Cryptocurrency: Types, Challenges and Applications Cryptocurrency is a digital or virtual form of currency that utilizes cryptography to secure financial transactions, control the creation of additional units, and verify the transfer of assets. It is decentralized and operates on a technology called blockchain, which is a distributed ledger that records all transactions across multiple computers. Crypto is gaining popularity worldwide due to its potential to revolutionize traditional financial systems. In this response, I will discuss the types of cryptocurrencies, the challenges they face, and their applications. It is used to ensure the confidentiality, integrity, and authenticity of data. Cryptography techniques involve various algorithms and protocols that are designed to make data transmission secure and resistant to unauthorized access or modification. Some common cryptographic methods include encryption, decryption, hashing, and digital signatures. Cryptography plays a crucial r...