1 // SPDX-License-Identifier: GPL-2.0-or-later 1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /* 2 /*
3 * Cryptographic API. 3 * Cryptographic API.
4 * 4 *
5 * DES & Triple DES EDE Cipher Algorithms. 5 * DES & Triple DES EDE Cipher Algorithms.
6 * 6 *
7 * Copyright (c) 2005 Dag Arne Osvik <da@osvik 7 * Copyright (c) 2005 Dag Arne Osvik <da@osvik.no>
8 */ 8 */
9 9
10 #include <asm/byteorder.h> 10 #include <asm/byteorder.h>
11 #include <crypto/algapi.h> <<
12 #include <linux/bitops.h> 11 #include <linux/bitops.h>
13 #include <linux/init.h> 12 #include <linux/init.h>
14 #include <linux/module.h> 13 #include <linux/module.h>
15 #include <linux/errno.h> 14 #include <linux/errno.h>
>> 15 #include <linux/crypto.h>
16 16
17 #include <crypto/internal/des.h> 17 #include <crypto/internal/des.h>
18 18
19 static int des_setkey(struct crypto_tfm *tfm, 19 static int des_setkey(struct crypto_tfm *tfm, const u8 *key,
20 unsigned int keylen) 20 unsigned int keylen)
21 { 21 {
22 struct des_ctx *dctx = crypto_tfm_ctx( 22 struct des_ctx *dctx = crypto_tfm_ctx(tfm);
23 int err; 23 int err;
24 24
25 err = des_expand_key(dctx, key, keylen 25 err = des_expand_key(dctx, key, keylen);
26 if (err == -ENOKEY) { 26 if (err == -ENOKEY) {
27 if (crypto_tfm_get_flags(tfm) 27 if (crypto_tfm_get_flags(tfm) & CRYPTO_TFM_REQ_FORBID_WEAK_KEYS)
28 err = -EINVAL; 28 err = -EINVAL;
29 else 29 else
30 err = 0; 30 err = 0;
31 } 31 }
32 if (err) 32 if (err)
33 memset(dctx, 0, sizeof(*dctx)) 33 memset(dctx, 0, sizeof(*dctx));
34 return err; 34 return err;
35 } 35 }
36 36
37 static void crypto_des_encrypt(struct crypto_t 37 static void crypto_des_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
38 { 38 {
39 const struct des_ctx *dctx = crypto_tf 39 const struct des_ctx *dctx = crypto_tfm_ctx(tfm);
40 40
41 des_encrypt(dctx, dst, src); 41 des_encrypt(dctx, dst, src);
42 } 42 }
43 43
44 static void crypto_des_decrypt(struct crypto_t 44 static void crypto_des_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
45 { 45 {
46 const struct des_ctx *dctx = crypto_tf 46 const struct des_ctx *dctx = crypto_tfm_ctx(tfm);
47 47
48 des_decrypt(dctx, dst, src); 48 des_decrypt(dctx, dst, src);
49 } 49 }
50 50
51 static int des3_ede_setkey(struct crypto_tfm * 51 static int des3_ede_setkey(struct crypto_tfm *tfm, const u8 *key,
52 unsigned int keylen 52 unsigned int keylen)
53 { 53 {
54 struct des3_ede_ctx *dctx = crypto_tfm 54 struct des3_ede_ctx *dctx = crypto_tfm_ctx(tfm);
55 int err; 55 int err;
56 56
57 err = des3_ede_expand_key(dctx, key, k 57 err = des3_ede_expand_key(dctx, key, keylen);
58 if (err == -ENOKEY) { 58 if (err == -ENOKEY) {
59 if (crypto_tfm_get_flags(tfm) 59 if (crypto_tfm_get_flags(tfm) & CRYPTO_TFM_REQ_FORBID_WEAK_KEYS)
60 err = -EINVAL; 60 err = -EINVAL;
61 else 61 else
62 err = 0; 62 err = 0;
63 } 63 }
64 if (err) 64 if (err)
65 memset(dctx, 0, sizeof(*dctx)) 65 memset(dctx, 0, sizeof(*dctx));
66 return err; 66 return err;
67 } 67 }
68 68
69 static void crypto_des3_ede_encrypt(struct cry 69 static void crypto_des3_ede_encrypt(struct crypto_tfm *tfm, u8 *dst,
70 const u8 * 70 const u8 *src)
71 { 71 {
72 const struct des3_ede_ctx *dctx = cryp 72 const struct des3_ede_ctx *dctx = crypto_tfm_ctx(tfm);
73 73
74 des3_ede_encrypt(dctx, dst, src); 74 des3_ede_encrypt(dctx, dst, src);
75 } 75 }
76 76
