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Commit ceda4ae6 authored by Greg Kroah-Hartman's avatar Greg Kroah-Hartman
Browse files

Staging: rtl8187se: remove unneeded files



There were a number of files in the ieee80211 code that were not
needed, so they are removed.

Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent c8d86be3
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+0 −35
Original line number Diff line number Diff line

#EXTRA_CFLAGS += -I$(TOPDIR)/drivers/net/wireless
#EXTRA_CFLAGS += -O2

EXTRA_CFLAGS += -DTHOMAS_TURBO
EXTRA_CFLAGS += -DENABLE_IPS

ifeq ($(shell uname -r|cut -d. -f1,2,3,4), 2.6.16.60-0)
EXTRA_CFLAGS += -DOPENSUSE_SLED
endif

ifeq ($(shell uname -r|cut -d. -f1,2,3,4), 2.6.26.3-29)
EXTRA_CFLAGS += -DFEDORACORE_9
endif


#+YJ,080626
EXTRA_CFLAGS += -DENABLE_DOT11D

#enable it for legacy power save, disable it for leisure  power save
#CFLAGS += -DENABLE_LPS

ieee80211-rtl-objs := dot11d.o ieee80211_softmac.o ieee80211_rx.o ieee80211_tx.o ieee80211_wx.o ieee80211_module.o ieee80211_softmac_wx.o

ieee80211_crypt-rtl-objs := ieee80211_crypt.o
ieee80211_crypt_tkip-rtl-objs := ieee80211_crypt_tkip.o
ieee80211_crypt_ccmp-rtl-objs := ieee80211_crypt_ccmp.o
ieee80211_crypt_wep-rtl-objs := ieee80211_crypt_wep.o

obj-m +=ieee80211-rtl.o
obj-m +=ieee80211_crypt-rtl.o
obj-m +=ieee80211_crypt_wep-rtl.o
obj-m +=ieee80211_crypt_tkip-rtl.o
obj-m +=ieee80211_crypt_ccmp-rtl.o
+0 −469
Original line number Diff line number Diff line
/*
 * Cryptographic API.
 *
 * AES Cipher Algorithm.
 *
 * Based on Brian Gladman's code.
 *
 * Linux developers:
 *  Alexander Kjeldaas <astor@fast.no>
 *  Herbert Valerio Riedel <hvr@hvrlab.org>
 *  Kyle McMartin <kyle@debian.org>
 *  Adam J. Richter <adam@yggdrasil.com> (conversion to 2.5 API).
 *
 * 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.
 *
 * ---------------------------------------------------------------------------
 * Copyright (c) 2002, Dr Brian Gladman <brg@gladman.me.uk>, Worcester, UK.
 * All rights reserved.
 *
 * LICENSE TERMS
 *
 * The free distribution and use of this software in both source and binary
 * form is allowed (with or without changes) provided that:
 *
 *   1. distributions of this source code include the above copyright
 *      notice, this list of conditions and the following disclaimer;
 *
 *   2. distributions in binary form include the above copyright
 *      notice, this list of conditions and the following disclaimer
 *      in the documentation and/or other associated materials;
 *
 *   3. the copyright holder's name is not used to endorse products
 *      built using this software without specific written permission.
 *
 * ALTERNATIVELY, provided that this notice is retained in full, this product
 * may be distributed under the terms of the GNU General Public License (GPL),
 * in which case the provisions of the GPL apply INSTEAD OF those given above.
 *
 * DISCLAIMER
 *
 * This software is provided 'as is' with no explicit or implied warranties
 * in respect of its properties, including, but not limited to, correctness
 * and/or fitness for purpose.
 * ---------------------------------------------------------------------------
 */

/* Some changes from the Gladman version:
    s/RIJNDAEL(e_key)/E_KEY/g
    s/RIJNDAEL(d_key)/D_KEY/g
*/

#include <linux/module.h>
#include <linux/init.h>
#include <linux/types.h>
#include <linux/errno.h>
//#include <linux/crypto.h>
#include "rtl_crypto.h"
#include <asm/byteorder.h>

