Contributors: 14
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Ard Biesheuvel |
249 |
44.54% |
2 |
11.76% |
| Jiri Benc |
143 |
25.58% |
1 |
5.88% |
| Herbert Xu |
56 |
10.02% |
1 |
5.88% |
| Xiang Gao |
35 |
6.26% |
1 |
5.88% |
| Jan-Simon Möller |
14 |
2.50% |
1 |
5.88% |
| Jouni Malinen |
11 |
1.97% |
1 |
5.88% |
| Ronald Wahl |
10 |
1.79% |
1 |
5.88% |
| Harvey Harrison |
9 |
1.61% |
2 |
11.76% |
| Dan Carpenter |
8 |
1.43% |
1 |
5.88% |
| Johannes Berg |
8 |
1.43% |
2 |
11.76% |
| Daniel Phan |
6 |
1.07% |
1 |
5.88% |
| Ilpo Järvinen |
6 |
1.07% |
1 |
5.88% |
| Waiman Long |
2 |
0.36% |
1 |
5.88% |
| Thomas Gleixner |
2 |
0.36% |
1 |
5.88% |
| Total |
559 |
|
17 |
|
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright 2003-2004, Instant802 Networks, Inc.
* Copyright 2005-2006, Devicescape Software, Inc.
* Copyright 2014-2015, Qualcomm Atheros, Inc.
*
* Rewrite: Copyright (C) 2013 Linaro Ltd <ard.biesheuvel@linaro.org>
*/
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/err.h>
#include <linux/scatterlist.h>
#include <crypto/aead.h>
#include "aead_api.h"
int aead_encrypt(struct crypto_aead *tfm, u8 *b_0, u8 *aad, size_t aad_len,
u8 *data, size_t data_len, u8 *mic)
{
size_t mic_len = crypto_aead_authsize(tfm);
struct scatterlist sg[3];
struct aead_request *aead_req;
int reqsize = sizeof(*aead_req) + crypto_aead_reqsize(tfm);
u8 *__aad;
int ret;
aead_req = kzalloc(reqsize + aad_len, GFP_ATOMIC);
if (!aead_req)
return -ENOMEM;
__aad = (u8 *)aead_req + reqsize;
memcpy(__aad, aad, aad_len);
sg_init_table(sg, 3);
sg_set_buf(&sg[0], __aad, aad_len);
sg_set_buf(&sg[1], data, data_len);
sg_set_buf(&sg[2], mic, mic_len);
aead_request_set_tfm(aead_req, tfm);
aead_request_set_crypt(aead_req, sg, sg, data_len, b_0);
aead_request_set_ad(aead_req, sg[0].length);
ret = crypto_aead_encrypt(aead_req);
kfree_sensitive(aead_req);
return ret;
}
int aead_decrypt(struct crypto_aead *tfm, u8 *b_0, u8 *aad, size_t aad_len,
u8 *data, size_t data_len, u8 *mic)
{
size_t mic_len = crypto_aead_authsize(tfm);
struct scatterlist sg[3];
struct aead_request *aead_req;
int reqsize = sizeof(*aead_req) + crypto_aead_reqsize(tfm);
u8 *__aad;
int err;
if (data_len == 0)
return -EINVAL;
aead_req = kzalloc(reqsize + aad_len, GFP_ATOMIC);
if (!aead_req)
return -ENOMEM;
__aad = (u8 *)aead_req + reqsize;
memcpy(__aad, aad, aad_len);
sg_init_table(sg, 3);
sg_set_buf(&sg[0], __aad, aad_len);
sg_set_buf(&sg[1], data, data_len);
sg_set_buf(&sg[2], mic, mic_len);
aead_request_set_tfm(aead_req, tfm);
aead_request_set_crypt(aead_req, sg, sg, data_len + mic_len, b_0);
aead_request_set_ad(aead_req, sg[0].length);
err = crypto_aead_decrypt(aead_req);
kfree_sensitive(aead_req);
return err;
}
struct crypto_aead *
aead_key_setup_encrypt(const char *alg, const u8 key[],
size_t key_len, size_t mic_len)
{
struct crypto_aead *tfm;
int err;
tfm = crypto_alloc_aead(alg, 0, CRYPTO_ALG_ASYNC);
if (IS_ERR(tfm))
return tfm;
err = crypto_aead_setkey(tfm, key, key_len);
if (err)
goto free_aead;
err = crypto_aead_setauthsize(tfm, mic_len);
if (err)
goto free_aead;
return tfm;
free_aead:
crypto_free_aead(tfm);
return ERR_PTR(err);
}
void aead_key_free(struct crypto_aead *tfm)
{
crypto_free_aead(tfm);
}