Signature Activation Data

The Signature Activation Data (SAD) is a set of data that is used to activate the signature. The signature activation data is used to authorize a signature, is linked to the document or the documents to be signed.

The content of the SAD is described as follows:

Property Name	Description
userId	Identifier of the user the credential will belong to. This identifier must be unique within the identity provider.
credentialId	Unique identifier of the credential.
signatureQualifier	Identifier qualifying the type of signature this credential is suitable for.
numSignatures	Maximum number of signatures that can be created with this credential with a single authorization request.
hashes	An array containing the Base64-encoded document hashes to be signed.
hashAlgorithmOid	The OID of the hash algorithm used to create the hashes.
clientData	Arbitrary data from the signature application.

Sample Signature Activation Data

The following is sample of the SAD data:

{
  "userID": "9714de4e-2dc1-4be3-9682-678f0aae4f1e",
  "credentialID": "f730t7fnbnd674dve3",
  "signatureQualifier": "eu_eidas_qes",
  "numSignatures": "3",
  "hashes": [
    "pZGm1Av0IEBKARczz7exkNYsZb8LzaMrV7J32a2fFG4=",
    "Njy1yEOux68lDklWf+4nBjiMpXLAyZHqqMOxFcM3Ojo="
  ],
  ,
  "hashAlgorithmOID": "2.16.840.1.101.3.4.2.1",
  "clientData": "My Custom Client Data"
}