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presentation.spec.ts
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presentation.spec.ts
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import { generateRandomFieldElement } from 'crypto-wasm-new';
import {
AccumulatorPublicKey,
AccumulatorSecretKey, areUint8ArraysEqual,
BoundCheckBppParams,
BoundCheckBppParamsUncompressed,
BoundCheckParamType,
BoundCheckProtocol,
BoundCheckSmcParams,
BoundCheckSmcParamsUncompressed,
BoundCheckSmcWithKVProverParamsUncompressed,
BoundCheckSmcWithKVSetup,
BoundCheckSmcWithKVVerifierParamsUncompressed,
CredentialSchema,
DefaultSchemaParsingOpts,
dockSaverEncryptionGens,
InequalityProtocol,
initializeWasm,
LegoProvingKeyUncompressed,
LegoVerifyingKeyUncompressed,
MEM_CHECK_KV_STR,
MEM_CHECK_STR,
META_SCHEMA_STR,
PositiveAccumulator,
Pseudonym,
PseudonymBases,
randomFieldElement,
SaverChunkedCommitmentKey,
SaverDecryptionKeyUncompressed,
SaverDecryptor,
SaverEncryptionKeyUncompressed,
SaverProvingKeyUncompressed,
SaverSecretKey,
SaverVerifyingKeyUncompressed,
SUBJECT_STR,
TYPE_STR,
VB_ACCUMULATOR_22,
VBMembershipWitness,
VerifiableEncryptionProtocol
} from '../../src';
import {
Credential,
CredentialBuilder,
isKvac,
isPS,
PresentationBuilder,
PublicKey,
Scheme,
SecretKey
} from '../scheme';
import {
checkResult,
getBoundCheckSnarkKeys,
readByteArrayFromFile,
stringToBytes
} from '../utils';
import {
checkCiphertext,
checkPresentationJson,
checkSchemaFromJson,
getDecodedBoundedPseudonym,
getExampleBuilder,
getExampleSchema,
getKeys,
setupPrefilledAccum,
verifyCred, writeSerializedObject
} from './utils';
import exp = require('node:constants');
// Setting it to false will make the test run the SNARK setups making tests quite slow
const loadSnarkSetupFromFiles = true;
describe.each([true, false])(
`${Scheme} Presentation creation and verification with withSchemaRef=%s`,
(withSchemaRef) => {
let sk1: SecretKey, pk1: PublicKey;
let sk2: SecretKey, pk2: PublicKey;
let sk3: SecretKey, pk3: PublicKey;
let sk4: SecretKey, pk4: PublicKey;
let credential1: Credential;
let credential2: Credential;
let credential3: Credential;
let credential4: Credential;
let credential5: Credential;
let credential6: Credential;
let credential7: Credential;
// generated by verifier:
const scope1 = stringToBytes('Service provider 1');
let accumulator3: PositiveAccumulator;
let accumulator3Sk: AccumulatorSecretKey;
let accumulator3Pk: AccumulatorPublicKey;
let accumulator3Witness: VBMembershipWitness;
let accumulator4: PositiveAccumulator;
let accumulator4Sk: AccumulatorSecretKey;
let accumulator4Pk: AccumulatorPublicKey;
let accumulator4Witness: VBMembershipWitness;
let boundCheckProvingKey: LegoProvingKeyUncompressed;
let boundCheckVerifyingKey: LegoVerifyingKeyUncompressed;
const chunkBitSize = 16;
let saverSk: SaverProvingKeyUncompressed;
let saverProvingKey: SaverProvingKeyUncompressed;
let saverVerifyingKey: SaverVerifyingKeyUncompressed;
let saverEk: SaverEncryptionKeyUncompressed;
let saverDk: SaverDecryptionKeyUncompressed;
let boundCheckBppParams: BoundCheckBppParamsUncompressed;
let boundCheckSmcParams: BoundCheckSmcParamsUncompressed;
let boundCheckSmcKVProverParams: BoundCheckSmcWithKVProverParamsUncompressed;
let boundCheckSmcKVVerifierParams: BoundCheckSmcWithKVVerifierParamsUncompressed;
const nonEmbeddedSchema = {
$id: 'https://example.com?hash=abc123ff',
[META_SCHEMA_STR]: 'http://json-schema.org/draft-07/schema#',
type: 'object'
};
function setupBoundCheckLego() {
if (boundCheckProvingKey === undefined) {
[boundCheckProvingKey, boundCheckVerifyingKey] = getBoundCheckSnarkKeys(loadSnarkSetupFromFiles);
}
}
function setupSaver() {
if (saverProvingKey === undefined) {
if (loadSnarkSetupFromFiles) {
saverSk = new SaverSecretKey(readByteArrayFromFile('snark-setups/saver-secret-key-16.bin'));
saverProvingKey = new SaverProvingKeyUncompressed(
readByteArrayFromFile('snark-setups/saver-proving-key-16-uncompressed.bin')
);
saverVerifyingKey = new SaverVerifyingKeyUncompressed(
readByteArrayFromFile('snark-setups/saver-verifying-key-16-uncompressed.bin')
);
saverEk = new SaverEncryptionKeyUncompressed(
readByteArrayFromFile('snark-setups/saver-encryption-key-16-uncompressed.bin')
);
saverDk = new SaverDecryptionKeyUncompressed(
readByteArrayFromFile('snark-setups/saver-decryption-key-16-uncompressed.bin')
);
} else {
const encGens = dockSaverEncryptionGens();
const [saverSnarkPk, saverSec, encryptionKey, decryptionKey] = SaverDecryptor.setup(encGens, chunkBitSize);
saverSk = saverSec;
saverProvingKey = saverSnarkPk.decompress();
saverVerifyingKey = saverSnarkPk.getVerifyingKeyUncompressed();
saverEk = encryptionKey.decompress();
saverDk = decryptionKey.decompress();
}
}
}
function setupBoundCheckBpp() {
if (boundCheckBppParams === undefined) {
const p = new BoundCheckBppParams(stringToBytes('Bulletproofs++ testing'));
boundCheckBppParams = p.decompress();
}
}
function setupBoundCheckSmc() {
if (boundCheckSmcParams === undefined) {
const p = new BoundCheckSmcParams(stringToBytes('set-membership check based range proof testing'));
boundCheckSmcParams = p.decompress();
}
}
function setupBoundCheckSmcWithKV() {
if (boundCheckSmcKVProverParams === undefined) {
const p = BoundCheckSmcWithKVSetup(
stringToBytes('set-membership check based range proof with keyed verification testing')
);
boundCheckSmcKVProverParams = p[0].decompress();
boundCheckSmcKVVerifierParams = p[1].decompress();
}
}
beforeAll(async () => {
await initializeWasm();
[sk1, pk1] = getKeys('seed1');
[sk2, pk2] = getKeys('seed2');
[sk3, pk3] = getKeys('seed3');
[sk4, pk4] = getKeys('seed4');
const schema1 = getExampleSchema(9);
const builder1 = new CredentialBuilder();
if (withSchemaRef) {
builder1.schema = new CredentialSchema(nonEmbeddedSchema, DefaultSchemaParsingOpts, true, undefined, schema1);
} else {
builder1.schema = new CredentialSchema(schema1);
}
builder1.subject = {
fname: 'John',
lname: 'Smith',
email: '[email protected]',
SSN: '123-456789-0',
userId: 'user:123-xyz-#',
country: 'USA',
city: 'New York',
timeOfBirth: 1662010849619,
height: 181.5,
weight: 210.4,
BMI: 23.25,
score: -13.5,
secret: 'my-secret-that-wont-tell-anyone'
};
credential1 = builder1.sign(sk1);
verifyCred(credential1, pk1, sk1);
const schema2 = getExampleSchema(11);
const builder2 = new CredentialBuilder();
if (withSchemaRef) {
builder2.schema = new CredentialSchema(nonEmbeddedSchema, DefaultSchemaParsingOpts, true, undefined, schema2);
} else {
builder2.schema = new CredentialSchema(schema2);
}
builder2.subject = {
fname: 'John',
lname: 'Smith',
isbool: true,
sensitive: {
secret: 'my-secret-that-wont-tell-anyone',
email: '[email protected]',
SSN: '123-456789-0',
userId: 'user:123-xyz-#'
},
location: {
country: 'USA',
city: 'New York'
},
timeOfBirth: 1662010849619,
physical: {
height: 181.5,
weight: 210,
BMI: 23.25
},
score: -13.5
};
credential2 = builder2.sign(sk2);
verifyCred(credential2, pk2, sk2);
const schema3 = getExampleSchema(5);
let credSchema3: CredentialSchema;
if (withSchemaRef) {
credSchema3 = new CredentialSchema(nonEmbeddedSchema, DefaultSchemaParsingOpts, true, undefined, schema3);
} else {
credSchema3 = new CredentialSchema(schema3);
}
const builder3 = new CredentialBuilder();
builder3.schema = credSchema3;
builder3.subject = {
fname: 'John',
lname: 'Smith',
sensitive: {
very: {
secret: 'my-secret-that-wont-tell-anyone'
},
email: '[email protected]',
phone: '801009801',
