The main purpose of cryptography is to
Answers
Answer:
The purpose of cryptography is to protect data transmitted in the likely presence of an adversary.
cryptographic transformation of data is a procedure by which plaintext data is disguised, or encrypted, resulting in an altered text, called ciphertext, that does not reveal the original input. The ciphertext can be reverse-transformed by a designated recipient so that the original plaintext can be recovered.
Cryptography plays an essential role in-
1)Authentication. This process to prove the identity of an entity can be based on something you know, such as a password; something you have, such as an encryption key or card; something you are, such as biometric measurements, including retinal scans or voice recognition; or any combination of these.
2)Data confidentiality. With this property, information is not made available or disclosed to unauthorized individuals, entities, or processes. When two or more parties are involved in a communication, the purpose of confidentiality is to guarantee that only those parties can understand the data exchanged. Confidentiality is enforced by encryption.
3)Data integrity. This property refers to data that has not been changed, destroyed, or lost in an unauthorized or accidental manner. The need for data integrity is especially evident if data is transmitted across a nonsecure network, such as the Internet, where a man-in-the-middle attack can easily be mounted. Integrity is enforced by mathematical functions applied to the message being transmitted.
4)Nonrepudiation. Repudiation is the denial by one of the entities involved in a communication of having participated in all or part of the communication. Nonrepudiation is protection against repudiation and can be of two types.
Nonrepudiation with proof of origin provides the recipient of data with evidence that proves the origin of the data and thus protects the recipient against an attempt by the originator to falsely deny sending the data. Its purpose is to prove that a particular transaction took place, by establishing accountability of information about a particular event or action to its originating entity.
Nonrepudiation with proof of receipt provides the originator of data with evidence proving that data was received as addressed and thus protects the originator against an attempt by the recipient to falsely deny receiving the data.
In most cases, the term nonrepudiation is used as a synonym of nonrepudiation with proof of origin. Like integrity, nonrepudiation is based on mathematical functions applied to the data being generated during the transaction.
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Answer:
The answer to the given question is explained in the explanation.
Explanation:
Cryptography is a method of protecting personal or government information and communications through the use of codes, so that only those who want to see the information can read, browse, and process it. In computing and applications, cryptography refers to the security of basic information and communication techniques derived from mathematical concepts such as algebraic or Boolean algebra and a set of calculations based on on rules called algorithms and programming defined in computer languages such as Python or Java, to transform messages in ways that are difficult to decipher by any unwanted individuals.
The purpose of cryptography is to protect the data being transmitted when there may be an adversary. Cryptographic data transformation is a procedure in which plaintext data is disguised or encrypted, resulting in altered text, known as ciphertext, without revealing the original input. The ciphertext can be reverse-transformed by the specified recipient so that the original plaintext can be recovered.
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