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publish genesis state #133

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merged 5 commits into from
Sep 26, 2023
Merged

publish genesis state #133

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2660c56
publish genesis state
ilya-korotya Sep 12, 2023
326f22c
fix comments
ilya-korotya Sep 13, 2023
028425e
fix comments
ilya-korotya Sep 20, 2023
21ee577
call publishStateToRHS instead of pushHashesToRHS
ilya-korotya Sep 21, 2023
8b8797c
fixs
ilya-korotya Sep 26, 2023
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43 changes: 33 additions & 10 deletions src/credentials/credential-wallet.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -66,13 +66,15 @@ export interface CredentialRequest {
* id: string;
* nonce?: number;
* type: CredentialStatusType;
* issuerState?: string;
* }}
* @memberof CredentialRequest
*/
revocationOpts: {
id: string;
nonce?: number;
type: CredentialStatusType;
issuerState?: string;
};
}

Expand Down Expand Up @@ -342,19 +344,40 @@ export class CredentialWallet implements ICredentialWallet {
type: VerifiableConstants.JSON_SCHEMA_VALIDATOR
};

const id =
request.revocationOpts.type === CredentialStatusType.SparseMerkleTreeProof
? `${request.revocationOpts.id.replace(/\/$/, '')}/${request.revocationOpts.nonce}`
: request.revocationOpts.id;

cr.credentialStatus = {
id,
revocationNonce: request.revocationOpts.nonce,
type: request.revocationOpts.type
};
cr.credentialStatus = this.buildCredentialStatus(request);

return cr;
};

/**
* Builds credential status
* @param {CredentialRequest} request
* @returns `CredentialStatus`
*/
private buildCredentialStatus(request: CredentialRequest): CredentialStatus {
const credentialStatus: CredentialStatus = {
id: request.revocationOpts.id,
type: request.revocationOpts.type,
revocationNonce: request.revocationOpts.nonce
};

switch (request.revocationOpts.type) {
case (CredentialStatusType.SparseMerkleTreeProof,
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better to write

case CredentialStatusType.SparseMerkleTreeProof:
case CredentialStatusType.Iden3commRevocationStatusV1:

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Is already fixed

CredentialStatusType.Iden3commRevocationStatusV1):
credentialStatus.id = `${request.revocationOpts.id.replace(/\/$/, '')}/${
request.revocationOpts.nonce
}`;
break;
case CredentialStatusType.Iden3ReverseSparseMerkleTreeProof:
credentialStatus.id = request.revocationOpts.issuerState
? `${request.revocationOpts.id}/node?state=${request.revocationOpts.issuerState}`
: `${request.revocationOpts.id}`;
break;
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I would expect default keyword which throws Error

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@ilya-korotya ilya-korotya Sep 13, 2023 •
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For SparseMerkleTreeProof, Iden3commRevocationStatusV1, Iden3ReverseSparseMerkleTreeProof types we have to modify the id field. All other types remain unchanged

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Please add default keyword to switch statement which will throw an Error in case for some reasons request.revocationOpts.type none of available cases

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why do we need to modify id for Iden3commRevocationStatusV1. This is not right! Agent URL must remain the same.

https://iden3-communication.io/status/overview/#iden3commrevocationstatusv10:~:text=Send%20the%20constructed%20revocation%20status%20request%20message%20in%20plain%20text%20format%20to%20the%20issuer%27s%20agent%20endpoint%2C%20which%20is%20specified%20in%20the%20id%20field.%20The%20communication%20will%20take%20place%20using%20the%20iden3comm%20protocol.

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How I understand this regexp cuts end '/'. We should cut the last '/' for the agent endpoint also to be sure that SDK will not create a URL like https/agent//

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@Kolezhniuk @vmidylli about the default case. I disagree that we should return an error if we have an unknown type.

