8e79f2ee9c
Based on Nekogram. Key additions: - Rebrand to FoxiGram (app name, APK name, applicationId com.foxigram.app) - Embedded Xray (VLESS+Reality) proxy client via JNI libxray.so - Bundled hidden one-tap proxies (LTE + WiFi), read-only in UI - Auto-restore proxy on restart, rebind to active network (LTE/WiFi) - Server credentials externalized to git-ignored XrayServers.java (+ template) - libxray Go source included; compiled .so, keystore, google-services.json ignored
73 lines
2.3 KiB
C++
73 lines
2.3 KiB
C++
// Copyright 2002-2016 The OpenSSL Project Authors. All Rights Reserved.
|
|
// Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved.
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// https://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
#include <openssl/ecdh.h>
|
|
|
|
#include <limits.h>
|
|
#include <string.h>
|
|
|
|
#include <openssl/digest.h>
|
|
#include <openssl/err.h>
|
|
#include <openssl/mem.h>
|
|
|
|
#include "../fipsmodule/ec/internal.h"
|
|
#include "../internal.h"
|
|
|
|
|
|
int ECDH_compute_key(void *out, size_t out_len, const EC_POINT *pub_key,
|
|
const EC_KEY *priv_key,
|
|
void *(*kdf)(const void *in, size_t inlen, void *out,
|
|
size_t *out_len)) {
|
|
if (priv_key->priv_key == NULL) {
|
|
OPENSSL_PUT_ERROR(ECDH, ECDH_R_NO_PRIVATE_VALUE);
|
|
return -1;
|
|
}
|
|
const EC_SCALAR *const priv = &priv_key->priv_key->scalar;
|
|
const EC_GROUP *const group = EC_KEY_get0_group(priv_key);
|
|
if (EC_GROUP_cmp(group, pub_key->group, NULL) != 0) {
|
|
OPENSSL_PUT_ERROR(EC, EC_R_INCOMPATIBLE_OBJECTS);
|
|
return -1;
|
|
}
|
|
|
|
EC_JACOBIAN shared_point;
|
|
uint8_t buf[EC_MAX_BYTES];
|
|
size_t buf_len;
|
|
if (!ec_point_mul_scalar(group, &shared_point, &pub_key->raw, priv) ||
|
|
!ec_get_x_coordinate_as_bytes(group, buf, &buf_len, sizeof(buf),
|
|
&shared_point)) {
|
|
OPENSSL_PUT_ERROR(ECDH, ECDH_R_POINT_ARITHMETIC_FAILURE);
|
|
return -1;
|
|
}
|
|
|
|
if (kdf != NULL) {
|
|
if (kdf(buf, buf_len, out, &out_len) == NULL) {
|
|
OPENSSL_PUT_ERROR(ECDH, ECDH_R_KDF_FAILED);
|
|
return -1;
|
|
}
|
|
} else {
|
|
// no KDF, just copy as much as we can
|
|
if (buf_len < out_len) {
|
|
out_len = buf_len;
|
|
}
|
|
OPENSSL_memcpy(out, buf, out_len);
|
|
}
|
|
|
|
if (out_len > INT_MAX) {
|
|
OPENSSL_PUT_ERROR(ECDH, ERR_R_OVERFLOW);
|
|
return -1;
|
|
}
|
|
|
|
return (int)out_len;
|
|
}
|