* (at your option) any later version.
*
*/
+
+#include <crypto/internal/hash.h>
+#include <crypto/internal/skcipher.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/mm.h>
-#include <asm/scatterlist.h>
-#include <linux/crypto.h>
#include <linux/string.h>
#define NULL_KEY_SIZE 0
#define NULL_BLOCK_SIZE 1
#define NULL_DIGEST_SIZE 0
+#define NULL_IV_SIZE 0
-static int null_compress(void *ctx, const u8 *src, unsigned int slen,
- u8 *dst, unsigned int *dlen)
+static int null_compress(struct crypto_tfm *tfm, const u8 *src,
+ unsigned int slen, u8 *dst, unsigned int *dlen)
{
if (slen > *dlen)
return -EINVAL;
return 0;
}
-static void null_init(void *ctx)
-{ }
+static int null_init(struct shash_desc *desc)
+{
+ return 0;
+}
-static void null_update(void *ctx, 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(void *ctx, u8 *out)
-{ }
+static int null_final(struct shash_desc *desc, u8 *out)
+{
+ return 0;
+}
-static int null_setkey(void *ctx, const u8 *key,
- unsigned int keylen, u32 *flags)
+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)
{ return 0; }
-static void null_crypt(void *ctx, u8 *dst, const u8 *src)
+static void null_crypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
{
memcpy(dst, src, NULL_BLOCK_SIZE);
}
+static int skcipher_null_crypt(struct blkcipher_desc *desc,
+ struct scatterlist *dst,
+ struct scatterlist *src, unsigned int nbytes)
+{
+ struct blkcipher_walk walk;
+ int err;
+
+ blkcipher_walk_init(&walk, dst, src, nbytes);
+ err = blkcipher_walk_virt(desc, &walk);
+
+ while (walk.nbytes) {
+ if (walk.src.virt.addr != walk.dst.virt.addr)
+ memcpy(walk.dst.virt.addr, walk.src.virt.addr,
+ walk.nbytes);
+ err = blkcipher_walk_done(desc, &walk, 0);
+ }
+
+ return err;
+}
+
static struct crypto_alg compress_null = {
.cra_name = "compress_null",
.cra_flags = CRYPTO_ALG_TYPE_COMPRESS,
.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_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 = {
.cia_decrypt = null_crypt } }
};
+static struct crypto_alg skcipher_null = {
+ .cra_name = "ecb(cipher_null)",
+ .cra_driver_name = "ecb-cipher_null",
+ .cra_priority = 100,
+ .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER,
+ .cra_blocksize = NULL_BLOCK_SIZE,
+ .cra_type = &crypto_blkcipher_type,
+ .cra_ctxsize = 0,
+ .cra_module = THIS_MODULE,
+ .cra_list = LIST_HEAD_INIT(skcipher_null.cra_list),
+ .cra_u = { .blkcipher = {
+ .min_keysize = NULL_KEY_SIZE,
+ .max_keysize = NULL_KEY_SIZE,
+ .ivsize = NULL_IV_SIZE,
+ .setkey = null_setkey,
+ .encrypt = skcipher_null_crypt,
+ .decrypt = skcipher_null_crypt } }
+};
+
MODULE_ALIAS("compress_null");
MODULE_ALIAS("digest_null");
MODULE_ALIAS("cipher_null");
-static int __init init(void)
+static int __init crypto_null_mod_init(void)
{
int ret = 0;
if (ret < 0)
goto out;
- ret = crypto_register_alg(&digest_null);
- if (ret < 0) {
- crypto_unregister_alg(&cipher_null);
- goto out;
- }
+ ret = crypto_register_alg(&skcipher_null);
+ if (ret < 0)
+ goto out_unregister_cipher;
+
+ ret = crypto_register_shash(&digest_null);
+ if (ret < 0)
+ goto out_unregister_skcipher;
ret = crypto_register_alg(&compress_null);
- if (ret < 0) {
- crypto_unregister_alg(&digest_null);
- crypto_unregister_alg(&cipher_null);
- goto out;
- }
+ if (ret < 0)
+ goto out_unregister_digest;
out:
return ret;
+
+out_unregister_digest:
+ crypto_unregister_shash(&digest_null);
+out_unregister_skcipher:
+ crypto_unregister_alg(&skcipher_null);
+out_unregister_cipher:
+ crypto_unregister_alg(&cipher_null);
+ goto out;
}
-static void __exit fini(void)
+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);
}
-module_init(init);
-module_exit(fini);
+module_init(crypto_null_mod_init);
+module_exit(crypto_null_mod_fini);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Null Cryptographic Algorithms");
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff