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feat(mdoc): proximity flow for Android functionality (#202)
Signed-off-by: Berend Sliedrecht <sliedrecht@berend.io>
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@@ -26,6 +26,7 @@ yarn-error.log* | |
| .env.development.local | ||
| .env.test.local | ||
| .env.production.local | ||
| .env | ||
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| # vercel | ||
| .vercel | ||
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1 @@ | ||
| export * from './mdocProximity' |
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| @@ -0,0 +1,95 @@ | ||
| import { mdocDataTransfer } from '@animo-id/expo-mdoc-data-transfer' | ||
| import { TypedArrayEncoder } from '@credo-ts/core' | ||
| import { getMdocContext } from '@credo-ts/core/build/modules/mdoc/MdocContext' | ||
| import type { EasyPIDAppAgent } from '@package/agent' | ||
| import { | ||
| COSEKey, | ||
| DeviceRequest, | ||
| DeviceResponse, | ||
| MDoc, | ||
| type MdocContext, | ||
| parseIssuerSigned, | ||
| } from '@protokoll/mdoc-client' | ||
| import { type Permission, PermissionsAndroid, Platform } from 'react-native' | ||
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| type ShareDeviceResponseOptions = { | ||
| sessionTranscript: Uint8Array | ||
| deviceRequest: Uint8Array | ||
| agent: EasyPIDAppAgent | ||
| } | ||
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| const PERMISSIONS = [ | ||
| 'android.permission.ACCESS_FINE_LOCATION', | ||
| 'android.permission.BLUETOOTH_CONNECT', | ||
| 'android.permission.BLUETOOTH_SCAN', | ||
| 'android.permission.BLUETOOTH_ADVERTISE', | ||
| 'android.permission.ACCESS_COARSE_LOCATION', | ||
| ] as const as Permission[] | ||
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| export const requestMdocPermissions = async () => { | ||
| if (Platform.OS !== 'android') return | ||
| await PermissionsAndroid.requestMultiple(PERMISSIONS) | ||
| } | ||
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| export const getMdocQrCode = async () => { | ||
| const mdt = mdocDataTransfer.instance() | ||
| const qrData = await mdt.startQrEngagement() | ||
| return qrData | ||
| } | ||
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| /** | ||
| * | ||
| * Wait for the device request | ||
| * | ||
| * Returns the device request and session transcript | ||
| * | ||
| */ | ||
| export const waitForDeviceRequest = async () => { | ||
| const mdt = mdocDataTransfer.instance() | ||
| return await mdt.waitForDeviceRequest() | ||
| } | ||
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| /** | ||
| * | ||
| * Naive way to share the device response based on the device request | ||
| * | ||
| * Optimalisations: | ||
| * | ||
| * 1. pre-filter the `agent.mdoc.getAll()` based on the `deviceRequest` | ||
| * 2. Allow the user to pick which specific mdoc is being used | ||
| * | ||
| */ | ||
| export const shareDeviceResponse = async (options: ShareDeviceResponseOptions) => { | ||
| const mdocs = await options.agent.mdoc.getAll() | ||
| const issuerSignedDocuments = mdocs.map((mdoc) => { | ||
| const docType = mdoc.getTag('DocType') as string | ||
| return parseIssuerSigned(TypedArrayEncoder.fromBase64(mdoc.base64Url), docType) | ||
| }) | ||
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| const mdoc = new MDoc(issuerSignedDocuments) | ||
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| const mdocContext = getMdocContext(options.agent.context) as unknown as { | ||
| cose: MdocContext['cose'] | ||
| crypto: MdocContext['crypto'] | ||
| } | ||
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| const mdt = mdocDataTransfer.instance() | ||
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| const mso = mdoc.documents[0].issuerSigned.issuerAuth.decodedPayload | ||
| const deviceKeyInfo = mso.deviceKeyInfo | ||
| if (!deviceKeyInfo?.deviceKey) { | ||
| throw new Error('Device key info is missing') | ||
| } | ||
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| const publicDeviceJwk = COSEKey.import(deviceKeyInfo.deviceKey).toJWK() | ||
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| const deviceRequest = DeviceRequest.parse(options.deviceRequest) | ||
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| const deviceResponse = await DeviceResponse.from(mdoc) | ||
| .usingSessionTranscriptBytes(new Uint8Array(options.sessionTranscript)) | ||
| .usingDeviceRequest(deviceRequest) | ||
| .authenticateWithSignature(publicDeviceJwk, 'ES256') | ||
| .sign(mdocContext) | ||
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| await mdt.sendDeviceResponse(deviceResponse.encode()) | ||
| } |
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@@ -68,6 +68,7 @@ const config = { | |
| }, | ||
| plugins: [ | ||
| [ | ||
| 'expo-router', | ||
| 'expo-font', | ||
| { | ||
| fonts: [ | ||
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| Original file line number | Diff line number | Diff line change |
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@@ -25,6 +25,7 @@ | |
| "../../node_modules/@expo-google-fonts/open-sans/OpenSans_700Bold.ttf" | ||
| ] | ||
| } | ||
| ] | ||
| ], | ||
| "expo-router" | ||
| ] | ||
| } | ||
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