Question 1

What is the Meaning of Public Key Cryptography?

Accepted Answer

Public Key Cryptography is a cryptographic system that employs a pair of mathematically linked keys: a public key, which can be openly distributed, and a private key, which must be kept secret by its owner. This asymmetric approach allows for secure communication where one key encrypts data and only the other key can decrypt it, or one key signs data and the other verifies the signature.

Question 2

What is the Context of Public Key Cryptography?

Accepted Answer

This cryptographic method operates within digital communication frameworks, establishing a foundational layer for securing data transmission and authenticating identities across various distributed networks. It is essential for upholding the integrity and confidentiality of sensitive information, including electronic health records and secure telemedicine interactions, by providing a robust security architecture.

Question 3

What is the Significance of Public Key Cryptography?

Accepted Answer

The practical importance of Public Key Cryptography lies in its capacity to enable secure digital transactions, protect personal health information, and verify the authenticity of digital identities in an interconnected environment. This system is instrumental in safeguarding patient privacy and ensuring data integrity during clinical data exchange, effectively mitigating the risks of unauthorized access or data manipulation.

Question 4

What is the Mechanism of Public Key Cryptography?

Accepted Answer

The core mechanism relies on the unique mathematical relationship between the public and private key pair; data encrypted using a recipient's public key can only be decrypted by their corresponding private key. Conversely, a digital signature generated with a private key can be verified by the associated public key, confirming the sender's identity and the unaltered status of the data. This fundamental asymmetry ensures secure, one-way operations for both confidentiality and authentication protocols.

Question 5

What is the Application of Public Key Cryptography?

Accepted Answer

Public Key Cryptography finds extensive application in securing web browsing through HTTPS, authenticating digital signatures for official documents, encrypting email communications, and establishing virtual private networks. Within healthcare, it is critically applied to secure patient portals, facilitate electronic prescription systems, and ensure the protected transmission of remote diagnostic data, thereby building trust in digital health services.

Question 6

What is the Metric of Public Key Cryptography?

Accepted Answer

The effectiveness of public key cryptography is assessed by the computational difficulty required to deduce a private key from its public counterpart, commonly quantified by key length, such as 2048-bit RSA. System audits and adherence to stringent security standards, like HIPAA for data protection, serve to monitor its proper implementation and evaluate its resilience against potential cryptanalytic vulnerabilities.

Question 7

What is the Risk of Public Key Cryptography?

Accepted Answer

Significant risks associated with Public Key Cryptography include the compromise of the private key, which could lead to unauthorized data decryption or fraudulent digital signatures. Improper management of key generation or storage, the presence of algorithmic weaknesses, or inadequate implementation practices can expose sensitive information, thereby jeopardizing patient confidentiality and the integrity of data within clinical systems.

Public Key Cryptography

Meaning

Context

Significance

Mechanism

Application

Metric

Risk

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