feat(cheqd): Add Token StatusList Service #2325
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Signed-off-by: DaevMithran <daevmithran1999@gmail.com>
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| import { TokenStatusList } from './types/tokenStatusList' | ||
| import { CheqdApi } from '../CheqdApi' | ||
| import { parseCheqdDid } from '../anoncreds/utils/identifiers' | ||
| import base64url from 'base64url' |
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We have base64url support in the TypedArrayEncoder in the core package
| const jwt = resource.resource?.data.toString() | ||
| const payload = JSON.parse(Buffer.from(jwt!.split('.')[1], 'base64').toString()) as StatusListPayload |
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WE have tools like the Jwt.fromSerializedJwt to parse JWTs.
Also should we not verify it first?
| const payload: StatusListPayload = { | ||
| iss: did, | ||
| iat: Math.floor(Date.now() / 1000), | ||
| status_list: { | ||
| encoding: 'bitstring', | ||
| bits: encodeBitmap(bitmap), | ||
| }, | ||
| } | ||
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| const jwt = await signer.signJWT(payload) | ||
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| const resource = { | ||
| collectionId: did.split(':')[3], | ||
| id: utils.uuid(), | ||
| name: name, | ||
| resourceType: 'StatusList', | ||
| data: jwt, | ||
| version: tag || utils.uuid(), | ||
| } satisfies CheqdCreateResourceOptions | ||
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| await api.createResource(did, resource) | ||
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| return { | ||
| jwt, | ||
| metadata: { | ||
| statusListId: resource.id, | ||
| issuedAt: payload.iat, | ||
| size: size, | ||
| }, | ||
| } |
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We have quite some utils also to create JWTs. See the Jwt service, also we should probably make a generic status list service that creates the status list (like we have an SD-JWT VC service) which works with a signer.method (see sd-jwt-vc service) which can be a cheqd did or a x509 cert for example.
Making a cheqd focused status list service will just result in duplication. So I don't think we can merge the PR like this, and it would first need to be refactored to a generic status list service.
Then i see two options for the cheqd integration:
- you call two methods
- we have a
agent.modules.tokenStatusList.createStatusList - we have a
agent.modules.cheqd.uploadStatusList
- we have a
- we create one wrapper method
agent.modules.cheqd.createStatustList- which call theagent.modules.tokenStatusList.createStatusListand then uploads it as a cheqd resource, but still using the generic implementation
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@TimoGlastra Is this the right way to create JWTs?
const jwsService = agentContext.dependencyManager.resolve(JwsService)
const jwt = await jwsService.createJwsCompact(agentContext, {
payload: jwtPayload,
keyId: issuer.publicJwk.keyId,
protectedHeaderOptions: {
alg: issuer.alg,
typ: "statuslist+jwt"
}
})
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@TimoGlastra to publish status lists in different registries. How about following the pattern similar to registrar
agent.modules.tokenStatusList.registerRegistry([new CheqdStatusListRegistry(), new HttpStatusListRegistry]); etc.
and the functions within TokenStatusListService call registry.publish(), registry.retreive() etc
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| import { AgentContext, CredoError, getKeyFromVerificationMethod, Buffer, utils } from '@credo-ts/core' | |||
| import { StatusListPayload, StatusListToken } from './types' | |||
| import { createEmptyBitmap, decodeBitmap, encodeBitmap, isBitSet, setBit } from './utils/bitmap' | |||
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SD-JWT VC library already has utils to create status lists.
const statusListValues = new Array(body.size).fill(0)
const statusList = new StatusList(statusListValues, 1)
Or updating an existing one:
import { getListFromStatusListJWT } from '@sd-jwt/jwt-status-list'
const statusList = getListFromStatusListJWT(currentStatusListJwt)
const parsedStatusListJwt = Jwt.fromSerializedJwt(currentStatusListJwt)
// Set the revoked indices to 1
for (const revokedIndex of body.revokedIndices) {
statusList.setStatus(revokedIndex, 1)
}
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Closing and implementing new approach suggested in #2326 |
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