Create User Action Signature

POST /auth/action

Completes the user action signing process and provides a signing token that can be used to verify the user intended to perform the action.

The type of credentials used to sign the action is determined by the kind field in the nested objects (firstFactor and secondFactor). Supported credential kinds are:

• Fido2: User action is signed by a user's signing device using WebAuthn.

• Key: User action is signed by a user's, or token's, private key.

• PasswordProtectedKey: Login challenge is signed by the decrypted user's private key that was sent during Create User Action Signature Challenge step.

• Request headers required. See Request Headers for more information.

• Authentication required. See Authentication Headers for more information.

Required Permissions

The permissions apply to the application only.

Name	Conditions
Auth:Action:Sign	Always Required

Request body

challengeIdentifier *	String	temporary authentication token returned by the Create User Action Signature Challenge
firstFactor *	Object	first factor credential used to sign the user action
secondFactor	Object	Optional second factor credential used to authenticate a user

Fido2 Credential

kind *	String	will always be Fido2
credentialAssertion *	Object
credentialAssertion.credId *	String	base64url encoded id of the credential returned by the user's WebAuthn client
credentialAssertion.clientData *	String	base64url encoded client data object returned by the user's WebAuthn client
credentialAssertion.authenticatorData *	String	base64url encoded authenticator data object returned by the user's WebAuthn client
credentialAssertion.signature *	String	base64url encoded signature returned by the user's WebAuthn client
credentialAssertion.userHandle *	String	base64url encoded userHandle returned by the user's WebAuthn client

Example:

{
  "challengeIdentifier":"eyJ0e...fQNA",
  "firstFactor":{
    "kind":"Fido2",
    "credentialAssertion":{
      "credId":"c1QEdgnPLJargwzy3cbYKny4Q18u0hr97unXsF3DiE8",
      "clientData":"eyJ0eXBlIjoid2ViYXV0aG4uZ2V0IiwiY2hhbGxlbmdlIjoiTVdNME1tWTVZVFEwTURSaU56ZGhOVEZoTnpZNU9EUXdOV0k1WlRRNFkyUmhPRFppTkRrM1pUWXpPVEU1T0dZeU1EY3haakJqWXprNE1tUTVZelkxTUEiLCJvcmlnaW4iOiJodHRwczovL2FwcC5kZm5zLm5pbmphIiwiY3Jvc3NPcmlnaW4iOmZhbHNlfQ",
      "authenticatorData":"WT-zFZUBbJHfBkmhzTlPf49LTn7asLeTQKhm_riCvFgFAAAAAA",
      "signature":"MEUCIQDJ8G9J1NTjdoKx0yloYw45bpn6fJhcqCoUGiZuOU1IAQIgAtPt7S8FHFYW9OMHh3S5FVAxk-lhli-2lX22bBNSDog",
      "userHandle":"dXMtMmJhMGgtbHZwMnEtOHYxODYwcGNqMWJoNWlyaQ"
    }
  }
}

Key Credential and Password Protected Key Credential

kind *	String	Key or PasswordProtectedKey
credentialAssertion *	Object
credentialAssertion.credId *	String	base64url encoded id of the credential
credentialAssertion.clientData *	String	Client Data JSON object, stringified and base64url-encoded
credentialAssertion.signature *	String	base64url encoded signature generated by signing the clientData JSON string object

Example:

{
  "challengeIdentifier":"eyJ0e...fQNA",
  "firstFactor":{
    "kind":"Key", // can be "PasswordProtectedKey" as well
    "credentialAssertion":{
      "credId":"6Ca6tAOFTx2odyJBnCoRO-gPvfpfy0EOoOcEaxfxIOk",
      "clientData":"eyJ0eXBlIjoia2V5LmdldCIsImNoYWxsZW5nZSI6Ik1XTTBNbVk1WVRRME1EUmlOemRoTlRGaE56WTVPRFF3TldJNVpUUTRZMlJoT0RaaU5EazNaVFl6T1RFNU9HWXlNRGN4WmpCall6azRNbVE1WXpZMU1BIiwib3JpZ2luIjoiaHR0cHM6Ly9hcHAuZGZucy5uaW5qYSIsImNyb3NzT3JpZ2luIjpmYWxzZX0",
      "signature":"owt8WtpJT_6eEuw4UwdIX2HMMwENgk0SrI-RoCMPhx_9YMVpNKJGmJfHUusf_R1Mor9a_hinQVuXj4_XRdeJFSY2AySXSUk",
    }
  }
}

Responses

• See Common Errors for common errors.

• See User Action Signing Errors for user action signing specific errors.

200

Success - a token that will be passed in the X-DFNS-USERACTION header

{
  "userAction": "eyJ0eX...bzrQakA"
}