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author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-09-11 18:38:37 +0200 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-09-11 18:38:37 +0200 |
commit | 332a3392188e0ad966543c87b8da2b9d246f301d (patch) | |
tree | ac0d570590bffdd1924426adc5b255857d2f3297 /include/crypto | |
parent | Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiw... (diff) | |
parent | crypto: sha-s390 - Fix warnings in import function (diff) | |
download | linux-332a3392188e0ad966543c87b8da2b9d246f301d.tar.xz linux-332a3392188e0ad966543c87b8da2b9d246f301d.zip |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (102 commits)
crypto: sha-s390 - Fix warnings in import function
crypto: vmac - New hash algorithm for intel_txt support
crypto: api - Do not displace newly registered algorithms
crypto: ansi_cprng - Fix module initialization
crypto: xcbc - Fix alignment calculation of xcbc_tfm_ctx
crypto: fips - Depend on ansi_cprng
crypto: blkcipher - Do not use eseqiv on stream ciphers
crypto: ctr - Use chainiv on raw counter mode
Revert crypto: fips - Select CPRNG
crypto: rng - Fix typo
crypto: talitos - add support for 36 bit addressing
crypto: talitos - align locks on cache lines
crypto: talitos - simplify hmac data size calculation
crypto: mv_cesa - Add support for Orion5X crypto engine
crypto: cryptd - Add support to access underlaying shash
crypto: gcm - Use GHASH digest algorithm
crypto: ghash - Add GHASH digest algorithm for GCM
crypto: authenc - Convert to ahash
crypto: api - Fix aligned ctx helper
crypto: hmac - Prehash ipad/opad
...
Diffstat (limited to 'include/crypto')
-rw-r--r-- | include/crypto/algapi.h | 37 | ||||
-rw-r--r-- | include/crypto/cryptd.h | 17 | ||||
-rw-r--r-- | include/crypto/hash.h | 147 | ||||
-rw-r--r-- | include/crypto/internal/hash.h | 147 | ||||
-rw-r--r-- | include/crypto/sha.h | 20 | ||||
-rw-r--r-- | include/crypto/vmac.h | 61 |
6 files changed, 366 insertions, 63 deletions
diff --git a/include/crypto/algapi.h b/include/crypto/algapi.h index 5a2bd1cc9656..1ffb53f74d37 100644 --- a/include/crypto/algapi.h +++ b/include/crypto/algapi.h @@ -22,11 +22,9 @@ struct seq_file; struct crypto_type { unsigned int (*ctxsize)(struct crypto_alg *alg, u32 type, u32 mask); - unsigned int (*extsize)(struct crypto_alg *alg, - const struct crypto_type *frontend); + unsigned int (*extsize)(struct crypto_alg *alg); int (*init)(struct crypto_tfm *tfm, u32 type, u32 mask); - int (*init_tfm)(struct crypto_tfm *tfm, - const struct crypto_type *frontend); + int (*init_tfm)(struct crypto_tfm *tfm); void (*show)(struct seq_file *m, struct crypto_alg *alg); struct crypto_alg *(*lookup)(const char *name, u32 type, u32 mask); @@ -52,6 +50,7 @@ struct crypto_template { struct crypto_instance *(*alloc)(struct rtattr **tb); void (*free)(struct crypto_instance *inst); + int (*create)(struct crypto_template *tmpl, struct rtattr **tb); char name[CRYPTO_MAX_ALG_NAME]; }; @@ -60,6 +59,7 @@ struct crypto_spawn { struct list_head list; struct crypto_alg *alg; struct crypto_instance *inst; + const struct crypto_type *frontend; u32 mask; }; @@ -114,11 +114,19 @@ int crypto_register_template(struct crypto_template *tmpl); void crypto_unregister_template(struct crypto_template *tmpl); struct crypto_template *crypto_lookup_template(const char *name); +int crypto_register_instance(struct crypto_template *tmpl, + struct crypto_instance *inst); + int crypto_init_spawn(struct crypto_spawn *spawn, struct crypto_alg *alg, struct crypto_instance *inst, u32 mask); +int crypto_init_spawn2(struct crypto_spawn *spawn, struct crypto_alg *alg, + struct crypto_instance *inst, + const struct crypto_type *frontend); + void crypto_drop_spawn(struct crypto_spawn *spawn); struct crypto_tfm *crypto_spawn_tfm(struct crypto_spawn *spawn, u32 type, u32 mask); +void *crypto_spawn_tfm2(struct crypto_spawn *spawn); static inline void crypto_set_spawn(struct crypto_spawn *spawn, struct crypto_instance *inst) @@ -129,8 +137,19 @@ static inline void crypto_set_spawn(struct crypto_spawn *spawn, struct crypto_attr_type *crypto_get_attr_type(struct rtattr **tb); int crypto_check_attr_type(struct rtattr **tb, u32 type); const char *crypto_attr_alg_name(struct rtattr *rta); -struct crypto_alg *crypto_attr_alg(struct rtattr *rta, u32 type, u32 mask); +struct crypto_alg *crypto_attr_alg2(struct rtattr *rta, + const struct crypto_type *frontend, + u32 type, u32 mask); + +static inline struct crypto_alg *crypto_attr_alg(struct rtattr *rta, + u32 type, u32 mask) +{ + return crypto_attr_alg2(rta, NULL, type, mask); +} + int crypto_attr_u32(struct rtattr *rta, u32 *num); +void *crypto_alloc_instance2(const char *name, struct crypto_alg *alg, + unsigned int head); struct crypto_instance *crypto_alloc_instance(const char *name, struct crypto_alg *alg); @@ -157,12 +176,8 @@ int blkcipher_walk_virt_block(struct blkcipher_desc *desc, static inline void *crypto_tfm_ctx_aligned(struct crypto_tfm *tfm) { - unsigned long addr = (unsigned long)crypto_tfm_ctx(tfm); - unsigned long align = crypto_tfm_alg_alignmask(tfm); - - if (align <= crypto_tfm_ctx_alignment()) - align = 1; - return (void *)ALIGN(addr, align); + return PTR_ALIGN(crypto_tfm_ctx(tfm), + crypto_tfm_alg_alignmask(tfm) + 1); } static inline struct crypto_instance *crypto_tfm_alg_instance( diff --git a/include/crypto/cryptd.h b/include/crypto/cryptd.h index 55fa7bbdbc71..2f65a6e8ea4d 100644 --- a/include/crypto/cryptd.h +++ b/include/crypto/cryptd.h @@ -7,6 +7,7 @@ #include <linux/crypto.h> #include <linux/kernel.h> +#include <crypto/hash.h> struct cryptd_ablkcipher { struct crypto_ablkcipher base; @@ -24,4 +25,20 @@ struct cryptd_ablkcipher *cryptd_alloc_ablkcipher(const char *alg_name, struct crypto_blkcipher *cryptd_ablkcipher_child(struct cryptd_ablkcipher *tfm); void cryptd_free_ablkcipher(struct cryptd_ablkcipher *tfm); +struct cryptd_ahash { + struct crypto_ahash base; +}; + +static inline struct cryptd_ahash *__cryptd_ahash_cast( + struct crypto_ahash *tfm) +{ + return (struct cryptd_ahash *)tfm; +} + +/* alg_name should be algorithm to be cryptd-ed */ +struct cryptd_ahash *cryptd_alloc_ahash(const char *alg_name, + u32 type, u32 mask); +struct crypto_shash *cryptd_ahash_child(struct cryptd_ahash *tfm); +void cryptd_free_ahash(struct cryptd_ahash *tfm); + #endif diff --git a/include/crypto/hash.h b/include/crypto/hash.h index d56bb71617c3..26cb1eb16f4c 100644 --- a/include/crypto/hash.h +++ b/include/crypto/hash.h @@ -15,6 +15,42 @@ #include <linux/crypto.h> +struct crypto_ahash; + +struct hash_alg_common { + unsigned int digestsize; + unsigned int statesize; + + struct crypto_alg base; +}; + +struct ahash_request { + struct crypto_async_request base; + + unsigned int nbytes; + struct scatterlist *src; + u8 *result; + + /* This field may only be used by the ahash API code. */ + void *priv; + + void *__ctx[] CRYPTO_MINALIGN_ATTR; +}; + +struct ahash_alg { + int (*init)(struct ahash_request *req); + int (*update)(struct ahash_request *req); + int (*final)(struct ahash_request *req); + int (*finup)(struct ahash_request *req); + int (*digest)(struct ahash_request *req); + int (*export)(struct ahash_request *req, void *out); + int (*import)(struct ahash_request *req, const void *in); + int (*setkey)(struct crypto_ahash *tfm, const u8 *key, + unsigned int keylen); + + struct hash_alg_common halg; +}; + struct shash_desc { struct crypto_shash *tfm; u32 flags; @@ -24,7 +60,6 @@ struct shash_desc { struct shash_alg { int (*init)(struct shash_desc *desc); - int (*reinit)(struct shash_desc *desc); int (*update)(struct shash_desc *desc, const u8 *data, unsigned int len); int (*final)(struct shash_desc *desc, u8 *out); @@ -32,38 +67,48 @@ struct shash_alg { unsigned int len, u8 *out); int (*digest)(struct shash_desc *desc, const u8 *data, unsigned int len, u8 *out); + int (*export)(struct shash_desc *desc, void *out); + int (*import)(struct shash_desc *desc, const void *in); int (*setkey)(struct crypto_shash *tfm, const u8 *key, unsigned int keylen); unsigned int descsize; - unsigned int digestsize; + + /* These fields must match hash_alg_common. */ + unsigned int digestsize + __attribute__ ((aligned(__alignof__(struct hash_alg_common)))); + unsigned int statesize; struct crypto_alg base; }; struct crypto_ahash { + int (*init)(struct ahash_request *req); + int (*update)(struct ahash_request *req); + int (*final)(struct ahash_request *req); + int (*finup)(struct ahash_request *req); + int (*digest)(struct ahash_request *req); + int (*export)(struct ahash_request *req, void *out); + int (*import)(struct ahash_request *req, const void *in); + int (*setkey)(struct crypto_ahash *tfm, const u8 *key, + unsigned int keylen); + + unsigned int reqsize; struct crypto_tfm base; }; struct crypto_shash { + unsigned int descsize; struct crypto_tfm base; }; static inline struct crypto_ahash *__crypto_ahash_cast(struct crypto_tfm *tfm) { - return (struct crypto_ahash *)tfm; + return container_of(tfm, struct crypto_ahash, base); } -static inline struct crypto_ahash *crypto_alloc_ahash(const char *alg_name, - u32 type, u32 mask) -{ - type &= ~CRYPTO_ALG_TYPE_MASK; - mask &= ~CRYPTO_ALG_TYPE_MASK; - type |= CRYPTO_ALG_TYPE_AHASH; - mask |= CRYPTO_ALG_TYPE_AHASH_MASK; - - return __crypto_ahash_cast(crypto_alloc_base(alg_name, type, mask)); -} +struct crypto_ahash *crypto_alloc_ahash(const char *alg_name, u32 type, + u32 mask); static inline struct crypto_tfm *crypto_ahash_tfm(struct crypto_ahash *tfm) { @@ -72,7 +117,7 @@ static inline struct crypto_tfm *crypto_ahash_tfm(struct crypto_ahash *tfm) static inline void crypto_free_ahash(struct crypto_ahash *tfm) { - crypto_free_tfm(crypto_ahash_tfm(tfm)); + crypto_destroy_tfm(tfm, crypto_ahash_tfm(tfm)); } static inline unsigned int crypto_ahash_alignmask( @@ -81,14 +126,26 @@ static inline unsigned int crypto_ahash_alignmask( return crypto_tfm_alg_alignmask(crypto_ahash_tfm(tfm)); } -static inline struct ahash_tfm *crypto_ahash_crt(struct crypto_ahash *tfm) +static inline struct hash_alg_common *__crypto_hash_alg_common( + struct crypto_alg *alg) +{ + return container_of(alg, struct hash_alg_common, base); +} + +static inline struct hash_alg_common *crypto_hash_alg_common( + struct crypto_ahash *tfm) { - return &crypto_ahash_tfm(tfm)->crt_ahash; + return __crypto_hash_alg_common(crypto_ahash_tfm(tfm)->__crt_alg); } static inline unsigned int crypto_ahash_digestsize(struct crypto_ahash *tfm) { - return crypto_ahash_crt(tfm)->digestsize; + return crypto_hash_alg_common(tfm)->digestsize; +} + +static inline unsigned int crypto_ahash_statesize(struct crypto_ahash *tfm) +{ + return crypto_hash_alg_common(tfm)->statesize; } static inline u32 crypto_ahash_get_flags(struct crypto_ahash *tfm) @@ -114,7 +171,7 @@ static inline struct crypto_ahash *crypto_ahash_reqtfm( static inline unsigned int crypto_ahash_reqsize(struct crypto_ahash *tfm) { - return crypto_ahash_crt(tfm)->reqsize; + return tfm->reqsize; } static inline void *ahash_request_ctx(struct ahash_request *req) @@ -122,44 +179,30 @@ static inline void *ahash_request_ctx(struct ahash_request *req) return