Herbert Xu | 18e33e6 | 2008-07-10 16:01:22 +0800 | [diff] [blame] | 1 | /* |
| 2 | * Hash: Hash algorithms under the crypto API |
| 3 | * |
| 4 | * Copyright (c) 2008 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 | |
| 13 | #ifndef _CRYPTO_HASH_H |
| 14 | #define _CRYPTO_HASH_H |
| 15 | |
| 16 | #include <linux/crypto.h> |
| 17 | |
Herbert Xu | 7b5a080b | 2008-08-31 15:47:27 +1000 | [diff] [blame] | 18 | struct shash_desc { |
| 19 | struct crypto_shash *tfm; |
| 20 | u32 flags; |
| 21 | |
| 22 | void *__ctx[] CRYPTO_MINALIGN_ATTR; |
| 23 | }; |
| 24 | |
| 25 | struct shash_alg { |
| 26 | int (*init)(struct shash_desc *desc); |
| 27 | int (*update)(struct shash_desc *desc, const u8 *data, |
| 28 | unsigned int len); |
| 29 | int (*final)(struct shash_desc *desc, u8 *out); |
| 30 | int (*finup)(struct shash_desc *desc, const u8 *data, |
| 31 | unsigned int len, u8 *out); |
| 32 | int (*digest)(struct shash_desc *desc, const u8 *data, |
| 33 | unsigned int len, u8 *out); |
Herbert Xu | 99d27e1 | 2009-07-09 20:30:57 +0800 | [diff] [blame^] | 34 | int (*export)(struct shash_desc *desc, void *out); |
| 35 | int (*import)(struct shash_desc *desc, const void *in); |
Herbert Xu | 7b5a080b | 2008-08-31 15:47:27 +1000 | [diff] [blame] | 36 | int (*setkey)(struct crypto_shash *tfm, const u8 *key, |
| 37 | unsigned int keylen); |
| 38 | |
| 39 | unsigned int descsize; |
| 40 | unsigned int digestsize; |
Herbert Xu | 99d27e1 | 2009-07-09 20:30:57 +0800 | [diff] [blame^] | 41 | unsigned int statesize; |
Herbert Xu | 7b5a080b | 2008-08-31 15:47:27 +1000 | [diff] [blame] | 42 | |
| 43 | struct crypto_alg base; |
| 44 | }; |
| 45 | |
Herbert Xu | 18e33e6 | 2008-07-10 16:01:22 +0800 | [diff] [blame] | 46 | struct crypto_ahash { |
| 47 | struct crypto_tfm base; |
| 48 | }; |
| 49 | |
Herbert Xu | 7b5a080b | 2008-08-31 15:47:27 +1000 | [diff] [blame] | 50 | struct crypto_shash { |
| 51 | struct crypto_tfm base; |
| 52 | }; |
| 53 | |
Herbert Xu | 18e33e6 | 2008-07-10 16:01:22 +0800 | [diff] [blame] | 54 | static inline struct crypto_ahash *__crypto_ahash_cast(struct crypto_tfm *tfm) |
| 55 | { |
| 56 | return (struct crypto_ahash *)tfm; |
| 57 | } |
| 58 | |
| 59 | static inline struct crypto_ahash *crypto_alloc_ahash(const char *alg_name, |
| 60 | u32 type, u32 mask) |
| 61 | { |
| 62 | type &= ~CRYPTO_ALG_TYPE_MASK; |
| 63 | mask &= ~CRYPTO_ALG_TYPE_MASK; |
| 64 | type |= CRYPTO_ALG_TYPE_AHASH; |
| 65 | mask |= CRYPTO_ALG_TYPE_AHASH_MASK; |
| 66 | |
| 67 | return __crypto_ahash_cast(crypto_alloc_base(alg_name, type, mask)); |
| 68 | } |
| 69 | |
| 70 | static inline struct crypto_tfm *crypto_ahash_tfm(struct crypto_ahash *tfm) |
| 71 | { |
| 72 | return &tfm->base; |
| 73 | } |
| 74 | |
| 75 | static inline void crypto_free_ahash(struct crypto_ahash *tfm) |
| 76 | { |
| 77 | crypto_free_tfm(crypto_ahash_tfm(tfm)); |
| 78 | } |
| 79 | |
| 80 | static inline unsigned int crypto_ahash_alignmask( |
| 81 | struct crypto_ahash *tfm) |
| 82 | { |
| 83 | return crypto_tfm_alg_alignmask(crypto_ahash_tfm(tfm)); |
| 84 | } |