  1. What if the user implements a custom revocation type?
  2. We have strict typing to protect against dummy users.
  3. SDK should be flexible. All validation should be on the user side. Because we cannot know all the use cases of this SDK

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@ilya-korotya ok, in case we don't need to throw an Error, I would expect default statement in any case where you need to use switch to make logic flow explicitly

default:
        return credentialStatus;

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/**
   * Builds credential status
   * @param {CredentialRequest} request
   * @returns `CredentialStatus`
   */
  private buildCredentialStatus(request: CredentialRequest): CredentialStatus {
    const credentialStatus: CredentialStatus = {
      id: request.revocationOpts.id,
      type: request.revocationOpts.type,
      revocationNonce: request.revocationOpts.nonce
    };

    switch (request.revocationOpts.type) {
      case CredentialStatusType.SparseMerkleTreeProof:
      case CredentialStatusType.Iden3commRevocationStatusV1:
        return {
          ...credentialStatus,
          id: `${request.revocationOpts.id.replace(/\/$/, '')}/${request.revocationOpts.nonce}`
        };
      case CredentialStatusType.Iden3ReverseSparseMerkleTreeProof:
        return {
          ...credentialStatus,
          id: request.revocationOpts.issuerState
            ? `${request.revocationOpts.id}/node?state=${request.revocationOpts.issuerState}`
            : `${request.revocationOpts.id}`
        };
      default:
        return credentialStatus;
    }
  }

}

return credentialStatus;
}

/**
* {@inheritDoc ICredentialWallet.findById}
*/
Expand Down
100 changes: 69 additions & 31 deletions src/credentials/status/reverse-sparse-merkle-tree.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -7,11 +7,12 @@ import {
NodeAux,
ZERO_HASH,
setBitBigEndian,
testBit
testBit,
newHashFromHex
} from '@iden3/js-merkletree';
import { IStateStorage } from '../../storage';
import { CredentialStatusResolver, CredentialStatusResolveOptions } from './resolver';
import { CredentialStatus, RevocationStatus } from '../../verifiable';
import { CredentialStatus, IssuerData, RevocationStatus } from '../../verifiable';
import { strMTHex } from '../../circuits';
import { VerifiableConstants, CredentialStatusType } from '../../verifiable/constants';

Expand Down Expand Up @@ -124,28 +125,12 @@ export class RHSResolver implements CredentialStatusResolver {
}

try {
return await this.getStatus(credentialStatus, credentialStatusResolveOptions.issuerDID);
return await this.getStatus(
credentialStatus,
credentialStatusResolveOptions.issuerDID,
credentialStatusResolveOptions.issuerData
);
} catch (e: unknown) {
const errMsg = (e as { reason: string })?.reason ?? (e as Error).message ?? (e as string);
if (
!!credentialStatusResolveOptions.issuerData &&
errMsg.includes(VerifiableConstants.ERRORS.IDENTITY_DOES_NOT_EXIST) &&
isIssuerGenesis(
credentialStatusResolveOptions.issuerDID.string(),
credentialStatusResolveOptions.issuerData.state.value
)
) {
return {
mtp: new Proof(),
issuer: {
state: credentialStatusResolveOptions.issuerData.state.value,
revocationTreeRoot: credentialStatusResolveOptions.issuerData.state.revocationTreeRoot,
rootOfRoots: credentialStatusResolveOptions.issuerData.state.rootOfRoots,
claimsTreeRoot: credentialStatusResolveOptions.issuerData.state.claimsTreeRoot
}
};
}

if (credentialStatus?.statusIssuer?.type === CredentialStatusType.SparseMerkleTreeProof) {
try {
return await (await fetch(credentialStatus.id)).json();
Expand All @@ -161,21 +146,64 @@ export class RHSResolver implements CredentialStatusResolver {
* Gets revocation status from rhs service.
* @param {CredentialStatus} credentialStatus
* @param {DID} issuerDID
* @param {IssuerData} issuerData
* @returns Promise<RevocationStatus>
*/
private async getStatus(
credentialStatus: CredentialStatus,
issuerDID: DID
issuerDID: DID,
issuerData?: IssuerData
): Promise<RevocationStatus> {
const id = DID.idFromDID(issuerDID);
const latestStateInfo = await this._state.getLatestStateById(id.bigInt());

let latestState: bigint;
try {
const latestStateInfo = await this._state.getLatestStateById(id.bigInt());
latestState = latestStateInfo?.state || BigInt(0);
} catch (e) {
const errMsg = (e as { reason: string })?.reason ?? (e as Error).message ?? (e as string);
if (errMsg.includes(VerifiableConstants.ERRORS.IDENTITY_DOES_NOT_EXIST)) {
const currentState = this.extractState(credentialStatus.id);
if (!currentState) {
return this.getRevocationStatusFromIssuerData(issuerDID, issuerData);
}
const currentStateBigInt = newHashFromHex(currentState).bigInt();
if (!isGenesisStateId(id.bigInt(), currentStateBigInt, id.type())) {
throw new Error(`state ${currentState} is not genesis`);
}
latestState = currentStateBigInt;
} else {
throw e;
}
}

const rhsHost = credentialStatus.id.split('/node')[0];
const hashedRevNonce = newHashFromBigInt(BigInt(credentialStatus.revocationNonce ?? 0));
const hashedIssuerRoot = newHashFromBigInt(BigInt(latestStateInfo?.state ?? 0));
return await this.getRevocationStatusFromRHS(
hashedRevNonce,
hashedIssuerRoot,
credentialStatus.id
);
const hashedIssuerRoot = newHashFromBigInt(latestState);
return await this.getRevocationStatusFromRHS(hashedRevNonce, hashedIssuerRoot, rhsHost);
}

/**
* Extract revocation status from issuer data.
* @param {DID} issuerDID
* @param {IssuerData} issuerData
*/
private getRevocationStatusFromIssuerData(
issuerDID: DID,
issuerData?: IssuerData
): RevocationStatus {
if (!!issuerData && isIssuerGenesis(issuerDID.string(), issuerData.state.value)) {
return {
mtp: new Proof(),
issuer: {
state: issuerData.state.value,
revocationTreeRoot: issuerData.state.revocationTreeRoot,
rootOfRoots: issuerData.state.rootOfRoots,
claimsTreeRoot: issuerData.state.claimsTreeRoot
}
};
}
throw new Error(`issuer data is empty`);
}

/**
Expand Down Expand Up @@ -280,6 +308,16 @@ export class RHSResolver implements CredentialStatusResolver {
}
return p;
}

/**
* Get state param from rhs url
* @param {string} id
* @returns string | null
*/
private extractState(id: string): string | null {
const u = new URL(id);
return u.searchParams.get('state');
}
}

/**
Expand Down
53 changes: 49 additions & 4 deletions src/identity/identity-wallet.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -34,8 +34,7 @@ import {
CredentialStatusType,
ProofQuery
} from '../verifiable';
import { CredentialRequest, ICredentialWallet } from '../credentials';
import { pushHashesToRHS, TreesModel } from '../credentials/rhs';
import { CredentialRequest, ICredentialWallet, pushHashesToRHS, TreesModel } from '../credentials';
import { TreeState } from '../circuits';
import { byteEncoder } from '../utils';
import { Options, getDocumentLoader } from '@iden3/js-jsonld-merklization';
Expand Down Expand Up @@ -223,6 +222,20 @@ export interface IIdentityWallet {
*/
publishStateToRHS(issuerDID: DID, rhsURL: string, revokedNonces?: number[]): Promise<void>;

/**
*
*
* @param {TreesModel} treeModel - trees model to publish
* @param {string} rhsURL - reverse hash service URL
* @param {number[]} [revokedNonces] - revoked nonces for the period from the last published
* @returns `Promise<void>`
*/
publishSpecificStateToRHS(
treeModel: TreesModel,
rhsURL: string,
revokedNonces?: number[]
): Promise<void>;

/**
* Extracts core claim from signature or merkle tree proof. If both proof persists core claim must be the same
*
Expand Down Expand Up @@ -370,7 +383,8 @@ export class IdentityWallet implements IIdentityWallet {
revocationOpts: {
nonce: revNonce,
id: opts.revocationOpts.id.replace(/\/$/, ''),
type: opts.revocationOpts.type
type: opts.revocationOpts.type,
issuerState: currentState.hex()
}
};

Expand Down Expand Up @@ -409,6 +423,26 @@ export class IdentityWallet implements IIdentityWallet {

credential.proof = [mtpProof];

if (opts.revocationOpts.type === CredentialStatusType.Iden3ReverseSparseMerkleTreeProof) {
const revocationTree = await this._storage.mt.getMerkleTreeByIdentifierAndType(
did.string(),
MerkleTreeType.Revocations
);

const rootOfRootsTree = await this._storage.mt.getMerkleTreeByIdentifierAndType(
did.string(),
MerkleTreeType.Roots
);

const trees: TreesModel = {
state: currentState,
claimsTree: claimsTree,
revocationTree: revocationTree,
rootsTree: rootOfRootsTree
};
await pushHashesToRHS(currentState, trees, opts.revocationOpts.id);
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can't we just call publishStateToRHS here?

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Yes. I did it

}

await this._storage.identity.saveIdentity({
did: did.string(),
state: currentState,
Expand Down Expand Up @@ -618,6 +652,9 @@ export class IdentityWallet implements IIdentityWallet {
const jsonSchema = schema as JSONSchema;
let credential: W3CCredential = new W3CCredential();

const issuerRoots = await this.getDIDTreeModel(issuerDID);
req.revocationOpts.issuerState = issuerRoots.state.hex();

req.revocationOpts.nonce =
typeof req.revocationOpts.nonce === 'number'
? req.revocationOpts.nonce
Expand Down Expand Up @@ -803,10 +840,18 @@ export class IdentityWallet implements IIdentityWallet {
return credentials;
}

/** {@inheritDoc IIdentityWallet.publishSpecificStateToRHS} */
async publishSpecificStateToRHS(
treeModel: TreesModel,
rhsURL: string,
revokedNonces?: number[]
): Promise<void> {
await pushHashesToRHS(treeModel.state, treeModel, rhsURL, revokedNonces);
}

/** {@inheritDoc IIdentityWallet.publishStateToRHS} */
async publishStateToRHS(issuerDID: DID, rhsURL: string, revokedNonces?: number[]): Promise<void> {
const treeState = await this.getDIDTreeModel(issuerDID);

await pushHashesToRHS(
treeState.state,
{
Expand Down
28 changes: 28 additions & 0 deletions tests/credentials/mock.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -83,3 +83,31 @@ export const cred4 = createTestCredential({
expirationDate: '2023-11-11',
issuanceDate: '2022-11-11'
});

export const cred5 = createTestCredential({
id: 'test4',
'@context': ['context4'],
credentialSchema: {
id: 'credentialSchemaId',
type: 'credentialSchemaType'
},
proof: ['some proof4'],
type: ['type4'],
credentialStatus: {
id: 'https://rhs-staging.polygonid.me',
type: 'Iden3ReverseSparseMerkleTreeProof',
nonce: 10
},
issuer: 'issuer4',
credentialSubject: {
countOfFines: 0,
country: {
name: 'Spain',
code: 'ES',
insured: true,
hasOwnPackage: 'false'
}
},
expirationDate: '2023-11-11',
issuanceDate: '2022-11-11'
});
1 change: 1 addition & 0 deletions tests/handlers/fetch.test.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -179,6 +179,7 @@ describe('fetch', () => {
};
packageMgr.pack = async (): Promise<Uint8Array> => byteEncoder.encode(mockedToken);
fetchHandler = new FetchHandler(packageMgr);
fetchMock.spy();
fetchMock.post(agentUrl, JSON.parse(mockedCredResponse));
});

Expand Down
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