1 /** 2 * @file 3 * Additional SNMPv3 functionality RFC3414 and RFC3826 (internal API, do not use in client code). 4 */ 5 6 /* 7 * Copyright (c) 2016 Elias Oenal. 8 * All rights reserved. 9 * 10 * Redistribution and use in source and binary forms, with or without modification, 11 * are permitted provided that the following conditions are met: 12 * 13 * 1. Redistributions of source code must retain the above copyright notice, 14 * this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright notice, 16 * this list of conditions and the following disclaimer in the documentation 17 * and/or other materials provided with the distribution. 18 * 3. The name of the author may not be used to endorse or promote products 19 * derived from this software without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 22 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 23 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT 24 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 25 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT 26 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 29 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY 30 * OF SUCH DAMAGE. 31 * 32 * Author: Elias Oenal <lwip@eliasoenal.com> 33 */ 34 35 #ifndef LWIP_HDR_APPS_SNMP_V3_PRIV_H 36 #define LWIP_HDR_APPS_SNMP_V3_PRIV_H 37 38 #include "lwip/apps/snmp_opts.h" 39 40 #if LWIP_SNMP && LWIP_SNMP_V3 41 42 #include "lwip/apps/snmpv3.h" 43 #include "snmp_pbuf_stream.h" 44 45 /* According to RFC 3411 */ 46 #define SNMP_V3_MAX_ENGINE_ID_LENGTH 32 47 #define SNMP_V3_MAX_USER_LENGTH 32 48 49 #define SNMP_V3_MAX_AUTH_PARAM_LENGTH 12 50 #define SNMP_V3_MAX_PRIV_PARAM_LENGTH 8 51 52 #define SNMP_V3_MD5_LEN 16 53 #define SNMP_V3_SHA_LEN 20 54 55 typedef enum 56 { 57 SNMP_V3_PRIV_MODE_DECRYPT = 0, 58 SNMP_V3_PRIV_MODE_ENCRYPT = 1 59 } snmpv3_priv_mode_t; 60 61 s32_t snmpv3_get_engine_boots_internal(void); 62 err_t snmpv3_auth(struct snmp_pbuf_stream* stream, u16_t length, const u8_t* key, snmpv3_auth_algo_t algo, u8_t* hmac_out); 63 err_t snmpv3_crypt(struct snmp_pbuf_stream* stream, u16_t length, const u8_t* key, 64 const u8_t* priv_param, const u32_t engine_boots, const u32_t engine_time, snmpv3_priv_algo_t algo, snmpv3_priv_mode_t mode); 65 err_t snmpv3_build_priv_param(u8_t* priv_param); 66 void snmpv3_enginetime_timer(void *arg); 67 68 #endif 69 70 #endif /* LWIP_HDR_APPS_SNMP_V3_PRIV_H */ 71