How do I sign with CoSign Central?
View the flash demos below to learn how CoSign digital signatures can be used to digitally sign various applications.
View other applications
Does CoSign Central integrate with user directory systems?
CoSign integrates with leading user management systems, including Microsoft Active Directory and a variety of LDAP (Lightweight Directory Access Protocol) based directories. This integration ensures no overhead in managing the digital-signature system and signature credentials (i.e., the private keys that are needed in a PKI environment), solving one of the main problems of legacy digital-signature systems. System managers, network managers, and end-users can continue to use the IT infrastructure in the same manner as before CoSign was installed.
How do I validate signatures created with CoSign Central?
To validate signatures created in Adobe:
When you receive a signed document, you may want to validate its signature(s) to verify the signer and the signed content. Depending on how you have configured your application, validation may occur automatically. Signature validity is determined by checking the authenticity of the signature’s digital ID certificate status and document integrity:
To validate signatures in Microsoft Office:
- Authenticity verification confirms that the signer’s certificate or its parent certificates exist in the validator’s list of trusted identities. It also confirms whether the signing certificate is valid based on the user’s Acrobat or Reader configuration.
- Document integrity verification confirms whether the signed content changed after it was signed. If content changes, document integrity verification indicates whether the content changed in a manner permitted by the signer.
Follow these instructions to view certificate data associated with a digital signature to verify trustworthiness:
- Open the Word document, Excel spreadsheet or PowerPoint presentation that has a digital signature.
- Double click the signature line
Note: If the signature line is not available, click the red Signatures button. The Signatures pane appears. On the signature name, click the down-arrow. Select Signature Details.The following image is an example of the Signatures button:
- The Signature Details dialog appears.
- For more certificate information, click View.
- The Certificate dialog appears.
- At the General tab, you can identify certificate information:
Issued to To whom this certificate was issued
Issued by Which organization issued the certificate
Valid from / to Duration of certificate validity
- At the Details tab, you can see such data as:
- Serial number
- Public key
- At the Certification Path Tab, you can identify the certificate root and certificate status.
In the user account, a trustworthy signature is valid on the computer that states it as valid. If the signature were opened on another computer or another account, it may appear as invalid because that account may not trust the certificate issuer. Also, for a signature to be valid the cryptographic integrity of the signature must be intact. This means that the signed content was not tampered with, and the signing certificate has not expired or been revoked.
View the Digital Signatures dialog:
- Open the file that contains the digital signature that you want to view.
- Click the File tab. The Microsoft Office Backstage view appears.
- Click the Info tab, then click View Signatures. The Signatures pane appears.
- In the list, on a signature name, click the down-arrow. Select Signature Details.
- The Signature Details dialog appears.
Why won’t my signature validate when I send to another computer?
Third-party recipients must download a root certificate in order to perform validation of your signed documents such as Microsoft Office (Word, Excel®) or PDF documents. After depositing your root certificate with ARX, you can send the relevant URL to your clients for downloading. This one-time action ensures that from now on every signed document you send them can be automatically validated.
Please contact email@example.com
Who can I contact for support when using CoSign Central?