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Smart-ID E-Signing

Smart-ID is available in Estonia, Latvia and Lithuania using the Smart-ID app and it is available as a signing method in E-Signing utilizing the authentication-based signing feature.

Enable Smart-ID in your services

Smart-ID is available in E-Signing through the authentication-based signing function. The authentication is performed using the E-Ident service, and the E-Signing service generates the signature and adds the signature to the document. As a customer, you only need to integrate towards E-Signing, but your customer configuration will be updated with an E-Ident setup as well.

To get started with authentication-based signing with Smart-ID, please contact support and they will help you enable the service.

More information about Smart-ID:

Smart-ID specific implementation

To create a sign order with authentication-based signing, please have a look at the authentication-based signing page. 

The Smart-ID specific values are listed in the table below:

​Element/parameter

​Description

​Value

​AuthenticationID

​This element can be used to indicate that Smart-ID is one of the eID's the signer can sign with.

​smart_id

​IncludeSSN

​The SSN is included in the SDO file if the IncludeSSN element is defined.
Note: If the SignerID element has been defined, the IncludeSSN element is mandatory and must be set to true.
To find the SSN of a signer, read here. 

Optional.
Valid value: [true]

​SignerID

The SignerID element can specify which user that shall sign the document. The SignerID also works as a presetID, and the first page in the identification flow will be skipped. 

Example value:

etsi/PNOEE-48010010101 where 

  • etsi/ shall always be used as prefix

  • PNO - indicates that this is the personal number

  • EE or LV or LT - indicates the person's country

  • 480..01 - indicates the person's social security number

​IDType: PID

IDValue: The Smart-ID user identifier/semantic identifier.  

​forcepkivendor

The forcepkivendor parameter can be used to point the user directly to this eID. Read more about forcepkivendor.

​abs:smart_id

User experience

Step 1 - document signing (with pop-up and standalone UI)

Smart-ID Document Signing

image-20250509-122131.png

Step 2 and further

See the identification steps for Smart-ID

If needed, the Smart-ID logo can be downloaded from https://www.smart-id.com/e-service-providers/smart-id-branding/ .

Document types and sizes

The following document formats are supported using Smart-ID:

  • PDF​

  • Tex​t

​The size limit of a document is set to 10 MB base64 encoded document. An encoded document adds approximately 30 % extra to a non-encoded document.​​