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@@ -56,8 +56,10 @@ $ pip install pysnmp
to download and install PySNMP along with its dependencies:
* [PyASN1](http://snmplabs.com/pyasn1/)
-* [PyCryptodomex](https://pycryptodome.readthedocs.io) (required only if SNMPv3 encryption is in use)
* [PySMI](http://snmplabs.com/pysmi/) (required for MIB services only)
+* A supported cryptography backend (required only if SNMPv3 encryption is in use)
+ * [pyca/cryptography](http://cryptography.io/) for Python 2.7 and 3.4+
+ * [PyCryptodomex](https://pycryptodome.readthedocs.io) for Python 2.4-2.6 and 3.2-3.3
Besides the library, command-line [SNMP utilities](https://github.com/etingof/pysnmp-apps)
written in pure-Python could be installed via: