Simple workflow (with digital signature)

Overview

For the sample workflow, a PDF document will be sent to SigningHub for manual signing with a digital signature.

The API will be used to send the document to SigningHub and configure the workflow. The Signer will then sign the document by logging into SigningHub and manually signing the document with a digital signature.

A digital signature is a subset of electronic signatures that is protected with a digital certificate that ties the signer’s identity to a digital identity.

For a discussion on the difference between electronic signatures and digital signatures see the LAWtrust article.

Sample code

Download the Postman sample code.

Download the accompanying sample code documentation.

Prerequisites

In order for the Signer to sign the document with a digital certificate the user must pass through the LAWtrust enrolment process and be issued with a SigningHub account.

As part of the SigningHub account creation process, a digital certificate will be issued to the Signer.

The sample code in this example can be downloaded here.

Use Case

Digital Signatures issued by LAWtrust are considered to carry high trust.

LAWtrust supports two types of public trust digital signatures:

  • Standard Digital signatures;

  • Advanced Electronic signatures;

LAWtrust’s public trusted certificates is on the Adobe Approved Trust List (AATL). Documents signed by LAWtrust’s SigningHub solution can automatically be recognised by Adobe Reader.

To find out more about the different types of signatures and which one is right for your organisation, please contact LAWtrust for more information: info@lawtrust.co.za.

Process flow

Digital signing process flow.

At a high level, the sample code will perform the following steps:

  1. Prepare the workflow.

  2. Share the document.

  3. SigningHub sends email notification to Signer.

  4. Signers logs into SigningHub and signs the document.

  5. Third-party application checks the document status.

  6. Third-party downloads signed document.

  7. Third-party downloads the Workflow Evidence report.

  8. Deletes the document.

Requests

Digital signing requests.The following requests must be called to share a document with one Signer. The digital signing process will be completely automated.

Step 1 – Authenticate

Overview

Authenticate to SigningHub.

 

Online Documentation

https://manuals.ascertia.com/SigningHub-apiguide/default.aspx#pageid=1010.

 

Description

Authenticate to SigningHub, to start transacting with SigningHub.

The required parameters will be supplied by LAWtrust.

Contact the LAWtrust Sales department for access.

 

Parameters

The scope parameter tells the system who the Document Owner is. Use the email address of the Document Owner to identify the owner.

If this parameter is not set, the integration account used to authenticate to SigningHub will be considered to be the Document Owner.

 

Take note of the access_token returned by the server. The access_token will be needed in subsequent requests.

 

 

Step 2 – Add Package

Overview

Create a package to upload documents to.

 

Online Documentation

https://manuals.ascertia.com/SigningHub-apiguide/default.aspx#pageid=1020.

 

Description

The first step to creating a workflow on SigningHub is to create a package. This step tells the system what the name of the pack is that you want to create.

 

A package can contain one or more documents.

 

Parameters

The access_token is obtained during Step 1 - Authenticate.

 

Take note of the package_id returned by the server. The package_id will be needed in the subsequent requests.

 

 

Step 3 – Upload document

Overview

Upload a document to the package created in the previous step.

 

Online Documentation

https://manuals.ascertia.com/SigningHub-apiguide/default.aspx#pageid=1022.

 

Description

Upload the document that must be digitally signed to the system.

 

Parameters

The access_token is obtained during Step 1 - Authenticate.

 

The document_id returned by the server will be needed in requests pertaining to the uploaded document.

 

 

Step 4 – Add Signer 1 to the workflow

Overview

Add a signer to the workflow.

 

Online Documentation

https://manuals.ascertia.com/SigningHub-apiguide/default.aspx#pageid=1047.

 

Description

Add the name and email address of the person that must sign the document.

 

Parameters

The access_token is obtained during Step 1 - Authenticate.

 

The package_id is obtained during Step 2 – Create Package.

 

Signing_order specifies the Signer’s order to sign. The order number will be required in the following steps. For the first signer, set the value to 1.

 

Set the field email_notification to true. If the parameter value is true, SigningHub will send an email with a link to the document to the Signer. If the signer clicks on the document, the document will be opened in SigningHub and displayed to the user.

 

Unless specified, the user will not be prompted to enter a password or an OTP to view the document.

 

See the sample code Password protect access to a document or OTP protect access to a document for an example on how to protect access to a document.

 

 

Step 5 – Insert signature block 1

Overview

Draw a signature block for signer 1 on the document.

 

Online Documentation

https://manuals.ascertia.com/SigningHub-apiguide/default.aspx#pageid=1182.

 

Description

Add the name and email address of the first person that must sign the document.

 

Parameters

This request will draw a signature block on the document where the first signer’s signature must be placed.

 

This request will look for the text specified in the field search_text in the document and place the signature block on the document.

 

The field placement can be used to position the signature block relative to the search_text.

The size of the signature block can be controlled with the dimension field.

 

Order corresponds to the Signer’s order in which he / she must sign. Set the value to 1.

 

Field_type must be set to "DIGITAL_SIGNATURE".

 

 

Step 6 – Share document

Overview

Share document.

 

Online Documentation

https://manuals.ascertia.com/SigningHub-apiguide/default.aspx#pageid=1025.

 

Description

This request notifies SigningHub that the workflow configuration is complete and the signing workflow can start.

 

Parameters

N/A

 

 

Step 6.1 – Signer signs the document

Overview

The signer logs into SigningHub and manually signs the document.

 

This is a manual step performed by the user and as such there is no requests to call.

 

To programmatically sign a document, see the sample: One Signer workflow.

 

Online Documentation

https://manuals.ascertia.com/SigningHubv7/default.aspx#pageid=1156.

 

Description

The Signer manually signs the document.

 

Parameters

N/A

 

 

Step 7 – Get document status (Optional)

Overview

Set the workflow status.

 

Online Documentation

https://manuals.ascertia.com/SigningHub-apiguide/default.aspx#pageid=1044.

 

Description

The document status request retrieves the document’s current status.

 

Developers can use this request to periodically retrieve a document’s status.

 

The document status will be ‘Pending’ until all the Signers have digitally signed the document. After calling the document’s status will be ‘Completed’.

 

Parameters

N/A

 

 

Step 8 – Download document

Overview

Download the digitally signed document.

 

Online Documentation

https://manuals.ascertia.com/SigningHub-apiguide/default.aspx#pageid=1040.

 

Description

The digitally signed document is downloaded as a base64 string.

 

To download the signed document in a binary format, see this API request.

 

Parameters

Provide the package_id of the signed document to download.

 

 

Step 9 – Download Workflow Evidence report (Optional)

Overview

Download the forensic Workflow Evidence Report document.

 

Online Documentation

https://manuals.ascertia.com/SigningHub-apiguide/default.aspx#pageid=1045.

 

Description

A forensic report (Workflow completion report) can be downloaded optionally.

 

The forensic report contains an audit trail of all the actions that happened during the signing workflow.

 

The forensic report has been digitally signed to proof that the audit trail has not been tampered should a dispute arise later on.

 

Parameters

Provide the package_id of the forensic report to download.

 

 

Step 10 – Delete document

Overview

Delete the specified document (and containing package).

 

Online Documentation

https://manuals.ascertia.com/SigningHub-apiguide/default.aspx#pageid=1038.

 

Description

Finally, the signed document is deleted of SigningHub to free space on the SigningHub Enterprise.

 

Parameters

Provide the package_id of the signed document to delete.