SSN: '123-456789-0'
},
lessSensitive: {
location: {
country: 'USA',
city: 'New York'
},
department: {
name: 'Random',
location: {
name: 'Somewhere',
geo: {
lat: -23.658,
long: 2.556
}
}
}
},
rank: 6
};
builder3.setCredentialStatus('dock:accumulator:accumId123', MEM_CHECK_STR, 'user:A-123');
credential3 = builder3.sign(sk3);
verifyCred(credential3, pk3, sk3);
const seed = stringToBytes('secret-seed-for-accum');
// @ts-ignore
[accumulator3Sk, accumulator3Pk, accumulator3, accumulator3Witness] = await setupPrefilledAccum(200, 122, 'user:A-', credSchema3, seed);
const schema4 = getExampleSchema(10);
let credSchema4: CredentialSchema;
if (withSchemaRef) {
credSchema4 = new CredentialSchema(nonEmbeddedSchema, DefaultSchemaParsingOpts, true, undefined, schema4);
} else {
credSchema4 = new CredentialSchema(schema4);
}
const builder4 = new CredentialBuilder();
builder4.schema = credSchema4;
builder4.subject = {
fname: 'John',
lname: 'Smith',
sensitive: {
email: '[email protected]',
SSN: '123-456789-0'
},
education: {
studentId: 's-22-123450',
university: {
name: 'Example University',
registrationNumber: 'XYZ-123-789'
},
transcript: {
rank: 100,
CGPA: 2.57,
scores: {
english: 60,
mathematics: 70,
science: 50,
history: 45,
geography: 40
}
}
}
};
builder4.setCredentialStatus('dock:accumulator:accumId124', MEM_CHECK_STR, 'tran:2022-YZ4-250');
credential4 = builder4.sign(sk4);
verifyCred(credential4, pk4, sk4);
const seed1 = stringToBytes('secret-seed-for-accum-4');
// @ts-ignore
[accumulator4Sk, accumulator4Pk, accumulator4, accumulator4Witness] = await setupPrefilledAccum(300, 249, 'tran:2022-YZ4-', credSchema4, seed1);
const schema5 = CredentialSchema.essential();
const subjectItem = {
type: 'object',
properties: {
name: { type: 'string' },
location: {
type: 'object',
properties: {
name: { type: 'string' },
geo: {
type: 'object',
properties: {
lat: { type: 'number', minimum: -90, multipleOf: 0.001 },
long: { type: 'number', minimum: -180, multipleOf: 0.001 }
}
}
}
}
}
};
schema5.properties[SUBJECT_STR] = {
type: 'array',
items: [subjectItem, subjectItem, subjectItem]
};
const builder5 = new CredentialBuilder();
if (withSchemaRef) {
builder5.schema = new CredentialSchema(nonEmbeddedSchema, DefaultSchemaParsingOpts, true, undefined, schema5);
} else {
builder5.schema = new CredentialSchema(schema5);
}
builder5.subject = [
{
name: 'Random',
location: {
name: 'Somewhere',
geo: {
lat: -23.658,
long: 2.556
}
}
},
{
name: 'Random-1',
location: {
name: 'Somewhere-1',
geo: {
lat: 35.01,
long: -40.987
}
}
},
{
name: 'Random-2',
location: {
name: 'Somewhere-2',
geo: {
lat: -67.0,
long: -10.12
}
}
}
];
credential5 = builder5.sign(sk1);
verifyCred(credential5, pk1, sk1);
const schema6 = CredentialSchema.essential();
const subjectItem2 = {
type: 'object',
properties: {
name: { type: 'string' },
location: {
type: 'object',
properties: {
name: { type: 'string' },
geo: {
type: 'object',
properties: {
lat: { type: 'number', minimum: -90, multipleOf: 0.001 },
long: { type: 'number', minimum: -180, multipleOf: 0.001 }
}
}
}
}
}
};
schema6.properties[SUBJECT_STR] = {
type: 'array',
items: [subjectItem2, subjectItem2, subjectItem2]
};
schema6.properties['issuer'] = {
type: 'object',
properties: {
name: { type: 'string' },
desc: { type: 'string' },
logo: { type: 'string' }
}
};
schema6.properties['issuanceDate'] = { type: 'integer', minimum: 0 };
schema6.properties['expirationDate'] = { type: 'integer', minimum: 0 };
const builder6 = new CredentialBuilder();
if (withSchemaRef) {
builder6.schema = new CredentialSchema(nonEmbeddedSchema, DefaultSchemaParsingOpts, true, undefined, schema6);
} else {
builder6.schema = new CredentialSchema(schema6);
}
builder6.subject = [
{
