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
|
/*
* Copyright 2015-2018 Yubico AB
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifdef NDEBUG
#undef NDEBUG
#endif
#include <assert.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <openssl/evp.h>
#include <openssl/rsa.h>
#include "util.h"
#include "openssl-compat.h"
#include <yubihsm.h>
const char rsa2048_pvtkey_file[] = "rsa2048_pvtkey.pem";
const char *key_label = "label";
const uint8_t password[] = "password";
const uint8_t data[] = "sudo make me a sandwich";
int main(void) {
yh_connector *connector = NULL;
yh_session *session = NULL;
yh_rc yrc = YHR_GENERIC_ERROR;
uint16_t authkey = 1;
const char *connector_url;
connector_url = getenv("DEFAULT_CONNECTOR_URL");
if (connector_url == NULL) {
connector_url = DEFAULT_CONNECTOR_URL;
}
yrc = yh_init();
assert(yrc == YHR_SUCCESS);
yrc = yh_init_connector(connector_url, &connector);
assert(yrc == YHR_SUCCESS);
yrc = yh_connect(connector, 0);
assert(yrc == YHR_SUCCESS);
yrc = yh_create_session_derived(connector, authkey, password,
sizeof(password) - 1, false, &session);
assert(yrc == YHR_SUCCESS);
uint8_t session_id;
yrc = yh_get_session_id(session, &session_id);
assert(yrc == YHR_SUCCESS);
printf("Successfully established session %02d\n", session_id);
FILE *fp = fopen(rsa2048_pvtkey_file, "rb");
assert(fp != NULL);
yh_algorithm algorithm = 0;
uint8_t privkey[2048];
size_t key_material_len = sizeof(privkey);
if (!read_file(fp, privkey, &key_material_len)) {
assert(false);
}
bool ret = read_private_key(privkey, key_material_len, &algorithm, privkey,
&key_material_len, false);
assert(ret == true);
assert(algorithm == YH_ALGO_RSA_2048);
yh_capabilities capabilities = {{0}};
yrc = yh_string_to_capabilities("sign-pss", &capabilities);
assert(yrc == YHR_SUCCESS);
uint16_t domain_five = 0;
yh_string_to_domains("5", &domain_five);
assert(yrc == YHR_SUCCESS);
uint16_t key_id = 0; // ID 0 lets the device generate an ID
yrc = yh_util_import_rsa_key(session, &key_id, key_label, domain_five,
&capabilities, algorithm, privkey,
privkey + (key_material_len / 2));
assert(yrc == YHR_SUCCESS);
printf("Key imported with ID %04x\n", key_id);
printf("Data to sign (%zu bytes) is: %s\n", sizeof(data) - 1, data);
EVP_MD_CTX *mdctx = NULL;
uint8_t hashed_data[32];
unsigned int hashed_data_len;
mdctx = EVP_MD_CTX_create();
assert(mdctx != NULL);
EVP_DigestInit_ex(mdctx, EVP_sha256(), NULL);
EVP_DigestUpdate(mdctx, data, sizeof(data) - 1);
EVP_DigestFinal_ex(mdctx, hashed_data, &hashed_data_len);
EVP_MD_CTX_destroy(mdctx);
printf("Hash of data (%d bytes) is:", EVP_MD_size(EVP_sha256()));
for (unsigned int i = 0; i < hashed_data_len; i++) {
printf(" %02x", hashed_data[i]);
}
printf("\n");
uint8_t signature[512];
size_t signature_len = sizeof(signature);
yrc = yh_util_sign_pss(session, key_id, hashed_data, hashed_data_len,
signature, &signature_len, 32, YH_ALGO_MGF1_SHA256);
assert(yrc == YHR_SUCCESS);
printf("Signature (%zu bytes) is:", signature_len);
for (unsigned int i = 0; i < signature_len; i++) {
printf(" %02x", signature[i]);
}
printf("\n");
uint8_t public_key[512];
size_t public_key_len = sizeof(public_key);
yrc =
yh_util_get_public_key(session, key_id, public_key, &public_key_len, NULL);
assert(yrc == YHR_SUCCESS);
printf("Public key (%zu bytes) is:", public_key_len);
for (unsigned int i = 0; i < public_key_len; i++) {
printf(" %02x", public_key[i]);
}
printf("\n");
BIGNUM *n = BN_bin2bn(public_key, public_key_len, NULL);
assert(n != NULL);
BIGNUM *e = BN_bin2bn((const unsigned char *) "\x01\x00\x01", 3, NULL);
assert(e != NULL);
RSA *rsa = RSA_new();
assert(RSA_set0_key(rsa, n, e, NULL) != 0);
EVP_PKEY *key = EVP_PKEY_new();
assert(EVP_PKEY_assign_RSA(key, rsa) == 1);
EVP_PKEY_CTX *ctx = EVP_PKEY_CTX_new(key, NULL);
assert(ctx != NULL);
assert(EVP_PKEY_verify_init(ctx) == 1);
assert(EVP_PKEY_CTX_set_signature_md(ctx, EVP_sha256()) == 1);
assert(EVP_PKEY_CTX_set_rsa_padding(ctx, RSA_PKCS1_PSS_PADDING) == 1);
assert(EVP_PKEY_CTX_set_rsa_pss_saltlen(ctx, 32) == 1);
assert(EVP_PKEY_CTX_set_rsa_mgf1_md(ctx, EVP_sha256()) == 1);
if (EVP_PKEY_verify(ctx, signature, signature_len, hashed_data,
hashed_data_len) == 1) {
printf("Signature successfully verified\n");
} else {
printf("Unable to verify signature\n");
}
EVP_PKEY_CTX_free(ctx);
EVP_PKEY_free(key);
yrc = yh_util_close_session(session);
assert(yrc == YHR_SUCCESS);
yrc = yh_destroy_session(&session);
assert(yrc == YHR_SUCCESS);
yh_disconnect(connector);
assert(yrc == YHR_SUCCESS);
yrc = yh_exit();
assert(yrc == YHR_SUCCESS);
return 0;
}
|