| 85 | |
| 86 | static inline struct ahash_tfm *crypto_ahash_crt(struct crypto_ahash *tfm) |
| 87 | { |
| 88 | return &crypto_ahash_tfm(tfm)->crt_ahash; |
| 89 | } |
| 90 | |
| 91 | static inline unsigned int crypto_ahash_digestsize(struct crypto_ahash *tfm) |
| 92 | { |
| 93 | return crypto_ahash_crt(tfm)->digestsize; |
| 94 | } |
| 95 | |
| 96 | static inline u32 crypto_ahash_get_flags(struct crypto_ahash *tfm) |
| 97 | { |
| 98 | return crypto_tfm_get_flags(crypto_ahash_tfm(tfm)); |
| 99 | } |
| 100 | |
| 101 | static inline void crypto_ahash_set_flags(struct crypto_ahash *tfm, u32 flags) |
| 102 | { |
| 103 | crypto_tfm_set_flags(crypto_ahash_tfm(tfm), flags); |
| 104 | } |
| 105 | |
| 106 | static inline void crypto_ahash_clear_flags(struct crypto_ahash *tfm, u32 flags) |
| 107 | { |
| 108 | crypto_tfm_clear_flags(crypto_ahash_tfm(tfm), flags); |
| 109 | } |
| 110 | |
| 111 | static inline struct crypto_ahash *crypto_ahash_reqtfm( |
| 112 | struct ahash_request *req) |
| 113 | { |
| 114 | return __crypto_ahash_cast(req->base.tfm); |
| 115 | } |
| 116 | |
| 117 | static inline unsigned int crypto_ahash_reqsize(struct crypto_ahash *tfm) |
| 118 | { |
| 119 | return crypto_ahash_crt(tfm)->reqsize; |
| 120 | } |
| 121 | |
Herbert Xu | dec8b78 | 2008-11-02 21:38:11 +0800 | [diff] [blame] | 122 | static inline void *ahash_request_ctx(struct ahash_request *req) |
| 123 | { |
| 124 | return req->__ctx; |
| 125 | } |
| 126 | |
Herbert Xu | 18e33e6 | 2008-07-10 16:01:22 +0800 | [diff] [blame] | 127 | static inline int crypto_ahash_setkey(struct crypto_ahash *tfm, |
| 128 | const u8 *key, unsigned int keylen) |
| 129 | { |
| 130 | struct ahash_tfm *crt = crypto_ahash_crt(tfm); |
| 131 | |
| 132 | return crt->setkey(tfm, key, keylen); |
| 133 | } |
| 134 | |
| 135 | static inline int crypto_ahash_digest(struct ahash_request *req) |
| 136 | { |
| 137 | struct ahash_tfm *crt = crypto_ahash_crt(crypto_ahash_reqtfm(req)); |
| 138 | return crt->digest(req); |
| 139 | } |
| 140 | |
Herbert Xu | dec8b78 | 2008-11-02 21:38:11 +0800 | [diff] [blame] | 141 | static inline void crypto_ahash_export(struct ahash_request *req, u8 *out) |
| 142 | { |
| 143 | memcpy(out, ahash_request_ctx(req), |
| 144 | crypto_ahash_reqsize(crypto_ahash_reqtfm(req))); |
| 145 | } |
| 146 | |
| 147 | int crypto_ahash_import(struct ahash_request *req, const u8 *in); |
| 148 | |
Herbert Xu | 318e531 | 2008-08-05 13:34:30 +0800 | [diff] [blame] | 149 | static inline int crypto_ahash_init(struct ahash_request *req) |
| 150 | { |
| 151 | struct ahash_tfm *crt = crypto_ahash_crt(crypto_ahash_reqtfm(req)); |
| 152 | return crt->init(req); |
| 153 | } |
| 154 | |
| 155 | static inline int crypto_ahash_update(struct ahash_request *req) |
| 156 | { |
| 157 | struct ahash_tfm *crt = crypto_ahash_crt(crypto_ahash_reqtfm(req)); |
| 158 | return crt->update(req); |
| 159 | } |
| 160 | |
| 161 | static inline int crypto_ahash_final(struct ahash_request *req) |
| 162 | { |
| 163 | struct ahash_tfm *crt = crypto_ahash_crt(crypto_ahash_reqtfm(req)); |
