AMX MVP-8400i manual Certificates Ca

Appendix B - Wireless Technology

Short for Advanced Encryption Standard, is a cipher currently approved by the NSA to protect US Government documents classified as Top Secret. The AES cipher is the first cipher protecting Top Secret information available to the general public.

CERTIFICATES (CA)

A certificate can have many forms, but at the most basic level, a certificate is an identity combined with a public key, and then signed by a certification authority. The certificate authority (CA) is a trusted external third party which "signs" or validates the certificate. When a certificate has been signed, it gains some cryptographic properties. AMX supports the following security certificates within three different formats:

-PEM (Privacy Enhanced Mail)

-DER (Distinguished Encoding Rules)

-PKCS12 (Public Key Cryptography Standard #12)

Typical certificate information can include the following items:

-Certificate Issue Date

-Extensions

-Issuer

-Public Key

-Serial Number

-Signature Algorithm

-User

-Version

MIC

Short for Message Integrity Check, prevents forged packets from being sent. Through WEP it was possible to alter a packet whose content was known even if it had not been decrypted.

TKIP

Short for Temporal Key Integration, is part of the IEEE 802.11i encryption standard for wireless LANs. TKIP provides per-packet key mixing, message integrity check and re-keying mechanism, thus ensuring every data packet is sent with its own unique encryption key. Key mixing increases the complexity of decoding the keys by giving the hacker much less data that has been encrypted using any one key.

WEP

Short for Wired Equivalent Privacy (WEP), is a scheme used to secure wireless networks (Wi-Fi). A wireless network broadcasts messages using radio which are particularly susceptible to hacker attacks. WEP was intended to provide the confidentiality and security comparable to that of a traditional wired network. As a result of identified weaknesses in this scheme, WEP was superseded by Wi-Fi Protected Access (WPA), and then by the full IEEE 802.11i standard (also known as WPA2).

WPA

Wi-Fi Protected Access (WPA and WPA2) is a class of system used to secure wireless (Wi-Fi) computer networks. It was created in response to several serious weaknesses researchers had found in the previous WEP system. WPA implements the majority of the IEEE 802.11i standard, and was intended as an intermediate measure to take the place of WEP while 802.11i was prepared (WPA2).

WPA is designed to work with all wireless network interface cards, but not necessarily with first generation wireless access points.

To resolve problems with WEP, the Wi-Fi Alliance released WPA (FIG. 75) which integrated 802.1x, TKIP and MIC. Within the WPA specifications the RC4 cipher engine was maintained from WEP. RC4 is widely used in SSL (Secure Socket Layer) to protect internet traffic.

WPA2

Also know as IEEE 802.11i, is an amendment to the 802.11 standard specifying security mechanisms for wireless networks. The 802.11i scheme makes use of the Advanced Encryption Standard (AES) block cipher; WEP and WPA use the RC4 stream cipher.

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