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Understanding Digital Signatures and Their Legal Provisions in India

Defining Digital Signatures

A digital signature is a mathematical scheme employed for verifying the authenticity of digital messages or documents. It validates the integrity and authenticity of a digital communication or document, assuring that the message or document has not been tampered with in transit.

Analogous to a handwritten signature or a stamped seal, a digital signature provides an added level of security by using cryptographic techniques. It is unique to both the document and the signer and binds them together. Hence, digital signatures play an integral part in preventing forgery and information tampering in digital communications and transactions.

Legal Provisions Concerning Digital Signatures in India

The provisions relating to digital signatures in India are encapsulated under the Information Technology Act, 2000 (IT Act). Let's delve into the details:

1. Recognition of Digital Signatures

Section 5 of the IT Act gives legal recognition to digital signatures. It provides that when a law requires information or matter to be authenticated by signature, the requirement is deemed to be satisfied if it is done through digital signature as per the prescribed procedure.

2. Authentication of Digital Signatures

Under Section 15 of the IT Act, the authority authenticating a digital signature should not authenticate it unless:

  • The prospective subscriber has generated the key pair for the creation and verification of the signature.

  • The subscriber has control over the use of the private key.

3. Legal Consequences of Digital Signatures

Section 13 of the IT Act provides that a digital signature is considered secure if:

  • It was created during the operational period of a valid Digital Signature Certificate.

  • It is verified by using the public key listed in the Digital Signature Certificate of the sender.

  • It is unique to the subscriber affixing it.

  • It indicates the subscriber’s approval of the information to which it relates.

  • It is linked to the information in a manner that if the information is changed, the digital signature is invalidated.

Relevant Case Laws

Anvar P.V vs P.K. Basheer & Others - In this landmark judgment, the Supreme Court made it clear that in the case of electronic records, the certificate under Section 65B(4) of the Evidence Act is mandatory. It was held that secondary data of an electronic record could be admitted in evidence, only if the requirements under Section 65B are satisfied.

Vijay Pahwa vs D.B. Corp Ltd. & Others - The Delhi High Court affirmed the legal validity of digital signatures and recognised that digital signatures have the same validity and enforceability as traditional handwritten signatures.

Super Cassettes Industries Ltd. v. Myspace Inc. & Anr - The court upheld the fact that a valid digital signature is necessary to authenticate any electronic record. Further, such digital signature must be affixed by someone who expects to receive a legal benefit or suffer a legal liability.


In India, digital signatures are given legal recognition and validity under the Information Technology Act, 2000. They serve as an effective tool to maintain the integrity, authenticity and non-repudiation of electronic records. With the evolution of digital transactions, the role of digital signatures has become even more critical. However, it is essential to ensure the secure generation and use of these digital signatures to prevent their misuse.

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