diff options
Diffstat (limited to 'crypto/arc4.c')
| -rw-r--r-- | crypto/arc4.c | 60 |
1 files changed, 23 insertions, 37 deletions
diff --git a/crypto/arc4.c b/crypto/arc4.c index 3254dcc34368..eb3590dc9282 100644 --- a/crypto/arc4.c +++ b/crypto/arc4.c @@ -7,7 +7,6 @@ * Jon Oberheide <jon@oberheide.org> */ -#include <crypto/algapi.h> #include <crypto/arc4.h> #include <crypto/internal/skcipher.h> #include <linux/init.h> @@ -15,33 +14,24 @@ #include <linux/module.h> #include <linux/sched.h> -static int crypto_arc4_setkey(struct crypto_skcipher *tfm, const u8 *in_key, +static int crypto_arc4_setkey(struct crypto_lskcipher *tfm, const u8 *in_key, unsigned int key_len) { - struct arc4_ctx *ctx = crypto_skcipher_ctx(tfm); + struct arc4_ctx *ctx = crypto_lskcipher_ctx(tfm); return arc4_setkey(ctx, in_key, key_len); } -static int crypto_arc4_crypt(struct skcipher_request *req) +static int crypto_arc4_crypt(struct crypto_lskcipher *tfm, const u8 *src, + u8 *dst, unsigned nbytes, u8 *iv, bool final) { - struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req); - struct arc4_ctx *ctx = crypto_skcipher_ctx(tfm); - struct skcipher_walk walk; - int err; + struct arc4_ctx *ctx = crypto_lskcipher_ctx(tfm); - err = skcipher_walk_virt(&walk, req, false); - - while (walk.nbytes > 0) { - arc4_crypt(ctx, walk.dst.virt.addr, walk.src.virt.addr, - walk.nbytes); - err = skcipher_walk_done(&walk, 0); - } - - return err; + arc4_crypt(ctx, dst, src, nbytes); + return 0; } -static int crypto_arc4_init(struct crypto_skcipher *tfm) +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); @@ -49,33 +39,29 @@ static int crypto_arc4_init(struct crypto_skcipher *tfm) return 0; } -static struct skcipher_alg arc4_alg = { - /* - * For legacy reasons, this is named "ecb(arc4)", not "arc4". - * Nevertheless it's actually a stream cipher, not a block cipher. - */ - .base.cra_name = "ecb(arc4)", - .base.cra_driver_name = "ecb(arc4)-generic", - .base.cra_priority = 100, - .base.cra_blocksize = ARC4_BLOCK_SIZE, - .base.cra_ctxsize = sizeof(struct arc4_ctx), - .base.cra_module = THIS_MODULE, - .min_keysize = ARC4_MIN_KEY_SIZE, - .max_keysize = ARC4_MAX_KEY_SIZE, - .setkey = crypto_arc4_setkey, - .encrypt = crypto_arc4_crypt, - .decrypt = crypto_arc4_crypt, - .init = crypto_arc4_init, +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_module = THIS_MODULE, + .co.min_keysize = ARC4_MIN_KEY_SIZE, + .co.max_keysize = ARC4_MAX_KEY_SIZE, + .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_skcipher(&arc4_alg); + return crypto_register_lskcipher(&arc4_alg); } static void __exit arc4_exit(void) { - crypto_unregister_skcipher(&arc4_alg); + crypto_unregister_lskcipher(&arc4_alg); } subsys_initcall(arc4_init); |