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b67427bd3b
- The abstraction from crypto framework was not well suitable to MBEDTLS, so I decided to move everything into an own file. - I removed several #defines and created function prototypes instead - this is more type-safe, and users don't need to reinvent the function signatures. - Header files were splitted into a public and a private part. - Only SNMPv3 authentication was tested, privacy not yet.
67 lines
2.5 KiB
C
67 lines
2.5 KiB
C
/**
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* @file
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* Additional SNMPv3 functionality RFC3414 and RFC3826.
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*/
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/*
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* Copyright (c) 2016 Elias Oenal.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
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* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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* OF SUCH DAMAGE.
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*
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* Author: Elias Oenal <lwip@eliasoenal.com>
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*/
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#ifndef LWIP_HDR_APPS_SNMP_V3_PRIV_H
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#define LWIP_HDR_APPS_SNMP_V3_PRIV_H
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#include "lwip/apps/snmp_opts.h"
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#if LWIP_SNMP && LWIP_SNMP_V3
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#include "snmp_pbuf_stream.h"
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/* According to RFC 3411 */
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#define SNMP_V3_MAX_ENGINE_ID_LENGTH 32
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#define SNMP_V3_MAX_USER_LENGTH 32
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#define SNMP_V3_MAX_AUTH_PARAM_LENGTH 12
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#define SNMP_V3_MAX_PRIV_PARAM_LENGTH 8
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#define SNMP_V3_AUTH_FLAG 0x01
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#define SNMP_V3_PRIV_FLAG 0x02
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#define SNMP_V3_MD5_LEN 16
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#define SNMP_V3_SHA_LEN 20
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u32_t snmpv3_get_engine_boots_internal(void);
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u32_t snmpv3_get_engine_time_internal(void);
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err_t snmpv3_auth(struct snmp_pbuf_stream* stream, u16_t length, const u8_t* key, u8_t algo, u8_t* hmac_out);
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err_t snmpv3_crypt(struct snmp_pbuf_stream* stream, u16_t length, const u8_t* key,
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const u8_t* priv_param, const u32_t engine_boots, const u32_t engine_time, u8_t algo, u8_t mode);
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err_t snmpv3_build_priv_param(u8_t* priv_param);
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#endif
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#endif /* LWIP_HDR_APPS_SNMP_V3_PRIV_H */
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