nvidia-open-gpu-kernel-modules/kernel-open/nvidia/libspdm_hkdf_sha.c

/*
* SPDX-FileCopyrightText: Copyright (c) 2023 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
* SPDX-License-Identifier: MIT
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* Prototypes and checks taken from DMTF: Copyright 2021-2022 DMTF. All rights reserved.
* License: BSD 3-Clause License. For full text see link: https://github.com/DMTF/libspdm/blob/main/LICENSE.md
*/

#include "internal_crypt_lib.h"

bool libspdm_hkdf_sha256_extract_and_expand(const uint8_t *key, size_t key_size,
                                            const uint8_t *salt, size_t salt_size,
                                            const uint8_t *info, size_t info_size,
                                            uint8_t *out, size_t out_size)
{
    return lkca_hkdf_extract_and_expand("hmac(sha256)", key, key_size,
                                           salt, salt_size, info, info_size,
                                           out, out_size);
}

bool libspdm_hkdf_sha256_extract(const uint8_t *key, size_t key_size,
                                 const uint8_t *salt, size_t salt_size,
                                 uint8_t *prk_out, size_t prk_out_size)
{
    if (prk_out_size != (256 / 8))
        return false;

    return libspdm_hmac_sha256_all(key, key_size, salt, salt_size, prk_out);
}

bool libspdm_hkdf_sha256_expand(const uint8_t *prk, size_t prk_size,
                                const uint8_t *info, size_t info_size,
                                uint8_t *out, size_t out_size)
{
    return lkca_hkdf_expand("hmac(sha256)", prk, prk_size, info, info_size,
                          out, out_size);
}

bool libspdm_hkdf_sha384_extract_and_expand(const uint8_t *key, size_t key_size,
                                            const uint8_t *salt, size_t salt_size,
                                            const uint8_t *info, size_t info_size,
                                            uint8_t *out, size_t out_size)
{
    return lkca_hkdf_extract_and_expand("hmac(sha384)", key, key_size,
                                        salt, salt_size, info, info_size,
                                        out, out_size);
}

bool libspdm_hkdf_sha384_extract(const uint8_t *key, size_t key_size,
                                 const uint8_t *salt, size_t salt_size,
                                 uint8_t *prk_out, size_t prk_out_size)
{
        if (prk_out_size != (384 / 8))
            return false;

        return libspdm_hmac_sha384_all(key, key_size, salt, salt_size, prk_out);
}

bool libspdm_hkdf_sha384_expand(const uint8_t *prk, size_t prk_size,
                                const uint8_t *info, size_t info_size,
                                uint8_t *out, size_t out_size)
{
    return lkca_hkdf_expand("hmac(sha384)", prk, prk_size, info, info_size,
                          out, out_size);
}

bool libspdm_hkdf_sha512_extract_and_expand(const uint8_t *key, size_t key_size,
                                            const uint8_t *salt, size_t salt_size,
                                            const uint8_t *info, size_t info_size,
                                            uint8_t *out, size_t out_size)
{
    return lkca_hkdf_extract_and_expand("hmac(sha512)", key, key_size,
                                        salt, salt_size, info, info_size, out,
                                        out_size);
}

bool libspdm_hkdf_sha512_extract(const uint8_t *key, size_t key_size,
                                 const uint8_t *salt, size_t salt_size,
                                 uint8_t *prk_out, size_t prk_out_size)
{
    if (prk_out_size != (512 / 8))
        return false;

    return libspdm_hmac_sha512_all(key, key_size, salt, salt_size, prk_out);
}

bool libspdm_hkdf_sha512_expand(const uint8_t *prk, size_t prk_size,
                                const uint8_t *info, size_t info_size,
                                uint8_t *out, size_t out_size)
{
    return lkca_hkdf_expand("hmac(sha512)", prk, prk_size, info, info_size,
                            out, out_size);
}