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Secure Document Signing

Document Signing

Fluix allows for the electronic signing of contracts, agreements, NDAs, forms and other documents. Such paperless contract execution can save companies money on labor, printing, scanning, faxing, mailing and the storage of paper documents.

With Fluix, it is easy and intuitive to capture handwritten signatures on iPad, much like traditional signatures on paper, while still maintaining the same sense of security.

Digital Signature Process

Fluix’s digital signature process makes PDF-based e-signing secure and reliable for both the customer and the company. It solves crucial problems that can arise with the use of e-signatures in PDF documents:

  1. Discourages changes being made to the document after being signed.
  2. Prevents signatures being copied for use in another document.

Once a signature is captured, the document is sealed with a digital certificate. Any subsequent change to the document will result in the signature being invalidated. A document signed in Fluix can be validated to prove its authenticity by using the free Adobe Reader software.

Capturing eSignatures in Fluix

Fluix provides several ways to reach your customers and colleagues according to their signee role and available tools:

In person: The simplest scenario is when a signature is captured in the field, most often produced with the finger on iPad/iPhone screen. This is a modern and convenient way to seal the deal both visually and electronically. Locking documents with a digital certificate ensures security and helps to identify invalidated documents, when changes are made after signing.

Via workflow: Another method is to reassign a document to an existing Fluix user according to a pre-defined workflow. Signee might already have his own signatures stored on the device, and even apply company’s digital certificate to fully authorize decisions. Signing documents via workflow will help you save multiple signatures for repeated use, accelerate time to document completion and streamline approval processes.

Via email: Most recently added capability allows anyone with an email addresses and a web browser to officially sign documents. Fluix user fills in a document and submits it for signing to a person outside the Fluix system. Signee receives email notification, opens a secure link, types in the name in the signature field, and the document is automatically returned to the workflow.

Offering your customers, suppliers and contractors the capability to receive documents from you, fill in required information, and sign digitally provides your business with even further back-office efficiencies from a digital workflow, now extended to non-employees.

Digital Signature Technical Specifications

Fluix uses proven cryptographic technology to ensure a document’s validity and protects it from forgery or misuse. This technology enhances Fluix deployment with a Digital Identity (a pair of private and public 2048 bit key).

As a document is signed, Fluix generates a Document Digest by computing a SHA-1 hash of the PDF content. A Document Digest is a set of characters (letters and numbers) that corresponds to a given document. Altering anything in the document will cause an immediate and dramatic change in the Document Digest value.

To create the Digital Signature, Fluix uses a Digital Identity private key to RSA encrypt the Document Digest. In the final step, the Digital Signature and Digital Identity public key are put into the document.

Whoever receives the document can then use the embedded Digital Identity public key to decrypt the Digital Signature and retrieve the Document Digest corresponding to the original document. Then, the receiver can compare the Document Digest with the SHA-1 hash of the received PDF content. If these two digests match, it means that the document has not been changed after being signed and the content is valid. In case of any difference, the document will be marked as invalid.

In order to digitally sign documents in Fluix, you will need to have:

There are two ways a document can be signed with a Digital Certificate in Fluix:

  1. Using Fluix certificates. Fluix automatically generates and deploys unique certificates (RSA algorithm, 2048 bit). No iPad user interaction is required.
  2. Manually create Digital Signature Certificates. Adobe Acrobat Pro enables formal signer’s verification through powerful encryption and public key infrastructure support. This kind of certificates have to be deployed by manually copying files to the iPad/iPhone (Signature section).

Fluix Signatures Are Legal & Secure

Electronic signatures created through Fluix are legal and secure. Digital Signatures support allows both the company and the customer to check the authenticity of a document signed on the iPad with Fluix. The document is also sealed to ensure that it can’t be changed after it is signed.

All these Fluix security enhancements remove the worry of document validity, allowing you to focus on more important business activities.

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