Herbert Xu | 3c09f17 | 2007-08-30 16:24:15 +0800 | [diff] [blame] | 1 | /* |
| 2 | * Authenc: Simple AEAD wrapper for IPsec |
| 3 | * |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 4 | * Copyright (c) 2007-2015 Herbert Xu <herbert@gondor.apana.org.au> |
Herbert Xu | 3c09f17 | 2007-08-30 16:24:15 +0800 | [diff] [blame] | 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify it |
| 7 | * under the terms of the GNU General Public License as published by the Free |
| 8 | * Software Foundation; either version 2 of the License, or (at your option) |
| 9 | * any later version. |
| 10 | * |
| 11 | */ |
| 12 | |
Herbert Xu | 68acbf8 | 2015-05-11 17:47:41 +0800 | [diff] [blame] | 13 | #include <crypto/internal/aead.h> |
Herbert Xu | 5f7082e | 2008-08-31 22:21:09 +1000 | [diff] [blame] | 14 | #include <crypto/internal/hash.h> |
Herbert Xu | 9ffde35a | 2007-12-17 20:12:49 +0800 | [diff] [blame] | 15 | #include <crypto/internal/skcipher.h> |
Herbert Xu | e236d4a | 2007-11-22 23:11:53 +0800 | [diff] [blame] | 16 | #include <crypto/authenc.h> |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 17 | #include <crypto/null.h> |
Herbert Xu | 42c271c | 2007-12-07 18:52:49 +0800 | [diff] [blame] | 18 | #include <crypto/scatterwalk.h> |
Herbert Xu | 3c09f17 | 2007-08-30 16:24:15 +0800 | [diff] [blame] | 19 | #include <linux/err.h> |
| 20 | #include <linux/init.h> |
| 21 | #include <linux/kernel.h> |
| 22 | #include <linux/module.h> |
Herbert Xu | e236d4a | 2007-11-22 23:11:53 +0800 | [diff] [blame] | 23 | #include <linux/rtnetlink.h> |
Herbert Xu | 3c09f17 | 2007-08-30 16:24:15 +0800 | [diff] [blame] | 24 | #include <linux/slab.h> |
| 25 | #include <linux/spinlock.h> |
| 26 | |
Herbert Xu | 3c09f17 | 2007-08-30 16:24:15 +0800 | [diff] [blame] | 27 | struct authenc_instance_ctx { |
Steffen Klassert | cbdcf80 | 2009-08-05 19:35:34 +1000 | [diff] [blame] | 28 | struct crypto_ahash_spawn auth; |
Herbert Xu | 9ffde35a | 2007-12-17 20:12:49 +0800 | [diff] [blame] | 29 | struct crypto_skcipher_spawn enc; |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 30 | unsigned int reqoff; |
Herbert Xu | 3c09f17 | 2007-08-30 16:24:15 +0800 | [diff] [blame] | 31 | }; |
| 32 | |
| 33 | struct crypto_authenc_ctx { |
Steffen Klassert | cbdcf80 | 2009-08-05 19:35:34 +1000 | [diff] [blame] | 34 | struct crypto_ahash *auth; |
Herbert Xu | 7217d49 | 2016-07-12 13:17:34 +0800 | [diff] [blame] | 35 | struct crypto_skcipher *enc; |
| 36 | struct crypto_skcipher *null; |
Herbert Xu | 3c09f17 | 2007-08-30 16:24:15 +0800 | [diff] [blame] | 37 | }; |
| 38 | |
Steffen Klassert | cbdcf80 | 2009-08-05 19:35:34 +1000 | [diff] [blame] | 39 | struct authenc_request_ctx { |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 40 | struct scatterlist src[2]; |
| 41 | struct scatterlist dst[2]; |
Steffen Klassert | cbdcf80 | 2009-08-05 19:35:34 +1000 | [diff] [blame] | 42 | char tail[]; |
| 43 | }; |
| 44 | |
Herbert Xu | 180ce7e | 2010-04-26 09:14:05 +0800 | [diff] [blame] | 45 | static void authenc_request_complete(struct aead_request *req, int err) |
| 46 | { |
| 47 | if (err != -EINPROGRESS) |
| 48 | aead_request_complete(req, err); |
| 49 | } |
| 50 | |
Mathias Krause | bc6e2bd | 2013-10-15 13:49:30 +0200 | [diff] [blame] | 51 | int crypto_authenc_extractkeys(struct crypto_authenc_keys *keys, const u8 *key, |
| 52 | unsigned int keylen) |
Herbert Xu | 3c09f17 | 2007-08-30 16:24:15 +0800 | [diff] [blame] | 53 | { |
Mathias Krause | bc6e2bd | 2013-10-15 13:49:30 +0200 | [diff] [blame] | 54 | struct rtattr *rta = (struct rtattr *)key; |
Herbert Xu | e236d4a | 2007-11-22 23:11:53 +0800 | [diff] [blame] | 55 | struct crypto_authenc_key_param *param; |
Herbert Xu | 3c09f17 | 2007-08-30 16:24:15 +0800 | [diff] [blame] | 56 | |
Herbert Xu | 12dc5e6 | 2007-12-10 10:55:21 +0800 | [diff] [blame] | 57 | if (!RTA_OK(rta, keylen)) |
Mathias Krause | bc6e2bd | 2013-10-15 13:49:30 +0200 | [diff] [blame] | 58 | return -EINVAL; |
Herbert Xu | e236d4a | 2007-11-22 23:11:53 +0800 | [diff] [blame] | 59 | if (rta->rta_type != CRYPTO_AUTHENC_KEYA_PARAM) |
Mathias Krause | bc6e2bd | 2013-10-15 13:49:30 +0200 | [diff] [blame] | 60 | return -EINVAL; |
Herbert Xu | e236d4a | 2007-11-22 23:11:53 +0800 | [diff] [blame] | 61 | if (RTA_PAYLOAD(rta) < sizeof(*param)) |