name: 'Random',
location: {
name: 'Somewhere',
geo: {
lat: -23.658,
long: 2.556
}
}
},
{
name: 'Random-1',
location: {
name: 'Somewhere-1',
geo: {
lat: 35.01,
long: -40.987
}
}
},
{
name: 'Random-2',
location: {
name: 'Somewhere-2',
geo: {
lat: -67.0,
long: -10.12
}
}
}
];
builder6.setTopLevelField('issuer', {
name: 'An issuer',
desc: 'Just an issuer',
logo: 'https://images.example-issuer.com/logo.png'
});
builder6.setTopLevelField('issuanceDate', 1662010849700);
builder6.setTopLevelField('expirationDate', 1662011950934);
credential6 = builder6.sign(sk1);
verifyCred(credential6, pk1, sk1);
// Schema with date type
const schema7 = CredentialSchema.essential();
schema7.properties[SUBJECT_STR] = {
type: 'object',
properties: {
name: { type: 'string' },
myDateTime: { type: 'string', format: 'date-time' },
myDate: { type: 'string', format: 'date' }
}
};
schema7.properties['issuanceDate'] = { type: 'integer', minimum: 0 };
schema7.properties['expirationDate'] = { type: 'integer', minimum: 0 };
const builder7 = new CredentialBuilder();
if (withSchemaRef) {
builder7.schema = new CredentialSchema(nonEmbeddedSchema, DefaultSchemaParsingOpts, true, undefined, schema7);
} else {
builder7.schema = new CredentialSchema(schema7);
}
builder7.subject = {
name: 'Random',
myDateTime: '2023-09-14T14:26:40.488Z',
myDate: '2023-09-14'
};
builder7.setTopLevelField('issuanceDate', 1694719600488);
builder7.setTopLevelField('expirationDate', 1994719600488);
credential7 = builder7.sign(sk1);
verifyCred(credential7, pk1, sk1);
});
it('from a flat credential - `credential1`', () => {
const builder1 = new PresentationBuilder();
expect(builder1.addCredential(credential1, isPS() ? pk1 : undefined)).toEqual(0);
builder1.markAttributesRevealed(0, new Set<string>(['credentialSubject.fname', 'credentialSubject.lname']));
const pres1 = builder1.finalize();
// These checks are made by the verifier, i.e. verifier checks that the presentation is created from one credential
expect(pres1.spec.credentials.length).toEqual(1);
expect(pres1.spec.credentials[0].revealedAttributes).toEqual({
credentialSubject: {
fname: 'John',
lname: 'Smith'
}
});
expect(pres1.spec.credentials[0].status).not.toBeDefined();
expect(pres1.context).not.toBeDefined();
expect(pres1.nonce).not.toBeDefined();
checkResult(pres1.verify([pk1]));
const presJson = pres1.toJSON();
// The schema of the credential in the presentation matches the JSON-schema
// @ts-ignore
checkSchemaFromJson(presJson.spec.credentials[0].schema, credential1.schema);
checkPresentationJson(pres1, [pk1]);
// Changing revealed attributes should fail the presentation verification
pres1.spec.credentials[0].revealedAttributes['credentialSubject'].fname = 'Alice';
expect(pres1.spec.credentials[0].revealedAttributes).toEqual({
credentialSubject: {
fname: 'Alice',
lname: 'Smith'
}
})
expect(pres1.verify([pk1]).verified).toEqual(false);
});
it('from credential1 and credential2 - presenting pseudonyms', () => {
// Service provider 1 (verifier 1) creates bases
const base1ForSecretKey = PseudonymBases.generateBaseForSecretKey(scope1);
// Pseudonym used is bound to 3 credential attributes
const bases1ForAttributes = PseudonymBases.generateBasesForAttributes(3, scope1);
// generated by prover:
let proverSecretKey1 = generateRandomFieldElement();
const attributeNames1 = new Map();
// making sure encoding/decoding works correctly
const decodedBaseForSecretKey = PseudonymBases.decodeBaseForSecretKey(base1ForSecretKey);
const encodedBaseForSecretKey = PseudonymBases.encodeBaseForSecretKey(decodedBaseForSecretKey);
expect(base1ForSecretKey).toEqual(encodedBaseForSecretKey);
const builder1 = new PresentationBuilder();
expect(builder1.addCredential(credential1, isPS() ? pk1 : undefined)).toEqual(0);
