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-rw-r--r--include/crypto/algapi.h156
-rw-r--r--include/crypto/twofish.h22
2 files changed, 178 insertions, 0 deletions
diff --git a/include/crypto/algapi.h b/include/crypto/algapi.h
new file mode 100644
index 000000000000..5748aecdb414
--- /dev/null
+++ b/include/crypto/algapi.h
@@ -0,0 +1,156 @@
1/*
2 * Cryptographic API for algorithms (i.e., low-level API).
3 *
4 * Copyright (c) 2006 Herbert Xu <herbert@gondor.apana.org.au>
5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the Free
8 * Software Foundation; either version 2 of the License, or (at your option)
9 * any later version.
10 *
11 */
12#ifndef _CRYPTO_ALGAPI_H
13#define _CRYPTO_ALGAPI_H
14
15#include <linux/crypto.h>
16
17struct module;
18struct seq_file;
19
20struct crypto_type {
21 unsigned int (*ctxsize)(struct crypto_alg *alg);
22 int (*init)(struct crypto_tfm *tfm);
23 void (*exit)(struct crypto_tfm *tfm);
24 void (*show)(struct seq_file *m, struct crypto_alg *alg);
25};
26
27struct crypto_instance {
28 struct crypto_alg alg;
29
30 struct crypto_template *tmpl;
31 struct hlist_node list;
32
33 void *__ctx[] CRYPTO_MINALIGN_ATTR;
34};
35
36struct crypto_template {
37 struct list_head list;
38 struct hlist_head instances;
39 struct module *module;
40
41 struct crypto_instance *(*alloc)(void *param, unsigned int len);
42 void (*free)(struct crypto_instance *inst);
43
44 char name[CRYPTO_MAX_ALG_NAME];
45};
46
47struct crypto_spawn {
48 struct list_head list;
49 struct crypto_alg *alg;
50 struct crypto_instance *inst;
51};
52
53struct scatter_walk {
54 struct scatterlist *sg;
55 unsigned int offset;
56};
57
58struct blkcipher_walk {
59 union {
60 struct {
61 struct page *page;
62 unsigned long offset;
63 } phys;
64
65 struct {
66 u8 *page;
67 u8 *addr;
68 } virt;
69 } src, dst;
70
71 struct scatter_walk in;
72 unsigned int nbytes;
73
74 struct scatter_walk out;
75 unsigned int total;
76
77 void *page;
78 u8 *buffer;
79 u8 *iv;
80
81 int flags;
82};
83
84extern const struct crypto_type crypto_blkcipher_type;
85extern const struct crypto_type crypto_hash_type;
86
87void crypto_mod_put(struct crypto_alg *alg);
88
89int crypto_register_template(struct crypto_template *tmpl);
90void crypto_unregister_template(struct crypto_template *tmpl);
91struct crypto_template *crypto_lookup_template(const char *name);
92
93int crypto_init_spawn(struct crypto_spawn *spawn, struct crypto_alg *alg,
94 struct crypto_instance *inst);
95void crypto_drop_spawn(struct crypto_spawn *spawn);
96struct crypto_tfm *crypto_spawn_tfm(struct crypto_spawn *spawn);
97
98struct crypto_alg *crypto_get_attr_alg(void *param, unsigned int len,
99 u32 type, u32 mask);
100struct crypto_instance *crypto_alloc_instance(const char *name,
101 struct crypto_alg *alg);
102
103int blkcipher_walk_done(struct blkcipher_desc *desc,
104 struct blkcipher_walk *walk, int err);
105int blkcipher_walk_virt(struct blkcipher_desc *desc,
106 struct blkcipher_walk *walk);
107int blkcipher_walk_phys(struct blkcipher_desc *desc,
108 struct blkcipher_walk *walk);
109
110static inline void *crypto_tfm_ctx_aligned(struct crypto_tfm *tfm)
111{
112 unsigned long addr = (unsigned long)crypto_tfm_ctx(tfm);
113 unsigned long align = crypto_tfm_alg_alignmask(tfm);
114
115 if (align <= crypto_tfm_ctx_alignment())
116 align = 1;
117 return (void *)ALIGN(addr, align);
118}
119
120static inline void *crypto_instance_ctx(struct crypto_instance *inst)
121{
122 return inst->__ctx;
123}
124
125static inline void *crypto_blkcipher_ctx(struct crypto_blkcipher *tfm)
126{
127 return crypto_tfm_ctx(&tfm->base);
128}
129
130static inline void *crypto_blkcipher_ctx_aligned(struct crypto_blkcipher *tfm)
131{
132 return crypto_tfm_ctx_aligned(&tfm->base);
133}
134
135static inline struct cipher_alg *crypto_cipher_alg(struct crypto_cipher *tfm)
136{
137 return &crypto_cipher_tfm(tfm)->__crt_alg->cra_cipher;
138}
139
140static inline void *crypto_hash_ctx_aligned(struct crypto_hash *tfm)
141{
142 return crypto_tfm_ctx_aligned(&tfm->base);
143}
144
145static inline void blkcipher_walk_init(struct blkcipher_walk *walk,
146 struct scatterlist *dst,
147 struct scatterlist *src,
148 unsigned int nbytes)
149{
150 walk->in.sg = src;
151 walk->out.sg = dst;
152 walk->total = nbytes;
153}
154
155#endif /* _CRYPTO_ALGAPI_H */
156
diff --git a/include/crypto/twofish.h b/include/crypto/twofish.h
new file mode 100644
index 000000000000..c408522595c6
--- /dev/null
+++ b/include/crypto/twofish.h
@@ -0,0 +1,22 @@
1#ifndef _CRYPTO_TWOFISH_H
2#define _CRYPTO_TWOFISH_H
3
4#include <linux/types.h>
5
6#define TF_MIN_KEY_SIZE 16
7#define TF_MAX_KEY_SIZE 32
8#define TF_BLOCK_SIZE 16
9
10struct crypto_tfm;
11
12/* Structure for an expanded Twofish key. s contains the key-dependent
13 * S-boxes composed with the MDS matrix; w contains the eight "whitening"
14 * subkeys, K[0] through K[7]. k holds the remaining, "round" subkeys. Note
15 * that k[i] corresponds to what the Twofish paper calls K[i+8]. */
16struct twofish_ctx {
17 u32 s[4][256], w[8], k[32];
18};
19
20int twofish_setkey(struct crypto_tfm *tfm, const u8 *key, unsigned int key_len);
21
22#endif
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