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
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
|
/*
* Author: Sven Gothel <sgothel@jausoft.com>
* Copyright (c) 2021 Gothel Software e.K.
* Copyright (c) 2021 ZAFENA AB
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <fstream>
#include <cipherpack/cipherpack.hpp>
#include <curl/curl.h>
#include <jau/debug.hpp>
using namespace cipherpack;
void Environment::env_init() noexcept {
jau::environment::get("cipherpack");
curl_global_init(CURL_GLOBAL_ALL);
}
const std::string Constants::package_magic = "CIPHERPACK_0001";
static const std::string default_pk_type = "RSA";
static const std::string default_pk_fingerprt_hash_algo = "SHA-256";
static const std::string default_pk_enc_padding_algo = "OAEP"; // or "EME1"
static const std::string default_pk_enc_hash_algo = "SHA-256";
static const std::string default_pk_sign_algo = "EMSA1(SHA-256)";
static const std::string default_sym_enc_mac_algo = "ChaCha20Poly1305"; // or "AES-256/GCM"
/**
* Symmetric Encryption nonce size in bytes.
*
* We only process one message per 'encrypted_key', hence small nonce size of 64 bit.
*
* ChaCha Nonce Sizes are usually: 64-bit classic, 96-bit IETF, 192-bit big
*/
static constexpr const size_t ChaCha_Nonce_BitSize = 64;
CryptoConfig CryptoConfig::getDefault() noexcept {
return CryptoConfig (
default_pk_type, default_pk_fingerprt_hash_algo,
default_pk_enc_padding_algo, default_pk_enc_hash_algo,
default_pk_sign_algo, default_sym_enc_mac_algo, ChaCha_Nonce_BitSize/8
);
}
bool CryptoConfig::valid() const noexcept {
return !pk_type.empty() &&
!pk_fingerprt_hash_algo.empty() &&
!pk_enc_padding_algo.empty() &&
!pk_enc_hash_algo.empty() &&
!pk_sign_algo.empty() &&
!sym_enc_algo.empty() &&
sym_enc_nonce_bytes > 0;
}
std::string CryptoConfig::to_string() const noexcept {
return "CCfg[pk[type '"+pk_type+"', fingerprt_hash '"+pk_fingerprt_hash_algo+"', enc_padding '"+pk_enc_padding_algo+
"', enc_hash '"+pk_enc_hash_algo+"', sign '"+pk_sign_algo+
"'], sym['"+sym_enc_algo+"', nonce "+std::to_string(sym_enc_nonce_bytes)+" byte]]";
}
std::shared_ptr<Botan::Public_Key> cipherpack::load_public_key(const std::string& pubkey_fname) {
jau::io::ByteInStream_File key_data(pubkey_fname, false /* use_binary */);
std::shared_ptr<Botan::Public_Key> key(Botan::X509::load_key(key_data));
if( !key ) {
ERR_PRINT("Couldn't load Key %s", pubkey_fname.c_str());
return std::shared_ptr<Botan::Public_Key>();
}
if( key->algo_name() != "RSA" ) {
ERR_PRINT("Key doesn't support RSA %s", pubkey_fname.c_str());
return std::shared_ptr<Botan::Public_Key>();
}
return key;
}
std::shared_ptr<Botan::Private_Key> cipherpack::load_private_key(const std::string& privatekey_fname, const std::string& passphrase) {
jau::io::ByteInStream_File key_data(privatekey_fname, false /* use_binary */);
std::shared_ptr<Botan::Private_Key> key;
if( passphrase.empty() ) {
key = Botan::PKCS8::load_key(key_data);
} else {
key = Botan::PKCS8::load_key(key_data, passphrase);
}
if( !key ) {
ERR_PRINT("Couldn't load Key %s", privatekey_fname.c_str());
return std::shared_ptr<Botan::Private_Key>();
}
if( key->algo_name() != "RSA" ) {
ERR_PRINT("Key doesn't support RSA %s", privatekey_fname.c_str());
return std::shared_ptr<Botan::Private_Key>();
}
return key;
}
std::string PackHeader::toString(const bool show_crypto_algos, const bool force_all_fingerprints) const noexcept {
const std::string crypto_str = show_crypto_algos ? crypto_cfg.to_string() : "";
std::string term_fingerprint;
{
if( 0 <= term_key_fingerprint_used_idx ) {
term_fingerprint += "dec '"+term_keys_fingerprint.at(term_key_fingerprint_used_idx)+"', ";
}
if( force_all_fingerprints || 0 > term_key_fingerprint_used_idx ) {
term_fingerprint += "enc[";
int i = 0;
for(const std::string& tkf : term_keys_fingerprint) {
if( 0 < i ) {
term_fingerprint += ", ";
}
term_fingerprint += "'"+tkf+"'";
++i;
}
term_fingerprint += "]";
}
}
std::string res = "Header[";
res += "valid "+std::to_string( isValid() )+
", file[target_path "+target_path+", content_size "+jau::to_decstring(content_size).c_str()+
"], creation "+ts_creation.to_iso8601_string(true)+" UTC, intention '"+intention+"', "+
" version["+payload_version+
", parent "+payload_version_parent+crypto_str+
"], fingerprints[sign/host '"+host_key_fingerprint+
"', term["+term_fingerprint+
"]]]";
return res;
}
|
