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Add new contexts for VC Playground VCDM2.0 credentials (#44)
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Co-authored-by: Joey Silberman <jfsil@Joeys-MacBook-Pro.local>
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@Joey-Silberman
Joey-Silberman and Joey Silberman authored Nov 13, 2024
1 parent 64ab8cf commit 2f23aaa
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Showing 3 changed files with 431 additions and 114 deletions.
252 changes: 138 additions & 114 deletions example/src/main/java/com/spruceid/mobilesdkexample/wallet/HandleOID4VCIView.kt
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Original file line number Diff line number Diff line change
Expand Up @@ -34,47 +34,51 @@ import io.ktor.util.toMap

@Composable
fun HandleOID4VCIView(
navController: NavHostController,
url: String,
credentialPacksViewModel: CredentialPacksViewModel
navController: NavHostController,
url: String,
credentialPacksViewModel: CredentialPacksViewModel
) {
var loading by remember {
mutableStateOf(false)
}
var err by remember {
mutableStateOf<String?>(null)
}
var credential by remember {
mutableStateOf<String?>(null)
}
var loading by remember { mutableStateOf(false) }
var err by remember { mutableStateOf<String?>(null) }
var credential by remember { mutableStateOf<String?>(null) }
val ctx = LocalContext.current

LaunchedEffect(Unit) {
loading = true
val client = HttpClient(CIO)
val oid4vciSession = Oid4vci.newWithAsyncClient(client = object : AsyncHttpClient {
override suspend fun httpClient(request: HttpRequest): HttpResponse {
val res = client.request(request.url) {
method = HttpMethod(request.method)
for ((k, v) in request.headers) {
headers[k] = v
}
setBody(request.body)
}

return HttpResponse(
statusCode = res.status.value.toUShort(),
headers = res.headers.toMap().mapValues { it.value.joinToString() },
body = res.readBytes()
val oid4vciSession =
Oid4vci.newWithAsyncClient(
client =
object : AsyncHttpClient {
override suspend fun httpClient(
request: HttpRequest
): HttpResponse {
val res =
client.request(request.url) {
method = HttpMethod(request.method)
for ((k, v) in request.headers) {
headers[k] = v
}
setBody(request.body)
}

return HttpResponse(
statusCode = res.status.value.toUShort(),
headers =
res.headers.toMap().mapValues {
it.value.joinToString()
},
body = res.readBytes()
)
}
}
)
}
})

try {
oid4vciSession.initiateWithOffer(
credentialOffer = url,
clientId = "skit-demo-wallet",
redirectUrl = "https://spruceid.com"
credentialOffer = url,
clientId = "skit-demo-wallet",
redirectUrl = "https://spruceid.com"
)

val nonce = oid4vciSession.exchangeToken()
Expand All @@ -85,47 +89,49 @@ fun HandleOID4VCIView(
keyManager.generateSigningKey(id = "reference-app/default-signing")
val jwk = keyManager.getJwk(id = "reference-app/default-signing")

val signingInput = jwk?.let {
generatePopPrepare(
audience = metadata.issuer(),
nonce = nonce,
didMethod = DidMethod.JWK,
publicJwk = jwk,
durationInSecs = null
)
}
val signingInput =
jwk?.let {
generatePopPrepare(
audience = metadata.issuer(),
nonce = nonce,
didMethod = DidMethod.JWK,
publicJwk = jwk,
durationInSecs = null
)
}

val signature = signingInput?.let {
keyManager.signPayload(
id = "reference-app/default-signing",
payload = signingInput
)
}
val signature =
signingInput?.let {
keyManager.signPayload(
id = "reference-app/default-signing",
payload = signingInput
)
}

val pop = signingInput?.let {
signature?.let {
generatePopComplete(
signingInput = signingInput,
signature = Base64.encodeToString(
signature,
Base64.URL_SAFE
or Base64.NO_PADDING
or Base64.NO_WRAP
).toByteArray()
)
}
}
val pop =
signingInput?.let {
signature?.let {
generatePopComplete(
signingInput = signingInput,
signature =
Base64.encodeToString(
signature,
Base64.URL_SAFE or
Base64.NO_PADDING or
Base64.NO_WRAP
)
.toByteArray()
)
}
}

oid4vciSession.setContextMap(getVCPlaygroundOID4VCIContext(ctx = ctx))

val credentials = pop?.let {
oid4vciSession.exchangeCredential(proofsOfPossession = listOf(pop))
}
val credentials =
pop?.let { oid4vciSession.exchangeCredential(proofsOfPossession = listOf(pop)) }

