diff options
Diffstat (limited to 'crypto/echainiv.c')
| -rw-r--r-- | crypto/echainiv.c | 52 |
1 files changed, 9 insertions, 43 deletions
diff --git a/crypto/echainiv.c b/crypto/echainiv.c index e3d889b122e0..e0a2d3209938 100644 --- a/crypto/echainiv.c +++ b/crypto/echainiv.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * echainiv: Encrypted Chain IV Generator * @@ -10,12 +11,6 @@ * is performed after encryption (i.e., authenc). * * Copyright (c) 2015 Herbert Xu <herbert@gondor.apana.org.au> - * - * 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 <crypto/internal/geniv.h> @@ -37,7 +32,6 @@ static int echainiv_encrypt(struct aead_request *req) u64 seqno; u8 *info; unsigned int ivsize = crypto_aead_ivsize(geniv); - int err; if (req->cryptlen < ivsize) return -EINVAL; @@ -46,20 +40,9 @@ static int echainiv_encrypt(struct aead_request *req) info = req->iv; - if (req->src != req->dst) { - SKCIPHER_REQUEST_ON_STACK(nreq, ctx->sknull); - - skcipher_request_set_tfm(nreq, ctx->sknull); - skcipher_request_set_callback(nreq, req->base.flags, - NULL, NULL); - skcipher_request_set_crypt(nreq, req->src, req->dst, - req->assoclen + req->cryptlen, - NULL); - - err = crypto_skcipher_encrypt(nreq); - if (err) - return err; - } + if (req->src != req->dst) + memcpy_sglist(req->dst, req->src, + req->assoclen + req->cryptlen); aead_request_set_callback(subreq, req->base.flags, req->base.complete, req->base.data); @@ -118,18 +101,13 @@ static int echainiv_aead_create(struct crypto_template *tmpl, struct rtattr **tb) { struct aead_instance *inst; - struct crypto_aead_spawn *spawn; - struct aead_alg *alg; int err; - inst = aead_geniv_alloc(tmpl, tb, 0, 0); + inst = aead_geniv_alloc(tmpl, tb); if (IS_ERR(inst)) return PTR_ERR(inst); - spawn = aead_instance_ctx(inst); - alg = crypto_spawn_aead_alg(spawn); - err = -EINVAL; if (inst->alg.ivsize & (sizeof(u64) - 1) || !inst->alg.ivsize) goto free_inst; @@ -143,29 +121,17 @@ static int echainiv_aead_create(struct crypto_template *tmpl, inst->alg.base.cra_ctxsize = sizeof(struct aead_geniv_ctx); inst->alg.base.cra_ctxsize += inst->alg.ivsize; - inst->free = aead_geniv_free; - err = aead_register_instance(tmpl, inst); - if (err) - goto free_inst; - -out: - return err; - + if (err) { free_inst: - aead_geniv_free(inst); - goto out; -} - -static void echainiv_free(struct crypto_instance *inst) -{ - aead_geniv_free(aead_instance(inst)); + inst->free(inst); + } + return err; } static struct crypto_template echainiv_tmpl = { .name = "echainiv", .create = echainiv_aead_create, - .free = echainiv_free, .module = THIS_MODULE, }; |