Mathias Krause | bc6e2bd | 2013-10-15 13:49:30 +0200 | [diff] [blame] | 62 | return -EINVAL; |
Herbert Xu | e236d4a | 2007-11-22 23:11:53 +0800 | [diff] [blame] | 63 | |
| 64 | param = RTA_DATA(rta); |
Mathias Krause | bc6e2bd | 2013-10-15 13:49:30 +0200 | [diff] [blame] | 65 | keys->enckeylen = be32_to_cpu(param->enckeylen); |
Herbert Xu | e236d4a | 2007-11-22 23:11:53 +0800 | [diff] [blame] | 66 | |
| 67 | key += RTA_ALIGN(rta->rta_len); |
| 68 | keylen -= RTA_ALIGN(rta->rta_len); |
| 69 | |
Mathias Krause | bc6e2bd | 2013-10-15 13:49:30 +0200 | [diff] [blame] | 70 | if (keylen < keys->enckeylen) |
| 71 | return -EINVAL; |
Herbert Xu | e236d4a | 2007-11-22 23:11:53 +0800 | [diff] [blame] | 72 | |
Mathias Krause | bc6e2bd | 2013-10-15 13:49:30 +0200 | [diff] [blame] | 73 | keys->authkeylen = keylen - keys->enckeylen; |
| 74 | keys->authkey = key; |
| 75 | keys->enckey = key + keys->authkeylen; |
| 76 | |
| 77 | return 0; |
| 78 | } |
| 79 | EXPORT_SYMBOL_GPL(crypto_authenc_extractkeys); |
| 80 | |
| 81 | static int crypto_authenc_setkey(struct crypto_aead *authenc, const u8 *key, |
| 82 | unsigned int keylen) |
| 83 | { |
| 84 | struct crypto_authenc_ctx *ctx = crypto_aead_ctx(authenc); |
| 85 | struct crypto_ahash *auth = ctx->auth; |
Herbert Xu | 7217d49 | 2016-07-12 13:17:34 +0800 | [diff] [blame] | 86 | struct crypto_skcipher *enc = ctx->enc; |
Mathias Krause | bc6e2bd | 2013-10-15 13:49:30 +0200 | [diff] [blame] | 87 | struct crypto_authenc_keys keys; |
| 88 | int err = -EINVAL; |
| 89 | |
| 90 | if (crypto_authenc_extractkeys(&keys, key, keylen) != 0) |
| 91 | goto badkey; |
Herbert Xu | 3c09f17 | 2007-08-30 16:24:15 +0800 | [diff] [blame] | 92 | |
Steffen Klassert | cbdcf80 | 2009-08-05 19:35:34 +1000 | [diff] [blame] | 93 | crypto_ahash_clear_flags(auth, CRYPTO_TFM_REQ_MASK); |
| 94 | crypto_ahash_set_flags(auth, crypto_aead_get_flags(authenc) & |
Herbert Xu | 3c09f17 | 2007-08-30 16:24:15 +0800 | [diff] [blame] | 95 | CRYPTO_TFM_REQ_MASK); |
Mathias Krause | bc6e2bd | 2013-10-15 13:49:30 +0200 | [diff] [blame] | 96 | err = crypto_ahash_setkey(auth, keys.authkey, keys.authkeylen); |
Steffen Klassert | cbdcf80 | 2009-08-05 19:35:34 +1000 | [diff] [blame] | 97 | crypto_aead_set_flags(authenc, crypto_ahash_get_flags(auth) & |
Herbert Xu | 3c09f17 | 2007-08-30 16:24:15 +0800 | [diff] [blame] | 98 | CRYPTO_TFM_RES_MASK); |
| 99 | |
| 100 | if (err) |
| 101 | goto out; |
| 102 | |
Herbert Xu | 7217d49 | 2016-07-12 13:17:34 +0800 | [diff] [blame] | 103 | crypto_skcipher_clear_flags(enc, CRYPTO_TFM_REQ_MASK); |
| 104 | crypto_skcipher_set_flags(enc, crypto_aead_get_flags(authenc) & |
| 105 | CRYPTO_TFM_REQ_MASK); |
| 106 | err = crypto_skcipher_setkey(enc, keys.enckey, keys.enckeylen); |
| 107 | crypto_aead_set_flags(authenc, crypto_skcipher_get_flags(enc) & |
Herbert Xu | 3c09f17 | 2007-08-30 16:24:15 +0800 | [diff] [blame] | 108 | CRYPTO_TFM_RES_MASK); |
| 109 | |
| 110 | out: |
| 111 | return err; |
Herbert Xu | e236d4a | 2007-11-22 23:11:53 +0800 | [diff] [blame] | 112 | |
| 113 | badkey: |
| 114 | crypto_aead_set_flags(authenc, CRYPTO_TFM_RES_BAD_KEY_LEN); |
| 115 | goto out; |
Herbert Xu | 3c09f17 | 2007-08-30 16:24:15 +0800 | [diff] [blame] | 116 | } |
| 117 | |
Steffen Klassert | cbdcf80 | 2009-08-05 19:35:34 +1000 | [diff] [blame] | 118 | static void authenc_geniv_ahash_done(struct crypto_async_request *areq, int err) |
| 119 | { |
| 120 | struct aead_request *req = areq->data; |
| 121 | struct crypto_aead *authenc = crypto_aead_reqtfm(req); |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 122 | struct aead_instance *inst = aead_alg_instance(authenc); |
| 123 | struct authenc_instance_ctx *ictx = aead_instance_ctx(inst); |
Steffen Klassert | cbdcf80 | 2009-08-05 19:35:34 +1000 | [diff] [blame] | 124 | struct authenc_request_ctx *areq_ctx = aead_request_ctx(req); |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 125 | struct ahash_request *ahreq = (void *)(areq_ctx->tail + ictx->reqoff); |
Steffen Klassert | cbdcf80 | 2009-08-05 19:35:34 +1000 | [diff] [blame] | 126 | |
| 127 | if (err) |
| 128 | goto out; |
| 129 | |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 130 | scatterwalk_map_and_copy(ahreq->result, req->dst, |
| 131 | req->assoclen + req->cryptlen, |
