In order to be able to use SNMP++v3.2 with DES encryption the DES library written by Eric Young (eay@mincom.oz.au) is needed. In contrast to the RSAEURO library, which has been used by former SNMP++v3.0 releases, the DES library from Eric Young is free even for profit oriented commercial use.
Please note that the SNMPv3 support in SNMP++ can be disabled by undefining _SNMPv3 in config_snmp_pp.h. In that case the DES library is optional.
SNMP++v3.x comes with an IDEA implementation which is disabled by default since v3.2.6b but can be enabled by defining the compiler flag _USE_IDEA. For commercial use of the IDEA algorithm, a license needs to be obtained from MediaCrypt AG.
AES encryption can be enabled using OpenSSL with defining _USE_OPENSSL in config_snmp_pp.h.
SNMP++v3.1.5 and later version pass the tests provided wiht the CERT/CC SNMPv1 Advisory http://www.cert.org/advisories/CA-2002-03.html.