req->__ctx; } -static inline int crypto_ahash_setkey(struct crypto_ahash *tfm, - const u8 *key, unsigned int keylen) -{ - struct ahash_tfm *crt = crypto_ahash_crt(tfm); - - return crt->setkey(tfm, key, keylen); -} +int crypto_ahash_setkey(struct crypto_ahash *tfm, const u8 *key, + unsigned int keylen); +int crypto_ahash_finup(struct ahash_request *req); +int crypto_ahash_final(struct ahash_request *req); +int crypto_ahash_digest(struct ahash_request *req); -static inline int crypto_ahash_digest(struct ahash_request *req) +static inline int crypto_ahash_export(struct ahash_request *req, void *out) { - struct ahash_tfm *crt = crypto_ahash_crt(crypto_ahash_reqtfm(req)); - return crt->digest(req); + return crypto_ahash_reqtfm(req)->export(req, out); } -static inline void crypto_ahash_export(struct ahash_request *req, u8 *out) +static inline int crypto_ahash_import(struct ahash_request *req, const void *in) { - memcpy(out, ahash_request_ctx(req), - crypto_ahash_reqsize(crypto_ahash_reqtfm(req))); + return crypto_ahash_reqtfm(req)->import(req, in); } -int crypto_ahash_import(struct ahash_request *req, const u8 *in); - static inline int crypto_ahash_init(struct ahash_request *req) { - struct ahash_tfm *crt = crypto_ahash_crt(crypto_ahash_reqtfm(req)); - return crt->init(req); + return crypto_ahash_reqtfm(req)->init(req); } static inline int crypto_ahash_update(struct ahash_request *req) { - struct ahash_tfm *crt = crypto_ahash_crt(crypto_ahash_reqtfm(req)); - return crt->update(req); -} - -static inline int crypto_ahash_final(struct ahash_request *req) -{ - struct ahash_tfm *crt = crypto_ahash_crt(crypto_ahash_reqtfm(req)); - return crt->final(req); + return crypto_ahash_reqtfm(req)->update(req); } static inline void ahash_request_set_tfm(struct ahash_request *req, @@ -184,7 +227,7 @@ static inline struct ahash_request *ahash_request_alloc( static inline void ahash_request_free(struct ahash_request *req) { - kfree(req); + kzfree(req); } static inline struct ahash_request *ahash_request_cast( @@ -251,6 +294,11 @@ static inline unsigned int crypto_shash_digestsize(struct crypto_shash *tfm) return crypto_shash_alg(tfm)->digestsize; } +static inline unsigned int crypto_shash_statesize(struct crypto_shash *tfm) +{ + return crypto_shash_alg(tfm)->statesize; +} + static inline u32 crypto_shash_get_flags(struct crypto_shash *tfm) { return crypto_tfm_get_flags(crypto_shash_tfm(tfm)); @@ -268,7 +316,7 @@ static inline void crypto_shash_clear_flags(struct crypto_shash *tfm, u32 flags) static inline unsigned int crypto_shash_descsize(struct crypto_shash *tfm) { - return crypto_shash_alg(tfm)->descsize; + return tfm->descsize; } static inline void *shash_desc_ctx(struct shash_desc *desc) @@ -281,12 +329,15 @@ int crypto_shash_setkey(struct crypto_shash *tfm, const u8 *key, int crypto_shash_digest(struct shash_desc *desc, const u8 *data, unsigned int len, u8 *out); -static inline void crypto_shash_export(struct shash_desc *desc, u8 *out) +static inline int crypto_shash_export(struct shash_desc *desc, void *out) { - memcpy(out, shash_desc_ctx(desc), crypto_shash_descsize(desc->tfm)); + return crypto_shash_alg(desc->tfm)->export(desc, out); } -int crypto_shash_import(struct shash_desc *desc, const u8 *in); +static inline int crypto_shash_import(struct shash_desc *desc, const void *in) +{ + return crypto_shash_alg(desc->tfm)->import(desc, in); +} static inline int crypto_shash_init(struct shash_desc *desc) { diff --git a/include/crypto/internal/hash.h b/include/crypto/internal/hash.h index 82b70564bcab..5bfad8c80595 100644 --- a/include/crypto/internal/hash.h +++ b/include/crypto/internal/hash.h @@ -34,6 +34,22 @@ struct crypto_hash_walk { unsigned int flags; }; +struct