#define AES_MIN_KEY_SIZE	16
#define AES_MAX_KEY_SIZE	32

#define AES_BLOCK_SIZE		16

static inline
u32 generic_rotr32 (const u32 x, const unsigned bits)
{
	const unsigned n = bits % 32;
	return (x >> n) | (x << (32 - n));
}

static inline
u32 generic_rotl32 (const u32 x, const unsigned bits)
{
	const unsigned n = bits % 32;
	return (x << n) | (x >> (32 - n));
}

#define rotl generic_rotl32
#define rotr generic_rotr32

/*
 * #define byte(x, nr) ((unsigned char)((x) >> (nr*8)))
 */
inline static u8
byte(const u32 x, const unsigned n)
{
	return x >> (n << 3);
}

#define u32_in(x) le32_to_cpu(*(const u32 *)(x))
#define u32_out(to, from) (*(u32 *)(to) = cpu_to_le32(from))

struct aes_ctx {
	int key_length;
	u32 E[60];
	u32 D[60];
};

#define E_KEY ctx->E
#define D_KEY ctx->D

static u8 pow_tab[256] __initdata;
static u8 log_tab[256] __initdata;
static u8 sbx_tab[256] __initdata;
static u8 isb_tab[256] __initdata;
static u32 rco_tab[10];
static u32 ft_tab[4][256];
static u32 it_tab[4][256];

static u32 fl_tab[4][256];
static u32 il_tab[4][256];

static inline u8 __init
f_mult (u8 a, u8 b)
{
	u8 aa = log_tab[a], cc = aa + log_tab[b];

	return pow_tab[cc + (cc < aa ? 1 : 0)];
}

#define ff_mult(a,b)    (a && b ? f_mult(a, b) : 0)

#define f_rn(bo, bi, n, k)					\
    bo[n] =  ft_tab[0][byte(bi[n],0)] ^				\
             ft_tab[1][byte(bi[(n + 1) & 3],1)] ^		\
             ft_tab[2][byte(bi[(n + 2) & 3],2)] ^		\
             ft_tab[3][byte(bi[(n + 3) & 3],3)] ^ *(k + n)

#define i_rn(bo, bi, n, k)					\
    bo[n] =  it_tab[0][byte(bi[n],0)] ^				\
             it_tab[1][byte(bi[(n + 3) & 3],1)] ^		\
             it_tab[2][byte(bi[(n + 2) & 3],2)] ^		\
             it_tab[3][byte(bi[(n + 1) & 3],3)] ^ *(k + n)

#define ls_box(x)				\
    ( fl_tab[0][byte(x, 0)] ^			\
      fl_tab[1][byte(x, 1)] ^			\
      fl_tab[2][byte(x, 2)] ^			\
      fl_tab[3][byte(x, 3)] )

#define f_rl(bo, bi, n, k)					\
    bo[n] =  fl_tab[0][byte(bi[n],0)] ^				\
             fl_tab[1][byte(bi[(n + 1) & 3],1)] ^		\
             fl_tab[2][byte(bi[(n + 2) & 3],2)] ^		\
             fl_tab[3][byte(bi[(n + 3) & 3],3)] ^ *(k + n)

#define i_rl(bo, bi, n, k)					\
    bo[n] =  il_tab[0][byte(bi[n],0)] ^				\
             il_tab[1][byte(bi[(n + 3) & 3],1)] ^		\
             il_tab[2][byte(bi[(n + 2) & 3],2)] ^		\
             il_tab[3][byte(bi[(n + 1) & 3],3)] ^ *(k + n)

static void __init
gen_tabs (void)
{
	u32 i, t;
	u8 p, q;

	/* log and power tables for GF(2**8) finite field with
	   0x011b as modular polynomial - the simplest primitive
	   root is 0x03, used here to generate the tables */

	for (i = 0, p = 1; i < 256; ++i) {
		pow_tab[i] = (u8) p;
		log_tab[p] = (u8) i;

		p ^= (p << 1) ^ (p & 0x80 ? 0x01b : 0);
	}

	log_tab[1] = 0;

	for (i = 0, p = 1; i < 10; ++i) {
		rco_tab[i] = p;

		p = (p << 1) ^ (p & 0x80 ? 0x01b : 0);
	}

	for (i = 0; i < 256; ++i) {
		p = (i ? pow_tab[255 - log_tab[i]] : 0);
		q = ((p >> 7) | (p << 1)) ^ ((p >> 6) | (p << 2));
		p ^= 0x63 ^ q ^ ((q >> 6) | (q << 2));
		sbx_tab[i] = p;
		isb_tab[p] = (u8) i;
	}