| 164 | return crt->final(req); |
| 165 | } |
| 166 | |
Herbert Xu | 18e33e6 | 2008-07-10 16:01:22 +0800 | [diff] [blame] | 167 | static inline void ahash_request_set_tfm(struct ahash_request *req, |
| 168 | struct crypto_ahash *tfm) |
| 169 | { |
| 170 | req->base.tfm = crypto_ahash_tfm(tfm); |
| 171 | } |
| 172 | |
| 173 | static inline struct ahash_request *ahash_request_alloc( |
| 174 | struct crypto_ahash *tfm, gfp_t gfp) |
| 175 | { |
| 176 | struct ahash_request *req; |
| 177 | |
| 178 | req = kmalloc(sizeof(struct ahash_request) + |
| 179 | crypto_ahash_reqsize(tfm), gfp); |
| 180 | |
| 181 | if (likely(req)) |
| 182 | ahash_request_set_tfm(req, tfm); |
| 183 | |
| 184 | return req; |
| 185 | } |
| 186 | |
| 187 | static inline void ahash_request_free(struct ahash_request *req) |
| 188 | { |
| 189 | kfree(req); |
| 190 | } |
| 191 | |
| 192 | static inline struct ahash_request *ahash_request_cast( |
| 193 | struct crypto_async_request *req) |
| 194 | { |
| 195 | return container_of(req, struct ahash_request, base); |
| 196 | } |
| 197 | |
| 198 | static inline void ahash_request_set_callback(struct ahash_request *req, |
| 199 | u32 flags, |
| 200 | crypto_completion_t complete, |
| 201 | void *data) |
| 202 | { |
| 203 | req->base.complete = complete; |
| 204 | req->base.data = data; |
| 205 | req->base.flags = flags; |
| 206 | } |
| 207 | |
| 208 | static inline void ahash_request_set_crypt(struct ahash_request *req, |
| 209 | struct scatterlist *src, u8 *result, |
| 210 | unsigned int nbytes) |
| 211 | { |
| 212 | req->src = src; |
| 213 | req->nbytes = nbytes; |
| 214 | req->result = result; |
| 215 | } |
| 216 | |
Herbert Xu | 7b5a080b | 2008-08-31 15:47:27 +1000 | [diff] [blame] | 217 | struct crypto_shash *crypto_alloc_shash(const char *alg_name, u32 type, |
| 218 | u32 mask); |
| 219 | |
| 220 | static inline struct crypto_tfm *crypto_shash_tfm(struct crypto_shash *tfm) |
| 221 | { |
| 222 | return &tfm->base; |
| 223 | } |
| 224 | |
| 225 | static inline void crypto_free_shash(struct crypto_shash *tfm) |
| 226 | { |
Herbert Xu | 412e87a | 2009-02-05 16:51:25 +1100 | [diff] [blame] | 227 | crypto_destroy_tfm(tfm, crypto_shash_tfm(tfm)); |
Herbert Xu | 7b5a080b | 2008-08-31 15:47:27 +1000 | [diff] [blame] | 228 | } |
| 229 | |
| 230 | static inline unsigned int crypto_shash_alignmask( |
| 231 | struct crypto_shash *tfm) |
| 232 | { |
| 233 | return crypto_tfm_alg_alignmask(crypto_shash_tfm(tfm)); |
| 234 | } |
| 235 | |
Herbert Xu | 9749598 | 2009-02-03 12:47:44 +1100 | [diff] [blame] | 236 | static inline unsigned int crypto_shash_blocksize(struct crypto_shash *tfm) |
| 237 | { |
| 238 | return crypto_tfm_alg_blocksize(crypto_shash_tfm(tfm)); |
| 239 | } |
| 240 | |
Herbert Xu | 7b5a080b | 2008-08-31 15:47:27 +1000 | [diff] [blame] | 241 | static inline struct shash_alg *__crypto_shash_alg(struct crypto_alg *alg) |
| 242 | { |
| 243 | return container_of(alg, struct shash_alg, base); |
| 244 | } |
| 245 | |
| 246 | static inline struct shash_alg *crypto_shash_alg(struct crypto_shash *tfm) |
