Revision 4ffd96c9621fcec3b84f3f997e036cc7077ec465 authored by Linus Torvalds on 19 May 2023, 18:05:42 UTC, committed by Linus Torvalds on 19 May 2023, 18:05:42 UTC
Pull arm64 fixes from Will Deacon: "A mixture of compiler/static checker resolutions and a couple of MTE fixes: - Avoid erroneously marking untagged pages with PG_mte_tagged - Always reset KASAN tags for destination page in copy_page() - Mark PMU header functions 'static inline' - Fix some sparse warnings due to missing casts" * tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: arm64: mte: Do not set PG_mte_tagged if tags were not initialized arm64: Also reset KASAN tag if page is not PG_mte_tagged arm64: perf: Mark all accessor functions inline ARM: perf: Mark all accessor functions inline arm64: vdso: Pass (void *) to virt_to_page() arm64/mm: mark private VM_FAULT_X defines as vm_fault_t
aead_api.c
// 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);
}
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