iPXE
crypto_null.c
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1 /*
2  * Copyright (C) 2007 Michael Brown <mbrown@fensystems.co.uk>.
3  *
4  * This program is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU General Public License as
6  * published by the Free Software Foundation; either version 2 of the
7  * License, or any later version.
8  *
9  * This program is distributed in the hope that it will be useful, but
10  * WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12  * General Public License for more details.
13  *
14  * You should have received a copy of the GNU General Public License
15  * along with this program; if not, write to the Free Software
16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
17  * 02110-1301, USA.
18  *
19  * You can also choose to distribute this program under the terms of
20  * the Unmodified Binary Distribution Licence (as given in the file
21  * COPYING.UBDL), provided that you have satisfied its requirements.
22  */
23 
24 FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
25 
26 /**
27  * @file
28  *
29  * Null crypto algorithm
30  */
31 
32 #include <string.h>
33 #include <ipxe/crypto.h>
34 
35 static void digest_null_init ( void *ctx __unused ) {
36  /* Do nothing */
37 }
38 
39 static void digest_null_update ( void *ctx __unused, const void *src __unused,
40  size_t len __unused ) {
41  /* Do nothing */
42 }
43 
44 static void digest_null_final ( void *ctx __unused, void *out __unused ) {
45  /* Do nothing */
46 }
47 
49  .name = "null",
50  .ctxsize = 0,
51  .blocksize = 1,
52  .digestsize = 0,
53  .init = digest_null_init,
54  .update = digest_null_update,
55  .final = digest_null_final,
56 };
57 
58 static int cipher_null_setkey ( void *ctx __unused, const void *key __unused,
59  size_t keylen __unused ) {
60  /* Do nothing */
61  return 0;
62 }
63 
64 static void cipher_null_setiv ( void *ctx __unused,
65  const void *iv __unused ) {
66  /* Do nothing */
67 }
68 
69 static void cipher_null_encrypt ( void *ctx __unused, const void *src,
70  void *dst, size_t len ) {
71  memcpy ( dst, src, len );
72 }
73 
74 static void cipher_null_decrypt ( void *ctx __unused, const void *src,
75  void *dst, size_t len ) {
76  memcpy ( dst, src, len );
77 }
78 
80  .name = "null",
81  .ctxsize = 0,
82  .blocksize = 1,
83  .setkey = cipher_null_setkey,
84  .setiv = cipher_null_setiv,
85  .encrypt = cipher_null_encrypt,
86  .decrypt = cipher_null_decrypt,
87 };
88 
89 static int pubkey_null_init ( void *ctx __unused, const void *key __unused,
90  size_t key_len __unused ) {
91  return 0;
92 }
93 
94 static size_t pubkey_null_max_len ( void *ctx __unused ) {
95  return 0;
96 }
97 
98 static int pubkey_null_encrypt ( void *ctx __unused,
99  const void *plaintext __unused,
100  size_t plaintext_len __unused,
101  void *ciphertext __unused ) {
102  return 0;
103 }
104 
105 static int pubkey_null_decrypt ( void *ctx __unused,
106  const void *ciphertext __unused,
107  size_t ciphertext_len __unused,
108  void *plaintext __unused ) {
109  return 0;
110 }
111 
112 static int pubkey_null_sign ( void *ctx __unused,
114  const void *value __unused,
115  void *signature __unused ) {
116  return 0;
117 }
118 
119 static int pubkey_null_verify ( void *ctx __unused,
121  const void *value __unused,
122  const void *signature __unused ,
123  size_t signature_len __unused ) {
124  return 0;
125 }
126 
127 static void pubkey_null_final ( void *ctx __unused ) {
128  /* Do nothing */
129 }
130 
132  .name = "null",
133  .ctxsize = 0,
134  .init = pubkey_null_init,
135  .max_len = pubkey_null_max_len,
136  .encrypt = pubkey_null_encrypt,
137  .decrypt = pubkey_null_decrypt,
138  .sign = pubkey_null_sign,
139  .verify = pubkey_null_verify,
140  .final = pubkey_null_final,
141 };
static void pubkey_null_final(void *ctx __unused)
Definition: crypto_null.c:127
struct pubkey_algorithm pubkey_null
Definition: crypto_null.c:131
Cryptographic API.
struct golan_eq_context ctx
Definition: CIB_PRM.h:28
struct md4_digest digest
Digest of data already processed.
Definition: md4.h:12
u8 iv[16]
Initialization vector.
Definition: wpa.h:60
u8 signature
Definition: CIB_PRM.h:35
void * memcpy(void *dest, const void *src, size_t len) __nonnull
static int pubkey_null_sign(void *ctx __unused, struct digest_algorithm *digest __unused, const void *value __unused, void *signature __unused)
Definition: crypto_null.c:112
__be32 out[4]
Definition: CIB_PRM.h:36
pseudo_bit_t value[0x00020]
Definition: arbel.h:13
static __always_inline void off_t userptr_t src
Definition: efi_uaccess.h:66
static void cipher_null_encrypt(void *ctx __unused, const void *src, void *dst, size_t len)
Definition: crypto_null.c:69
static int cipher_null_setkey(void *ctx __unused, const void *key __unused, size_t keylen __unused)
Definition: crypto_null.c:58
struct digest_algorithm digest_null
Definition: crypto_null.c:48
struct cipher_algorithm cipher_null
Definition: crypto_null.c:79
static void digest_null_final(void *ctx __unused, void *out __unused)
Definition: crypto_null.c:44
#define __unused
Declare a variable or data structure as unused.
Definition: compiler.h:573
static size_t pubkey_null_max_len(void *ctx __unused)
Definition: crypto_null.c:94
static int pubkey_null_verify(void *ctx __unused, struct digest_algorithm *digest __unused, const void *value __unused, const void *signature __unused, size_t signature_len __unused)
Definition: crypto_null.c:119
uint32_t len
Length.
Definition: ena.h:14
static void digest_null_update(void *ctx __unused, const void *src __unused, size_t len __unused)
Definition: crypto_null.c:39
const char * name
Algorithm name.
Definition: crypto.h:18
static void cipher_null_decrypt(void *ctx __unused, const void *src, void *dst, size_t len)
Definition: crypto_null.c:74
A message digest algorithm.
Definition: crypto.h:16
A cipher algorithm.
Definition: crypto.h:48
static void digest_null_init(void *ctx __unused)
Definition: crypto_null.c:35
static int pubkey_null_decrypt(void *ctx __unused, const void *ciphertext __unused, size_t ciphertext_len __unused, void *plaintext __unused)
Definition: crypto_null.c:105
static int pubkey_null_init(void *ctx __unused, const void *key __unused, size_t key_len __unused)
Definition: crypto_null.c:89
const char * name
Algorithm name.
Definition: crypto.h:50
String functions.
A public key algorithm.
Definition: crypto.h:94
union @375 key
Sense key.
Definition: scsi.h:18
const char * name
Algorithm name.
Definition: crypto.h:96
static void cipher_null_setiv(void *ctx __unused, const void *iv __unused)
Definition: crypto_null.c:64
FILE_LICENCE(GPL2_OR_LATER_OR_UBDL)
static int pubkey_null_encrypt(void *ctx __unused, const void *plaintext __unused, size_t plaintext_len __unused, void *ciphertext __unused)
Definition: crypto_null.c:98