How Do I Upload My Signature on an Excel Sheet

This article explains digital signatures (also known as digital ID), what they tin be used for, and how you tin can use digital signatures in the post-obit Microsoft Office programs: Give-and-take, Excel, and PowerPoint.

In this commodity

• What is a digital signature?

• Signature lines in Discussion and Excel

• Create a signature line in Give-and-take or Excel

• Sign the signature line in Give-and-take or Excel

• Remove digital signatures from Discussion or Excel

• Invisible digital signatures in Discussion, Excel, or PowerPoint

• Add invisible digital signatures in Word, Excel, or PowerPoint

• Remove invisible digital signatures from Word, Excel, or PowerPoint

What is a digital signature?

A digital signature is an electronic, encrypted, stamp of authentication on digital data such every bit eastward-mail letters, macros, or electronic documents. A signature confirms that the data originated from the signer and has not been altered.

Signing certificate and certificate potency

Signing certificate     To create a digital signature, you have to have a signing certificate, which proves identity. When you send a digitally-signed macro or document, you lot also ship your certificate and public central. Certificates are issued by a certification authority, and similar a commuter's license, tin be revoked. A certificate is usually valid for a year, after which, the signer must renew, or get a new, a signing document to constitute identity.

Certificate authority (CA)     A certificate authority is an entity like to a notary public. It issues digital certificates, signs certificates to verify their validity and tracks which certificates have been revoked or have expired.

What does a digital signature guarantee?

• Authenticity     The signer is confirmed as the signer.

• Integrity     The content has not been changed or tampered with since it was digitally signed.

• Not-repudiation     Proves to all parties the origin of the signed content. Repudiation refers to the deed of a signer denying whatsoever association with the signed content.

• Notarization     Signatures in Word, Excel, or PowerPoint files, which are time stamped by a secure time-stamp server, nether sure circumstances, have the validity of a notarization.

To make these assurances, the content creator must digitally sign the content by using a signature that satisfies the post-obit criteria:

• The digital signature is valid.

• The certificate associated with the digital signature is electric current (not expired).

• The signing person or organization, known as the publisher, is trusted.

  Of import:Signed documents, which have a valid time stamp, are considered to have valid signatures, regardless of the age, or revocation status, of the signing certificate.

• The document associated with the digital signature is issued to the signing publisher by a reputable certificate authority (CA).

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Signature lines in Word and Excel

A signature line resembles a typical signature placeholder that might appear in a printed document. However, it works differently. When a signature line is inserted into an Office file, the author tin can specify information about the intended signer, and instructions for the signer. When an electronic copy of the file is sent to the intended signer, this person sees the signature line and a notification that their signature is requested. The signer can:

• Type a signature, or

• Select a picture of an inked signature, or

• Write a signature by using the inking feature of a bear on-screen PC

When the signer adds a visible representation of a signature to the document, a digital signature is added at the aforementioned time to authenticate the signer'southward identity.

Important:A digitally-signed certificate becomes read-just to prevent modifications.

Create a signature line in Word or Excel

1. In the document or worksheet, place your pointer where yous want to create a signature line.

2. On the Insert tab, in the Text group, click the Signature Line list, then click Microsoft Office Signature Line.

3. In the Signature Setup dialog box, blazon information that will appear beneath the signature line:
   

   • Suggested signer     The signer's total name.

   • Suggested signer'southward championship     The signer'south title, if any.

   • Suggested signer'south e-mail address     The signer's email address, if needed.

   • Instructions to the signer     Add instructions for the signer, such as "Before signing the document, verify that the content is right."

4. Select one or both of the post-obit check boxes:

   • Allow the signer to add comments in the Sign dialog box     Allow the signer to type a purpose for signing.

   • Show sign date in signature line     The date the document was signed volition appear with the signature.

Tip:To add together additional signature lines, repeat these steps.

Notation:If the certificate remains unsigned, the Signatures Message Bar appears. Click View Signatures to complete the signature process.

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Sign the signature line in Give-and-take or Excel

When you lot sign a signature line, y'all add a visible representation of your signature and a digital signature.

1. In the file, correct-click the signature line.

   Notation:If the file opens in Protected View, click Edit Anyway, if the file is from a reliable source.

2. From the carte, select Sign.

   • To add a printed version of your signature, type your proper name in the box side by side to the Ten.

   • To select an epitome of your written signature, click Select Paradigm. In the Select Signature Image dialog box, detect the location of your signature image file, select the file that y'all want, and so click Select.

     Notes:

     • For customers using Chinese- (Traditional or Simplified), Korean-, or Japanese-language versions, the Stamp Signature Line option appears.

     • In improver, you tin can sign a signature line by double-clicking the signature line. Type your name next to the 10. Or, in the Signature Pane, in the Requested Signatures section, click the arrow side by side to the signature. From the menu, select Sign.

   • To add together a handwritten signature (Tablet PC users only), sign your proper name in the box next to the X by using the inking characteristic.

   • Click Sign.

   • The Signatures button appears at the bottom of the document or worksheet.

The following image shows the Signatures button.

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Remove digital signatures from Word or Excel

1. Open the document or worksheet that contains the visible signature you want to remove.

2. Right-click the signature line.

3. Click Remove Signature.

4. Click Yes.

Note:In addition, yous tin remove a signature by clicking the arrow side by side to the signature in the Signature Pane. Click Remove Signature.

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Invisible digital signatures in Give-and-take, Excel, or PowerPoint

An invisible digital signature, such equally a visible digital signature line, assures the authenticity, integrity, and origin of a document. You can add invisible digital signatures to Word documents, Excel workbooks, and PowerPoint presentations.

Signed documents will accept the Signatures push at the bottom of the document. In improver, for signed documents, signature information appears in the Info section that you see after you click the File tab.

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Add invisible digital signatures in Word, Excel, or PowerPoint

To protect the authenticity of a certificate'due south content, you can add an invisible digital signature. Signed documents have the Signatures button at the bottom of the document.

1. Click the File tab.

2. Click Info.

3. Click Protect Document, Protect Workbook or Protect Presentation.

4. Click Add together a Digital Signature.

5. Read the Give-and-take, Excel, or PowerPoint message, and then click OK.

6. In the Sign dialog box, in the Purpose for signing this certificate box, blazon the purpose.

7. Click Sign.

After a file is digitally signed, the Signatures button appears, and the file becomes read-only to prevent modifications.

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Remove invisible digital signatures from Word, Excel, or PowerPoint

1. Open the document, worksheet, or presentation that contains the invisible signature you want to remove.

2. Click the File tab.

3. Click Info.

4. Click View Signatures.

5. The document, worksheet, or presentation view returns, and the Signatures pane appears.

6. Next to the signature name, click the pointer.

7. Click Remove Signature.

8. Click Yeah.

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Source: https://support.microsoft.com/en-us/topic/add-or-remove-a-digital-signature-in-office-files-70d26dc9-be10-46f1-8efa-719c8b3f1a2d

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