Digital Signature and Electronic Signature

E-Signature and Digital Signature: Differentiate between Electronic Signature and Digital Signature.

The IT Act, 2008 mentions both electronic signature and digital signature. An electronic signature is data in electronic form, which is used by the signatory to sign.

Electronic signatures are a legal concept distinct from digital signatures, a cryptographic mechanism often used to implement electronic signatures.

While an electronic signature can be as simple as a name entered in an electronic document, digital signatures are increasingly used in e-commerce and in regulatory filings to implement electronic signatures in a cryptographically protected way.

Digital Signatures are more authentic than electronic signatures. Electronic signatures are used for verification of document while Digital Signatures are used for securing the document.

Electronic Signature can be biometric, name typed at the end of a mail, digitalized version of conventional signature.

Digital signature uses two-way protection with encryption and decryption. Electronic signatures are technologically neutral and the Act does not specify any technology for its creation while digital signature follows specific technology based approach.

For example, usage oi hash functions, use of public key cryptography system. Digital Signatures have validity of maximum three years, while electronic signatures have no such limits on validity.

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