Steffen Klassert | cbdcf80 | 2009-08-05 19:35:34 +1000 | [diff] [blame] | 132 | crypto_aead_authsize(authenc), 1); |
| 133 | |
| 134 | out: |
| 135 | aead_request_complete(req, err); |
| 136 | } |
| 137 | |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 138 | static int crypto_authenc_genicv(struct aead_request *req, unsigned int flags) |
Herbert Xu | 3c09f17 | 2007-08-30 16:24:15 +0800 | [diff] [blame] | 139 | { |
| 140 | struct crypto_aead *authenc = crypto_aead_reqtfm(req); |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 141 | struct aead_instance *inst = aead_alg_instance(authenc); |
Herbert Xu | 3c09f17 | 2007-08-30 16:24:15 +0800 | [diff] [blame] | 142 | struct crypto_authenc_ctx *ctx = crypto_aead_ctx(authenc); |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 143 | struct authenc_instance_ctx *ictx = aead_instance_ctx(inst); |
Steffen Klassert | cbdcf80 | 2009-08-05 19:35:34 +1000 | [diff] [blame] | 144 | struct crypto_ahash *auth = ctx->auth; |
| 145 | struct authenc_request_ctx *areq_ctx = aead_request_ctx(req); |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 146 | struct ahash_request *ahreq = (void *)(areq_ctx->tail + ictx->reqoff); |
Steffen Klassert | cbdcf80 | 2009-08-05 19:35:34 +1000 | [diff] [blame] | 147 | u8 *hash = areq_ctx->tail; |
| 148 | int err; |
| 149 | |
| 150 | hash = (u8 *)ALIGN((unsigned long)hash + crypto_ahash_alignmask(auth), |
| 151 | crypto_ahash_alignmask(auth) + 1); |
| 152 | |
| 153 | ahash_request_set_tfm(ahreq, auth); |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 154 | ahash_request_set_crypt(ahreq, req->dst, hash, |
| 155 | req->assoclen + req->cryptlen); |
| 156 | ahash_request_set_callback(ahreq, flags, |
| 157 | authenc_geniv_ahash_done, req); |
Steffen Klassert | cbdcf80 | 2009-08-05 19:35:34 +1000 | [diff] [blame] | 158 | |
| 159 | err = crypto_ahash_digest(ahreq); |
Herbert Xu | 3c09f17 | 2007-08-30 16:24:15 +0800 | [diff] [blame] | 160 | if (err) |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 161 | return err; |
Herbert Xu | 7c3d703 | 2007-12-10 16:15:41 +0800 | [diff] [blame] | 162 | |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 163 | scatterwalk_map_and_copy(hash, req->dst, req->assoclen + req->cryptlen, |
Herbert Xu | 7ba683a | 2007-12-02 18:49:21 +1100 | [diff] [blame] | 164 | crypto_aead_authsize(authenc), 1); |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 165 | |
Herbert Xu | 3c09f17 | 2007-08-30 16:24:15 +0800 | [diff] [blame] | 166 | return 0; |
| 167 | } |
| 168 | |
| 169 | static void crypto_authenc_encrypt_done(struct crypto_async_request *req, |
| 170 | int err) |
| 171 | { |
Herbert Xu | a697690 | 2008-08-23 01:04:06 +1000 | [diff] [blame] | 172 | struct aead_request *areq = req->data; |
| 173 | |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 174 | if (err) |
| 175 | goto out; |
Herbert Xu | e56dd56 | 2007-12-10 16:20:24 +0800 | [diff] [blame] | 176 | |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 177 | err = crypto_authenc_genicv(areq, 0); |
Herbert Xu | 3c09f17 | 2007-08-30 16:24:15 +0800 | [diff] [blame] | 178 | |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 179 | out: |
Herbert Xu | 180ce7e | 2010-04-26 09:14:05 +0800 | [diff] [blame] | 180 | authenc_request_complete(areq, err); |
Herbert Xu | 3c09f17 | 2007-08-30 16:24:15 +0800 | [diff] [blame] | 181 | } |
| 182 | |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 183 | static int crypto_authenc_copy_assoc(struct aead_request *req) |
| 184 | { |
| 185 | struct crypto_aead *authenc = crypto_aead_reqtfm(req); |
| 186 | struct crypto_authenc_ctx *ctx = crypto_aead_ctx(authenc); |
Herbert Xu | 7217d49 | 2016-07-12 13:17:34 +0800 | [diff] [blame] | 187 | SKCIPHER_REQUEST_ON_STACK(skreq, ctx->null); |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 188 | |
Herbert Xu | 7217d49 | 2016-07-12 13:17:34 +0800 | [diff] [blame] | 189 | skcipher_request_set_tfm(skreq, ctx->null); |
| 190 | skcipher_request_set_callback(skreq, aead_request_flags(req), |
| 191 | NULL, NULL); |
| 192 | skcipher_request_set_crypt(skreq, req->src, req->dst, req->assoclen, |
| 193 | NULL); |
| 194 | |
| 195 | return crypto_skcipher_encrypt(skreq); |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 196 | } |