ahash_instance { + struct ahash_alg alg; +}; + +struct shash_instance { + struct shash_alg alg; +}; + +struct crypto_ahash_spawn { + struct crypto_spawn base; +}; + +struct crypto_shash_spawn { + struct crypto_spawn base; +}; + extern const struct crypto_type crypto_ahash_type; int crypto_hash_walk_done(struct crypto_hash_walk *walk, int err); @@ -43,18 +59,100 @@ int crypto_hash_walk_first_compat(struct hash_desc *hdesc, struct crypto_hash_walk *walk, struct scatterlist *sg, unsigned int len); +static inline int crypto_hash_walk_last(struct crypto_hash_walk *walk) +{ + return !(walk->entrylen | walk->total); +} + +int crypto_register_ahash(struct ahash_alg *alg); +int crypto_unregister_ahash(struct ahash_alg *alg); +int ahash_register_instance(struct crypto_template *tmpl, + struct ahash_instance *inst); +void ahash_free_instance(struct crypto_instance *inst); + +int crypto_init_ahash_spawn(struct crypto_ahash_spawn *spawn, + struct hash_alg_common *alg, + struct crypto_instance *inst); + +static inline void crypto_drop_ahash(struct crypto_ahash_spawn *spawn) +{ + crypto_drop_spawn(&spawn->base); +} + +struct hash_alg_common *ahash_attr_alg(struct rtattr *rta, u32 type, u32 mask); + int crypto_register_shash(struct shash_alg *alg); int crypto_unregister_shash(struct shash_alg *alg); +int shash_register_instance(struct crypto_template *tmpl, + struct shash_instance *inst); +void shash_free_instance(struct crypto_instance *inst); + +int crypto_init_shash_spawn(struct crypto_shash_spawn *spawn, + struct shash_alg *alg, + struct crypto_instance *inst); + +static inline void crypto_drop_shash(struct crypto_shash_spawn *spawn) +{ + crypto_drop_spawn(&spawn->base); +} + +struct shash_alg *shash_attr_alg(struct rtattr *rta, u32 type, u32 mask); + +int shash_ahash_update(struct ahash_request *req, struct shash_desc *desc); +int shash_ahash_finup(struct ahash_request *req, struct shash_desc *desc); +int shash_ahash_digest(struct ahash_request *req, struct shash_desc *desc); + +int crypto_init_shash_ops_async(struct crypto_tfm *tfm); static inline void *crypto_ahash_ctx(struct crypto_ahash *tfm) { - return crypto_tfm_ctx(&tfm->base); + return crypto_tfm_ctx(crypto_ahash_tfm(tfm)); +} + +static inline struct ahash_alg *__crypto_ahash_alg(struct crypto_alg *alg) +{ + return container_of(__crypto_hash_alg_common(alg), struct ahash_alg, + halg); +} + +static inline void crypto_ahash_set_reqsize(struct crypto_ahash *tfm, + unsigned int reqsize) +{ + tfm->reqsize = reqsize; +} + +static inline struct crypto_instance *ahash_crypto_instance( + struct ahash_instance *inst) +{ + return container_of(&inst->alg.halg.base, struct crypto_instance, alg); } -static inline struct ahash_alg *crypto_ahash_alg( - struct crypto_ahash *tfm) +static inline struct ahash_instance *ahash_instance( + struct crypto_instance *inst) { - return &crypto_ahash_tfm(tfm)->__crt_alg->cra_ahash; + return container_of(&inst->alg, struct ahash_instance, alg.halg.base); +} + +static inline void *ahash_instance_ctx(struct ahash_instance *inst) +{ + return crypto_instance_ctx(ahash_crypto_instance(inst)); +} + +static inline unsigned int ahash_instance_headroom(void) +{ + return sizeof(struct ahash_alg) - sizeof(struct crypto_alg); +} + +static inline struct ahash_instance *ahash_alloc_instance( + const char *name, struct crypto_alg *alg) +{ + return crypto_alloc_instance2(name, alg, ahash_instance_headroom()); +} + +static inline struct crypto_ahash *crypto_spawn_ahash( + struct crypto_ahash_spawn *spawn) +{ + return crypto_spawn_tfm2(&spawn->base); } static inline int ahash_enqueue_request(struct crypto_queue *queue, @@ -80,5 +178,46 @@ static inline void *crypto_shash_ctx(struct