Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  * Cryptographic API.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  * Null algorithms, aka Much Ado About Nothing.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7)  * These are needed for IPsec, and may be useful in general for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8)  * testing & debugging.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10)  * The null cipher is compliant with RFC2410.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12)  * Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #include <crypto/null.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) #include <crypto/internal/hash.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) #include <crypto/internal/skcipher.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) #include <linux/mm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) #include <linux/string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) static DEFINE_MUTEX(crypto_default_null_skcipher_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) static struct crypto_sync_skcipher *crypto_default_null_skcipher;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) static int crypto_default_null_skcipher_refcnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) static int null_compress(struct crypto_tfm *tfm, const u8 *src,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) 			 unsigned int slen, u8 *dst, unsigned int *dlen)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) 	if (slen > *dlen)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) 	memcpy(dst, src, slen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) 	*dlen = slen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) static int null_init(struct shash_desc *desc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) static int null_update(struct shash_desc *desc, const u8 *data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 		       unsigned int len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) static int null_final(struct shash_desc *desc, u8 *out)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) static int null_digest(struct shash_desc *desc, const u8 *data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 		       unsigned int len, u8 *out)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) static int null_hash_setkey(struct crypto_shash *tfm, const u8 *key,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 			    unsigned int keylen)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) { return 0; }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) static int null_skcipher_setkey(struct crypto_skcipher *tfm, const u8 *key,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 				unsigned int keylen)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) { return 0; }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) static int null_setkey(struct crypto_tfm *tfm, const u8 *key,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 		       unsigned int keylen)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) { return 0; }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) static void null_crypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 	memcpy(dst, src, NULL_BLOCK_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) static int null_skcipher_crypt(struct skcipher_request *req)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 	struct skcipher_walk walk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 	err = skcipher_walk_virt(&walk, req, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 	while (walk.nbytes) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 		if (walk.src.virt.addr != walk.dst.virt.addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 			memcpy(walk.dst.virt.addr, walk.src.virt.addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 			       walk.nbytes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 		err = skcipher_walk_done(&walk, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 	return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) static struct shash_alg digest_null = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 	.digestsize		=	NULL_DIGEST_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 	.setkey   		=	null_hash_setkey,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 	.init   		=	null_init,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 	.update 		=	null_update,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 	.finup 			=	null_digest,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 	.digest 		=	null_digest,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 	.final  		=	null_final,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 	.base			=	{
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 		.cra_name		=	"digest_null",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 		.cra_driver_name	=	"digest_null-generic",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 		.cra_blocksize		=	NULL_BLOCK_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 		.cra_module		=	THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) static struct skcipher_alg skcipher_null = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 	.base.cra_name		=	"ecb(cipher_null)",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 	.base.cra_driver_name	=	"ecb-cipher_null",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 	.base.cra_priority	=	100,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 	.base.cra_blocksize	=	NULL_BLOCK_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 	.base.cra_ctxsize	=	0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 	.base.cra_module	=	THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 	.min_keysize		=	NULL_KEY_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 	.max_keysize		=	NULL_KEY_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 	.ivsize			=	NULL_IV_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 	.setkey			=	null_skcipher_setkey,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 	.encrypt		=	null_skcipher_crypt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 	.decrypt		=	null_skcipher_crypt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) static struct crypto_alg null_algs[] = { {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 	.cra_name		=	"cipher_null",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 	.cra_driver_name	=	"cipher_null-generic",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 	.cra_flags		=	CRYPTO_ALG_TYPE_CIPHER,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 	.cra_blocksize		=	NULL_BLOCK_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 	.cra_ctxsize		=	0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 	.cra_module		=	THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 	.cra_u			=	{ .cipher = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 	.cia_min_keysize	=	NULL_KEY_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 	.cia_max_keysize	=	NULL_KEY_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 	.cia_setkey		= 	null_setkey,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 	.cia_encrypt		=	null_crypt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 	.cia_decrypt		=	null_crypt } }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) }, {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 	.cra_name		=	"compress_null",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 	.cra_driver_name	=	"compress_null-generic",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 	.cra_flags		=	CRYPTO_ALG_TYPE_COMPRESS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 	.cra_blocksize		=	NULL_BLOCK_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 	.cra_ctxsize		=	0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 	.cra_module		=	THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 	.cra_u			=	{ .compress = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 	.coa_compress		=	null_compress,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 	.coa_decompress		=	null_compress } }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) } };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) MODULE_ALIAS_CRYPTO("compress_null");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) MODULE_ALIAS_CRYPTO("digest_null");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) MODULE_ALIAS_CRYPTO("cipher_null");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) struct crypto_sync_skcipher *crypto_get_default_null_skcipher(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 	struct crypto_sync_skcipher *tfm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 	mutex_lock(&crypto_default_null_skcipher_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 	tfm = crypto_default_null_skcipher;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 	if (!tfm) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 		tfm = crypto_alloc_sync_skcipher("ecb(cipher_null)", 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 		if (IS_ERR(tfm))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 			goto unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 		crypto_default_null_skcipher = tfm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 	crypto_default_null_skcipher_refcnt++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) unlock:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 	mutex_unlock(&crypto_default_null_skcipher_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 	return tfm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) EXPORT_SYMBOL_GPL(crypto_get_default_null_skcipher);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) void crypto_put_default_null_skcipher(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 	mutex_lock(&crypto_default_null_skcipher_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 	if (!--crypto_default_null_skcipher_refcnt) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 		crypto_free_sync_skcipher(crypto_default_null_skcipher);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 		crypto_default_null_skcipher = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 	mutex_unlock(&crypto_default_null_skcipher_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) EXPORT_SYMBOL_GPL(crypto_put_default_null_skcipher);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) static int __init crypto_null_mod_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 	int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 	ret = crypto_register_algs(null_algs, ARRAY_SIZE(null_algs));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 	if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 		goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 	ret = crypto_register_shash(&digest_null);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 	if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 		goto out_unregister_algs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 	ret = crypto_register_skcipher(&skcipher_null);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 	if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 		goto out_unregister_shash;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) out_unregister_shash:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 	crypto_unregister_shash(&digest_null);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) out_unregister_algs:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 	crypto_unregister_algs(null_algs, ARRAY_SIZE(null_algs));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) static void __exit crypto_null_mod_fini(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 	crypto_unregister_algs(null_algs, ARRAY_SIZE(null_algs));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 	crypto_unregister_shash(&digest_null);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 	crypto_unregister_skcipher(&skcipher_null);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) subsys_initcall(crypto_null_mod_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) module_exit(crypto_null_mod_fini);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) MODULE_DESCRIPTION("Null Cryptographic Algorithms");