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
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
|
/*
* (C) 2015,2017 Jack Lloyd
*
* Botan is released under the Simplified BSD License (see license.txt)
*/
#include <botan/ffi.h>
#include <botan/internal/ffi_util.h>
#include <botan/internal/ffi_rng.h>
#include <botan/pbkdf.h>
#include <botan/pwdhash.h>
#include <botan/kdf.h>
#if defined(BOTAN_HAS_BCRYPT)
#include <botan/bcrypt.h>
#endif
extern "C" {
using namespace Botan_FFI;
int botan_pbkdf(const char* algo, uint8_t out[], size_t out_len,
const char* pass, const uint8_t salt[], size_t salt_len,
size_t iterations)
{
return botan_pwdhash(algo,
iterations,
0,
0,
out, out_len,
pass, 0,
salt, salt_len);
}
int botan_pbkdf_timed(const char* algo,
uint8_t out[], size_t out_len,
const char* password,
const uint8_t salt[], size_t salt_len,
size_t ms_to_run,
size_t* iterations_used)
{
return botan_pwdhash_timed(algo,
static_cast<uint32_t>(ms_to_run),
iterations_used,
nullptr,
nullptr,
out, out_len,
password, 0,
salt, salt_len);
}
int botan_pwdhash(
const char* algo,
size_t param1,
size_t param2,
size_t param3,
uint8_t out[],
size_t out_len,
const char* password,
size_t password_len,
const uint8_t salt[],
size_t salt_len)
{
if(algo == nullptr || password == nullptr)
return BOTAN_FFI_ERROR_NULL_POINTER;
if(password_len == 0)
password_len = std::strlen(password);
return ffi_guard_thunk(BOTAN_CURRENT_FUNCTION, [=]() -> int {
auto pwdhash_fam = Botan::PasswordHashFamily::create(algo);
if(!pwdhash_fam)
return BOTAN_FFI_ERROR_NOT_IMPLEMENTED;
auto pwdhash = pwdhash_fam->from_params(param1, param2, param3);
pwdhash->derive_key(out, out_len,
password, password_len,
salt, salt_len);
return BOTAN_FFI_SUCCESS;
});
}
int botan_pwdhash_timed(
const char* algo,
uint32_t msec,
size_t* param1,
size_t* param2,
size_t* param3,
uint8_t out[],
size_t out_len,
const char* password,
size_t password_len,
const uint8_t salt[],
size_t salt_len)
{
if(algo == nullptr || password == nullptr)
return BOTAN_FFI_ERROR_NULL_POINTER;
if(password_len == 0)
password_len = std::strlen(password);
return ffi_guard_thunk(BOTAN_CURRENT_FUNCTION, [=]() -> int {
auto pwdhash_fam = Botan::PasswordHashFamily::create(algo);
if(!pwdhash_fam)
return BOTAN_FFI_ERROR_NOT_IMPLEMENTED;
auto pwdhash = pwdhash_fam->tune(out_len, std::chrono::milliseconds(msec));
if(param1)
*param1 = pwdhash->iterations();
if(param2)
*param2 = pwdhash->parallelism();
if(param3)
*param3 = pwdhash->memory_param();
pwdhash->derive_key(out, out_len,
password, password_len,
salt, salt_len);
return BOTAN_FFI_SUCCESS;
});
}
int botan_kdf(const char* kdf_algo,
uint8_t out[], size_t out_len,
const uint8_t secret[], size_t secret_len,
const uint8_t salt[], size_t salt_len,
const uint8_t label[], size_t label_len)
{
return ffi_guard_thunk(BOTAN_CURRENT_FUNCTION, [=]() -> int {
std::unique_ptr<Botan::KDF> kdf(Botan::get_kdf(kdf_algo));
kdf->kdf(out, out_len, secret, secret_len, salt, salt_len, label, label_len);
return BOTAN_FFI_SUCCESS;
});
}
int botan_scrypt(uint8_t out[], size_t out_len,
const char* password,
const uint8_t salt[], size_t salt_len,
size_t N, size_t r, size_t p)
{
return botan_pwdhash("Scrypt", N, r, p,
out, out_len,
password, 0,
salt, salt_len);
}
int botan_bcrypt_generate(uint8_t* out, size_t* out_len,
const char* pass,
botan_rng_t rng_obj, size_t wf,
uint32_t flags)
{
#if defined(BOTAN_HAS_BCRYPT)
return ffi_guard_thunk(BOTAN_CURRENT_FUNCTION, [=]() -> int {
if(out == nullptr || out_len == nullptr || pass == nullptr)
return BOTAN_FFI_ERROR_NULL_POINTER;
if(flags != 0)
return BOTAN_FFI_ERROR_BAD_FLAG;
if(wf < 4 || wf > 18)
return BOTAN_FFI_ERROR_BAD_PARAMETER;
Botan::RandomNumberGenerator& rng = safe_get(rng_obj);
const std::string bcrypt = Botan::generate_bcrypt(pass, rng, static_cast<uint16_t>(wf));
return write_str_output(out, out_len, bcrypt);
});
#else
return BOTAN_FFI_ERROR_NOT_IMPLEMENTED;
#endif
}
int botan_bcrypt_is_valid(const char* pass, const char* hash)
{
#if defined(BOTAN_HAS_BCRYPT)
return ffi_guard_thunk(BOTAN_CURRENT_FUNCTION, [=]() -> int {
return Botan::check_bcrypt(pass, hash) ? BOTAN_FFI_SUCCESS : BOTAN_FFI_INVALID_VERIFIER;
});
#else
return BOTAN_FFI_ERROR_NOT_IMPLEMENTED;
#endif
}
}
|
