chromium/third_party/boringssl/src/crypto/evp/p_hkdf.c

/* Copyright (c) 2022, Google Inc.
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */

#include <openssl/evp.h>

#include <openssl/bytestring.h>
#include <openssl/err.h>
#include <openssl/hkdf.h>
#include <openssl/kdf.h>
#include <openssl/mem.h>

#include "../internal.h"
#include "internal.h"


HKDF_PKEY_CTX;

static int pkey_hkdf_init(EVP_PKEY_CTX *ctx) { … }

static int pkey_hkdf_copy(EVP_PKEY_CTX *dst, EVP_PKEY_CTX *src) { … }

static void pkey_hkdf_cleanup(EVP_PKEY_CTX *ctx) { … }

static int pkey_hkdf_derive(EVP_PKEY_CTX *ctx, uint8_t *out, size_t *out_len) { … }

static int pkey_hkdf_ctrl(EVP_PKEY_CTX *ctx, int type, int p1, void *p2) { … }

const EVP_PKEY_METHOD hkdf_pkey_meth = …;

int EVP_PKEY_CTX_hkdf_mode(EVP_PKEY_CTX *ctx, int mode) { … }

int EVP_PKEY_CTX_set_hkdf_md(EVP_PKEY_CTX *ctx, const EVP_MD *md) { … }

int EVP_PKEY_CTX_set1_hkdf_key(EVP_PKEY_CTX *ctx, const uint8_t *key,
                               size_t key_len) { … }

int EVP_PKEY_CTX_set1_hkdf_salt(EVP_PKEY_CTX *ctx, const uint8_t *salt,
                                size_t salt_len) { … }

int EVP_PKEY_CTX_add1_hkdf_info(EVP_PKEY_CTX *ctx, const uint8_t *info,
                                size_t info_len) { … }