expect(builder1.addCredential(credential2, isPS() ? pk2 : undefined)).toEqual(1);
attributeNames1.set(0, ['credentialSubject.SSN', 'credentialSubject.email']);
attributeNames1.set(1, ['credentialSubject.sensitive.userId']);
expect(
builder1.addBoundedPseudonym(bases1ForAttributes, attributeNames1, base1ForSecretKey, proverSecretKey1)
).toEqual(0);
expect(builder1.addUnboundedPseudonym(base1ForSecretKey, proverSecretKey1)).toEqual(0);
const pres1 = builder1.finalize();
// verify boundedPseudonym generated locally by prover
const [decodedBoundedPseudonym, basesForAttributes, baseForSecretKey] = getDecodedBoundedPseudonym(
[credential1, credential1, credential2],
['SSN', 'email', 'sensitive.userId'],
bases1ForAttributes,
base1ForSecretKey,
proverSecretKey1
);
expect(Object.keys(pres1.spec.boundedPseudonyms as object).length).toEqual(1);
expect((pres1.spec.boundedPseudonyms as object)[decodedBoundedPseudonym]).toEqual({
commitKey: {
basesForAttributes: basesForAttributes,
baseForSecretKey: baseForSecretKey
},
attributes: Object.fromEntries(attributeNames1)
});
// verify unboundedPseudonym generated locally by prover
const expectedUnboundedPseudonym = Pseudonym.new(base1ForSecretKey, proverSecretKey1);
const decodedUnboundedPseudonym = PseudonymBases.decode(expectedUnboundedPseudonym.value);
expect(Object.keys(pres1.spec.unboundedPseudonyms as object).length).toEqual(1);
expect((pres1.spec.unboundedPseudonyms as object)[decodedUnboundedPseudonym]).toEqual({
commitKey: {
baseForSecretKey: baseForSecretKey
}
});
// verify that proofs on verifier side pass
checkResult(pres1.verify([pk1, pk2]));
checkPresentationJson(pres1, [pk1, pk2]);
});
it('from a credential with relaxed schema', () => {
// The schema does not match the credential exactly
for (let i = 1; i <= 12; i++) {
const builder = getExampleBuilder(i);
check(builder, sk1, pk1);
}
function check(credBuilder: CredentialBuilder, sk: SecretKey, pk: PublicKey) {
const credential = credBuilder.sign(sk, undefined, { requireSameFieldsAsSchema: false });
verifyCred(credential, pk, sk);
const builder7 = new PresentationBuilder();
expect(builder7.addCredential(credential, isPS() ? pk : undefined)).toEqual(0);
const pres7 = builder7.finalize();
expect(pres7.spec.credentials.length).toEqual(1);
checkResult(pres7.verify([pk]));
checkPresentationJson(pres7, [pk]);
if (isKvac()) {
checkResult(pres7.verify([sk]));
checkPresentationJson(pres7, [sk]);
}
}
});
it('from with context and nonce', () => {
const ctx = 'Test context: Someeee vverrryyyyyy longgggg contexxxxttttt .............';
const nonce = randomFieldElement();
const builder1 = new PresentationBuilder();
expect(builder1.addCredential(credential1, isPS() ? pk1 : undefined)).toEqual(0);
builder1.markAttributesRevealed(0, new Set<string>(['credentialSubject.fname', 'credentialSubject.lname']));
builder1.context = ctx;
let pres = builder1.finalize();
expect(pres.context).toEqual(ctx);
expect(pres.nonce).not.toBeDefined();
checkResult(pres.verify([pk1]));
checkPresentationJson(pres, [pk1]);
// Change the context to be something else and the presentation should not verify
// @ts-ignore
pres.context = 'Some other context';
expect(pres.verify([pk1]).verified).toBe(false);
const builder2 = new PresentationBuilder();
expect(builder2.addCredential(credential1, isPS() ? pk1 : undefined)).toEqual(0);
builder2.markAttributesRevealed(0, new Set<string>(['credentialSubject.fname', 'credentialSubject.lname']));
builder2.context = ctx;
builder2.nonce = nonce;
pres = builder2.finalize();
// These checks are made by the verifier, i.e. verifier checks that the nonce and context in the presentation are what's
// expected and the presentation is valid.