	for (i = 0; i < 256; ++i) {
		p = sbx_tab[i];

		t = p;
		fl_tab[0][i] = t;
		fl_tab[1][i] = rotl (t, 8);
		fl_tab[2][i] = rotl (t, 16);
		fl_tab[3][i] = rotl (t, 24);

		t = ((u32) ff_mult (2, p)) |
		    ((u32) p << 8) |
		    ((u32) p << 16) | ((u32) ff_mult (3, p) << 24);

		ft_tab[0][i] = t;
		ft_tab[1][i] = rotl (t, 8);
		ft_tab[2][i] = rotl (t, 16);
		ft_tab[3][i] = rotl (t, 24);

		p = isb_tab[i];

		t = p;
		il_tab[0][i] = t;
		il_tab[1][i] = rotl (t, 8);
		il_tab[2][i] = rotl (t, 16);
		il_tab[3][i] = rotl (t, 24);

		t = ((u32) ff_mult (14, p)) |
		    ((u32) ff_mult (9, p) << 8) |
		    ((u32) ff_mult (13, p) << 16) |
		    ((u32) ff_mult (11, p) << 24);

		it_tab[0][i] = t;
		it_tab[1][i] = rotl (t, 8);
		it_tab[2][i] = rotl (t, 16);
		it_tab[3][i] = rotl (t, 24);
	}
}

#define star_x(x) (((x) & 0x7f7f7f7f) << 1) ^ ((((x) & 0x80808080) >> 7) * 0x1b)

#define imix_col(y,x)       \
    u   = star_x(x);        \
    v   = star_x(u);        \
    w   = star_x(v);        \
    t   = w ^ (x);          \
   (y)  = u ^ v ^ w;        \
   (y) ^= rotr(u ^ t,  8) ^ \
          rotr(v ^ t, 16) ^ \
          rotr(t,24)

/* initialise the key schedule from the user supplied key */

#define loop4(i)                                    \
{   t = rotr(t,  8); t = ls_box(t) ^ rco_tab[i];    \
    t ^= E_KEY[4 * i];     E_KEY[4 * i + 4] = t;    \
    t ^= E_KEY[4 * i + 1]; E_KEY[4 * i + 5] = t;    \
    t ^= E_KEY[4 * i + 2]; E_KEY[4 * i + 6] = t;    \
    t ^= E_KEY[4 * i + 3]; E_KEY[4 * i + 7] = t;    \
}

#define loop6(i)                                    \
{   t = rotr(t,  8); t = ls_box(t) ^ rco_tab[i];    \
    t ^= E_KEY[6 * i];     E_KEY[6 * i + 6] = t;    \
    t ^= E_KEY[6 * i + 1]; E_KEY[6 * i + 7] = t;    \
    t ^= E_KEY[6 * i + 2]; E_KEY[6 * i + 8] = t;    \
    t ^= E_KEY[6 * i + 3]; E_KEY[6 * i + 9] = t;    \
    t ^= E_KEY[6 * i + 4]; E_KEY[6 * i + 10] = t;   \
    t ^= E_KEY[6 * i + 5]; E_KEY[6 * i + 11] = t;   \
}

#define loop8(i)                                    \
{   t = rotr(t,  8); ; t = ls_box(t) ^ rco_tab[i];  \
    t ^= E_KEY[8 * i];     E_KEY[8 * i + 8] = t;    \
    t ^= E_KEY[8 * i + 1]; E_KEY[8 * i + 9] = t;    \
    t ^= E_KEY[8 * i + 2]; E_KEY[8 * i + 10] = t;   \
    t ^= E_KEY[8 * i + 3]; E_KEY[8 * i + 11] = t;   \
    t  = E_KEY[8 * i + 4] ^ ls_box(t);    \
    E_KEY[8 * i + 12] = t;                \
    t ^= E_KEY[8 * i + 5]; E_KEY[8 * i + 13] = t;   \
    t ^= E_KEY[8 * i + 6]; E_KEY[8 * i + 14] = t;   \
    t ^= E_KEY[8 * i + 7]; E_KEY[8 * i + 15] = t;   \
}

static int
aes_set_key(void *ctx_arg, const u8 *in_key, unsigned int key_len, u32 *flags)
{
	struct aes_ctx *ctx = ctx_arg;
	u32 i, t, u, v, w;

	if (key_len != 16 && key_len != 24 && key_len != 32) {
		*flags |= CRYPTO_TFM_RES_BAD_KEY_LEN;
		return -EINVAL;
	}

	ctx->key_length = key_len;

