Source Freepik for wirelessThe term WPA2-PSK refers to Wi-Fi Protected Access 2—Pre-Shared-Key or WPA2-Personal, which is used to protect network access and data transmission by using an AES Advanced Encryption Standard or TKIP Temporal Key Integrity Protocol encryption method. It is designed for home users and small offices to protect their network without an enterprise authentication server. The user can encrypt a network with WPA2-PSK by providing a plain-English passphrase between eight and 63 characters long. How does WPA2-PSK work?Evolution of Wireless Network Security ProtocolDifferent WPA2-PSK security options based on the use of encryption methodHow does WPA2-PSK work?Advantages of using WPA2-PSKCan WPA2-PSK be hacked?Which is more secure, WPA-PSK or WPA2-PSK? How does WPA2-PSK work? To encrypt a network with WPA2-PSK you provide your router not with an encryption key, but rather with a plain-English passphrase between 8 and 63 characters long. Using a technology called TKIP for Temporal Key Integrity Protocol, that passphrase, along with the network SSID, is used to generate unique encryption keys for each wireless client. And those encryption keys are constantly changed. Although WEP also supports passphrases, it does so only as a way to more easily create static keys, which are usually comprised of the hex characters 0-9 and A-F. Evolution of Wireless Network Security Protocol Wireless security is a significant aspect while considering the transmission of data over a wireless network. Insecure transmission of data may lead to the installation of malware, data loss, stealing of account credentials, and more. Therefore, it’s essential to understand the evolution of the basic wireless security standards and their specifications, including WEP, WPA, WPA2, WPA3, TKIP, and AES, before coming to WPA2-PSK. WEP Wired Equivalent Privacy or WEP was introduced in 1997 as the first security standard for wireless networks. It uses hexadecimal value key 64 or 128 bit, and it’s static, as it uses a single key to encrypt all data regardless of device. WEP makes the data uninterpretable to data intruders. However, some systems were developed to decrypt the data, which led to the origin of WPA. WPA Due to the vulnerabilities of WEP, the Wi-Fi Alliance made revisions to WEP over time and came up with WPA, or Wi-Fi Protected Access, in 2003. WPA is based on TKIP, which uses 128-bit keys for each data packet along with Message Integrity Checks MIC. It makes it difficult for intruders to decrypt the data; however, the weakness of some WPA elements made it possible for data intruders. WPA2 Although WPA2, based on a Robust Security Network RSN, was introduced in 2004, it didn’t become mandatory for all new devices with the wireless network until 2006. The main difference between WPA2 and WPA is the association of CCMP, or Counter Mode with Cipher Block Chaining Message Authentication Code Protocol, which uses AES algorithms. AES uses the key length of 128, 192, or 256-bit. Therefore, it’s unbreakable even by brute force. WPA2 has two modes WPA2-PSK and WPA2-Enterprise. WPA3 As the third iteration of WPA, WPA3 was introduced in 2018, and its enterprise version uses AES 256-bit in GCM Galois/Counter Mode along with SHA 384 Secure Hash Algorithm instead of MAC in WPA2. It also replaces PSK with SAE Simultaneous Authentication of Equals along with minimum algorithm encryption of AES-128. TKIP TKIP uses the increasing key length up to 128-bits and creates a unique 48-bit serial number for each data packet that prevents collision attacks. TKIP also helps to reduce the risk of replay attacks as the 48-bit serial number takes thousands of years to repeat. However, it’s vulnerable to attackers as they only need an authentication key. AES AES uses CCMP protocol, and it encrypts plaintext into ciphertext instead of using stream ciphers. It comes with a key length of a maximum of 256-bits, as it is more difficult for hackers to decrypt the data. Different WPA2-PSK security options based on the use of encryption method WPA2-PSK TKIP WPA2-PSK TKIP is a WPA2-PSK wireless security standard with the TKIP encryption method along with CCMP. It generates encryption keys by using a pre-shared key and an SSID Service Set Identifier. Even though it’s not a completely secure protocol, it’s possible to connect with older devices that can’t connect with the latest WPA2-PSK AES. WPA2-PSK AES It is the most secure personal version of WPA2, and it uses the latest AES encryption method. WPA2-PSK AES uses long passwords to secure data and offers a more secure network for home users. However, if the user is using an old hardware, they may experience reduced network performance as WPA2 needs more processing power to safeguard their networks. WPA2-PSK TKIP/AES WPA2-PSK TKIP/AES is often used by those whose system does not support AES. While using WPA2-PSK TKIP/AES, users may take more time to transmit data than using WPA2-PSK AES, which may lead to low productivity. How does WPA2-PSK work? WPA2-PSK encrypts the data by using a router with a long passphrase of eight to 63 characters. The TKIP encryption method of WPA2-PSK also requires a network SSID along with a passphrase to generate encryption keys that are unique for each wireless client. While using WPA2-PSK AES, the user generates a password to connect with the router, and the user can connect to WLAN when the router identifies the user by matching the password. WPA2-PSK encryption can secure the data that is transmitted between the router and the network device through a wireless connection. Advantages of using WPA2-PSK Provides an added layer of protection by using the AES encryption protocol. Eliminates the risk of using a shared password. Supports TKIP and AES protocols; therefore, both old and new devices can use this wireless security standard. Can WPA2-PSK be hacked? Like all other wireless security standards, WPA2-PSK isn’t 100% secure against hacking. When the user tries to connect with a wireless network, it’s essential to go through the process of 4-way handshake, a process of exchanging authentication messages between the user and the access point to generate encryption keys. During this process, hackers can easily get the password by using software or hardware tools available. Which is more secure, WPA-PSK or WPA2-PSK? WPA2-PSK offers a high-speed network connection. WPA2-PSK is a hardware security module, whereas WPA-PSK is a software security module. WPA2-PSK uses modern security standard WPA2 along with TKIP or AES encryption protocol, whereas WPA-PSK can only use TKIP encryption protocol. WPA2-PSK uses longer passwords than WPA-PSK and, therefore, is more secure. Read more about the differences between WEP and WPA in the “Did You Know?” section of Webopedia. Vangie BealVangie Beal is a freelance business and technology writer covering Internet technologies and online business since the late '90s.

