Mirror of BoringSSL (grpc依赖)
https://boringssl.googlesource.com/boringssl
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.
62 lines
2.3 KiB
62 lines
2.3 KiB
/* |
|
* Copyright 2002-2016 The OpenSSL Project Authors. All Rights Reserved. |
|
* Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved. |
|
* |
|
* Licensed under the OpenSSL license (the "License"). You may not use |
|
* this file except in compliance with the License. You can obtain a copy |
|
* in the file LICENSE in the source distribution or at |
|
* https://www.openssl.org/source/license.html |
|
*/ |
|
|
|
#ifndef OPENSSL_HEADER_ECDH_H |
|
#define OPENSSL_HEADER_ECDH_H |
|
|
|
#include <openssl/base.h> |
|
|
|
#include <openssl/ec_key.h> |
|
|
|
#if defined(__cplusplus) |
|
extern "C" { |
|
#endif |
|
|
|
|
|
// Elliptic curve Diffie-Hellman. |
|
|
|
|
|
// ECDH_compute_key calculates the shared key between |pub_key| and |priv_key|. |
|
// If |kdf| is not NULL, then it is called with the bytes of the shared key and |
|
// the parameter |out|. When |kdf| returns, the value of |*outlen| becomes the |
|
// return value. Otherwise, as many bytes of the shared key as will fit are |
|
// copied directly to, at most, |outlen| bytes at |out|. It returns the number |
|
// of bytes written to |out|, or -1 on error. |
|
OPENSSL_EXPORT int ECDH_compute_key( |
|
void *out, size_t outlen, const EC_POINT *pub_key, const EC_KEY *priv_key, |
|
void *(*kdf)(const void *in, size_t inlen, void *out, size_t *outlen)); |
|
|
|
// ECDH_compute_key_fips calculates the shared key between |pub_key| and |
|
// |priv_key| and hashes it with the appropriate SHA function for |out_len|. The |
|
// only value values for |out_len| are thus 24 (SHA-224), 32 (SHA-256), 48 |
|
// (SHA-384), and 64 (SHA-512). It returns one on success and zero on error. |
|
// |
|
// Note that the return value is different to |ECDH_compute_key|: it returns an |
|
// error flag (as is common for BoringSSL) rather than the number of bytes |
|
// written. |
|
// |
|
// This function allows the FIPS module to compute an ECDH and KDF within the |
|
// module boundary without taking an arbitrary function pointer for the KDF, |
|
// which isn't very FIPSy. |
|
OPENSSL_EXPORT int ECDH_compute_key_fips(uint8_t *out, size_t out_len, |
|
const EC_POINT *pub_key, |
|
const EC_KEY *priv_key); |
|
|
|
|
|
#if defined(__cplusplus) |
|
} // extern C |
|
#endif |
|
|
|
#define ECDH_R_KDF_FAILED 100 |
|
#define ECDH_R_NO_PRIVATE_VALUE 101 |
|
#define ECDH_R_POINT_ARITHMETIC_FAILURE 102 |
|
#define ECDH_R_UNKNOWN_DIGEST_LENGTH 103 |
|
|
|
#endif // OPENSSL_HEADER_ECDH_H
|
|
|