A digital signature is primarily used to verify the authenticity and integrity of an electronic document or message, ensuring that it has not been altered since it was signed (Statement 3). Digital signatures rely on digital certificates, which are issued by Certifying Authorities (CAs) and contain the signer's public key and identity information. Digital signatures, often in conjunction with certificates, can also be used as a form of strong authentication, serving as proof of identity for accessing secure systems or information (Statement 2).
Consider the following statements: A digital signature is 1. an electronic record that identifies the certifying authority issuing it 2. used to serve as a proof of identity of an individual to access information or server on Internet 3. an electronic method of signing an electronic document and ensuring that the original content is unchanged Which of the statements given above is/are correct?
Asked in UPSC IAS 2019 · Topic: Cyber Security and Cyber Crimes (Cyber Security Technologies and Countermeasures: Firewalls, Intrusion Detection/Prevention Systems (IDS/IPS), Encryption, VPNs, Antivirus, Multi-factor Authentication)
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