If the same block of plaintext is encrypted again and again with the same key, it should not produce the same ciphertext block. If it does, then attackers can easily analyze the ciphertext and get information about the plaintext. To address the problem we use block...
AES or Advanced Encryption Standard is a symmetric encryption standard that is established by the US NIST (National Institute of Standards and Technology) in 2001. It is also a block cipher. It divides the input plaintext into several equal-sized blocks and then the...
Bluetooth uses symmetric key cryptography for authentication and encryption. When two Bluetooth devices pair with each other, they first generate an initialization key. The initialization key is used to generate a combination key in both devices. Once the combination...
Bluetooth is a wireless technology using which two devices can exchange data over a short distance. It is a packet-based protocol. A Bluetooth device first divides the data into packets and then the packets are transmitted over a Bluetooth channel. Bluetooth also...
When we pair two Bluetooth devices, the devices must authenticate each other to verify to which device a device is being paired. Bluetooth authentication may or may not be mutual depending on the application. At the time of authentication, one device initiates the...
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