| 197 | |
Herbert Xu | 3c09f17 | 2007-08-30 16:24:15 +0800 | [diff] [blame] | 198 | static int crypto_authenc_encrypt(struct aead_request *req) |
| 199 | { |
| 200 | struct crypto_aead *authenc = crypto_aead_reqtfm(req); |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 201 | struct aead_instance *inst = aead_alg_instance(authenc); |
Herbert Xu | 3c09f17 | 2007-08-30 16:24:15 +0800 | [diff] [blame] | 202 | struct crypto_authenc_ctx *ctx = crypto_aead_ctx(authenc); |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 203 | struct authenc_instance_ctx *ictx = aead_instance_ctx(inst); |
Steffen Klassert | 50beceb | 2010-03-03 22:41:08 +0800 | [diff] [blame] | 204 | struct authenc_request_ctx *areq_ctx = aead_request_ctx(req); |
Herbert Xu | 7217d49 | 2016-07-12 13:17:34 +0800 | [diff] [blame] | 205 | struct crypto_skcipher *enc = ctx->enc; |
Herbert Xu | e56dd56 | 2007-12-10 16:20:24 +0800 | [diff] [blame] | 206 | unsigned int cryptlen = req->cryptlen; |
Herbert Xu | 7217d49 | 2016-07-12 13:17:34 +0800 | [diff] [blame] | 207 | struct skcipher_request *skreq = (void *)(areq_ctx->tail + |
| 208 | ictx->reqoff); |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 209 | struct scatterlist *src, *dst; |
Herbert Xu | 3c09f17 | 2007-08-30 16:24:15 +0800 | [diff] [blame] | 210 | int err; |
| 211 | |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 212 | src = scatterwalk_ffwd(areq_ctx->src, req->src, req->assoclen); |
| 213 | dst = src; |
| 214 | |
| 215 | if (req->src != req->dst) { |
| 216 | err = crypto_authenc_copy_assoc(req); |
| 217 | if (err) |
| 218 | return err; |
| 219 | |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 220 | dst = scatterwalk_ffwd(areq_ctx->dst, req->dst, req->assoclen); |
| 221 | } |
| 222 | |
Herbert Xu | 7217d49 | 2016-07-12 13:17:34 +0800 | [diff] [blame] | 223 | skcipher_request_set_tfm(skreq, enc); |
| 224 | skcipher_request_set_callback(skreq, aead_request_flags(req), |
| 225 | crypto_authenc_encrypt_done, req); |
| 226 | skcipher_request_set_crypt(skreq, src, dst, cryptlen, req->iv); |
Herbert Xu | 3c09f17 | 2007-08-30 16:24:15 +0800 | [diff] [blame] | 227 | |
Herbert Xu | 7217d49 | 2016-07-12 13:17:34 +0800 | [diff] [blame] | 228 | err = crypto_skcipher_encrypt(skreq); |
Herbert Xu | 3c09f17 | 2007-08-30 16:24:15 +0800 | [diff] [blame] | 229 | if (err) |
| 230 | return err; |
| 231 | |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 232 | return crypto_authenc_genicv(req, aead_request_flags(req)); |
Herbert Xu | e56dd56 | 2007-12-10 16:20:24 +0800 | [diff] [blame] | 233 | } |
| 234 | |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 235 | static int crypto_authenc_decrypt_tail(struct aead_request *req, |
| 236 | unsigned int flags) |
Herbert Xu | e56dd56 | 2007-12-10 16:20:24 +0800 | [diff] [blame] | 237 | { |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 238 | struct crypto_aead *authenc = crypto_aead_reqtfm(req); |
| 239 | struct aead_instance *inst = aead_alg_instance(authenc); |
Herbert Xu | e56dd56 | 2007-12-10 16:20:24 +0800 | [diff] [blame] | 240 | struct crypto_authenc_ctx *ctx = crypto_aead_ctx(authenc); |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 241 | struct authenc_instance_ctx *ictx = aead_instance_ctx(inst); |
| 242 | struct authenc_request_ctx *areq_ctx = aead_request_ctx(req); |
| 243 | struct ahash_request *ahreq = (void *)(areq_ctx->tail + ictx->reqoff); |
Herbert Xu | 7217d49 | 2016-07-12 13:17:34 +0800 | [diff] [blame] | 244 | struct skcipher_request *skreq = (void *)(areq_ctx->tail + |
| 245 | ictx->reqoff); |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 246 | unsigned int authsize = crypto_aead_authsize(authenc); |
| 247 | u8 *ihash = ahreq->result + authsize; |
| 248 | struct scatterlist *src, *dst; |
Herbert Xu | e56dd56 | 2007-12-10 16:20:24 +0800 | [diff] [blame] | 249 | |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 250 | scatterwalk_map_and_copy(ihash, req->src, ahreq->nbytes, authsize, 0); |
Herbert Xu | e56dd56 | 2007-12-10 16:20:24 +0800 | [diff] [blame] | 251 | |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 252 | if (crypto_memneq(ihash, ahreq->result, authsize)) |
| 253 | return -EBADMSG; |
