JavaScriptKotlinSwift

Presentation Exchange

In this guide, we'll cover the process of presenting Verifiable Credentials (VCs) to a verifier. This process is known as a Presentation Exchange (PEX) and involves selecting credentials that satisfy a Presentation Definition, creating a presentation based on that definition, and submitting the presentation to a verifier. PEX is typically executed by the user's Wallet application, acting on behalf of the user.

note

Before presenting VCs in a PEX, it's important to note that the VCs would have already been created, signed in a JWT format, and stored in the user's Wallet application.

Presentation Definition

The entity requesting credentials, aka the verifier, will have defined the presentation requirements using a Presentation Definition. This definition specifies the criteria that the VCs need to meet.

Assume a lender has an existing Presentation Definition specifying that applicants must provide VCs to prove their legal name, date of birth, and employment status:

Presentation Definition

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We'll use the Presentation Definition above to present credentials that meet its requirements.

Import PresentationExchange

All methods needed to perform a PEX are in the PresentationExchange class. You can import this class from the @web5/credentials package:

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Kotlin

Swift

import { PresentationExchange, VerifiablePresentation } from '@web5/credentials';

Select Credentials

A user may possess multiple credentials. To preserve the user's privacy, when creating a Presentation, you'll want to present only the VCs that match the Presentation Definition requirements. This is done with the selectCredentials() method:

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Kotlin

Swift

Satisfy Presentation Definition

To ensure that the selected credentials collectively satisfy all of the Presentation Definition's requirements, call the satisfiesPresentationDefinition() method:

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Swift

This method will throw an error if all requirements of the Presentation Definition are not satisfied.

Create Presentation

Once you've confirmed that the VCs successfully satisfy the Presentation Definition, you can create a presentation using the createPresentationFromCredentials() method:

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Kotlin

Swift

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Swift

This method returns a PresentationResult which contains the presentation:

{
  "vpDataModel": {
    "@context": [
      "https://www.w3.org/2018/credentials/v1"
    ],
    "type": [
      "VerifiablePresentation"
    ],
    "id": "urn:uuid:7747d88c-17be-40e0-a10a-0481b330581e",
    "holder": "did:dht:99tgimyf665zdntupjf88yoi8q656g15j8z87r4kdg45578mwacy",
    "verifiableCredential": [
      [
        "eyJhbGciOiJFZERTQSIsInR5cCI6IkpXVCIsImtpZCI6ImRpZDprZXk6ejZNa2VyNDlDbnVnN2hzdkhEZ3Y0NHl2cGR2dE1oNHlMaURYeFM2N2huclVodHQyI3o2TWtlcjQ5Q251Zzdoc3ZIRGd2NDR5dnBkdnRNaDR5TGlEWHhTNjdobnJVaHR0MiJ9.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.Sazc8Ndhs-NKjxvtVMKeC9dxjEkI26fVsp2kFNWM-SYLtxMzKvl5ffeWd81ysHgPmBBSk2ar4dMqGgUsyM4gAQ",
        "eyJhbGciOiJFZERTQSIsInR5cCI6IkpXVCIsImtpZCI6ImRpZDprZXk6ejZNa2pwUzRHVUFoYmdCSmg2azJnZTZvWTQ0UUxyRXA3NXJadHNqYVRLb3JSRGR0I3o2TWtqcFM0R1VBaGJnQkpoNmsyZ2U2b1k0NFFMckVwNzVyWnRzamFUS29yUkRkdCJ9.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.mNCDv_JntH-wZpYONKNL58UbOWaYXCYJO_HPI_WVlSgwzo6dhYmV_9qtpFKd_exFb-aaEYPeSE43twWlrJeSBg"
      ]
    ],
    "presentationResult": {
      "presentation": {
        "@context": [
          "https://www.w3.org/2018/credentials/v1",
          "https://identity.foundation/presentation-exchange/submission/v1"
        ],
        "type": [
          "VerifiablePresentation",
          "PresentationSubmission"
        ],
        "presentation_submission": {
          "id": "WOiGWyQL7gdsfpvllAySZ",
          "definition_id": "presDefIdloanAppVerification123",
          "descriptor_map": [
            {
              "id": "employmentVerification",
              "format": "jwt_vc",
              "path": "$.verifiableCredential[0]"
            },
            {
              "id": "dobVerification",
              "format": "jwt_vc",
              "path": "$.verifiableCredential[1]"
            },
            {
              "id": "nameVerification",
              "format": "jwt_vc",
              "path": "$.verifiableCredential[1]"
            }
          ]
        },
        "verifiableCredential": [
          "eyJhbGciOiJFZERTQSIsInR5cCI6IkpXVCIsImtpZCI6ImRpZDprZXk6ejZNa2VyNDlDbnVnN2hzdkhEZ3Y0NHl2cGR2dE1oNHlMaURYeFM2N2huclVodHQyI3o2TWtlcjQ5Q251Zzdoc3ZIRGd2NDR5dnBkdnRNaDR5TGlEWHhTNjdobnJVaHR0MiJ9.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.Sazc8Ndhs-NKjxvtVMKeC9dxjEkI26fVsp2kFNWM-SYLtxMzKvl5ffeWd81ysHgPmBBSk2ar4dMqGgUsyM4gAQ",
          "eyJhbGciOiJFZERTQSIsInR5cCI6IkpXVCIsImtpZCI6ImRpZDprZXk6ejZNa2pwUzRHVUFoYmdCSmg2azJnZTZvWTQ0UUxyRXA3NXJadHNqYVRLb3JSRGR0I3o2TWtqcFM0R1VBaGJnQkpoNmsyZ2U2b1k0NFFMckVwNzVyWnRzamFUS29yUkRkdCJ9.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.mNCDv_JntH-wZpYONKNL58UbOWaYXCYJO_HPI_WVlSgwzo6dhYmV_9qtpFKd_exFb-aaEYPeSE43twWlrJeSBg"
        ]
      },
      "presentationSubmissionLocation": 1,
      "presentationSubmission": {
        "id": "WOiGWyQL7gdsfpvllAySZ",
        "definition_id": "presDefIdloanAppVerification123",
        "descriptor_map": [
          {
            "id": "employmentVerification",
            "format": "jwt_vc",
            "path": "$.verifiableCredential[0]"
          },
          {
            "id": "dobVerification",
            "format": "jwt_vc",
            "path": "$.verifiableCredential[1]"
          },
          {
            "id": "nameVerification",
            "format": "jwt_vc",
            "path": "$.verifiableCredential[1]"
          }
        ]
      }
    }
  }
}
      

Validate Presentation Submission

Before submitting the presentation to a lender, you can validate the Presentation via the validateSubmission() method:

JavaScript

Kotlin

Swift

note

The information regarding Checked objects is only applicable to the JavaScript SDK.

JavaScript

Kotlin

Swift

This method checks the presentation submission for any errors, returns an array of Checked objects representing the validation checks performed on the presentation submission:

[ Checked { tag: 'root', status: 'info', message: 'ok' } ]
      

Each Checked object contains:

• tag: the path, root of the submission that was checked
• status: the result of the check, which is info for successful checks or error for failed checks
• message: shows ok if successful, and if unsuccessful this is where you'll find error messages

Verifiable Presentation

Once the Presentation is error-free and has passed the validation checks, you can submit the Verifiable Presentation as a signed and encoded JWT to the lender for verification.

JavaScript

Kotlin

Swift