	E_KEY[0] = u32_in (in_key);
	E_KEY[1] = u32_in (in_key + 4);
	E_KEY[2] = u32_in (in_key + 8);
	E_KEY[3] = u32_in (in_key + 12);

	switch (key_len) {
	case 16:
		t = E_KEY[3];
		for (i = 0; i < 10; ++i)
			loop4 (i);
		break;

	case 24:
		E_KEY[4] = u32_in (in_key + 16);
		t = E_KEY[5] = u32_in (in_key + 20);
		for (i = 0; i < 8; ++i)
			loop6 (i);
		break;

	case 32:
		E_KEY[4] = u32_in (in_key + 16);
		E_KEY[5] = u32_in (in_key + 20);
		E_KEY[6] = u32_in (in_key + 24);
		t = E_KEY[7] = u32_in (in_key + 28);
		for (i = 0; i < 7; ++i)
			loop8 (i);
		break;
	}

	D_KEY[0] = E_KEY[0];
	D_KEY[1] = E_KEY[1];
	D_KEY[2] = E_KEY[2];
	D_KEY[3] = E_KEY[3];

	for (i = 4; i < key_len + 24; ++i) {
		imix_col (D_KEY[i], E_KEY[i]);
	}

	return 0;
}

/* encrypt a block of text */

#define f_nround(bo, bi, k) \
    f_rn(bo, bi, 0, k);     \
    f_rn(bo, bi, 1, k);     \
    f_rn(bo, bi, 2, k);     \
    f_rn(bo, bi, 3, k);     \
    k += 4

#define f_lround(bo, bi, k) \
    f_rl(bo, bi, 0, k);     \
    f_rl(bo, bi, 1, k);     \
    f_rl(bo, bi, 2, k);     \
    f_rl(bo, bi, 3, k)

static void aes_encrypt(void *ctx_arg, u8 *out, const u8 *in)
{
	const struct aes_ctx *ctx = ctx_arg;
	u32 b0[4], b1[4];
	const u32 *kp = E_KEY + 4;

	b0[0] = u32_in (in) ^ E_KEY[0];
	b0[1] = u32_in (in + 4) ^ E_KEY[1];
	b0[2] = u32_in (in + 8) ^ E_KEY[2];
	b0[3] = u32_in (in + 12) ^ E_KEY[3];

	if (ctx->key_length > 24) {
		f_nround (b1, b0, kp);
		f_nround (b0, b1, kp);
	}

	if (ctx->key_length > 16) {
		f_nround (b1, b0, kp);
		f_nround (b0, b1, kp);
	}

	f_nround (b1, b0, kp);
	f_nround (b0, b1, kp);
	f_nround (b1, b0, kp);
	f_nround (b0, b1, kp);
	f_nround (b1, b0, kp);
	f_nround (b0, b1, kp);
	f_nround (b1, b0, kp);
	f_nround (b0, b1, kp);
	f_nround (b1, b0, kp);
	f_lround (b0, b1, kp);

	u32_out (out, b0[0]);
	u32_out (out + 4, b0[1]);
	u32_out (out + 8, b0[2]);
	u32_out (out + 12, b0[3]);
}

/* decrypt a block of text */

#define i_nround(bo, bi, k) \
    i_rn(bo, bi, 0, k);     \
    i_rn(bo, bi, 1, k);     \
    i_rn(bo, bi, 2, k);     \
    i_rn(bo, bi, 3, k);     \
    k -= 4

