2008-12-01 13:47:15

by Herbert Xu

[permalink] [raw]
Subject: [PATCH 2/6] crypto: null - Switch to shash

crypto: null - Switch to shash

This patch changes digest_null to the new shash interface.

Signed-off-by: Herbert Xu <[email protected]>
---

crypto/crypto_null.c | 64 ++++++++++++++++++++++++++++++++-------------------
1 file changed, 41 insertions(+), 23 deletions(-)

diff --git a/crypto/crypto_null.c b/crypto/crypto_null.c
index 1f7d530..cb71c91 100644
--- a/crypto/crypto_null.c
+++ b/crypto/crypto_null.c
@@ -17,6 +17,7 @@
*
*/

+#include <crypto/internal/hash.h>
#include <crypto/internal/skcipher.h>
#include <linux/init.h>
#include <linux/module.h>
@@ -38,15 +39,31 @@ static int null_compress(struct crypto_tfm *tfm, const u8 *src,
return 0;
}

-static void null_init(struct crypto_tfm *tfm)
-{ }
+static int null_init(struct shash_desc *desc)
+{
+ return 0;
+}

-static void null_update(struct crypto_tfm *tfm, const u8 *data,
- unsigned int len)
-{ }
+static int null_update(struct shash_desc *desc, const u8 *data,
+ unsigned int len)
+{
+ return 0;
+}

-static void null_final(struct crypto_tfm *tfm, u8 *out)
-{ }
+static int null_final(struct shash_desc *desc, u8 *out)
+{
+ return 0;
+}
+
+static int null_digest(struct shash_desc *desc, const u8 *data,
+ unsigned int len, u8 *out)
+{
+ return 0;
+}
+
+static int null_hash_setkey(struct crypto_shash *tfm, const u8 *key,
+ unsigned int keylen)
+{ return 0; }

static int null_setkey(struct crypto_tfm *tfm, const u8 *key,
unsigned int keylen)
@@ -89,19 +106,20 @@ static struct crypto_alg compress_null = {
.coa_decompress = null_compress } }
};

-static struct crypto_alg digest_null = {
- .cra_name = "digest_null",
- .cra_flags = CRYPTO_ALG_TYPE_DIGEST,
- .cra_blocksize = NULL_BLOCK_SIZE,
- .cra_ctxsize = 0,
- .cra_module = THIS_MODULE,
- .cra_list = LIST_HEAD_INIT(digest_null.cra_list),
- .cra_u = { .digest = {
- .dia_digestsize = NULL_DIGEST_SIZE,
- .dia_setkey = null_setkey,
- .dia_init = null_init,
- .dia_update = null_update,
- .dia_final = null_final } }
+static struct shash_alg digest_null = {
+ .digestsize = NULL_DIGEST_SIZE,
+ .setkey = null_hash_setkey,
+ .init = null_init,
+ .update = null_update,
+ .finup = null_digest,
+ .digest = null_digest,
+ .final = null_final,
+ .base = {
+ .cra_name = "digest_null",
+ .cra_flags = CRYPTO_ALG_TYPE_SHASH,
+ .cra_blocksize = NULL_BLOCK_SIZE,
+ .cra_module = THIS_MODULE,
+ }
};

static struct crypto_alg cipher_null = {
@@ -154,7 +172,7 @@ static int __init crypto_null_mod_init(void)
if (ret < 0)
goto out_unregister_cipher;

- ret = crypto_register_alg(&digest_null);
+ ret = crypto_register_shash(&digest_null);
if (ret < 0)
goto out_unregister_skcipher;

@@ -166,7 +184,7 @@ out:
return ret;

out_unregister_digest:
- crypto_unregister_alg(&digest_null);
+ crypto_unregister_shash(&digest_null);
out_unregister_skcipher:
crypto_unregister_alg(&skcipher_null);
out_unregister_cipher:
@@ -177,7 +195,7 @@ out_unregister_cipher:
static void __exit crypto_null_mod_fini(void)
{
crypto_unregister_alg(&compress_null);
- crypto_unregister_alg(&digest_null);
+ crypto_unregister_shash(&digest_null);
crypto_unregister_alg(&skcipher_null);
crypto_unregister_alg(&cipher_null);
}