Langkah3 – Gunakan tools Hashcat (v.4.2.0 atau diatasnya) sebagai password cracking tool untuk mengetahui kata sandi WPA PSK (Pre-Shared Key) dan Anda sudah berhasil membobol password wifi. Anda sudah berhasil mengetahui password dari wifi yang ditargetkan, dalam proses cracking akan membutuhkan waktu tergantung panjang dan kompleksitasnya.

22 Mar 2014 Networking Protocolo de segurança wireless WPA2 é considerado o mais seguro actualmente. Com as ofertas de pacotes triple-play Tv + Internet + Telefone, as redes wireless passaram a fazer parte da “mobília” das nossas casas. Sendo esta uma tecnologia que funciona através de ondas rádio,é importante que se configure a melhor segurança para que os “intrusos” não entrem na nossa rede. Depois do protocolo de segurança WEP ter sido quebrado, há uns anos, agora um conjunto de investigadores mostrou que quebrar o WPA2 protocolo mais seguro para redes domésticos é simples. Um conjunto de 3 investigadores da Grécia e Reino Unido anunciaram recentemente que o Protocolo de segurança WPA2 - Wi-Fi Protected Access 2 é vulnerável. Segundo os investigadores, este protocolo que é considerado o mais seguro actualmente para redes domésticas, tem várias falhem que comprometem qualquer rede wireless configurada com este protocolo de segurança…e mais, a violação da rede pode ser feita de uma forma muito simples. Tal como o seu antecessor, o WPA, o WPA2 oferece mecanismos de autenticação e criptografia, garantindo a confidencialidade, autenticidade e integridade dos dados numa rede wireless. Para colmatar tal problema que é grave, os investigadores aconselham que a comunidade de investigadores comece desde já a pensar num sucessor do WPA2 de referir que além do WPA Personal, que usa uma chave pré-partilhada PSK, ainda existe a versão Enterprise que pode fazer uso de serviços externos de autenticação ex. Radius ou Tacacs mas que não é suportado pela maioria dos routers wireless domésticos. Mas como é possível atacar uma rede configurada com WPA2+PSK? De acordo com o que foi apresentado, os investigadores dizem que um “simples” ataque de força bruta, para descobrir a chave do WPA2 pode levar ao sucesso do ataque. No entanto, é importante referir que a complexidade do ataque aumenta com a dimensão da chave PSK escolhida. No entanto, a grande vulnerabilidade do WPA2 está na fase de autenticação isto porque o uso do protocolo de segurança WPA2 obriga a que haja re-autenticações periódicas, para que a chave partilhada seja alterada. No entanto, os investigadores dizem que durante esse processo, os equipamentos acabam por ficar com portas abertas temporariamente. Como se proteger? Tal como referido, uma chave de maior dimensão dificulta o ataque. Nesse sentido, os leitores com rede wireless devem mudar para o protocolo de segurança WPA2 que é o mais forte actualmente apesar de agora se saber que é vulnerável, mas usem uma chave complexa e de grande dimensão. De referir que, o WPA2 suporta criptografia até 256 bits o que permite criar chaves até 63 caracteres. Sabe quanto tempo é necessário para quebrarem a vossa password wireless? Veja aqui Via phys Tidakada yang lebih sederhana: –Tampilkan sandi nirkabel yang disimpan di ponsel atau tablet– Jika Anda tertarik masuk ke jaringan wifi yang tidak memiliki sandi, tonton tutorialnya. Cara memecahkan sandi nirkabel WPA, WPA2, atau WEP dengan BackTrack [] jawaban. keamanan maksimum dengan Wi-Fi alias Radius Server. ^{Sehinggapenggemar wifi dan memiliki kemampuan hacking wireless mampu dengan mudah membobol enkripsi tersebut. WPA-PSK mempunyai decryption yang ada pada WEP. Wpa adalah model kompatible dengan spesifikasi standar draf IEEE 802.11i. Tapi ingat! Anda perlu pastikan wireless router anda dan wifi adapter anda support WPA dan WPA2. 4} fjEHT.

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