#define i_lround(bo, bi, k) \
    i_rl(bo, bi, 0, k);     \
    i_rl(bo, bi, 1, k);     \
    i_rl(bo, bi, 2, k);     \
    i_rl(bo, bi, 3, k)

static void aes_decrypt(void *ctx_arg, u8 *out, const u8 *in)
{
	const struct aes_ctx *ctx = ctx_arg;
	u32 b0[4], b1[4];
	const int key_len = ctx->key_length;
	const u32 *kp = D_KEY + key_len + 20;

	b0[0] = u32_in (in) ^ E_KEY[key_len + 24];
	b0[1] = u32_in (in + 4) ^ E_KEY[key_len + 25];
	b0[2] = u32_in (in + 8) ^ E_KEY[key_len + 26];
	b0[3] = u32_in (in + 12) ^ E_KEY[key_len + 27];

	if (key_len > 24) {
		i_nround (b1, b0, kp);
		i_nround (b0, b1, kp);
	}

	if (key_len > 16) {
		i_nround (b1, b0, kp);
		i_nround (b0, b1, kp);
	}

	i_nround (b1, b0, kp);
	i_nround (b0, b1, kp);
	i_nround (b1, b0, kp);
	i_nround (b0, b1, kp);
	i_nround (b1, b0, kp);
	i_nround (b0, b1, kp);
	i_nround (b1, b0, kp);
	i_nround (b0, b1, kp);
	i_nround (b1, b0, kp);
	i_lround (b0, b1, kp);

	u32_out (out, b0[0]);
	u32_out (out + 4, b0[1]);
	u32_out (out + 8, b0[2]);
	u32_out (out + 12, b0[3]);
}


static struct crypto_alg aes_alg = {
	.cra_name		=	"aes",
	.cra_flags		=	CRYPTO_ALG_TYPE_CIPHER,
	.cra_blocksize		=	AES_BLOCK_SIZE,
	.cra_ctxsize		=	sizeof(struct aes_ctx),
	.cra_module		=	THIS_MODULE,
	.cra_list		=	LIST_HEAD_INIT(aes_alg.cra_list),
	.cra_u			=	{
		.cipher = {
			.cia_min_keysize	=	AES_MIN_KEY_SIZE,
			.cia_max_keysize	=	AES_MAX_KEY_SIZE,
			.cia_setkey	   	= 	aes_set_key,
			.cia_encrypt	 	=	aes_encrypt,
			.cia_decrypt	  	=	aes_decrypt
		}
	}
};

static int __init aes_init(void)
{
	gen_tabs();
	return crypto_register_alg(&aes_alg);
}

static void __exit aes_fini(void)
{
	crypto_unregister_alg(&aes_alg);
}

module_init(aes_init);
module_exit(aes_fini);

MODULE_DESCRIPTION("Rijndael (AES) Cipher Algorithm");
MODULE_LICENSE("Dual BSD/GPL");
+0 −246
Original line number Diff line number Diff line
/*
 * Scatterlist Cryptographic API.
 *
 * Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
 * Copyright (c) 2002 David S. Miller (davem@redhat.com)
 *
 * Portions derived from Cryptoapi, by Alexander Kjeldaas <astor@fast.no>
 * and Nettle, by Niels M鰈ler.
 *
 * 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 "kmap_types.h"

#include <linux/init.h>
#include <linux/module.h>
//#include <linux/crypto.h>
#include "rtl_crypto.h"
#include <linux/errno.h>
#include <linux/rwsem.h>
#include <linux/slab.h>
#include "internal.h"

LIST_HEAD(crypto_alg_list);
DECLARE_RWSEM(crypto_alg_sem);

static inline int crypto_alg_get(struct crypto_alg *alg)
{
	return try_inc_mod_count(alg->cra_module);
}

static inline void crypto_alg_put(struct crypto_alg *alg)
{
	if (alg->cra_module)
		__MOD_DEC_USE_COUNT(alg->cra_module);
}

struct crypto_alg *crypto_alg_lookup(const char *name)
{
	struct crypto_alg *q, *alg = NULL;

	if (!name)
		return NULL;

	down_read(&crypto_alg_sem);

	list_for_each_entry(q, &crypto_alg_list, cra_list) {
		if (!(strcmp(q->cra_name, name))) {
			if (crypto_alg_get(q))
				alg = q;
			break;
		}
	}

	up_read(&crypto_alg_sem);
	return alg;
}

static int crypto_init_flags(struct crypto_tfm *tfm, u32 flags)
{
	tfm->crt_flags = 0;

	switch (crypto_tfm_alg_type(tfm)) {
	case CRYPTO_ALG_TYPE_CIPHER:
		return crypto_init_cipher_flags(tfm, flags);

	case CRYPTO_ALG_TYPE_DIGEST:
		return crypto_init_digest_flags(tfm, flags);

