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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/lib/crypto/riscv/aes-riscv64-zvkned.S
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/* SPDX-License-Identifier: Apache-2.0 OR BSD-2-Clause */

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//

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// This file is dual-licensed, meaning that you can use it under your

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// choice of either of the following two licenses:

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//

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// Copyright 2023 The OpenSSL Project Authors. All Rights Reserved.

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//

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// Licensed under the Apache License 2.0 (the "License"). You can obtain

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// a copy in the file LICENSE in the source distribution or at

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// https://www.openssl.org/source/license.html

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//

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// or

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//

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// Copyright (c) 2023, Christoph Müllner <christoph.muellner@vrull.eu>

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// Copyright (c) 2023, Phoebe Chen <phoebe.chen@sifive.com>

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// Copyright (c) 2023, Jerry Shih <jerry.shih@sifive.com>

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// Copyright 2024 Google LLC

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// All rights reserved.

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//

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// Redistribution and use in source and binary forms, with or without

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// modification, are permitted provided that the following conditions

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// are met:

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// 1. Redistributions of source code must retain the above copyright

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//    notice, this list of conditions and the following disclaimer.

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// 2. Redistributions in binary form must reproduce the above copyright

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//    notice, this list of conditions and the following disclaimer in the

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//    documentation and/or other materials provided with the distribution.

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//

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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

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// The generated code of this file depends on the following RISC-V extensions:

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// - RV64I

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// - RISC-V Vector ('V') with VLEN >= 128

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// - RISC-V Vector AES block cipher extension ('Zvkned')

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#include <linux/linkage.h>

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.text

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.option arch, +zvkned

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#include "../../arch/riscv/crypto/aes-macros.S"

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#define RNDKEYS		a0

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#define KEY_LEN		a1

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#define OUTP		a2

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#define INP		a3

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.macro	__aes_crypt_zvkned	enc, keybits

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	vle32.v		v16, (INP)

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	aes_crypt	v16, \enc, \keybits

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	vse32.v		v16, (OUTP)

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	ret

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.endm

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.macro	aes_crypt_zvkned	enc

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	aes_begin	RNDKEYS, 128f, 192f, KEY_LEN

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	__aes_crypt_zvkned	\enc, 256

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128:

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	__aes_crypt_zvkned	\enc, 128

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192:

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	__aes_crypt_zvkned	\enc, 192

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.endm

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// void aes_encrypt_zvkned(const u32 rndkeys[], int key_len,

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//			   u8 out[AES_BLOCK_SIZE], const u8 in[AES_BLOCK_SIZE]);

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SYM_FUNC_START(aes_encrypt_zvkned)

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	aes_crypt_zvkned	1

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SYM_FUNC_END(aes_encrypt_zvkned)

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// void aes_decrypt_zvkned(const u32 rndkeys[], int key_len,

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//			   u8 out[AES_BLOCK_SIZE], const u8 in[AES_BLOCK_SIZE]);

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SYM_FUNC_START(aes_decrypt_zvkned)

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	aes_crypt_zvkned	0

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SYM_FUNC_END(aes_decrypt_zvkned)

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