You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
45 lines
1.7 KiB
45 lines
1.7 KiB
/* Copyright (c) 2014, 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. */
|
|
|
|
#ifndef OPENSSL_HEADER_HKDF_H
|
|
#define OPENSSL_HEADER_HKDF_H
|
|
|
|
#include <openssl/base.h>
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
|
|
/* Computes HKDF (as specified by RFC 5869) of initial keying material |secret|
|
|
* with |salt| and |info| using |digest|, and outputs |out_len| bytes to
|
|
* |out_key|. It returns one on success and zero on error.
|
|
*
|
|
* HKDF is an Extract-and-Expand algorithm. It does not do any key stretching,
|
|
* and as such, is not suited to be used alone to generate a key from a
|
|
* password. */
|
|
OPENSSL_EXPORT int HKDF(uint8_t *out_key, size_t out_len, const EVP_MD *digest,
|
|
const uint8_t *secret, size_t secret_len,
|
|
const uint8_t *salt, size_t salt_len,
|
|
const uint8_t *info, size_t info_len);
|
|
|
|
|
|
#if defined(__cplusplus)
|
|
} /* extern C */
|
|
#endif
|
|
|
|
#define HKDF_F_HKDF 100
|
|
#define HKDF_R_OUTPUT_TOO_LARGE 100
|
|
|
|
#endif /* OPENSSL_HEADER_HKDF_H */
|
|
|