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
110 lines
2.5 KiB
C++
110 lines
2.5 KiB
C++
// Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include <openssl/cipher.h>
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#include <assert.h>
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#include <openssl/digest.h>
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#include <openssl/mem.h>
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#define PKCS5_SALT_LEN 8
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int EVP_BytesToKey(const EVP_CIPHER *type, const EVP_MD *md,
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const uint8_t *salt, const uint8_t *data, size_t data_len,
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unsigned count, uint8_t *key, uint8_t *iv) {
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EVP_MD_CTX c;
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uint8_t md_buf[EVP_MAX_MD_SIZE];
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unsigned addmd = 0;
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unsigned mds = 0, i;
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int rv = 0;
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unsigned nkey = EVP_CIPHER_key_length(type);
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unsigned niv = EVP_CIPHER_iv_length(type);
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assert(nkey <= EVP_MAX_KEY_LENGTH);
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assert(niv <= EVP_MAX_IV_LENGTH);
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if (data == NULL) {
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return nkey;
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}
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EVP_MD_CTX_init(&c);
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for (;;) {
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if (!EVP_DigestInit_ex(&c, md, NULL)) {
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goto err;
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}
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if (addmd++) {
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if (!EVP_DigestUpdate(&c, md_buf, mds)) {
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goto err;
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}
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}
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if (!EVP_DigestUpdate(&c, data, data_len)) {
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goto err;
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}
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if (salt != NULL) {
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if (!EVP_DigestUpdate(&c, salt, PKCS5_SALT_LEN)) {
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goto err;
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}
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}
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if (!EVP_DigestFinal_ex(&c, md_buf, &mds)) {
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goto err;
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}
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for (i = 1; i < count; i++) {
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if (!EVP_DigestInit_ex(&c, md, NULL) ||
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!EVP_DigestUpdate(&c, md_buf, mds) ||
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!EVP_DigestFinal_ex(&c, md_buf, &mds)) {
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goto err;
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}
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}
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i = 0;
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if (nkey) {
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for (;;) {
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if (nkey == 0 || i == mds) {
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break;
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}
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if (key != NULL) {
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*(key++) = md_buf[i];
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}
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nkey--;
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i++;
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}
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}
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if (niv && i != mds) {
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for (;;) {
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if (niv == 0 || i == mds) {
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break;
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}
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if (iv != NULL) {
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*(iv++) = md_buf[i];
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}
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niv--;
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i++;
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}
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}
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if (nkey == 0 && niv == 0) {
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break;
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}
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}
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rv = EVP_CIPHER_key_length(type);
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err:
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EVP_MD_CTX_cleanup(&c);
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OPENSSL_cleanse(md_buf, EVP_MAX_MD_SIZE);
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return rv;
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}
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