| 247 | { |
| 248 | return __crypto_shash_alg(crypto_shash_tfm(tfm)->__crt_alg); |
| 249 | } |
| 250 | |
| 251 | static inline unsigned int crypto_shash_digestsize(struct crypto_shash *tfm) |
| 252 | { |
| 253 | return crypto_shash_alg(tfm)->digestsize; |
| 254 | } |
| 255 | |
Herbert Xu | 99d27e1 | 2009-07-09 20:30:57 +0800 | [diff] [blame^] | 256 | static inline unsigned int crypto_shash_statesize(struct crypto_shash *tfm) |
| 257 | { |
| 258 | return crypto_shash_alg(tfm)->statesize; |
| 259 | } |
| 260 | |
Herbert Xu | 7b5a080b | 2008-08-31 15:47:27 +1000 | [diff] [blame] | 261 | static inline u32 crypto_shash_get_flags(struct crypto_shash *tfm) |
| 262 | { |
| 263 | return crypto_tfm_get_flags(crypto_shash_tfm(tfm)); |
| 264 | } |
| 265 | |
| 266 | static inline void crypto_shash_set_flags(struct crypto_shash *tfm, u32 flags) |
| 267 | { |
| 268 | crypto_tfm_set_flags(crypto_shash_tfm(tfm), flags); |
| 269 | } |
| 270 | |
| 271 | static inline void crypto_shash_clear_flags(struct crypto_shash *tfm, u32 flags) |
| 272 | { |
| 273 | crypto_tfm_clear_flags(crypto_shash_tfm(tfm), flags); |
| 274 | } |
| 275 | |
| 276 | static inline unsigned int crypto_shash_descsize(struct crypto_shash *tfm) |
| 277 | { |
| 278 | return crypto_shash_alg(tfm)->descsize; |
| 279 | } |
| 280 | |
| 281 | static inline void *shash_desc_ctx(struct shash_desc *desc) |
| 282 | { |
| 283 | return desc->__ctx; |
| 284 | } |
| 285 | |
| 286 | int crypto_shash_setkey(struct crypto_shash *tfm, const u8 *key, |
| 287 | unsigned int keylen); |
| 288 | int crypto_shash_digest(struct shash_desc *desc, const u8 *data, |
| 289 | unsigned int len, u8 *out); |
| 290 | |
Herbert Xu | 99d27e1 | 2009-07-09 20:30:57 +0800 | [diff] [blame^] | 291 | static inline int crypto_shash_export(struct shash_desc *desc, void *out) |
Herbert Xu | dec8b78 | 2008-11-02 21:38:11 +0800 | [diff] [blame] | 292 | { |
Herbert Xu | 99d27e1 | 2009-07-09 20:30:57 +0800 | [diff] [blame^] | 293 | return crypto_shash_alg(desc->tfm)->export(desc, out); |
Herbert Xu | dec8b78 | 2008-11-02 21:38:11 +0800 | [diff] [blame] | 294 | } |
| 295 | |
Herbert Xu | 99d27e1 | 2009-07-09 20:30:57 +0800 | [diff] [blame^] | 296 | static inline int crypto_shash_import(struct shash_desc *desc, const void *in) |
| 297 | { |
| 298 | return crypto_shash_alg(desc->tfm)->import(desc, in); |
| 299 | } |
Herbert Xu | dec8b78 | 2008-11-02 21:38:11 +0800 | [diff] [blame] | 300 | |
Herbert Xu | 7b5a080b | 2008-08-31 15:47:27 +1000 | [diff] [blame] | 301 | static inline int crypto_shash_init(struct shash_desc *desc) |
| 302 | { |
| 303 | return crypto_shash_alg(desc->tfm)->init(desc); |
| 304 | } |
| 305 | |
| 306 | int crypto_shash_update(struct shash_desc *desc, const u8 *data, |
| 307 | unsigned int len); |
| 308 | int crypto_shash_final(struct shash_desc *desc, u8 *out); |
| 309 | int crypto_shash_finup(struct shash_desc *desc, const u8 *data, |
| 310 | unsigned int len, u8 *out); |
| 311 | |
Herbert Xu | 18e33e6 | 2008-07-10 16:01:22 +0800 | [diff] [blame] | 312 | #endif /* _CRYPTO_HASH_H */ |