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- Dictionarycryptography/krɪpˈtɒɡrəfi/
noun
- 1. the art of writing or solving codes.
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Cryptography is the process of coding information to ensure only the intended recipient can read it. Learn about the types of cryptography, such as secret key, public key, and hash functions, and how to minimize the risks of cryptographic key attacks.
- What Is Cryptography?
- Features of Cryptography
- Types of Cryptography
- Applications of Cryptography
- Advantages of Cryptography
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Cryptography is a technique of securing information and communications through the use of codes so that only those persons for whom the information is intended can understand and process it. Thus preventing unauthorized access to information. The prefix “crypt” means “hidden” and the suffix “graphy” means “writing”. In Cryptography, the techniques ...
Confidentiality:Information can only be accessed by the person for whom it is intended and no other person except him can access it.Integrity:Information cannot be modified in storage or transition between sender and intended receiver without any addition to information being detected.Non-repudiation:The creator/sender of information cannot deny his intention to send information at a later stage.Authentication:The identities of the sender and receiver are confirmed. As well destination/origin of the information is confirmed.1. Symmetric Key Cryptography
It is an encryption system where the sender and receiver of a message use a single common key to encrypt and decrypt messages. Symmetric Key cryptographyis faster and simpler but the problem is that the sender and receiver have to somehow exchange keys securely. The most popular symmetric key cryptography systems are Data Encryption Systems (DES)and Advanced Encryption Systems (AES).
2. Hash Functions
There is no usage of any key in this algorithm. A hash value with a fixed length is calculated as per the plain text which makes it impossible for the contents of plain text to be recovered. Many operating systems use hash functions to encrypt passwords.
3. Asymmetric Key Cryptography
In Asymmetric Key Cryptography,a pair of keys is used to encrypt and decrypt information. A receiver’s public key is used for encryption and a receiver’s private key is used for decryption. Public keys and Private keys are different. Even if the public key is known by everyone the intended receiver can only decode it because he alone knows his private key. The most popular asymmetric key cryptography algorithm is the RSA algorithm.
Computer passwords: Cryptography is widely utilized in computer security, particularly when creating and maintaining passwords. When a user logs in, their password is hashed and compared to the has...Digital Currencies:To protect transactions and prevent fraud, digital currencies like Bitcoin also use cryptography. Complex algorithms and cryptographic keys are used to safeguard transactions, ma...Secure web browsing:Online browsing security is provided by the use of cryptography, which shields users from eavesdropping and man-in-the-middle assaults. Public key cryptography is used by the Se...Electronic signatures: Electronic signatures serve as the digital equivalent of a handwritten signature and are used to sign documents. Digital signatures are created using cryptography and can be...Access Control:Cryptography can be used for access control to ensure that only parties with the proper permissions have access to a resource. Only those with the correct decryption key can access t...Secure Communication:For secure online communication, cryptography is crucial. It offers secure mechanisms for transmitting private information like passwords, bank account numbers, and other sensi...Protection against attacks:Cryptography aids in the defense against various types of assaults, including replay and man-in-the-middle attacks. It offers strategies for spotting and stopping these a...Compliance with legal requirements: Cryptography can assist firms in meeting a variety of legal requirements, including data protection and privacy legislation.Cryptography is a technique of securing communication by converting plain text into ciphertext. Learn about its features, types, applications, and advantages with examples and FAQs.
Cryptography, or cryptology (from Ancient Greek: κρυπτός, romanized: kryptós "hidden, secret"; and γράφειν graphein, "to write", or -λογία-logia, "study", respectively), is the practice and study of techniques for secure communication in the presence of adversarial behavior.
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In computer science, cryptography refers to secure information and communication techniques derived from mathematical concepts and a set of rule-based calculations called algorithms, to transform messages in ways that are hard to decipher.
- Kathleen Richards
In our modern digital age, cryptography has become an essential cybersecurity tool for protecting sensitive information from hackers and other cybercriminals. Derived from the Greek word “kryptos,” meaning hidden, cryptography literally translates to “hidden writing.”
Cryptography is the technique of obfuscating or coding data to ensure secure communications. Learn about its origins, types, and uses in cybersecurity and online transactions.
Cryptography is the technique of encoding and decoding information to protect it from unauthorized access or interference. Learn about the types, principles and uses of cryptography, as well as the International Standards that specify and regulate it.