| 254 | |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 255 | src = scatterwalk_ffwd(areq_ctx->src, req->src, req->assoclen); |
| 256 | dst = src; |
| 257 | |
Harsh Jain | c34252f | 2016-06-29 00:24:43 +0530 | [diff] [blame] | 258 | if (req->src != req->dst) |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 259 | dst = scatterwalk_ffwd(areq_ctx->dst, req->dst, req->assoclen); |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 260 | |
Herbert Xu | 7217d49 | 2016-07-12 13:17:34 +0800 | [diff] [blame] | 261 | skcipher_request_set_tfm(skreq, ctx->enc); |
| 262 | skcipher_request_set_callback(skreq, aead_request_flags(req), |
| 263 | req->base.complete, req->base.data); |
| 264 | skcipher_request_set_crypt(skreq, src, dst, |
| 265 | req->cryptlen - authsize, req->iv); |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 266 | |
Herbert Xu | 7217d49 | 2016-07-12 13:17:34 +0800 | [diff] [blame] | 267 | return crypto_skcipher_decrypt(skreq); |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 268 | } |
| 269 | |
| 270 | static void authenc_verify_ahash_done(struct crypto_async_request *areq, |
| 271 | int err) |
| 272 | { |
| 273 | struct aead_request *req = areq->data; |
| 274 | |
Herbert Xu | e56dd56 | 2007-12-10 16:20:24 +0800 | [diff] [blame] | 275 | if (err) |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 276 | goto out; |
Herbert Xu | e56dd56 | 2007-12-10 16:20:24 +0800 | [diff] [blame] | 277 | |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 278 | err = crypto_authenc_decrypt_tail(req, 0); |
Herbert Xu | 3c09f17 | 2007-08-30 16:24:15 +0800 | [diff] [blame] | 279 | |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 280 | out: |
| 281 | authenc_request_complete(req, err); |
Herbert Xu | 3c09f17 | 2007-08-30 16:24:15 +0800 | [diff] [blame] | 282 | } |
| 283 | |
| 284 | static int crypto_authenc_decrypt(struct aead_request *req) |
| 285 | { |
| 286 | struct crypto_aead *authenc = crypto_aead_reqtfm(req); |
Herbert Xu | 481f34a | 2007-12-04 20:04:21 +1100 | [diff] [blame] | 287 | unsigned int authsize = crypto_aead_authsize(authenc); |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 288 | struct aead_instance *inst = aead_alg_instance(authenc); |
| 289 | struct crypto_authenc_ctx *ctx = crypto_aead_ctx(authenc); |
| 290 | struct authenc_instance_ctx *ictx = aead_instance_ctx(inst); |
| 291 | struct crypto_ahash *auth = ctx->auth; |
| 292 | struct authenc_request_ctx *areq_ctx = aead_request_ctx(req); |
| 293 | struct ahash_request *ahreq = (void *)(areq_ctx->tail + ictx->reqoff); |
| 294 | u8 *hash = areq_ctx->tail; |
Herbert Xu | 3c09f17 | 2007-08-30 16:24:15 +0800 | [diff] [blame] | 295 | int err; |
| 296 | |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 297 | hash = (u8 *)ALIGN((unsigned long)hash + crypto_ahash_alignmask(auth), |
| 298 | crypto_ahash_alignmask(auth) + 1); |
Herbert Xu | 481f34a | 2007-12-04 20:04:21 +1100 | [diff] [blame] | 299 | |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 300 | ahash_request_set_tfm(ahreq, auth); |
| 301 | ahash_request_set_crypt(ahreq, req->src, hash, |
| 302 | req->assoclen + req->cryptlen - authsize); |
| 303 | ahash_request_set_callback(ahreq, aead_request_flags(req), |
| 304 | authenc_verify_ahash_done, req); |
| 305 | |
| 306 | err = crypto_ahash_digest(ahreq); |
Herbert Xu | 3c09f17 | 2007-08-30 16:24:15 +0800 | [diff] [blame] | 307 | if (err) |
| 308 | return err; |
| 309 | |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 310 | return crypto_authenc_decrypt_tail(req, aead_request_flags(req)); |
Herbert Xu | 3c09f17 | 2007-08-30 16:24:15 +0800 | [diff] [blame] | 311 | } |
| 312 | |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 313 | static int crypto_authenc_init_tfm(struct crypto_aead *tfm) |
Herbert Xu | 3c09f17 | 2007-08-30 16:24:15 +0800 | [diff] [blame] | 314 | { |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 315 | struct aead_instance *inst = aead_alg_instance(tfm); |
| 316 | struct authenc_instance_ctx *ictx = aead_instance_ctx(inst); |
| 317 | struct crypto_authenc_ctx *ctx = crypto_aead_ctx(tfm); |
Steffen Klassert | cbdcf80 | 2009-08-05 19:35:34 +1000 | [diff] [blame] | 318 | struct crypto_ahash *auth; |
Herbert Xu | 7217d49 | 2016-07-12 13:17:34 +0800 | [diff] [blame] | 319 | struct crypto_skcipher *enc; |