77 static void crypto_des3_ede_decrypt(struct cry 77 static void crypto_des3_ede_decrypt(struct crypto_tfm *tfm, u8 *dst,
78 const u8 * 78 const u8 *src)
79 { 79 {
80 const struct des3_ede_ctx *dctx = cryp 80 const struct des3_ede_ctx *dctx = crypto_tfm_ctx(tfm);
81 81
82 des3_ede_decrypt(dctx, dst, src); 82 des3_ede_decrypt(dctx, dst, src);
83 } 83 }
84 84
85 static struct crypto_alg des_algs[2] = { { 85 static struct crypto_alg des_algs[2] = { {
86 .cra_name = "des", 86 .cra_name = "des",
87 .cra_driver_name = "des-g 87 .cra_driver_name = "des-generic",
88 .cra_priority = 100, 88 .cra_priority = 100,
89 .cra_flags = CRYPTO 89 .cra_flags = CRYPTO_ALG_TYPE_CIPHER,
90 .cra_blocksize = DES_BL 90 .cra_blocksize = DES_BLOCK_SIZE,
91 .cra_ctxsize = sizeof 91 .cra_ctxsize = sizeof(struct des_ctx),
92 .cra_module = THIS_M 92 .cra_module = THIS_MODULE,
93 .cra_u = { .cip 93 .cra_u = { .cipher = {
94 .cia_min_keysize = DES_KE 94 .cia_min_keysize = DES_KEY_SIZE,
95 .cia_max_keysize = DES_KE 95 .cia_max_keysize = DES_KEY_SIZE,
96 .cia_setkey = des_se 96 .cia_setkey = des_setkey,
97 .cia_encrypt = crypto 97 .cia_encrypt = crypto_des_encrypt,
98 .cia_decrypt = crypto 98 .cia_decrypt = crypto_des_decrypt } }
99 }, { 99 }, {
100 .cra_name = "des3_ 100 .cra_name = "des3_ede",
101 .cra_driver_name = "des3_ 101 .cra_driver_name = "des3_ede-generic",
102 .cra_priority = 100, 102 .cra_priority = 100,
103 .cra_flags = CRYPTO 103 .cra_flags = CRYPTO_ALG_TYPE_CIPHER,
104 .cra_blocksize = DES3_E 104 .cra_blocksize = DES3_EDE_BLOCK_SIZE,
105 .cra_ctxsize = sizeof 105 .cra_ctxsize = sizeof(struct des3_ede_ctx),
106 .cra_module = THIS_M 106 .cra_module = THIS_MODULE,
107 .cra_u = { .cip 107 .cra_u = { .cipher = {
108 .cia_min_keysize = DES3_E 108 .cia_min_keysize = DES3_EDE_KEY_SIZE,
109 .cia_max_keysize = DES3_E 109 .cia_max_keysize = DES3_EDE_KEY_SIZE,
110 .cia_setkey = des3_e 110 .cia_setkey = des3_ede_setkey,
111 .cia_encrypt = crypto 111 .cia_encrypt = crypto_des3_ede_encrypt,
112 .cia_decrypt = crypto 112 .cia_decrypt = crypto_des3_ede_decrypt } }
113 } }; 113 } };
114 114
115 static int __init des_generic_mod_init(void) 115 static int __init des_generic_mod_init(void)
116 { 116 {
117 return crypto_register_algs(des_algs, 117 return crypto_register_algs(des_algs, ARRAY_SIZE(des_algs));
118 } 118 }
119 119
120 static void __exit des_generic_mod_fini(void) 120 static void __exit des_generic_mod_fini(void)
121 { 121 {
122 crypto_unregister_algs(des_algs, ARRAY 122 crypto_unregister_algs(des_algs, ARRAY_SIZE(des_algs));
123 } 123 }
124 124
125 subsys_initcall(des_generic_mod_init); 125 subsys_initcall(des_generic_mod_init);
126 module_exit(des_generic_mod_fini); 126 module_exit(des_generic_mod_fini);
127 127
128 MODULE_LICENSE("GPL"); 128 MODULE_LICENSE("GPL");
129 MODULE_DESCRIPTION("DES & Triple DES EDE Ciphe 129 MODULE_DESCRIPTION("DES & Triple DES EDE Cipher Algorithms");
130 MODULE_AUTHOR("Dag Arne Osvik <da@osvik.no>"); 130 MODULE_AUTHOR("Dag Arne Osvik <da@osvik.no>");
131 MODULE_ALIAS_CRYPTO("des"); 131 MODULE_ALIAS_CRYPTO("des");
132 MODULE_ALIAS_CRYPTO("des-generic"); 132 MODULE_ALIAS_CRYPTO("des-generic");
133 MODULE_ALIAS_CRYPTO("des3_ede"); 133 MODULE_ALIAS_CRYPTO("des3_ede");
134 MODULE_ALIAS_CRYPTO("des3_ede-generic"); 134 MODULE_ALIAS_CRYPTO("des3_ede-generic");
135 135
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