Cyber Security & Cryptographic
In computer science, cryptography is the study of techniques for secure communication and information protection in the presence of adversaries.
Cryptography involves the use of mathematical algorithms and protocols to transform data into a form that is unintelligible to anyone who does not possess a secret key or password. This process, known as encryption, helps to protect the confidentiality of the information being transmitted or stored.
In addition to confidentiality, cryptography also aims to ensure the integrity and authenticity of information. This can be achieved through the use of digital signatures, which use a combination of encryption and hashing algorithms to ensure that a message has not been tampered with and was indeed sent by the claimed sender.
Cryptography is a critical component of modern computer security, as it is used to protect sensitive data such as passwords, financial information, and personal data. It is used in a wide range of applications, including online transactions, email encryption, and virtual private networks (VPNs).
Cryptography is the practice of securing communication from third-party entities and unauthorized access by converting data into a form that is unintelligible without the use of a secret key or password. It is a method of protecting the confidentiality, integrity, and authenticity of information.
Cryptography has been used for thousands of years, with early examples including the use of simple ciphers by the ancient Greeks and Romans to encode military and diplomatic messages. Today, cryptography is used in a wide range of applications, including securing online transactions, protecting passwords and other sensitive data, and ensuring the privacy of electronic communications.
There are two main types of cryptography: symmetric-key cryptography and public-key cryptography. In symmetric-key cryptography, the same key is used for both encryption and decryption of data. In public-key cryptography, there are two different keys: a public key that can be shared with anyone, and a private key that is kept secret and is used for decryption.
Cryptography is an important aspect of cybersecurity and is essential for protecting sensitive information from unauthorized access or theft.