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
|
/*
* Copyright (C) 2024 Michael Brown <mbrown@fensystems.co.uk>.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*
* You can also choose to distribute this program under the terms of
* the Unmodified Binary Distribution Licence (as given in the file
* COPYING.UBDL), provided that you have satisfied its requirements.
*/
FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
/** @file
*
* Public key self-tests
*
*/
/* Forcibly enable assertions */
#undef NDEBUG
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <ipxe/crypto.h>
#include <ipxe/test.h>
#include "pubkey_test.h"
/**
* Report public key encryption and decryption test result
*
* @v test Public key encryption and decryption test
* @v file Test code file
* @v line Test code line
*/
void pubkey_okx ( struct pubkey_test *test, const char *file,
unsigned int line ) {
struct pubkey_algorithm *pubkey = test->pubkey;
size_t max_len = pubkey_max_len ( pubkey, &test->private );
uint8_t encrypted[max_len];
uint8_t decrypted[max_len];
int encrypted_len;
int decrypted_len;
/* Test decrypting with private key to obtain known plaintext */
decrypted_len = pubkey_decrypt ( pubkey, &test->private,
test->ciphertext, test->ciphertext_len,
decrypted );
okx ( decrypted_len == ( ( int ) test->plaintext_len ), file, line );
okx ( memcmp ( decrypted, test->plaintext, test->plaintext_len ) == 0,
file, line );
/* Test encrypting with private key and decrypting with public key */
encrypted_len = pubkey_encrypt ( pubkey, &test->private,
test->plaintext, test->plaintext_len,
encrypted );
okx ( encrypted_len >= 0, file, line );
decrypted_len = pubkey_decrypt ( pubkey, &test->public, encrypted,
encrypted_len, decrypted );
okx ( decrypted_len == ( ( int ) test->plaintext_len ), file, line );
okx ( memcmp ( decrypted, test->plaintext, test->plaintext_len ) == 0,
file, line );
/* Test encrypting with public key and decrypting with private key */
encrypted_len = pubkey_encrypt ( pubkey, &test->public,
test->plaintext, test->plaintext_len,
encrypted );
okx ( encrypted_len >= 0, file, line );
decrypted_len = pubkey_decrypt ( pubkey, &test->private, encrypted,
encrypted_len, decrypted );
okx ( decrypted_len == ( ( int ) test->plaintext_len ), file, line );
okx ( memcmp ( decrypted, test->plaintext, test->plaintext_len ) == 0,
file, line );
}
/**
* Report public key signature test result
*
* @v test Public key signature test
* @v file Test code file
* @v line Test code line
*/
void pubkey_sign_okx ( struct pubkey_sign_test *test, const char *file,
unsigned int line ) {
struct pubkey_algorithm *pubkey = test->pubkey;
struct digest_algorithm *digest = test->digest;
size_t max_len = pubkey_max_len ( pubkey, &test->private );
uint8_t bad[test->signature_len];
uint8_t digestctx[digest->ctxsize ];
uint8_t digestout[digest->digestsize];
uint8_t signature[max_len];
int signature_len;
/* Construct digest over plaintext */
digest_init ( digest, digestctx );
digest_update ( digest, digestctx, test->plaintext,
test->plaintext_len );
digest_final ( digest, digestctx, digestout );
/* Test signing using private key */
signature_len = pubkey_sign ( pubkey, &test->private, digest,
digestout, signature );
okx ( signature_len == ( ( int ) test->signature_len ), file, line );
okx ( memcmp ( signature, test->signature, test->signature_len ) == 0,
file, line );
/* Test verification using public key */
okx ( pubkey_verify ( pubkey, &test->public, digest, digestout,
test->signature, test->signature_len ) == 0,
file, line );
/* Test verification failure of modified signature */
memcpy ( bad, test->signature, test->signature_len );
bad[ test->signature_len / 2 ] ^= 0x40;
okx ( pubkey_verify ( pubkey, &test->public, digest, digestout,
bad, sizeof ( bad ) ) != 0, file, line );
}
|
