A Digital Signature Certificate (DSC) is a secure digital key that certifies the identity of the holder, issued by a Certifying Authority (CA). It typically contains your identity (name, email, country, APNIC account name and your public key). Digital Certificates use Public Key Infrastructure meaning data that has been digitally signed or encrypted by a private key can only be decrypted by its corresponding public key. A digital certificate is a electronic "credit card" that establishes your credentials when doing business or other transactions on the Web.
Assurance Level: These certificates will be issued for both business personnel and private individuals use. These certificates will confirm that the information in the application provided by the subscriber does not conflict with the information in well-recognized consumer databases.
Applicability: This level is relevant to environments where risks and consequences of data compromise are moderate. This may include transactions having substantial monetary value or risk of fraud, or involving access to private information where the likelihood of malicious access is substantial.
Assurance Level: This certificate will be issued to individuals as well as organizations. As these are high assurance certificates, primarily intended for e-commerce applications, they shall be issued to individuals only on their personal (physical) appearance before the Certifying Authorities.
Applicability: This level is relevant to environments where threats to data are high or the consequences of the failure of security services are high. This may include very high value transactions or high levels of fraud risk.
if you looking for Class 3 Digital Signature for eTendering then it is better to buy Class 3 Signing & Encryption DSC - Organization User. Maximum Organizations provide only Signing Certificate details and user buy the same but after some time when he needs to do work on any website where encryption is needed, it will not work and they will ask you to buy another encryption dsc
In accordance to the guidelines of IT-Act and the X.509 Certificate Policy for India PKI published by Controller of Certifying Authorities, SSL certificates for fully qualified domain names (FQDN). The SSL certificate carries Domain Control Validation as well as Organization Validation in the certificate.
Foreign Trade and Digital Signature Certificates
Export and Import Organizations (EXIM organizations) can apply for licenses online which means that they can also file accompanying documents electronically on the DGFT website. Since a Digital Signature Certificate ensures authenticity of the document, DGFT has mandated use of Digital Signature Certificates with all electronic documents uploaded on the DGFT site. This means that every EXIM Organisation needs to necessarily have a Digital Signature Certificate for transactions related to the DGFT website. On validating the identity of the sender, authenticity of the documents and validity of the DSC, DGFT then processes the documents for licence issuance. In addition to convenience, online submission of applications on the DGFT website also mean a 50% reduction in licence fee for EXIM Organisations.