Skip to content
WhatsApp Channel Join Now
Telegram Channel Join Now
Instagram Join Now

Digital Signature Certificate 2026: DSC Validity ও Verification Guide

In this article

Digital Signature Certificate বা DSC দিয়ে নির্দিষ্ট Electronic Document ও Online Filing-এ ডিজিটাল স্বাক্ষর করা হয়। MCA Filing, GST-সংক্রান্ত কিছু কাজ এবং বিভিন্ন সরকারি বা Business Workflow-তে DSC ব্যবহৃত হতে পারে।

DSC কীভাবে কাজ করে?

DSC-তে Certificate Holder-এর পরিচয় ও Cryptographic Public Key সম্পর্কিত তথ্য থাকে। Digital Signature যাচাইয়ের মাধ্যমে স্বাক্ষরের পরে Document পরিবর্তিত হয়েছে কি না সম্পর্কে ধারণা পাওয়া যায়।

PDF-এ Signature Verify করবেন কীভাবে?

একটি উপযুক্ত PDF Reader-এ Signed Document খুলুন। Signature Panel থেকে Certificate Details, Signature Validity এবং Document Integrity Status দেখুন। Certificate Chain বা Trust Warning থাকলে তার কারণ যাচাই করুন।

Licensed Certifying Authority

ভারতে অনুমোদিত Certifying Authority-দের তালিকা Controller of Certifying Authorities-এর সরকারি Website থেকে যাচাই করুন। Certificate কেনার আগে Provider-এর পরিচয় ও বর্তমান অনুমোদন নিশ্চিত করুন।

Expiry ও Revocation কেন জরুরি?

Certificate Expire বা Revoke হলে Signature Verification-এ সতর্কতা দেখা যেতে পারে। Signing Time, Trusted Timestamp এবং Certificate Status-এর প্রভাব আলাদা হতে পারে।

সাধারণ ভুল

PDF-এ শুধু Signature-এর ছবি থাকলেই তা Cryptographic Digital Signature নয়। Valid Signature থাকলেও Document-এর প্রতিটি দাবি সত্য—এমন নিশ্চয়তা নেই।

DSC Classes and Practical Uses

Digital signatures are used in electronic filing and document approval workflows. The certificate type and assurance level required can differ between a corporate filing, a tender submission and another service. Follow the receiving portal's current DSC requirements instead of assuming that any certificate works everywhere.

Certificate Chain and Trust Warnings

When verifying a digitally signed PDF, a reader may report that the signature is cryptographically valid but the signer's identity is not trusted locally. These are distinct checks. Inspect the issuer, certificate chain, signing time and revocation information. Use the Controller of Certifying Authorities' official resources to identify licensed authorities.

DSC Expiry, Renewal and Revocation

A certificate has a validity period and may be revoked before expiry. If a DSC is lost, compromised or no longer controlled by its authorised holder, contact the issuing Certifying Authority promptly. Renewal or replacement procedures depend on the provider and applicable identity verification rules.

DSC Token and Password Security

Some signing workflows use a cryptographic USB token or other protected signing mechanism. Do not lend the token, share its PIN or permit unknown persons to sign documents on your behalf. A signature may have legal consequences even if the signer did not read the document carefully.

FAQ

Q: Where should I check current eligibility, fees and rules?

A: Use the official source below because conditions and procedures can change.

Q: Is application submission the same as approval?

A: No. Approval or payment depends on the relevant authority and verification.

Official Website

Visit the official portal

Share with Your Friends
Found this helpful? Share it:
All Info India
Written by

All Info India

All Information is a comprehensive platform dedicated to providing accurate and up-to-date information. Whether it's the latest technical news, job updates, educational resources, or other important details, our goal is to keep you informed and empowered. With a focus on reliability and relevance, All Information aims to be your one-stop destination for everything you need.

Leave a Comment

Your email address will not be published. Please don’t share phone numbers, OTPs or personal documents in comments.

Scroll to Top