How to hack/crack a wifi password

 How to get entry to a wireless network?

You will want a wi-fi community enabled tool along with a laptop, tablet, smartphones, etc. You will even want to be in the transmission radius of a wireless network get right of entry to point. Most gadgets (if the wireless network option is turned on) will offer you with a list of available networks. If the community isn't password covered, then you definately simply need to click on connect. If it's miles password included, then you will want the password to advantage get entry to.

Wireless Network Authentication

Since the community is effortlessly available to everybody with a wireless network enabled tool, maximum networks are password included. Let’s observe some of the most usually used authentication techniques.

WEP

WEP is the acronym for Wired Equivalent Privacy. It was evolved for IEEE 802.11 WLAN requirements. Its aim became to provide the privacy equal to that provided through stressed out networks. WEP works by encrypting the information been transmitted over the community to maintain it secure from eavesdropping.

WEP Authentication

Open System Authentication (OSA) – this techniques grants get admission to to station authentication asked based at the configured access coverage.

Shared Key Authentication (SKA) – This technique sends to an encrypted challenge to the station soliciting for get right of entry to. The station encrypts the challenge with its key then responds. If the encrypted undertaking fits the AP cost, then access is granted.

WEP Weakness

WEP has sizeable design flaws and vulnerabilities.

The integrity of the packets is checked the usage of Cyclic Redundancy Check (CRC32). CRC32 integrity check may be compromised with the aid of capturing at the least two packets. The bits in the encrypted circulation and the checksum may be modified through the attacker in order that the packet is general by way of the authentication system. This leads to unauthorized get right of entry to to the community.

WEP uses the RC4 encryption algorithm to create circulation ciphers. The circulate cipher enter is made up of an preliminary cost (IV) and a mystery key. The duration of the initial value (IV) is 24 bits long at the same time as the name of the game key can both be forty bits or 104 bits lengthy. The total length of both the preliminary fee and secret can both be sixty four bits or 128 bits lengthy.The lower possible price of the name of the game key makes it smooth to crack it.

Weak Initial values combinations do no longer encrypt sufficiently. This makes them at risk of assaults.

WEP is based totally on passwords; this makes it prone to dictionary attacks.

Keys management is poorly implemented. Changing keys particularly on large networks is challenging. WEP does no longer offer a centralized key management system.

The Initial values can be reused

Because of those safety flaws, WEP has been deprecated in want of WPA

WPA

WPA is the acronym for Wi-Fi Protected Access. It is a protection protocol developed via the Wi-Fi Alliance in reaction to the weaknesses located in WEP. It is used to encrypt facts on 802.11 WLANs. It uses better Initial Values 48 bits in place of the 24 bits that WEP makes use of. It uses temporal keys to encrypt packets.

WPA Weaknesses

The collision avoidance implementation may be damaged

It is prone to denial of service assaults

Pre-shares keys use passphrases. Weak passphrases are prone to dictionary attacks.

How to Crack WiFI (Wireless) Networks

WEP cracking

Cracking is the procedure of exploiting security weaknesses in wi-fi networks and gaining unauthorized access. WEP cracking refers to exploits on networks that use WEP to enforce security controls. There are essentially two types of cracks namely;

Passive cracking– this type of cracking has no effect at the community visitors until the WEP security has been cracked. It is difficult to come across.

Active cracking– this sort of assault has an accelerated load impact on the community site visitors. It is straightforward to discover compared to passive cracking. It is greater powerful compared to passive cracking.

WiFi Password Hacker (WEP Cracking) Tools

Aircrack– network sniffer and WEP cracker. This WiFi password hacker tool may be download http://www.aircrack-ng.org ..

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