| 320 | struct crypto_skcipher *null; |
Herbert Xu | 3c09f17 | 2007-08-30 16:24:15 +0800 | [diff] [blame] | 321 | int err; |
| 322 | |
Steffen Klassert | cbdcf80 | 2009-08-05 19:35:34 +1000 | [diff] [blame] | 323 | auth = crypto_spawn_ahash(&ictx->auth); |
Herbert Xu | 3c09f17 | 2007-08-30 16:24:15 +0800 | [diff] [blame] | 324 | if (IS_ERR(auth)) |
| 325 | return PTR_ERR(auth); |
| 326 | |
Eric Biggers | 60425a8 | 2016-10-28 09:52:19 -0700 | [diff] [blame] | 327 | enc = crypto_spawn_skcipher(&ictx->enc); |
Herbert Xu | 3c09f17 | 2007-08-30 16:24:15 +0800 | [diff] [blame] | 328 | err = PTR_ERR(enc); |
| 329 | if (IS_ERR(enc)) |
Steffen Klassert | cbdcf80 | 2009-08-05 19:35:34 +1000 | [diff] [blame] | 330 | goto err_free_ahash; |
Herbert Xu | 3c09f17 | 2007-08-30 16:24:15 +0800 | [diff] [blame] | 331 | |
Herbert Xu | 7217d49 | 2016-07-12 13:17:34 +0800 | [diff] [blame] | 332 | null = crypto_get_default_null_skcipher2(); |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 333 | err = PTR_ERR(null); |
| 334 | if (IS_ERR(null)) |
| 335 | goto err_free_skcipher; |
| 336 | |
Herbert Xu | 3c09f17 | 2007-08-30 16:24:15 +0800 | [diff] [blame] | 337 | ctx->auth = auth; |
| 338 | ctx->enc = enc; |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 339 | ctx->null = null; |
Richard Hartmann | f3542e6 | 2010-02-16 20:27:20 +0800 | [diff] [blame] | 340 | |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 341 | crypto_aead_set_reqsize( |
| 342 | tfm, |
Herbert Xu | 25df919 | 2015-05-11 17:47:53 +0800 | [diff] [blame] | 343 | sizeof(struct authenc_request_ctx) + |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 344 | ictx->reqoff + |
Herbert Xu | 25df919 | 2015-05-11 17:47:53 +0800 | [diff] [blame] | 345 | max_t(unsigned int, |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 346 | crypto_ahash_reqsize(auth) + |
| 347 | sizeof(struct ahash_request), |
Herbert Xu | 7217d49 | 2016-07-12 13:17:34 +0800 | [diff] [blame] | 348 | sizeof(struct skcipher_request) + |
| 349 | crypto_skcipher_reqsize(enc))); |
Herbert Xu | 3c09f17 | 2007-08-30 16:24:15 +0800 | [diff] [blame] | 350 | |
| 351 | return 0; |
| 352 | |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 353 | err_free_skcipher: |
Herbert Xu | 7217d49 | 2016-07-12 13:17:34 +0800 | [diff] [blame] | 354 | crypto_free_skcipher(enc); |
Steffen Klassert | cbdcf80 | 2009-08-05 19:35:34 +1000 | [diff] [blame] | 355 | err_free_ahash: |
| 356 | crypto_free_ahash(auth); |
Herbert Xu | 3c09f17 | 2007-08-30 16:24:15 +0800 | [diff] [blame] | 357 | return err; |
| 358 | } |
| 359 | |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 360 | static void crypto_authenc_exit_tfm(struct crypto_aead *tfm) |
Herbert Xu | 3c09f17 | 2007-08-30 16:24:15 +0800 | [diff] [blame] | 361 | { |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 362 | struct crypto_authenc_ctx *ctx = crypto_aead_ctx(tfm); |
Herbert Xu | 3c09f17 | 2007-08-30 16:24:15 +0800 | [diff] [blame] | 363 | |
Steffen Klassert | cbdcf80 | 2009-08-05 19:35:34 +1000 | [diff] [blame] | 364 | crypto_free_ahash(ctx->auth); |
Herbert Xu | 7217d49 | 2016-07-12 13:17:34 +0800 | [diff] [blame] | 365 | crypto_free_skcipher(ctx->enc); |
| 366 | crypto_put_default_null_skcipher2(); |
Herbert Xu | 3c09f17 | 2007-08-30 16:24:15 +0800 | [diff] [blame] | 367 | } |
| 368 | |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 369 | static void crypto_authenc_free(struct aead_instance *inst) |
| 370 | { |
| 371 | struct authenc_instance_ctx *ctx = aead_instance_ctx(inst); |
| 372 | |
| 373 | crypto_drop_skcipher(&ctx->enc); |
| 374 | crypto_drop_ahash(&ctx->auth); |
| 375 | kfree(inst); |
| 376 | } |
| 377 | |
| 378 | static int crypto_authenc_create(struct crypto_template *tmpl, |
| 379 | struct rtattr **tb) |
Herbert Xu | 3c09f17 | 2007-08-30 16:24:15 +0800 | [diff] [blame] | 380 | { |
Herbert Xu | 9ffde35a | 2007-12-17 20:12:49 +0800 | [diff] [blame] | 381 | struct crypto_attr_type *algt; |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 382 | struct aead_instance *inst; |
Steffen Klassert | cbdcf80 | 2009-08-05 19:35:34 +1000 | [diff] [blame] | 383 | struct hash_alg_common *auth; |
| 384 | struct crypto_alg *auth_base; |
Herbert Xu | 7217d49 | 2016-07-12 13:17:34 +0800 | [diff] [blame] | 385 | struct skcipher_alg *enc; |