credentials?.forEach { cred ->
cred.payload.toString(Charsets.UTF_8).let {
credential = it
}
cred.payload.toString(Charsets.UTF_8).let { credential = it }
}
} catch (e: Exception) {
err = e.localizedMessage
Expand All @@ -138,82 +144,100 @@ fun HandleOID4VCIView(
LoadingView(loadingText = "Loading...")
} else if (err != null) {
ErrorView(
errorTitle = "Error Adding Credential",
errorDetails = err!!,
onClose = {
navController.navigate(Screen.HomeScreen.route) {
popUpTo(0)
}
}
errorTitle = "Error Adding Credential",
errorDetails = err!!,
onClose = { navController.navigate(Screen.HomeScreen.route) { popUpTo(0) } }
)
} else if (credential != null) {
AddToWalletView(
navController = navController,
rawCredential = credential!!,
credentialPacksViewModel = credentialPacksViewModel
navController = navController,
rawCredential = credential!!,
credentialPacksViewModel = credentialPacksViewModel
)
}
}


fun getVCPlaygroundOID4VCIContext(ctx: Context): Map<String, String> {
val context = mutableMapOf<String, String>()

context["https://contexts.vcplayground.org/examples/alumni/v1.json"] =
ctx.resources.openRawResource(R.raw.contexts_vcplayground_org_examples_alumni_v1)
.bufferedReader()
.readLines()
.joinToString("")
ctx.resources
.openRawResource(R.raw.contexts_vcplayground_org_examples_alumni_v1)
.bufferedReader()
.readLines()
.joinToString("")

context["https://w3id.org/first-responder/v1"] =
ctx.resources.openRawResource(R.raw.w3id_org_first_responder_v1)
.bufferedReader()
.readLines()
.joinToString("")
ctx.resources
.openRawResource(R.raw.w3id_org_first_responder_v1)
.bufferedReader()
.readLines()
.joinToString("")

context["https://w3id.org/vdl/aamva/v1"] =
ctx.resources.openRawResource(R.raw.w3id_org_vdl_aamva_v1)
.bufferedReader()
.readLines()
.joinToString("")
ctx.resources
.openRawResource(R.raw.w3id_org_vdl_aamva_v1)
.bufferedReader()
.readLines()
.joinToString("")

context["https://w3id.org/citizenship/v3"] =
ctx.resources.openRawResource(R.raw.w3id_org_citizenship_v3)
.bufferedReader()
.readLines()
.joinToString("")
ctx.resources
.openRawResource(R.raw.w3id_org_citizenship_v3)
.bufferedReader()
.readLines()
.joinToString("")

context["https://contexts.vcplayground.org/examples/movie-ticket/v1.json"] =
ctx.resources.openRawResource(R.raw.contexts_vcplayground_org_examples_movie_ticket_v1)
.bufferedReader()
.readLines()
.joinToString("")
ctx.resources
.openRawResource(R.raw.contexts_vcplayground_org_examples_movie_ticket_v1)
.bufferedReader()
.readLines()
.joinToString("")

context["https://purl.imsglobal.org/spec/ob/v3p0/context-3.0.2.json"] =
ctx.resources.openRawResource(R.raw.purl_imsglobal_org_spec_ob_v3p0_context_3_0_2)
.bufferedReader()
.readLines()
.joinToString("")
ctx.resources
.openRawResource(R.raw.purl_imsglobal_org_spec_ob_v3p0_context_3_0_2)
.bufferedReader()
.readLines()
.joinToString("")

context["https://contexts.vcplayground.org/examples/food-safety-certification/v1.json"] =
ctx.resources.openRawResource(R.raw.contexts_vcplayground_org_examples_food_safety_certification_v1)
.bufferedReader()
.readLines()
.joinToString("")
ctx.resources
.openRawResource(
R.raw.contexts_vcplayground_org_examples_food_safety_certification_v1
)
.bufferedReader()
.readLines()
.joinToString("")

context["https://contexts.vcplayground.org/examples/gs1-8110-coupon/v2.json"] =
ctx.resources.openRawResource(R.raw.contexts_vcplayground_org_examples_gs1_8110_coupon_v2)
.bufferedReader()
.readLines()
.joinToString("")
ctx.resources
.openRawResource(R.raw.contexts_vcplayground_org_examples_gs1_8110_coupon_v2)
.bufferedReader()
.readLines()
.joinToString("")

context["https://contexts.vcplayground.org/examples/customer-loyalty/v1.json"] =
ctx.resources.openRawResource(R.raw.contexts_vcplayground_org_examples_customer_loyalty_v1)
.bufferedReader()
.readLines()
.joinToString("")
ctx.resources
.openRawResource(R.raw.contexts_vcplayground_org_examples_customer_loyalty_v1)
.bufferedReader()
.readLines()
.joinToString("")

context["https://w3id.org/citizenship/v4rc1"] =
ctx.resources
.openRawResource(R.raw.w3id_org_citizenship_v4rc1)
.bufferedReader()
.readLines()
.joinToString("")

context["https://w3id.org/vc/render-method/v2rc1"] =
ctx.resources
.openRawResource(R.raw.w3id_org_vc_render_method_v2rc1)
.bufferedReader()
.readLines()
.joinToString("")

return context
}


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