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What Is Digital Signature Under IT Act,2000?

Digital Signature is a process that guarantees that the contents of a message have not been altered in transit. When a person, the server, digitally sign a document, adds a one-way hash (encryption) of the message content using public and private key pair.

The Other Person can still read it, but the process creates a "signature" that only the server's public key can decrypt. The other person, using the server's public key, can then validate the sender as well as the integrity of message contents.If the digital signature does not match the public key in the digital certificate, then the other person knows that the message has been altered.


Issuance Of Digital Signature
  • A licensed Certifying Authority (CA) issues the digital signature. Certifying Authority (CA) means a person who has been granted a license to issue a digital signature certificate under Section 24 of the Indian IT-Act 2000, which can be presented electronically to prove one’s identity, to access information or services on the Internet or to sign certain documents digitally.

  • The time generally taken by Certifying Authority to issue a digital signature certificate may vary from three to seven working days. Also on fulfillment of terms and conditions digital signature certificate is issued by some CA’s on same day based on eKYC for Aadhaar Holders.

Validity

The Certifying Authorities are authorized to issue a Digital Signature Certificate with a validity of one or two years.


Legal Status

Digital Signatures are legally admissible in a Court of Law, as provided under the provisions of IT Act, 2000.

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