crypto_shash *tfm) return crypto_tfm_ctx(&tfm->base); } +static inline struct crypto_instance *shash_crypto_instance( + struct shash_instance *inst) +{ + return container_of(&inst->alg.base, struct crypto_instance, alg); +} + +static inline struct shash_instance *shash_instance( + struct crypto_instance *inst) +{ + return container_of(__crypto_shash_alg(&inst->alg), + struct shash_instance, alg); +} + +static inline void *shash_instance_ctx(struct shash_instance *inst) +{ + return crypto_instance_ctx(shash_crypto_instance(inst)); +} + +static inline struct shash_instance *shash_alloc_instance( + const char *name, struct crypto_alg *alg) +{ + return crypto_alloc_instance2(name, alg, + sizeof(struct shash_alg) - sizeof(*alg)); +} + +static inline struct crypto_shash *crypto_spawn_shash( + struct crypto_shash_spawn *spawn) +{ + return crypto_spawn_tfm2(&spawn->base); +} + +static inline void *crypto_shash_ctx_aligned(struct crypto_shash *tfm) +{ + return crypto_tfm_ctx_aligned(&tfm->base); +} + +static inline struct crypto_shash *__crypto_shash_cast(struct crypto_tfm *tfm) +{ + return container_of(tfm, struct crypto_shash, base); +} + #endif /* _CRYPTO_INTERNAL_HASH_H */ diff --git a/include/crypto/sha.h b/include/crypto/sha.h index c0ccc2b1a2d8..069e85ba97e1 100644 --- a/include/crypto/sha.h +++ b/include/crypto/sha.h @@ -5,6 +5,8 @@ #ifndef _CRYPTO_SHA_H #define _CRYPTO_SHA_H +#include <linux/types.h> + #define SHA1_DIGEST_SIZE 20 #define SHA1_BLOCK_SIZE 64 @@ -62,4 +64,22 @@ #define SHA512_H6 0x1f83d9abfb41bd6bULL #define SHA512_H7 0x5be0cd19137e2179ULL +struct sha1_state { + u64 count; + u32 state[SHA1_DIGEST_SIZE / 4]; + u8 buffer[SHA1_BLOCK_SIZE]; +}; + +struct sha256_state { + u64 count; + u32 state[SHA256_DIGEST_SIZE / 4]; + u8 buf[SHA256_BLOCK_SIZE]; +}; + +struct sha512_state { + u64 count[2]; + u64 state[SHA512_DIGEST_SIZE / 8]; + u8 buf[SHA512_BLOCK_SIZE]; +}; + #endif diff --git a/include/crypto/vmac.h b/include/crypto/vmac.h new file mode 100644 index 000000000000..c4467c55df1e --- /dev/null +++ b/include/crypto/vmac.h @@ -0,0 +1,61 @@ +/* + * Modified to interface to the Linux kernel + * Copyright (c) 2009, Intel Corporation. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope 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., 59 Temple + * Place - Suite 330, Boston, MA 02111-1307 USA. + */ + +#ifndef __CRYPTO_VMAC_H +#define __CRYPTO_VMAC_H + +/* -------------------------------------------------------------------------- + * VMAC and VHASH Implementation by Ted Krovetz (tdk@acm.org) and Wei Dai. + * This implementation is herby placed in the public domain. + * The authors offers no warranty. Use at your own risk. + * Please send bug reports to the authors. + * Last modified: 17 APR 08, 1700 PDT + * ----------------------------------------------------------------------- */ + +/* + * User definable settings. + */ +#define VMAC_TAG_LEN 64 +#define VMAC_KEY_SIZE 128/* Must be 128, 192 or 256 */ +#define VMAC_KEY_LEN (VMAC_KEY_SIZE/8) +#define VMAC_NHBYTES 128/* Must 2^i for any 3 < i < 13 Standard = 128*/ + +/* + * This implementation uses u32 and u64 as names for unsigned 32- + * and 64-bit integer types. These are defined in C99 stdint.h. The + * following may need adaptation if you are not running a C99 or + * Microsoft C environment. + */ +struct vmac_ctx { + u64 nhkey[(VMAC_NHBYTES/8)+2*(VMAC_TAG_LEN/64-1)]; + u64 polykey[2*VMAC_TAG_LEN/64]; + u64 l3key[2*VMAC_TAG_LEN/64]; + u64 polytmp[2*VMAC_TAG_LEN/64]; + u64 cached_nonce[2]; + u64 cached_aes[2]; + int first_block_processed; +}; + +typedef u64 vmac_t; + +struct vmac_ctx_t { + struct crypto_cipher *child; + struct vmac_ctx __vmac_ctx; +}; + +#endif /* __CRYPTO_VMAC_H */ |