If the network security key is altered by someone or if you forget your network security key, then you will not be able to access Internet services like surfing on the internet, watching movies online or playing games online, etc. The network security key plays a very important role in connecting your devices to the router for you to access the Internet.
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How to Find Password on Router, Windows, and Android How to Find a Network Security Key for a Router? This is mainly used in the authorization and authentication processes of business organizations. WPA and WPA2 Enterprise: It deploys a 802.1x authentication server and RADIUS server authentication which is a much more secure one and is already described in detail in our previous tutorials for encryption and access. The data is encrypted by extracting the 128 bit key from the pre-shared key of 256 bit. WPA and WPA-2 -Personal (WPA-PSK): This is used for home networks and small-scale office networks as it doesn’t need server-based authentication. There are different divisions of the WPA depending upon the kind of user using it.
In this way, it replaces the cyclic redundancy check method for error detection and correction that was used by the WEP. It does have a message integrity check, which guards the data against viruses that can modify and re-transmit the packets according to themselves. This saves the packet from any unwanted access and attacks. The WPA deploys a temporary key integrity protocol (TKIP) which uses a per-packet key which means that it dynamically produces a fresh 128-bit key each time a packet arrives and allocates the same to the data packet.
The WPA and WPA-2 both work on the principle that after the validation of the key, the exchange of data between the host device and the access point is in an encrypted form. The host device that wants to connect to the network requires a security key to start the communication. Therefore, this method of encryption and authentication is less in practice and the WPA which is a more secure method than this has been evolved. Later the authentication and the association process will get completed and again the WEP key is used for encryption of the data packets using RC4.įrom the above process, it seems that this process is a secure one, but practically the key can easily be decoded by anyone by cracking the challenge frames. The response will then be decrypted by the access point and if it is identical to the challenge text, then it will transmit a positive reply. Using the WEP key, the client host will encrypt the challenge text and send it back to the access point. Then the access point in response sends back the clear-text challenge. While in shared key authentication, the WEP key is used for authentication by deploying a four-way challenge-response handshake process.įirstly, the host client sends the authentication request to the access point. Here, only the WEP key is used for the encryption process.
In the open system authentication method, the requesting client host does not need to present the credentials to the access point for authentication as any client can try to associate with the network. There are two kinds of authentication methods used, i.e., open system and shared key authentication. This 40 bit and 24 bit of IV makes a 64-bit WEP key. This key is combined with a 24-bit IV (initialization vector) to make an RC4 key. WEP uses a 40-bit key for encryption of the data packet. The most common types of network security key that are used for authorization on wireless networks include Wi-Fi protected access (WPA and WPA2) and wired equivalent privacy (WEP). The security key is of various kinds and is widely used everywhere in our day-to-day services like online banking, money transactions in the form of OTP’s (one time password), online shopping, accessing the Internet service, login into the mail account, or any network device, etc. This protects our network and devices from unwanted access. The security key also provisions to establish a secure connection between the requesting client and the serving network or wireless device like routers etc.
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The network security key is a kind of network password or passphrase in the form of a physical, digital signature, or biometric data password that is used to provide authorization and accessibility to the wireless network or device on which the client requests to connect with.