hSign
PDF File Signing Software via Automated API

You need to digitally sign Contracts, Orders, or Quotations using a Digital Certificate but cannot use automated HSM signing, or you are required to sign via mobile apps that are complicated, inconvenient, and costly.

hSign by Hao Quang Viet provides an automated signing solution accessible via API, allowing you to upload and sign documents using Digital Certificates stored on USB Tokens issued by any Vietnamese certificate authority such as VNPT CA, FPT CA, FastCA, Viettel CA, and others.

Just 3 Simple Steps

  • Enter customer information
  • Business owner information is automatically filled using predefined variables
  • Compatible with all USB tokens and all digital certificate providers in Vietnam

  • Preview documents before signing
  • Email support & marketing email sending
  • Manage & upload files directly
  • Confirm the test signing slip and proceed with document signing

  • Digital signature successfully issued
  • View and download the signed PDF file