Herbert Xu | 3c09f17 | 2007-08-30 16:24:15 +0800 | [diff] [blame] | 386 | struct authenc_instance_ctx *ctx; |
Herbert Xu | 9ffde35a | 2007-12-17 20:12:49 +0800 | [diff] [blame] | 387 | const char *enc_name; |
Herbert Xu | 3c09f17 | 2007-08-30 16:24:15 +0800 | [diff] [blame] | 388 | int err; |
| 389 | |
Herbert Xu | 9ffde35a | 2007-12-17 20:12:49 +0800 | [diff] [blame] | 390 | algt = crypto_get_attr_type(tb); |
Herbert Xu | 9ffde35a | 2007-12-17 20:12:49 +0800 | [diff] [blame] | 391 | if (IS_ERR(algt)) |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 392 | return PTR_ERR(algt); |
Herbert Xu | 3c09f17 | 2007-08-30 16:24:15 +0800 | [diff] [blame] | 393 | |
Herbert Xu | 5e4b8c1 | 2015-08-13 17:29:06 +0800 | [diff] [blame] | 394 | if ((algt->type ^ CRYPTO_ALG_TYPE_AEAD) & algt->mask) |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 395 | return -EINVAL; |
Herbert Xu | 9ffde35a | 2007-12-17 20:12:49 +0800 | [diff] [blame] | 396 | |
Steffen Klassert | cbdcf80 | 2009-08-05 19:35:34 +1000 | [diff] [blame] | 397 | auth = ahash_attr_alg(tb[1], CRYPTO_ALG_TYPE_HASH, |
Herbert Xu | 927ef32 | 2016-06-29 18:03:46 +0800 | [diff] [blame] | 398 | CRYPTO_ALG_TYPE_AHASH_MASK | |
| 399 | crypto_requires_sync(algt->type, algt->mask)); |
Herbert Xu | 3c09f17 | 2007-08-30 16:24:15 +0800 | [diff] [blame] | 400 | if (IS_ERR(auth)) |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 401 | return PTR_ERR(auth); |
Herbert Xu | 3c09f17 | 2007-08-30 16:24:15 +0800 | [diff] [blame] | 402 | |
Steffen Klassert | cbdcf80 | 2009-08-05 19:35:34 +1000 | [diff] [blame] | 403 | auth_base = &auth->base; |
| 404 | |
Herbert Xu | 9ffde35a | 2007-12-17 20:12:49 +0800 | [diff] [blame] | 405 | enc_name = crypto_attr_alg_name(tb[2]); |
| 406 | err = PTR_ERR(enc_name); |
| 407 | if (IS_ERR(enc_name)) |
Herbert Xu | 3c09f17 | 2007-08-30 16:24:15 +0800 | [diff] [blame] | 408 | goto out_put_auth; |
| 409 | |
Herbert Xu | 3c09f17 | 2007-08-30 16:24:15 +0800 | [diff] [blame] | 410 | inst = kzalloc(sizeof(*inst) + sizeof(*ctx), GFP_KERNEL); |
| 411 | err = -ENOMEM; |
| 412 | if (!inst) |
Herbert Xu | 9ffde35a | 2007-12-17 20:12:49 +0800 | [diff] [blame] | 413 | goto out_put_auth; |
Herbert Xu | e236d4a | 2007-11-22 23:11:53 +0800 | [diff] [blame] | 414 | |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 415 | ctx = aead_instance_ctx(inst); |
Herbert Xu | 3c09f17 | 2007-08-30 16:24:15 +0800 | [diff] [blame] | 416 | |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 417 | err = crypto_init_ahash_spawn(&ctx->auth, auth, |
| 418 | aead_crypto_instance(inst)); |
Herbert Xu | 3c09f17 | 2007-08-30 16:24:15 +0800 | [diff] [blame] | 419 | if (err) |
| 420 | goto err_free_inst; |
| 421 | |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 422 | crypto_set_skcipher_spawn(&ctx->enc, aead_crypto_instance(inst)); |
Eric Biggers | a35528e | 2016-10-28 09:51:13 -0700 | [diff] [blame] | 423 | err = crypto_grab_skcipher(&ctx->enc, enc_name, 0, |
| 424 | crypto_requires_sync(algt->type, |
| 425 | algt->mask)); |
Herbert Xu | 3c09f17 | 2007-08-30 16:24:15 +0800 | [diff] [blame] | 426 | if (err) |
| 427 | goto err_drop_auth; |
| 428 | |
Herbert Xu | 7217d49 | 2016-07-12 13:17:34 +0800 | [diff] [blame] | 429 | enc = crypto_spawn_skcipher_alg(&ctx->enc); |
Herbert Xu | 9ffde35a | 2007-12-17 20:12:49 +0800 | [diff] [blame] | 430 | |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 431 | ctx->reqoff = ALIGN(2 * auth->digestsize + auth_base->cra_alignmask, |
| 432 | auth_base->cra_alignmask + 1); |
| 433 | |
Herbert Xu | 9ffde35a | 2007-12-17 20:12:49 +0800 | [diff] [blame] | 434 | err = -ENAMETOOLONG; |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 435 | if (snprintf(inst->alg.base.cra_name, CRYPTO_MAX_ALG_NAME, |
Herbert Xu | 7217d49 | 2016-07-12 13:17:34 +0800 | [diff] [blame] | 436 | "authenc(%s,%s)", auth_base->cra_name, |
| 437 | enc->base.cra_name) >= |
Herbert Xu | 9ffde35a | 2007-12-17 20:12:49 +0800 | [diff] [blame] | 438 | CRYPTO_MAX_ALG_NAME) |
| 439 | goto err_drop_enc; |
| 440 | |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 441 | if (snprintf(inst->alg.base.cra_driver_name, CRYPTO_MAX_ALG_NAME, |
Steffen Klassert | cbdcf80 | 2009-08-05 19:35:34 +1000 | [diff] [blame] | 442 | "authenc(%s,%s)", auth_base->cra_driver_name, |
