_algo algo)
convert crypto algo to readable std::string
datetime.hpp
this file contains the definition of class datetime that stores unix times in a portable way
libdar::crypto_algo::blowfish
@ blowfish
blowfish strong encryption
libdar::crypto_algo::none
@ none
no encryption
libdar::same_signatories
bool same_signatories(const std::list< signator > &a, const std::list< signator > &b)
return whether the two signators lists match
libdar::signator
signator status
Definition: crypto.hpp:63
libdar::datetime
stores time information
Definition: datetime.hpp:59
libdar::crypto_algo::twofish256
@ twofish256
twofish 256 strong encryption
libdar::crypto_algo
crypto_algo
the different cypher available for encryption (strong or weak)
Definition: crypto.hpp:50
libdar::crypto_algo::serpent256
@ serpent256
serpent 256 strong encryption
libdar::crypto_algo::aes256
@ aes256
AES 256 strong encryption.
libdar
libdar namespace encapsulate all libdar symbols
Definition: archive.hpp:47