alignbuffer = (u8 *)ALIGN((unsigned long)buffer, alignmask + 1);
memcpy(alignbuffer, key, keylen);
err = shash->setkey(tfm, alignbuffer, keylen);
- memset(alignbuffer, 0, keylen);
- kfree(buffer);
+ kzfree(buffer);
return err;
}
unsigned long alignmask = crypto_shash_alignmask(tfm);
unsigned int unaligned_len = alignmask + 1 -
((unsigned long)data & alignmask);
- u8 buf[shash_align_buffer_size(unaligned_len, alignmask)]
+ u8 ubuf[shash_align_buffer_size(unaligned_len, alignmask)]
__attribute__ ((aligned));
+ u8 *buf = PTR_ALIGN(&ubuf[0], alignmask + 1);
+ int err;
if (unaligned_len > len)
unaligned_len = len;
memcpy(buf, data, unaligned_len);
+ err = shash->update(desc, buf, unaligned_len);
+ memset(buf, 0, unaligned_len);
- return shash->update(desc, buf, unaligned_len) ?:
+ return err ?:
shash->update(desc, data + unaligned_len, len - unaligned_len);
}
unsigned long alignmask = crypto_shash_alignmask(tfm);
struct shash_alg *shash = crypto_shash_alg(tfm);
unsigned int ds = crypto_shash_digestsize(tfm);
- u8 buf[shash_align_buffer_size(ds, alignmask)]
+ u8 ubuf[shash_align_buffer_size(ds, alignmask)]
__attribute__ ((aligned));
+ u8 *buf = PTR_ALIGN(&ubuf[0], alignmask + 1);
int err;
err = shash->final(desc, buf);
+ if (err)
+ goto out;
+
memcpy(out, buf, ds);
+
+out:
+ memset(buf, 0, ds);
return err;
}
}
EXPORT_SYMBOL_GPL(crypto_shash_digest);
-static int shash_no_export(struct shash_desc *desc, void *out)
+static int shash_default_export(struct shash_desc *desc, void *out)
{
- return -ENOSYS;
+ memcpy(out, shash_desc_ctx(desc), crypto_shash_descsize(desc->tfm));
+ return 0;
}
-static int shash_no_import(struct shash_desc *desc, const void *in)
+static int shash_default_import(struct shash_desc *desc, const void *in)
{
- return -ENOSYS;
+ memcpy(shash_desc_ctx(desc), in, crypto_shash_descsize(desc->tfm));
+ return 0;
}
static int shash_async_setkey(struct crypto_ahash *tfm, const u8 *key,
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_finup(struct ahash_request *req, struct shash_desc *desc)
+{
+ struct crypto_hash_walk walk;
+ int nbytes;
+
+ nbytes = crypto_hash_walk_first(req, &walk);
+ if (!nbytes)
+ return crypto_shash_final(desc, req->result);
+
+ do {
+ nbytes = crypto_hash_walk_last(&walk) ?
+ crypto_shash_finup(desc, walk.data, nbytes,
+ req->result) :
+ crypto_shash_update(desc, walk.data, nbytes);
+ nbytes = crypto_hash_walk_done(&walk, nbytes);
+ } while (nbytes > 0);
+
+ return nbytes;
+}
+EXPORT_SYMBOL_GPL(shash_ahash_finup);
+
+static int shash_async_finup(struct ahash_request *req)
+{
+ struct crypto_shash **ctx = crypto_ahash_ctx(crypto_ahash_reqtfm(req));
+ struct shash_desc *desc = ahash_request_ctx(req);
+
+ desc->tfm = *ctx;
+ desc->flags = req->base.flags;
+
+ return shash_ahash_finup(req, desc);
+}
+
+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_finup(req, desc);
- 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 int shash_async_export(struct ahash_request *req, void *out)
+{
+ return crypto_shash_export(ahash_request_ctx(req), out);
+}
+
+static int shash_async_import(struct ahash_request *req, const void *in)
+{
+ return crypto_shash_import(ahash_request_ctx(req), in);
}
static void crypto_exit_shash_ops_async(struct crypto_tfm *tfm)
crypto_free_shash(*ctx);
}
-static int crypto_init_shash_ops_async(struct crypto_tfm *tfm)
+int crypto_init_shash_ops_async(struct crypto_tfm *tfm)
{
struct crypto_alg *calg = tfm->__crt_alg;
struct shash_alg *alg = __crypto_shash_alg(calg);
- struct ahash_tfm *crt = &tfm->crt_ahash;
+ struct crypto_ahash *crt = __crypto_ahash_cast(tfm);
struct crypto_shash **ctx = crypto_tfm_ctx(tfm);
struct crypto_shash *shash;
crt->init = shash_async_init;
crt->update = shash_async_update;
- crt->final = shash_async_final;
+ crt->final = shash_async_final;
+ crt->finup = shash_async_finup;
crt->digest = shash_async_digest;
- crt->setkey = shash_async_setkey;
- crt->digestsize = alg->digestsize;
+ if (alg->setkey)
+ crt->setkey = shash_async_setkey;
+ if (alg->export)
+ crt->export = shash_async_export;
+ if (alg->import)
+ crt->import = shash_async_import;
+
crt->reqsize = sizeof(struct shash_desc) + crypto_shash_descsize(shash);
return 0;
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);
}
return -EINVAL;
switch (mask & CRYPTO_ALG_TYPE_MASK) {
case CRYPTO_ALG_TYPE_HASH_MASK:
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);
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;
}
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->export) {
+ alg->export = shash_default_export;
+ alg->import = shash_default_import;
+ alg->statesize = alg->descsize;
+ }
if (!alg->setkey)
alg->setkey = shash_no_setkey;
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff