Correct Option: (a)
Solution
Public Key Infrastructure (PKI) is a technology for authenticating users and devices in the digital world. The basic idea is to have one or more trusted parties digitally sign documents certifying that a particular cryptographic key belongs to a particular user or device.
Context:The Central government has told the Delhi High Court that no blanket permission has been granted to any agency for interception or monitoring or decryption of any messages or information under the surveillance programmes like the Centralised Monitoring System (CMS), Network Traffic Analysis (NETRA) and National Intelligence Grid (NATGRID).
Background:The affidavit came in response to a petition seeking to constitute a permanent, independent oversight body for reviewing lawful interception and monitoring orders or warrants under the provisions of the Indian Telegraph Act and the Information Technology Act.
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