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 "snmp_pbuf_stream.h" 43 44 /* According to RFC 3411 */ 45 #define SNMP_V3_MAX_ENGINE_ID_LENGTH 32 46 #define SNMP_V3_MAX_USER_LENGTH 32 47 48 #define SNMP_V3_MAX_AUTH_PARAM_LENGTH 12 49 #define SNMP_V3_MAX_PRIV_PARAM_LENGTH 8 50 51 #define SNMP_V3_AUTH_FLAG 0x01 52 #define SNMP_V3_PRIV_FLAG 0x02 53 54 #define SNMP_V3_MD5_LEN 16 55 #define SNMP_V3_SHA_LEN 20 56 57 u32_t snmpv3_get_engine_boots_internal(void); 58 u32_t snmpv3_get_engine_time_internal(void); 59 err_t snmpv3_auth(struct snmp_pbuf_stream* stream, u16_t length, const u8_t* key, u8_t algo, u8_t* hmac_out); 60 err_t snmpv3_crypt(struct snmp_pbuf_stream* stream, u16_t length, const u8_t* key, 61 const u8_t* priv_param, const u32_t engine_boots, const u32_t engine_time, u8_t algo, u8_t mode); 62 err_t snmpv3_build_priv_param(u8_t* priv_param); 63 64 #endif 65 66 #endif /* LWIP_HDR_APPS_SNMP_V3_PRIV_H */ 67