	case CRYPTO_ALG_TYPE_COMPRESS:
		return crypto_init_compress_flags(tfm, flags);

	default:
		break;
	}

	BUG();
	return -EINVAL;
}

static int crypto_init_ops(struct crypto_tfm *tfm)
{
	switch (crypto_tfm_alg_type(tfm)) {
	case CRYPTO_ALG_TYPE_CIPHER:
		return crypto_init_cipher_ops(tfm);

	case CRYPTO_ALG_TYPE_DIGEST:
		return crypto_init_digest_ops(tfm);

	case CRYPTO_ALG_TYPE_COMPRESS:
		return crypto_init_compress_ops(tfm);

	default:
		break;
	}

	BUG();
	return -EINVAL;
}

static void crypto_exit_ops(struct crypto_tfm *tfm)
{
	switch (crypto_tfm_alg_type(tfm)) {
	case CRYPTO_ALG_TYPE_CIPHER:
		crypto_exit_cipher_ops(tfm);
		break;

	case CRYPTO_ALG_TYPE_DIGEST:
		crypto_exit_digest_ops(tfm);
		break;

	case CRYPTO_ALG_TYPE_COMPRESS:
		crypto_exit_compress_ops(tfm);
		break;

	default:
		BUG();

	}
}

struct crypto_tfm *crypto_alloc_tfm(const char *name, u32 flags)
{
	struct crypto_tfm *tfm = NULL;
	struct crypto_alg *alg;

	alg = crypto_alg_mod_lookup(name);
	if (alg == NULL)
		goto out;

	tfm = kmalloc(sizeof(*tfm) + alg->cra_ctxsize, GFP_KERNEL);
	if (tfm == NULL)
		goto out_put;

	memset(tfm, 0, sizeof(*tfm) + alg->cra_ctxsize);

	tfm->__crt_alg = alg;

	if (crypto_init_flags(tfm, flags))
		goto out_free_tfm;

	if (crypto_init_ops(tfm)) {
		crypto_exit_ops(tfm);
		goto out_free_tfm;
	}

	goto out;

out_free_tfm:
	kfree(tfm);
	tfm = NULL;
out_put:
	crypto_alg_put(alg);
out:
	return tfm;
}

void crypto_free_tfm(struct crypto_tfm *tfm)
{
	struct crypto_alg *alg = tfm->__crt_alg;
	int size = sizeof(*tfm) + alg->cra_ctxsize;

	crypto_exit_ops(tfm);
	crypto_alg_put(alg);
	memset(tfm, 0, size);
	kfree(tfm);
}

int crypto_register_alg(struct crypto_alg *alg)
{
	int ret = 0;
	struct crypto_alg *q;

	down_write(&crypto_alg_sem);

	list_for_each_entry(q, &crypto_alg_list, cra_list) {
		if (!(strcmp(q->cra_name, alg->cra_name))) {
			ret = -EEXIST;
			goto out;
		}
	}

	list_add_tail(&alg->cra_list, &crypto_alg_list);
out:
	up_write(&crypto_alg_sem);
	return ret;
}

int crypto_unregister_alg(struct crypto_alg *alg)
{
	int ret = -ENOENT;
	struct crypto_alg *q;

	BUG_ON(!alg->cra_module);

	down_write(&crypto_alg_sem);
	list_for_each_entry(q, &crypto_alg_list, cra_list) {
		if (alg == q) {
			list_del(&alg->cra_list);
			ret = 0;
			goto out;
		}
	}
out:
	up_write(&crypto_alg_sem);
	return ret;
}

int crypto_alg_available(const char *name, u32 flags)
{
	int ret = 0;
	struct crypto_alg *alg = crypto_alg_mod_lookup(name);

	if (alg) {
		crypto_alg_put(alg);
		ret = 1;
	}

	return ret;
}

static int __init init_crypto(void)
{
	printk(KERN_INFO "Initializing Cryptographic API\n");
	crypto_init_proc();
	return 0;
}

__initcall(init_crypto);

/*
EXPORT_SYMBOL_GPL(crypto_register_alg);
EXPORT_SYMBOL_GPL(crypto_unregister_alg);
EXPORT_SYMBOL_GPL(crypto_alloc_tfm);
EXPORT_SYMBOL_GPL(crypto_free_tfm);
EXPORT_SYMBOL_GPL(crypto_alg_available);
*/

EXPORT_SYMBOL_NOVERS(crypto_register_alg);
EXPORT_SYMBOL_NOVERS(crypto_unregister_alg);
EXPORT_SYMBOL_NOVERS(crypto_alloc_tfm);
EXPORT_SYMBOL_NOVERS(crypto_free_tfm);
EXPORT_SYMBOL_NOVERS(crypto_alg_available);
+0 −103
Original line number Diff line number Diff line
/*
 * Cryptographic API
 *
 * ARC4 Cipher Algorithm
 *
 * Jon Oberheide <jon@oberheide.org>
 *
 * 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/module.h>
#include <linux/init.h>
#include "rtl_crypto.h"

#define ARC4_MIN_KEY_SIZE	1
#define ARC4_MAX_KEY_SIZE	256
#define ARC4_BLOCK_SIZE		1

struct arc4_ctx {
	u8 S[256];
	u8 x, y;
};

static int arc4_set_key(void *ctx_arg, const u8 *in_key, unsigned int key_len, u32 *flags)
{
	struct arc4_ctx *ctx = ctx_arg;
	int i, j = 0, k = 0;

	ctx->x = 1;
	ctx->y = 0;

	for(i = 0; i < 256; i++)
		ctx->S[i] = i;

	for(i = 0; i < 256; i++)
	{
		u8 a = ctx->S[i];
		j = (j + in_key[k] + a) & 0xff;
		ctx->S[i] = ctx->S[j];
		ctx->S[j] = a;
		if(++k >= key_len)
			k = 0;
	}

	return 0;
}

static void arc4_crypt(void *ctx_arg, u8 *out, const u8 *in)
{
	struct arc4_ctx *ctx = ctx_arg;

	u8 *const S = ctx->S;
	u8 x = ctx->x;
	u8 y = ctx->y;
	u8 a, b;

	a = S[x];
	y = (y + a) & 0xff;
	b = S[y];
	S[x] = b;
	S[y] = a;
	x = (x + 1) & 0xff;
	*out++ = *in ^ S[(a + b) & 0xff];

	ctx->x = x;
	ctx->y = y;
}

static struct crypto_alg arc4_alg = {
	.cra_name		=	"arc4",
	.cra_flags		=	CRYPTO_ALG_TYPE_CIPHER,
	.cra_blocksize		=	ARC4_BLOCK_SIZE,
	.cra_ctxsize		=	sizeof(struct arc4_ctx),
	.cra_module		=	THIS_MODULE,
	.cra_list		=	LIST_HEAD_INIT(arc4_alg.cra_list),
	.cra_u			=	{ .cipher = {
	.cia_min_keysize	=	ARC4_MIN_KEY_SIZE,
	.cia_max_keysize	=	ARC4_MAX_KEY_SIZE,
	.cia_setkey	   	= 	arc4_set_key,
	.cia_encrypt	 	=	arc4_crypt,
	.cia_decrypt	  	=	arc4_crypt } }
};

static int __init arc4_init(void)
{
	return crypto_register_alg(&arc4_alg);
}


static void __exit arc4_exit(void)
{
	crypto_unregister_alg(&arc4_alg);
}

module_init(arc4_init);
module_exit(arc4_exit);

MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("ARC4 Cipher Algorithm");
MODULE_AUTHOR("Jon Oberheide <jon@oberheide.org>");
+0 −40
Original line number Diff line number Diff line
/*
 * Cryptographic API.
 *
 * Algorithm autoloader.
 *
 * 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 "kmap_types.h"

#include <linux/kernel.h>
//#include <linux/crypto.h>
#include "rtl_crypto.h"
#include <linux/string.h>
#include <linux/kmod.h>
#include "internal.h"

/*
 * A far more intelligent version of this is planned.  For now, just
 * try an exact match on the name of the algorithm.
 */
void crypto_alg_autoload(const char *name)
{
	request_module(name);
}

struct crypto_alg *crypto_alg_mod_lookup(const char *name)
{
	struct crypto_alg *alg = crypto_alg_lookup(name);
	if (alg == NULL) {
		crypto_alg_autoload(name);
		alg = crypto_alg_lookup(name);
	}
	return alg;
}
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