expect(pres.context).toEqual(ctx);
expect(areUint8ArraysEqual(pres.nonce as Uint8Array, nonce)).toEqual(true);
checkResult(pres.verify([pk1]));
checkPresentationJson(pres, [pk1]);
// Change the nonce to be something else and the presentation should not verify
// @ts-ignore
pres.nonce = randomFieldElement();
expect(pres.verify([pk1]).verified).toBe(false);
const builder3 = new PresentationBuilder();
expect(builder3.addCredential(credential1, isPS() ? pk1 : undefined)).toEqual(0);
builder3.markAttributesRevealed(0, new Set<string>(['credentialSubject.fname', 'credentialSubject.lname']));
builder3.nonce = nonce;
pres = builder3.finalize();
// These checks are made by the verifier, i.e. verifier checks that the nonce and context in the presentation are whats
// expected and the presentation is valid.
expect(pres.context).not.toBeDefined();
expect(areUint8ArraysEqual(pres.nonce as Uint8Array, nonce)).toEqual(true);
checkResult(pres.verify([pk1]));
checkPresentationJson(pres, [pk1]);
});
it('from a nested credential - `credential2`', () => {
const builder2 = new PresentationBuilder();
expect(builder2.addCredential(credential2, isPS() ? pk2 : undefined)).toEqual(0);
builder2.markAttributesRevealed(
0,
new Set<string>([
'credentialSubject.fname',
'credentialSubject.location.country',
'credentialSubject.physical.BMI'
])
);
const pres2 = builder2.finalize();
expect(pres2.spec.credentials.length).toEqual(1);
expect(pres2.spec.credentials[0].revealedAttributes).toEqual({
credentialSubject: {
fname: 'John',
location: { country: 'USA' },
physical: { BMI: 23.25 }
}
});
expect(pres2.spec.credentials[0].status).not.toBeDefined();
checkResult(pres2.verify([pk2]));
const presJson = pres2.toJSON();
// The schema of the credential in the presentation matches the JSON-schema
// @ts-ignore
checkSchemaFromJson(presJson.spec.credentials[0].schema, credential2.schema);
checkPresentationJson(pres2, [pk2]);
});
it('from a nested credential with credential status - `credential3`', () => {
const builder3 = new PresentationBuilder();
expect(builder3.addCredential(credential3, isPS() ? pk3 : undefined)).toEqual(0);
builder3.markAttributesRevealed(
0,
new Set<string>([
'credentialSubject.fname',
'credentialSubject.lessSensitive.location.country',
'credentialSubject.lessSensitive.department.location.name'
])
);
builder3.addAccumInfoForCredStatus(0, accumulator3Witness, accumulator3.accumulated, accumulator3Pk, {
blockNo: 2010334
});
const pres3 = builder3.finalize();
expect(pres3.spec.credentials[0].revealedAttributes).toEqual({
credentialSubject: {
fname: 'John',
lessSensitive: { location: { country: 'USA' }, department: { location: { name: 'Somewhere' } } }
}
});
// This check is made by the verifier, i.e. verifier checks that the accumulator id, type, value and timestamp (`blockNo`)
// are as expected
expect(pres3.spec.getStatus(0)).toEqual({
id: 'dock:accumulator:accumId123',
[TYPE_STR]: VB_ACCUMULATOR_22,
revocationCheck: MEM_CHECK_STR,
accumulated: accumulator3.accumulated,
extra: { blockNo: 2010334 }
});
// Verifier passes the accumulator public key for verification
const acc = new Map();
acc.set(0, accumulator3Pk);
checkResult(pres3.verify([pk3], acc));
const presJson = pres3.toJSON();
// The schema of the credential in the presentation matches the JSON-schema
// @ts-ignore
checkSchemaFromJson(presJson.spec.credentials[0].schema, credential3.schema);
checkPresentationJson(pres3, [pk3], acc);
});
it('from 2 credentials, `credential1` and `credential2`, and prove some attributes equal', () => {
const builder0 = new PresentationBuilder();
expect(builder0.addCredential(credential1, isPS() ? pk1 : undefined)).toEqual(0);
expect(builder0.addCredential(credential2, isPS() ? pk2 : undefined)).toEqual(1);
builder0.enforceAttributeEquality([0, 'credentialSubject.SSN'], [1, 'credentialSubject.location.city']);
builder0.enforceAttributeEquality([0, 'credentialSubject.city'], [1, 'credentialSubject.sensitive.SSN']);
expect(() => builder0.finalize()).toThrow('Attribute equality not satisfied');
const builder4 = new PresentationBuilder();
expect(builder4.addCredential(credential1, isPS() ? pk1 : undefined)).toEqual(0);
expect(builder4.addCredential(credential2, isPS() ? pk2 : undefined)).toEqual(1);
builder4.markAttributesRevealed(0, new Set<string>(['credentialSubject.fname', 'credentialSubject.lname']));
builder4.markAttributesRevealed(
1,
new Set<string>([
'credentialSubject.fname',
'credentialSubject.location.country',
'credentialSubject.physical.BMI'
])
);
builder4.enforceAttributeEquality([0, 'credentialSubject.SSN'], [1, 'credentialSubject.sensitive.SSN']);
builder4.enforceAttributeEquality([0, 'credentialSubject.city'], [1, 'credentialSubject.location.city']);
builder4.enforceAttributeEquality([0, 'credentialSubject.height'], [1, 'credentialSubject.physical.height']);
const pres4 = builder4.finalize();
expect(pres4.spec.credentials.length).toEqual(2);
expect(pres4.spec.credentials[0].revealedAttributes).toEqual({
credentialSubject: {
fname: 'John',
lname: 'Smith'
}
});
expect(pres4.spec.credentials[1].revealedAttributes).toEqual({
credentialSubject: {
fname: 'John',
location: { country: 'USA' },
physical: { BMI: 23.25 }
}
});
if (!isKvac()) {
// Public keys in wrong order
expect(pres4.verify([pk2, pk1]).verified).toEqual(false);
// Public keys with wrong indices
const pks = new Map();
pks.set(0, pk2);
pks.set(1, pk1);
expect(pres4.verify(pks).verified).toEqual(false);
}
checkResult(pres4.verify([pk1, pk2]));
const presJson = pres4.toJSON();
// The schema of the credentials in the presentation matches their JSON-schema
// @ts-ignore
checkSchemaFromJson(presJson.spec.credentials[0].schema, credential1.schema);
// @ts-ignore
checkSchemaFromJson(presJson.spec.credentials[1].schema, credential2.schema);
checkPresentationJson(pres4, [pk1, pk2]);
});
it('from 2 credentials, both having credential status', () => {
const builder5 = new PresentationBuilder();
expect(builder5.addCredential(credential3, isPS() ? pk3 : undefined)).toEqual(0);
expect(builder5.addCredential(credential4, isPS() ? pk4 : undefined)).toEqual(1);
builder5.markAttributesRevealed(
0,
new Set<string>([
'credentialSubject.fname',
'credentialSubject.lessSensitive.location.country',
'credentialSubject.lessSensitive.department.location.name'
])
);
builder5.markAttributesRevealed(
1,
new Set<string>([
'credentialSubject.education.university.name',
'credentialSubject.education.university.registrationNumber'
])
);
builder5.enforceAttributeEquality([0, 'credentialSubject.sensitive.SSN'], [1, 'credentialSubject.sensitive.SSN']);
builder5.enforceAttributeEquality([0, 'credentialSubject.lname'], [1, 'credentialSubject.lname']);
builder5.addAccumInfoForCredStatus(0, accumulator3Witness, accumulator3.accumulated, accumulator3Pk, {
blockNo: 2010334
});
builder5.addAccumInfoForCredStatus(1, accumulator4Witness, accumulator4.accumulated, accumulator4Pk, {
blockNo: 2010340
});
const pres5 = builder5.finalize();
expect(pres5.spec.credentials.length).toEqual(2);
expect(pres5.spec.credentials[0].revealedAttributes).toEqual({
credentialSubject: {
fname: 'John',
lessSensitive: { location: { country: 'USA' }, department: { location: { name: 'Somewhere' } } }
}
});
expect(pres5.spec.credentials[1].revealedAttributes).toEqual({
credentialSubject: {
education: { university: { name: 'Example University', registrationNumber: 'XYZ-123-789' } }
}
});
// These checks are made by the verifier, i.e. verifier checks that the accumulator id, type, value and timestamp (`blockNo`)
