diff options
Diffstat (limited to 'crypto')
| -rw-r--r-- | crypto/ahash.c | 16 | ||||
| -rw-r--r-- | crypto/authenc.c | 3 | ||||
| -rw-r--r-- | crypto/hmac.c | 10 | ||||
| -rw-r--r-- | crypto/shash.c | 109 |
4 files changed, 134 insertions, 4 deletions
diff --git a/crypto/ahash.c b/crypto/ahash.c index 7d4e33dfe212..9f98956b17fc 100644 --- a/crypto/ahash.c +++ b/crypto/ahash.c @@ -112,6 +112,22 @@ int crypto_hash_walk_first(struct ahash_request *req, } EXPORT_SYMBOL_GPL(crypto_hash_walk_first); +int crypto_hash_walk_first_compat(struct hash_desc *hdesc, + struct crypto_hash_walk *walk, + struct scatterlist *sg, unsigned int len) +{ + walk->total = len; + + if (!walk->total) + return 0; + + walk->alignmask = crypto_hash_alignmask(hdesc->tfm); + walk->sg = sg; + walk->flags = hdesc->flags; + + return hash_walk_new_entry(walk); +} + static int ahash_setkey_unaligned(struct crypto_ahash *tfm, const u8 *key, unsigned int keylen) { diff --git a/crypto/authenc.c b/crypto/authenc.c index fd9f06c63d76..40b6e9ec9e3a 100644 --- a/crypto/authenc.c +++ b/crypto/authenc.c @@ -11,6 +11,7 @@ */ #include <crypto/aead.h> +#include <crypto/internal/hash.h> #include <crypto/internal/skcipher.h> #include <crypto/authenc.h> #include <crypto/scatterwalk.h> @@ -431,6 +432,8 @@ static struct crypto_instance *crypto_authenc_alloc(struct rtattr **tb) inst->alg.cra_aead.ivsize = enc->cra_ablkcipher.ivsize; inst->alg.cra_aead.maxauthsize = auth->cra_type == &crypto_hash_type ? auth->cra_hash.digestsize : + auth->cra_type ? + __crypto_shash_alg(auth)->digestsize : auth->cra_digest.dia_digestsize; inst->alg.cra_ctxsize = sizeof(struct crypto_authenc_ctx); diff --git a/crypto/hmac.c b/crypto/hmac.c index 7ff2d6a8c7d0..0ad39c374963 100644 --- a/crypto/hmac.c +++ b/crypto/hmac.c @@ -16,7 +16,7 @@ * */ -#include <crypto/algapi.h> +#include <crypto/internal/hash.h> #include <crypto/scatterwalk.h> #include <linux/err.h> #include <linux/init.h> @@ -238,9 +238,11 @@ static struct crypto_instance *hmac_alloc(struct rtattr **tb) return ERR_CAST(alg); inst = ERR_PTR(-EINVAL); - ds = (alg->cra_flags & CRYPTO_ALG_TYPE_MASK) == - CRYPTO_ALG_TYPE_HASH ? alg->cra_hash.digestsize : - alg->cra_digest.dia_digestsize; + ds = alg->cra_type == &crypto_hash_type ? + alg->cra_hash.digestsize : + alg->cra_type ? + __crypto_shash_alg(alg)->digestsize : + alg->cra_digest.dia_digestsize; if (ds > alg->cra_blocksize) goto out_put_alg; diff --git a/crypto/shash.c b/crypto/shash.c index 26aff3feefc0..50d69a4e4b61 100644 --- a/crypto/shash.c +++ b/crypto/shash.c @@ -301,9 +301,114 @@ static int crypto_init_shash_ops_async(struct crypto_tfm *tfm) return 0; } +static int shash_compat_setkey(struct crypto_hash *tfm, const u8 *key, + unsigned int keylen) +{ + struct shash_desc *desc = crypto_hash_ctx(tfm); + + return crypto_shash_setkey(desc->tfm, key, keylen); +} + +static int shash_compat_init(struct hash_desc *hdesc) +{ + struct shash_desc *desc = crypto_hash_ctx(hdesc->tfm); + + desc->flags = hdesc->flags; + + return crypto_shash_init(desc); +} + +static int shash_compat_update(struct hash_desc *hdesc, struct scatterlist *sg, + unsigned int len) +{ + struct shash_desc *desc = crypto_hash_ctx(hdesc->tfm); + struct crypto_hash_walk walk; + int nbytes; + + for (nbytes = crypto_hash_walk_first_compat(hdesc, &walk, sg, len); + nbytes > 0; nbytes = crypto_hash_walk_done(&walk, nbytes)) + nbytes = crypto_shash_update(desc, walk.data, nbytes); + + return nbytes; +} + +static int shash_compat_final(struct hash_desc *hdesc, u8 *out) +{ + return crypto_shash_final(crypto_hash_ctx(hdesc->tfm), out); +} + +static int shash_compat_digest(struct hash_desc *hdesc, struct scatterlist *sg, + unsigned int nbytes, u8 *out) +{ + unsigned int offset = sg->offset; + int err; + + if (nbytes < min(sg->length, ((unsigned int)(PAGE_SIZE)) - offset)) { + struct shash_desc *desc = crypto_hash_ctx(hdesc->tfm); + void *data; + + desc->flags = hdesc->flags; + + data = crypto_kmap(sg_page(sg), 0); + err = crypto_shash_digest(desc, data + offset, nbytes, out); + crypto_kunmap(data, 0); + crypto_yield(desc->flags); + goto out; + } + + err = shash_compat_init(hdesc); + if (err) + goto out; + + err = shash_compat_update(hdesc, sg, nbytes); + if (err) + goto out; + + err = shash_compat_final(hdesc, out); + +out: + return err; +} + +static void crypto_exit_shash_ops_compat(struct crypto_tfm *tfm) +{ + struct shash_desc *desc= crypto_tfm_ctx(tfm); + + crypto_free_shash(desc->tfm); +} + +static int crypto_init_shash_ops_compat(struct crypto_tfm *tfm) +{ + struct hash_tfm *crt = &tfm->crt_hash; + struct crypto_alg *calg = tfm->__crt_alg; + struct shash_alg *alg = __crypto_shash_alg(calg); + struct shash_desc *desc = crypto_tfm_ctx(tfm); + struct crypto_shash *shash; + + shash = __crypto_shash_cast(crypto_create_tfm( + calg, &crypto_shash_type)); + if (IS_ERR(shash)) + return PTR_ERR(shash); + + desc->tfm = shash; + tfm->exit = crypto_exit_shash_ops_compat; + + crt->init = shash_compat_init; + crt->update = shash_compat_update; + crt->final = shash_compat_final; + crt->digest = shash_compat_digest; + crt->setkey = shash_compat_setkey; + + crt->digestsize = alg->digestsize; + + return 0; +} + static int crypto_init_shash_ops(struct crypto_tfm *tfm, u32 type, u32 mask) { switch (mask & CRYPTO_ALG_TYPE_MASK) { + case CRYPTO_ALG_TYPE_HASH_MASK: + return crypto_init_shash_ops_compat(tfm); case CRYPTO_ALG_TYPE_AHASH_MASK: return crypto_init_shash_ops_async(tfm); } @@ -314,7 +419,11 @@ static int crypto_init_shash_ops(struct crypto_tfm *tfm, u32 type, u32 mask) static unsigned int crypto_shash_ctxsize(struct crypto_alg *alg, u32 type, u32 mask) { + struct shash_alg *salg = __crypto_shash_alg(alg); + switch (mask & CRYPTO_ALG_TYPE_MASK) { + case CRYPTO_ALG_TYPE_HASH_MASK: + return sizeof(struct shash_desc) + salg->descsize; case CRYPTO_ALG_TYPE_AHASH_MASK: return sizeof(struct crypto_shash *); } |