Secure communication in the presence of outsiders or enemies is practiced through the use of cryptography. Information protection uses a variety of strategies and approaches to prevent unauthorized access or disclosure. The main objective of cryptography is to maintain the confidentiality of the messages while making sure that only the intended receiver may read them.
By using algorithms and protocols, cryptography transforms plaintext data into cipher text, an unintelligible format that can only be decoded by the authorized recipient who also has the decryption key. Encryption is the process of transforming ordinary text into cipher text, and decryption is the opposite.
Hashing, public-key cryptography, and symmetric-key cryptography are a few examples of the several types of cryptography. Cryptography is a vital tool for safeguarding sensitive data in finance, healthcare, and government industries. It has a wide range of applications in modern technology, including secure communication, secure data storage, and digital signatures.