# Implementation of the User-based Security Model (USM) for SNMPv3

**SNMP USM** provides SNMP message level security according to RFC 3414 and RFC 3826. It implements primitives that can be used by a security subsystem.

Implemented features of USM:

* HMAC-MD5-96 Authentication Protocol
* HMAC-SHA-96 Authentication Protocol
* Timeliness verification
* DES encryption
* AES encryption

## License

Licensed under either of

* Apache License, Version 2.0 ([LICENSE-APACHE](LICENSE-APACHE) or <http://www.apache.org/licenses/LICENSE-2.0>)
* MIT license ([LICENSE-MIT](LICENSE-MIT) or <http://opensource.org/licenses/MIT>)

at your option.

## Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.