| /******************************************************************************* |
| * |
| * Copyright (c) 2011-2019 Olaf Bergmann (TZI) and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * and Eclipse Distribution License v. 1.0 which accompanies this distribution. |
| * |
| * The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html |
| * and the Eclipse Distribution License is available at |
| * http://www.eclipse.org/org/documents/edl-v10.php. |
| * |
| * Contributors: |
| * Olaf Bergmann - initial API and implementation |
| * Hauke Mehrtens - memory optimization, ECC integration |
| * Achim Kraus - session recovery |
| * Sachin Agrawal - rehandshake support |
| * Jon Shallow - platform dependent prng support |
| * |
| *******************************************************************************/ |
| |
| #include "tinydtls.h" |
| #include "dtls_prng.h" |
| |
| #include <stdlib.h> |
| |
| /** |
| * Fills \p buf with \p len random bytes. This is the default |
| * implementation for prng(). You might want to change prng() to use |
| * a better PRNG on your specific platform. |
| */ |
| int |
| dtls_prng(unsigned char *buf, size_t len) { |
| while (len--) |
| *buf++ = rand() & 0xFF; |
| return 1; |
| } |
| |
| void |
| dtls_prng_init(unsigned seed) { |
| srand(seed); |
| } |
| |