Role of Cryptography for Security
With each new IoT device added to the network for data gathering the potential attack for unauthorized access exponentially increases, and which possess a security challenge. Deploying also increases hacking risks because data exists in different Locations. To minimize those risk is where cryptography plays an important factor.
The main task of cryptography is to secure communication channels. For example, developers can use cryptographic Transport Layer Security protocol which encrypts the data to ensure that information remains secured and confidential. This confidentiality allows only the intended recipient to unlock the message and access the information.
There are also other options to secure data by single-key or symmetric-key encryption algorithms such as the Advanced Encryption Standard (AES). In this same key is used for encryption and decryption and necessary to share between sender and reciver.
Whereas there is asymmetric-key encryption which is unlike symmetric. It has two keys that are public key and private key. Public keys can be shared publically but private key can only be accessible to the one who has matched paired key.
Lightweight cryptography is split into two types symmetric and asymmetric Block cipher and stream cipher. Symmetric ciphers use reduce key length.
Cryptography in IoT (Internet of Things)
Cryptography plays a vital role in securing information and data through the use of codes that transform the data into an unreadable format without a proper key thus preventing unauthorized access. In simple words, we can say that organizations use cryptography to secure communication channels.