* any later version.
*/
+#include <crypto/internal/hash.h>
#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/module.h>
+#include <linux/slab.h>
#include <linux/seq_file.h>
#include "internal.h"
return alg->cra_ctxsize;
}
-static int crypto_init_hash_ops(struct crypto_tfm *tfm, u32 type, u32 mask)
+static int hash_setkey_unaligned(struct crypto_hash *crt, const u8 *key,
+ unsigned int keylen)
{
- struct hash_tfm *crt = &tfm->crt_hash;
+ struct crypto_tfm *tfm = crypto_hash_tfm(crt);
struct hash_alg *alg = &tfm->__crt_alg->cra_hash;
+ unsigned long alignmask = crypto_hash_alignmask(crt);
+ int ret;
+ u8 *buffer, *alignbuffer;
+ unsigned long absize;
- if (alg->digestsize > crypto_tfm_alg_blocksize(tfm))
- return -EINVAL;
+ absize = keylen + alignmask;
+ buffer = kmalloc(absize, GFP_ATOMIC);
+ if (!buffer)
+ return -ENOMEM;
+
+ alignbuffer = (u8 *)ALIGN((unsigned long)buffer, alignmask + 1);
+ memcpy(alignbuffer, key, keylen);
+ ret = alg->setkey(crt, alignbuffer, keylen);
+ memset(alignbuffer, 0, keylen);
+ kfree(buffer);
+ return ret;
+}
+
+static int hash_setkey(struct crypto_hash *crt, const u8 *key,
+ unsigned int keylen)
+{
+ struct crypto_tfm *tfm = crypto_hash_tfm(crt);
+ struct hash_alg *alg = &tfm->__crt_alg->cra_hash;
+ unsigned long alignmask = crypto_hash_alignmask(crt);
+
+ if ((unsigned long)key & alignmask)
+ return hash_setkey_unaligned(crt, key, keylen);
+
+ return alg->setkey(crt, key, keylen);
+}
+
+static int hash_async_setkey(struct crypto_ahash *tfm_async, const u8 *key,
+ unsigned int keylen)
+{
+ struct crypto_tfm *tfm = crypto_ahash_tfm(tfm_async);
+ struct crypto_hash *tfm_hash = __crypto_hash_cast(tfm);
+ struct hash_alg *alg = &tfm->__crt_alg->cra_hash;
+
+ return alg->setkey(tfm_hash, key, keylen);
+}
+
+static int hash_async_init(struct ahash_request *req)
+{
+ struct crypto_tfm *tfm = req->base.tfm;
+ struct hash_alg *alg = &tfm->__crt_alg->cra_hash;
+ struct hash_desc desc = {
+ .tfm = __crypto_hash_cast(tfm),
+ .flags = req->base.flags,
+ };
+
+ return alg->init(&desc);
+}
+
+static int hash_async_update(struct ahash_request *req)
+{
+ struct crypto_tfm *tfm = req->base.tfm;
+ struct hash_alg *alg = &tfm->__crt_alg->cra_hash;
+ struct hash_desc desc = {
+ .tfm = __crypto_hash_cast(tfm),
+ .flags = req->base.flags,
+ };
+
+ return alg->update(&desc, req->src, req->nbytes);
+}
+
+static int hash_async_final(struct ahash_request *req)
+{
+ struct crypto_tfm *tfm = req->base.tfm;
+ struct hash_alg *alg = &tfm->__crt_alg->cra_hash;
+ struct hash_desc desc = {
+ .tfm = __crypto_hash_cast(tfm),
+ .flags = req->base.flags,
+ };
- crt->init = alg->init;
- crt->update = alg->update;
- crt->final = alg->final;
- crt->digest = alg->digest;
- crt->setkey = alg->setkey;
+ return alg->final(&desc, req->result);
+}
+
+static int hash_async_digest(struct ahash_request *req)
+{
+ struct crypto_tfm *tfm = req->base.tfm;
+ struct hash_alg *alg = &tfm->__crt_alg->cra_hash;
+ struct hash_desc desc = {
+ .tfm = __crypto_hash_cast(tfm),
+ .flags = req->base.flags,
+ };
+
+ return alg->digest(&desc, req->src, req->nbytes, req->result);
+}
+
+static int crypto_init_hash_ops_async(struct crypto_tfm *tfm)
+{
+ struct ahash_tfm *crt = &tfm->crt_ahash;
+ struct hash_alg *alg = &tfm->__crt_alg->cra_hash;
+
+ crt->init = hash_async_init;
+ crt->update = hash_async_update;
+ crt->final = hash_async_final;
+ crt->digest = hash_async_digest;
+ crt->setkey = hash_async_setkey;
crt->digestsize = alg->digestsize;
return 0;
}
+static int crypto_init_hash_ops_sync(struct crypto_tfm *tfm)
+{
+ struct hash_tfm *crt = &tfm->crt_hash;
+ struct hash_alg *alg = &tfm->__crt_alg->cra_hash;
+
+ crt->init = alg->init;
+ crt->update = alg->update;
+ crt->final = alg->final;
+ crt->digest = alg->digest;
+ crt->setkey = hash_setkey;
+ crt->digestsize = alg->digestsize;
+
+ return 0;
+}
+
+static int crypto_init_hash_ops(struct crypto_tfm *tfm, u32 type, u32 mask)
+{
+ struct hash_alg *alg = &tfm->__crt_alg->cra_hash;
+
+ if (alg->digestsize > PAGE_SIZE / 8)
+ return -EINVAL;
+
+ if ((mask & CRYPTO_ALG_TYPE_HASH_MASK) != CRYPTO_ALG_TYPE_HASH_MASK)
+ return crypto_init_hash_ops_async(tfm);
+ else
+ return crypto_init_hash_ops_sync(tfm);
+}
+
static void crypto_hash_show(struct seq_file *m, struct crypto_alg *alg)
__attribute__ ((unused));
static void crypto_hash_show(struct seq_file *m, struct crypto_alg *alg)