static const struct crypto_type crypto_shash_type;
+static int shash_no_setkey(struct crypto_shash *tfm, const u8 *key,
+ unsigned int keylen)
+{
+ return -ENOSYS;
+}
+
static int shash_setkey_unaligned(struct crypto_shash *tfm, const u8 *key,
unsigned int keylen)
{
struct shash_alg *shash = crypto_shash_alg(tfm);
unsigned long alignmask = crypto_shash_alignmask(tfm);
- if (!shash->setkey)
- return -ENOSYS;
-
if ((unsigned long)key & alignmask)
return shash_setkey_unaligned(tfm, key, keylen);
struct shash_alg *shash = crypto_shash_alg(tfm);
unsigned long alignmask = crypto_shash_alignmask(tfm);
- if (((unsigned long)data | (unsigned long)out) & alignmask ||
- !shash->finup)
+ if (((unsigned long)data | (unsigned long)out) & alignmask)
return shash_finup_unaligned(desc, data, len, out);
return shash->finup(desc, data, len, out);
unsigned int len, u8 *out)
{
return crypto_shash_init(desc) ?:
- crypto_shash_update(desc, data, len) ?:
- crypto_shash_final(desc, out);
+ crypto_shash_finup(desc, data, len, out);
}
int crypto_shash_digest(struct shash_desc *desc, const u8 *data,
struct shash_alg *shash = crypto_shash_alg(tfm);
unsigned long alignmask = crypto_shash_alignmask(tfm);
- if (((unsigned long)data | (unsigned long)out) & alignmask ||
- !shash->digest)
+ if (((unsigned long)data | (unsigned long)out) & alignmask)
return shash_digest_unaligned(desc, data, len, out);
return shash->digest(desc, data, len, out);
}
EXPORT_SYMBOL_GPL(crypto_shash_digest);
-int crypto_shash_import(struct shash_desc *desc, const u8 *in)
+static int shash_no_export(struct shash_desc *desc, void *out)
{
- struct crypto_shash *tfm = desc->tfm;
- struct shash_alg *alg = crypto_shash_alg(tfm);
-
- memcpy(shash_desc_ctx(desc), in, crypto_shash_descsize(tfm));
-
- if (alg->reinit)
- alg->reinit(desc);
+ return -ENOSYS;
+}
- return 0;
+static int shash_no_import(struct shash_desc *desc, const void *in)
+{
+ return -ENOSYS;
}
-EXPORT_SYMBOL_GPL(crypto_shash_import);
static int shash_async_setkey(struct crypto_ahash *tfm, const u8 *key,
unsigned int keylen)
return crypto_shash_init(desc);
}
-static int shash_async_update(struct ahash_request *req)
+int shash_ahash_update(struct ahash_request *req, struct shash_desc *desc)
{
- struct shash_desc *desc = ahash_request_ctx(req);
struct crypto_hash_walk walk;
int nbytes;
return nbytes;
}
+EXPORT_SYMBOL_GPL(shash_ahash_update);
+
+static int shash_async_update(struct ahash_request *req)
+{
+ return shash_ahash_update(req, ahash_request_ctx(req));
+}
static int shash_async_final(struct ahash_request *req)
{
return crypto_shash_final(ahash_request_ctx(req), req->result);
}
-static int shash_async_digest(struct ahash_request *req)
+int shash_ahash_digest(struct ahash_request *req, struct shash_desc *desc)
{
struct scatterlist *sg = req->src;
unsigned int offset = sg->offset;
int err;
if (nbytes < min(sg->length, ((unsigned int)(PAGE_SIZE)) - offset)) {
- struct crypto_shash **ctx =
- crypto_ahash_ctx(crypto_ahash_reqtfm(req));
- struct shash_desc *desc = ahash_request_ctx(req);
void *data;
- desc->tfm = *ctx;
- desc->flags = req->base.flags;
-
data = crypto_kmap(sg_page(sg), 0);
err = crypto_shash_digest(desc, data + offset, nbytes,
req->result);
crypto_kunmap(data, 0);
crypto_yield(desc->flags);
- goto out;
- }
+ } else
+ err = crypto_shash_init(desc) ?:
+ shash_ahash_update(req, desc) ?:
+ crypto_shash_final(desc, req->result);
- err = shash_async_init(req);
- if (err)
- goto out;
+ return err;
+}
+EXPORT_SYMBOL_GPL(shash_ahash_digest);
- err = shash_async_update(req);
- if (err)
- goto out;
+static int shash_async_digest(struct ahash_request *req)
+{
+ struct crypto_shash **ctx = crypto_ahash_ctx(crypto_ahash_reqtfm(req));
+ struct shash_desc *desc = ahash_request_ctx(req);
- err = shash_async_final(req);
+ desc->tfm = *ctx;
+ desc->flags = req->base.flags;
-out:
- return err;
+ return shash_ahash_digest(req, desc);
}
static void crypto_exit_shash_ops_async(struct crypto_tfm *tfm)
static int shash_compat_setkey(struct crypto_hash *tfm, const u8 *key,
unsigned int keylen)
{
- struct shash_desc *desc = crypto_hash_ctx(tfm);
+ struct shash_desc **descp = crypto_hash_ctx(tfm);
+ struct shash_desc *desc = *descp;
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);
+ struct shash_desc **descp = crypto_hash_ctx(hdesc->tfm);
+ struct shash_desc *desc = *descp;
desc->flags = hdesc->flags;
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 shash_desc **descp = crypto_hash_ctx(hdesc->tfm);
+ struct shash_desc *desc = *descp;
struct crypto_hash_walk walk;
int nbytes;
static int shash_compat_final(struct hash_desc *hdesc, u8 *out)
{
- return crypto_shash_final(crypto_hash_ctx(hdesc->tfm), out);
+ struct shash_desc **descp = crypto_hash_ctx(hdesc->tfm);
+
+ return crypto_shash_final(*descp, out);
}
static int shash_compat_digest(struct hash_desc *hdesc, struct scatterlist *sg,
int err;
if (nbytes < min(sg->length, ((unsigned int)(PAGE_SIZE)) - offset)) {
- struct shash_desc *desc = crypto_hash_ctx(hdesc->tfm);
+ struct shash_desc **descp = crypto_hash_ctx(hdesc->tfm);
+ struct shash_desc *desc = *descp;
void *data;
desc->flags = hdesc->flags;
static void crypto_exit_shash_ops_compat(struct crypto_tfm *tfm)
{
- struct shash_desc *desc= crypto_tfm_ctx(tfm);
+ struct shash_desc **descp = crypto_tfm_ctx(tfm);
+ struct shash_desc *desc = *descp;
crypto_free_shash(desc->tfm);
+ kzfree(desc);
}
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 shash_desc **descp = crypto_tfm_ctx(tfm);
struct crypto_shash *shash;
+ struct shash_desc *desc;
if (!crypto_mod_get(calg))
return -EAGAIN;
return PTR_ERR(shash);
}
+ desc = kmalloc(sizeof(*desc) + crypto_shash_descsize(shash),
+ GFP_KERNEL);
+ if (!desc) {
+ crypto_free_shash(shash);
+ return -ENOMEM;
+ }
+
+ *descp = desc;
desc->tfm = shash;
tfm->exit = crypto_exit_shash_ops_compat;
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;
+ return sizeof(struct shash_desc *);
case CRYPTO_ALG_TYPE_AHASH_MASK:
return sizeof(struct crypto_shash *);
}
return 0;
}
-static int crypto_shash_init_tfm(struct crypto_tfm *tfm,
- const struct crypto_type *frontend)
+static int crypto_shash_init_tfm(struct crypto_tfm *tfm)
{
+ struct crypto_shash *hash = __crypto_shash_cast(tfm);
+
+ hash->descsize = crypto_shash_alg(hash)->descsize;
return 0;
}
-static unsigned int crypto_shash_extsize(struct crypto_alg *alg,
- const struct crypto_type *frontend)
+static unsigned int crypto_shash_extsize(struct crypto_alg *alg)
{
return alg->cra_ctxsize;
}
seq_printf(m, "type : shash\n");
seq_printf(m, "blocksize : %u\n", alg->cra_blocksize);
seq_printf(m, "digestsize : %u\n", salg->digestsize);
- seq_printf(m, "descsize : %u\n", salg->descsize);
}
static const struct crypto_type crypto_shash_type = {
}
EXPORT_SYMBOL_GPL(crypto_alloc_shash);
-int crypto_register_shash(struct shash_alg *alg)
+static int shash_prepare_alg(struct shash_alg *alg)
{
struct crypto_alg *base = &alg->base;
if (alg->digestsize > PAGE_SIZE / 8 ||
- alg->descsize > PAGE_SIZE / 8)
+ alg->descsize > PAGE_SIZE / 8 ||
+ alg->statesize > PAGE_SIZE / 8)
return -EINVAL;
base->cra_type = &crypto_shash_type;
base->cra_flags &= ~CRYPTO_ALG_TYPE_MASK;
base->cra_flags |= CRYPTO_ALG_TYPE_SHASH;
+ if (!alg->finup)
+ alg->finup = shash_finup_unaligned;
+ if (!alg->digest)
+ alg->digest = shash_digest_unaligned;
+ if (!alg->import)
+ alg->import = shash_no_import;
+ if (!alg->export)
+ alg->export = shash_no_export;
+ if (!alg->setkey)
+ alg->setkey = shash_no_setkey;
+
+ return 0;
+}
+
+int crypto_register_shash(struct shash_alg *alg)
+{
+ struct crypto_alg *base = &alg->base;
+ int err;
+
+ err = shash_prepare_alg(alg);
+ if (err)
+ return err;
+
return crypto_register_alg(base);
}
EXPORT_SYMBOL_GPL(crypto_register_shash);
}
EXPORT_SYMBOL_GPL(crypto_unregister_shash);
+int shash_register_instance(struct crypto_template *tmpl,
+ struct shash_instance *inst)
+{
+ int err;
+
+ err = shash_prepare_alg(&inst->alg);
+ if (err)
+ return err;
+
+ return crypto_register_instance(tmpl, shash_crypto_instance(inst));
+}
+EXPORT_SYMBOL_GPL(shash_register_instance);
+
+void shash_free_instance(struct crypto_instance *inst)
+{
+ crypto_drop_spawn(crypto_instance_ctx(inst));
+ kfree(shash_instance(inst));
+}
+EXPORT_SYMBOL_GPL(shash_free_instance);
+
+int crypto_init_shash_spawn(struct crypto_shash_spawn *spawn,
+ struct shash_alg *alg,
+ struct crypto_instance *inst)
+{
+ return crypto_init_spawn2(&spawn->base, &alg->base, inst,
+ &crypto_shash_type);
+}
+EXPORT_SYMBOL_GPL(crypto_init_shash_spawn);
+
+struct shash_alg *shash_attr_alg(struct rtattr *rta, u32 type, u32 mask)
+{
+ struct crypto_alg *alg;
+
+ alg = crypto_attr_alg2(rta, &crypto_shash_type, type, mask);
+ return IS_ERR(alg) ? ERR_CAST(alg) :
+ container_of(alg, struct shash_alg, base);
+}
+EXPORT_SYMBOL_GPL(shash_attr_alg);
+
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Synchronous cryptographic hash type");
projects / firefly-linux-kernel-4.4.55.git / blobdiff