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author | Russell King <rmk+kernel@arm.linux.org.uk> | 2009-09-22 19:54:53 (GMT) |
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committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2009-09-22 20:01:40 (GMT) |
commit | ae19ffbadc1b2100285a5b5b3d0a4e0a11390904 (patch) | |
tree | 3c2086ab67398a019089a47ca3f362a4bc6db74f /drivers/staging/rtl8192su/ieee80211/arc4.c | |
parent | 34e84f39a27d059a3e6ec6e8b94aafa702e6f220 (diff) | |
parent | 9173a8ef24a6b1b8031507b35b8ffe5f85a87692 (diff) | |
download | linux-fsl-qoriq-ae19ffbadc1b2100285a5b5b3d0a4e0a11390904.tar.xz |
Merge branch 'master' into for-linus
Diffstat (limited to 'drivers/staging/rtl8192su/ieee80211/arc4.c')
-rw-r--r-- | drivers/staging/rtl8192su/ieee80211/arc4.c | 103 |
1 files changed, 0 insertions, 103 deletions
diff --git a/drivers/staging/rtl8192su/ieee80211/arc4.c b/drivers/staging/rtl8192su/ieee80211/arc4.c deleted file mode 100644 index e408472..0000000 --- a/drivers/staging/rtl8192su/ieee80211/arc4.c +++ /dev/null @@ -1,103 +0,0 @@ -/* - * 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((unsigned int)++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>"); |