// are as expected for both credentials
expect(pres5.spec.getStatus(0)).toEqual({
id: 'dock:accumulator:accumId123',
[TYPE_STR]: VB_ACCUMULATOR_22,
revocationCheck: MEM_CHECK_STR,
accumulated: accumulator3.accumulated,
extra: { blockNo: 2010334 }
});
expect(pres5.spec.getStatus(1)).toEqual({
id: 'dock:accumulator:accumId124',
[TYPE_STR]: VB_ACCUMULATOR_22,
revocationCheck: MEM_CHECK_STR,
accumulated: accumulator4.accumulated,
extra: { blockNo: 2010340 }
});
const acc = new Map();
acc.set(0, accumulator3Pk);
acc.set(1, accumulator4Pk);
checkResult(pres5.verify([pk3, pk4], acc));
const presJson = pres5.toJSON();
// The schema of the credentials in the presentation matches their JSON-schema
// @ts-ignore
checkSchemaFromJson(presJson.spec.credentials[0].schema, credential3.schema);
// @ts-ignore
checkSchemaFromJson(presJson.spec.credentials[1].schema, credential4.schema);
checkPresentationJson(pres5, [pk3, pk4], acc);
});
it('from multiple credentials, some having credential status (revocable) and some not', () => {
const builder6 = new PresentationBuilder();
expect(builder6.addCredential(credential1, isPS() ? pk1 : undefined)).toEqual(0);
expect(builder6.addCredential(credential2, isPS() ? pk2 : undefined)).toEqual(1);
expect(builder6.addCredential(credential3, isPS() ? pk3 : undefined)).toEqual(2);
expect(builder6.addCredential(credential4, isPS() ? pk4 : undefined)).toEqual(3);
builder6.markAttributesRevealed(0, new Set<string>(['credentialSubject.fname', 'credentialSubject.lname']));
builder6.markAttributesRevealed(
1,
new Set<string>([
'credentialSubject.fname',
'credentialSubject.location.country',
'credentialSubject.physical.BMI'
])
);
builder6.markAttributesRevealed(
2,
new Set<string>([
'credentialSubject.fname',
'credentialSubject.lessSensitive.location.country',
'credentialSubject.lessSensitive.department.location.name'
])
);
builder6.markAttributesRevealed(
3,
new Set<string>([
'credentialSubject.education.university.name',
'credentialSubject.education.university.registrationNumber'
])
);
builder6.enforceAttributeEquality([0, 'credentialSubject.SSN'], [1, 'credentialSubject.sensitive.SSN']);
builder6.enforceAttributeEquality([0, 'credentialSubject.city'], [1, 'credentialSubject.location.city']);
builder6.enforceAttributeEquality([0, 'credentialSubject.height'], [1, 'credentialSubject.physical.height']);
builder6.enforceAttributeEquality([2, 'credentialSubject.sensitive.SSN'], [3, 'credentialSubject.sensitive.SSN']);
builder6.enforceAttributeEquality([2, 'credentialSubject.lname'], [3, 'credentialSubject.lname']);
builder6.addAccumInfoForCredStatus(2, accumulator3Witness, accumulator3.accumulated, accumulator3Pk, {
blockNo: 2010334
});
builder6.addAccumInfoForCredStatus(3, accumulator4Witness, accumulator4.accumulated, accumulator4Pk, {
blockNo: 2010340
});
const pres6 = builder6.finalize();
expect(pres6.spec.credentials.length).toEqual(4);
expect(pres6.spec.credentials[0].revealedAttributes).toEqual({
credentialSubject: {
fname: 'John',
lname: 'Smith'
}
});
expect(pres6.spec.credentials[1].revealedAttributes).toEqual({
credentialSubject: {
fname: 'John',
location: { country: 'USA' },
physical: { BMI: 23.25 }
}
});
expect(pres6.spec.credentials[2].revealedAttributes).toEqual({
credentialSubject: {
fname: 'John',
lessSensitive: { location: { country: 'USA' }, department: { location: { name: 'Somewhere' } } }
}
});
expect(pres6.spec.credentials[3].revealedAttributes).toEqual({
credentialSubject: {
education: { university: { name: 'Example University', registrationNumber: 'XYZ-123-789' } }
}
});
expect(pres6.spec.getStatus(2)).toEqual({
id: 'dock:accumulator:accumId123',
[TYPE_STR]: VB_ACCUMULATOR_22,
revocationCheck: MEM_CHECK_STR,