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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
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1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980818283// SPDX-License-Identifier: GPL-2.0-or-later/* * Cryptographic API * * ARC4 Cipher Algorithm * * Jon Oberheide <jon@oberheide.org> */
#include <crypto/arc4.h>#include <crypto/internal/skcipher.h>#include <linux/init.h>#include <linux/kernel.h>#include <linux/module.h>#include <linux/sched.h>
#define ARC4_ALIGN __alignof__(struct arc4_ctx)
static int crypto_arc4_setkey(struct crypto_lskcipher *tfm, const u8 *in_key, unsigned int key_len){ struct arc4_ctx *ctx = crypto_lskcipher_ctx(tfm);
return arc4_setkey(ctx, in_key, key_len);}
static int crypto_arc4_crypt(struct crypto_lskcipher *tfm, const u8 *src, u8 *dst, unsigned nbytes, u8 *siv, u32 flags){ struct arc4_ctx *ctx = crypto_lskcipher_ctx(tfm);
if (!(flags & CRYPTO_LSKCIPHER_FLAG_CONT)) memcpy(siv, ctx, sizeof(*ctx));
ctx = (struct arc4_ctx *)siv;
arc4_crypt(ctx, dst, src, nbytes); return 0;}
static int crypto_arc4_init(struct crypto_lskcipher *tfm){ pr_warn_ratelimited("\"%s\" (%ld) uses obsolete ecb(arc4) skcipher\n", current->comm, (unsigned long)current->pid);
return 0;}
static struct lskcipher_alg arc4_alg = { .co.base.cra_name = "arc4", .co.base.cra_driver_name = "arc4-generic", .co.base.cra_priority = 100, .co.base.cra_blocksize = ARC4_BLOCK_SIZE, .co.base.cra_ctxsize = sizeof(struct arc4_ctx), .co.base.cra_alignmask = ARC4_ALIGN - 1, .co.base.cra_module = THIS_MODULE, .co.min_keysize = ARC4_MIN_KEY_SIZE, .co.max_keysize = ARC4_MAX_KEY_SIZE, .co.statesize = sizeof(struct arc4_ctx), .setkey = crypto_arc4_setkey, .encrypt = crypto_arc4_crypt, .decrypt = crypto_arc4_crypt, .init = crypto_arc4_init,};
static int __init arc4_init(void){ return crypto_register_lskcipher(&arc4_alg);}
static void __exit arc4_exit(void){ crypto_unregister_lskcipher(&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>");MODULE_ALIAS_CRYPTO("ecb(arc4)");