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nexedi
linux
Commits
1ca56ff2
Commit
1ca56ff2
authored
Nov 18, 2002
by
David S. Miller
Committed by
Jeff Garzik
Nov 18, 2002
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[CRYPTO]: Forgot to add crypto_null.c in previous commit.
parent
3c7707e0
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crypto/crypto_null.c
crypto/crypto_null.c
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crypto/crypto_null.c
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1ca56ff2
/*
* Cryptographic API.
*
* Null algorithms, aka Much Ado About Nothing.
*
* These are needed for IPsec, and may be useful in general for
* testing & debugging.
*
* The null cipher is compliant with RFC2410.
*
* Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
*/
#include <linux/init.h>
#include <linux/module.h>
#include <linux/mm.h>
#include <asm/scatterlist.h>
#include <linux/crypto.h>
#define NULL_KEY_SIZE 0
#define NULL_BLOCK_SIZE 1
#define NULL_DIGEST_SIZE 0
static
void
null_compress
(
void
)
{
}
static
void
null_decompress
(
void
)
{
}
static
void
null_init
(
void
*
ctx
)
{
}
static
void
null_update
(
void
*
ctx
,
const
u8
*
data
,
unsigned
int
len
)
{
}
static
void
null_final
(
void
*
ctx
,
u8
*
out
)
{
}
static
int
null_setkey
(
void
*
ctx
,
const
u8
*
key
,
unsigned
int
keylen
,
u32
*
flags
)
{
return
0
;
}
static
void
null_encrypt
(
void
*
ctx
,
u8
*
dst
,
const
u8
*
src
)
{
}
static
void
null_decrypt
(
void
*
ctx
,
u8
*
dst
,
const
u8
*
src
)
{
}
static
struct
crypto_alg
compress_null
=
{
.
cra_name
=
"compress_null"
,
.
cra_flags
=
CRYPTO_ALG_TYPE_COMPRESS
,
.
cra_blocksize
=
NULL_BLOCK_SIZE
,
.
cra_ctxsize
=
0
,
.
cra_module
=
THIS_MODULE
,
.
cra_list
=
LIST_HEAD_INIT
(
compress_null
.
cra_list
),
.
cra_u
=
{
.
compress
=
{
.
coa_compress
=
null_compress
,
.
coa_decompress
=
null_decompress
}
}
};
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
crypto_alg
cipher_null
=
{
.
cra_name
=
"cipher_null"
,
.
cra_flags
=
CRYPTO_ALG_TYPE_CIPHER
,
.
cra_blocksize
=
NULL_BLOCK_SIZE
,
.
cra_ctxsize
=
0
,
.
cra_module
=
THIS_MODULE
,
.
cra_list
=
LIST_HEAD_INIT
(
cipher_null
.
cra_list
),
.
cra_u
=
{
.
cipher
=
{
.
cia_min_keysize
=
NULL_KEY_SIZE
,
.
cia_max_keysize
=
NULL_KEY_SIZE
,
.
cia_ivsize
=
0
,
.
cia_setkey
=
null_setkey
,
.
cia_encrypt
=
null_encrypt
,
.
cia_decrypt
=
null_decrypt
}
}
};
static
int
__init
init
(
void
)
{
int
ret
=
0
;
ret
=
crypto_register_alg
(
&
cipher_null
);
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
(
&
compress_null
);
if
(
ret
<
0
)
{
crypto_unregister_alg
(
&
digest_null
);
crypto_unregister_alg
(
&
cipher_null
);
goto
out
;
}
out:
return
ret
;
}
static
void
__exit
fini
(
void
)
{
crypto_unregister_alg
(
&
compress_null
);
crypto_unregister_alg
(
&
digest_null
);
crypto_unregister_alg
(
&
cipher_null
);
}
module_init
(
init
);
module_exit
(
fini
);
MODULE_LICENSE
(
"GPL"
);
MODULE_DESCRIPTION
(
"Null Cryptographic Algorithms"
);
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