Digital Signature...
It is an electronic equivalent of a handwritten signature, but it provides a higher level of security and trustworthiness.
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FAQ's
Digital Signature Creation: The person signing the document (the signatory) uses a private key to create a unique digital signature. The private key is securely stored and should only be accessible to the signatory.
Hashing: The digital signature is created by applying a mathematical algorithm called a hash function to the content of the document. This generates a fixed-length string of characters, known as a hash value or digest.
Encryption: The signatory's private key is used to encrypt the hash value, creating the digital signature. The encryption process ensures that only the corresponding public key can decrypt and verify the signature.
Digital Signature Verification: To verify the digital signature, the recipient of the document (or any party interested in verifying the authenticity) uses the signatory's public key to decrypt the signature and obtain the hash value.
Hash Comparison: The recipient then independently calculates the hash value of the received document using the same hash function. The calculated hash value is compared to the decrypted hash value obtained from the digital signature.
Integrity and Authenticity Check: If the two hash values match, it indicates that the document has not been altered since the digital signature was created, and the signature is considered valid. It verifies the integrity and authenticity of the document, ensuring that it originated from the signatory and has not been tampered with.
How a digital signature works....
Benefits of digital signature:
Authentication: They verify the identity of the signatory, ensuring that the document comes from the intended source.
Integrity: They ensure that the document has not been modified or tampered with after the digital signature was created.
Non-repudiation: The signatory cannot deny signing the document since the digital signature is uniquely linked to their private key.
Digital signatures are widely used in various contexts, including secure email communication, electronic transactions, digital contracts, and legal documents. They enhance the security, trust, and reliability of electronic transactions and help prevent fraud and unauthorized modifications to digital content.
Different digital signatures offered
Digital Signature Certificate for Indian Citizens (Class-3)
Digital Signature Certificate for Foreign Citizens and NRI's (Class-3)
Digital Signature Certificate for Company Incorporation
Digital Signature Certificate for DGFT
FAQ's
What is a digital signature?
A digital signature is an electronic way to prove the authenticity and integrity of a digital document or message. It helps verify the identity of the sender and ensures that the content has not been tampered with during transmission. Digital signatures use encryption technology to create a unique code that can only be generated by the intended sender.
How does a digital signature work?
When you digitally sign a document, your computer uses a mathematical algorithm to create a digital code unique to that document. This code, along with your digital certificate, is attached to the document. When someone receives the document, they can verify the signature using your digital certificate and ensure the document hasn't been altered since it was signed.
Are digital signatures legally valid in India?
Yes, digital signatures are legally valid in India under the Information Technology Act, 2000. They have the same legal status as physical signatures and can be used for various purposes, including contracts, agreements, and filing tax returns.
Do I need any special software or hardware for digital signatures?
To create a digital signature, you'll need a digital signature certificate (DSC) issued by a licensed Certifying Authority (CA). This certificate can be stored on a USB token or smart card. Additionally, you may need digital signature software to apply the signature to documents and verify signatures on received documents.
How do I get a digital signature certificate?
To obtain a digital signature certificate, you need to approach a licensed Certifying Authority (CA) in India. They will verify your identity and issue the certificate upon successful completion of the verification process. You can find a list of licensed CAs on the Controller of Certifying Authorities (CCA) website.
Can I use a digital signature for email?
Yes, digital signatures can be used for email communications. They provide an added layer of security by ensuring that the email content remains intact and unaltered during transit. You can sign your emails using digital signature software, and the recipient can verify the signature to confirm its authenticity.
Are digital signatures secure?
Yes, digital signatures are secure. They use encryption technology to create a unique code that is extremely difficult to forge. The recipient can verify the signature using the sender's digital certificate, ensuring the document's authenticity and integrity.
Can I use a digital signature on my mobile device?
Yes, you can use a digital signature on your mobile device. There are mobile applications available that allow you to create and apply digital signatures to documents directly from your smartphone or tablet.
Can digital signatures be used for online transactions?
Yes, digital signatures can be used for online transactions. They provide a secure way to authenticate and authorize digital transactions, ensuring that the parties involved are who they claim to be and that the transaction details remain unaltered.
How long is a digital signature valid?
The validity of a digital signature depends on the type of digital signature certificate obtained. Typically, digital signature certificates are issued with validity periods of one year, two years, or three years. After the validity period expires, you need to renew the certificate.