Herbert Xu | 7217d49 | 2016-07-12 13:17:34 +0800 | [diff] [blame] | 443 | enc->base.cra_driver_name) >= CRYPTO_MAX_ALG_NAME) |
Herbert Xu | 9ffde35a | 2007-12-17 20:12:49 +0800 | [diff] [blame] | 444 | goto err_drop_enc; |
| 445 | |
Herbert Xu | 7217d49 | 2016-07-12 13:17:34 +0800 | [diff] [blame] | 446 | inst->alg.base.cra_flags = (auth_base->cra_flags | |
| 447 | enc->base.cra_flags) & CRYPTO_ALG_ASYNC; |
| 448 | inst->alg.base.cra_priority = enc->base.cra_priority * 10 + |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 449 | auth_base->cra_priority; |
Herbert Xu | 7217d49 | 2016-07-12 13:17:34 +0800 | [diff] [blame] | 450 | inst->alg.base.cra_blocksize = enc->base.cra_blocksize; |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 451 | inst->alg.base.cra_alignmask = auth_base->cra_alignmask | |
Herbert Xu | 7217d49 | 2016-07-12 13:17:34 +0800 | [diff] [blame] | 452 | enc->base.cra_alignmask; |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 453 | inst->alg.base.cra_ctxsize = sizeof(struct crypto_authenc_ctx); |
Herbert Xu | 3c09f17 | 2007-08-30 16:24:15 +0800 | [diff] [blame] | 454 | |
Herbert Xu | 7217d49 | 2016-07-12 13:17:34 +0800 | [diff] [blame] | 455 | inst->alg.ivsize = crypto_skcipher_alg_ivsize(enc); |
| 456 | inst->alg.chunksize = crypto_skcipher_alg_chunksize(enc); |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 457 | inst->alg.maxauthsize = auth->digestsize; |
Herbert Xu | 3c09f17 | 2007-08-30 16:24:15 +0800 | [diff] [blame] | 458 | |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 459 | inst->alg.init = crypto_authenc_init_tfm; |
| 460 | inst->alg.exit = crypto_authenc_exit_tfm; |
Herbert Xu | 3c09f17 | 2007-08-30 16:24:15 +0800 | [diff] [blame] | 461 | |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 462 | inst->alg.setkey = crypto_authenc_setkey; |
| 463 | inst->alg.encrypt = crypto_authenc_encrypt; |
| 464 | inst->alg.decrypt = crypto_authenc_decrypt; |
Herbert Xu | 3c09f17 | 2007-08-30 16:24:15 +0800 | [diff] [blame] | 465 | |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 466 | inst->free = crypto_authenc_free; |
| 467 | |
| 468 | err = aead_register_instance(tmpl, inst); |
| 469 | if (err) |
| 470 | goto err_drop_enc; |
Herbert Xu | 3c09f17 | 2007-08-30 16:24:15 +0800 | [diff] [blame] | 471 | |
| 472 | out: |
Steffen Klassert | cbdcf80 | 2009-08-05 19:35:34 +1000 | [diff] [blame] | 473 | crypto_mod_put(auth_base); |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 474 | return err; |
Herbert Xu | 3c09f17 | 2007-08-30 16:24:15 +0800 | [diff] [blame] | 475 | |
Herbert Xu | 9ffde35a | 2007-12-17 20:12:49 +0800 | [diff] [blame] | 476 | err_drop_enc: |
| 477 | crypto_drop_skcipher(&ctx->enc); |
Herbert Xu | 3c09f17 | 2007-08-30 16:24:15 +0800 | [diff] [blame] | 478 | err_drop_auth: |
Steffen Klassert | cbdcf80 | 2009-08-05 19:35:34 +1000 | [diff] [blame] | 479 | crypto_drop_ahash(&ctx->auth); |
Herbert Xu | 3c09f17 | 2007-08-30 16:24:15 +0800 | [diff] [blame] | 480 | err_free_inst: |
| 481 | kfree(inst); |
Herbert Xu | 9ffde35a | 2007-12-17 20:12:49 +0800 | [diff] [blame] | 482 | out_put_auth: |
Herbert Xu | 3c09f17 | 2007-08-30 16:24:15 +0800 | [diff] [blame] | 483 | goto out; |
| 484 | } |
| 485 | |
Herbert Xu | 3c09f17 | 2007-08-30 16:24:15 +0800 | [diff] [blame] | 486 | static struct crypto_template crypto_authenc_tmpl = { |
| 487 | .name = "authenc", |
Herbert Xu | 92d95ba | 2015-07-30 17:53:16 +0800 | [diff] [blame] | 488 | .create = crypto_authenc_create, |
Herbert Xu | 3c09f17 | 2007-08-30 16:24:15 +0800 | [diff] [blame] | 489 | .module = THIS_MODULE, |
| 490 | }; |
| 491 | |
| 492 | static int __init crypto_authenc_module_init(void) |
| 493 | { |
| 494 | return crypto_register_template(&crypto_authenc_tmpl); |
| 495 | } |
| 496 | |
| 497 | static void __exit crypto_authenc_module_exit(void) |
| 498 | { |
| 499 | crypto_unregister_template(&crypto_authenc_tmpl); |
| 500 | } |
| 501 | |
| 502 | module_init(crypto_authenc_module_init); |
| 503 | module_exit(crypto_authenc_module_exit); |
| 504 | |
| 505 | MODULE_LICENSE("GPL"); |
| 506 | MODULE_DESCRIPTION("Simple AEAD wrapper for IPsec"); |
Kees Cook | 4943ba1 | 2014-11-24 16:32:38 -0800 | [diff] [blame] | 507 | MODULE_ALIAS_CRYPTO("authenc"); |