def verifyPredicateProof(credDefs,
credDefPks,
issuerSecretKeys,
proofBuilderWithAttribs,
revealedAttrs,
predicate,
verifier: Verifier):
proofBuilder, attrs = proofBuilderWithAttribs
presentationToken = getPresentationToken(credDefs,
credDefPks,
issuerSecretKeys,
proofBuilder, attrs.encoded())
nonce = verifier.generateNonce(interactionId=1)
proof = proofBuilder.preparePredicateProof(creds=presentationToken,
attrs=attrs.encoded(),
revealedAttrs=revealedAttrs,
nonce=nonce,
predicate=predicate)
return verifier.verifyPredicateProof(proof=proof,
credDefPks=credDefPks,
nonce=nonce,
attrs=attrs.encoded(),
revealedAttrs=revealedAttrs,
predicate=predicate)
async def create_proof_request(conn):
# 1. Init entities
public_repo = PublicRepoInMemory()
attr_repo = AttributeRepoInMemory()
issuer = Issuer(IssuerWalletInMemory('issuer1', public_repo), attr_repo)
# 2. Create a Schema
schema = await issuer.genSchema('GVT', '1.0', GVT.attribNames())
schema_id = ID(schema.getKey())
# 3. Create keys for the Schema
global global_dict
await issuer.wallet.submitPublicKeys(schema_id, global_dict['public_key'])
# 4. set attributes for user1
prover_id = 'BzfFCYk'
attributes = GVT.attribs(name='Alex', age=28, height=175, sex='male')
attr_repo.addAttributes(schema.getKey(), prover_id, attributes)
verifier = Verifier(WalletInMemory('verifier1', public_repo))
proof_request = ProofRequest(
name='Test_proof', version='1.0',
nonce=verifier.generateNonce(),
verifiableAttributes={
'attr_uuid': AttributeInfo('name', schema.seqId)},
predicates={'predicate_uuid': PredicateGE('age', 18)})
global_dict['verifier'] = verifier
global_dict['proof_request'] = proof_request
conn.send(json.dumps(proof_request.to_str_dict()).encode())
async def testSingleIssuerSingleProver(primes1):
# 1. Init entities
publicRepo = PublicRepoInMemory()
attrRepo = AttributeRepoInMemory()
issuer = Issuer(IssuerWalletInMemory('issuer1', publicRepo), attrRepo)
# 2. Create a Schema
schema = await issuer.genSchema('GVT', '1.0', GVT.attribNames())
schemaId = ID(schema.getKey())
# 3. Create keys for the Schema
await issuer.genKeys(schemaId, **primes1)
# 4. Issue accumulator
await issuer.issueAccumulator(schemaId=schemaId, iA='110', L=5)
# 4. set attributes for user1
userId = '111'
attrs = GVT.attribs(name='Alex', age=28, height=175, sex='male')
attrRepo.addAttributes(schema.getKey(), userId, attrs)
# 5. request Claims
prover = Prover(ProverWalletInMemory(userId, publicRepo))
claimsReq = await prover.createClaimRequest(schemaId)
claims = await issuer.issueClaim(schemaId, claimsReq)
await prover.processClaim(schemaId, claims)
# 6. proof Claims
proofInput = ProofInput(['name'], [PredicateGE('age', 18)])
verifier = Verifier(WalletInMemory('verifier1', publicRepo))
nonce = verifier.generateNonce()
proof, revealedAttrs = await prover.presentProof(proofInput, nonce)
assert revealedAttrs['name'] == 'Alex'
assert await verifier.verify(proofInput, proof, revealedAttrs, nonce)
async def testSingleIssuerMultipleCredDefsSingleProver(primes1, primes2):
# 1. Init entities
publicRepo = PublicRepoInMemory()
attrRepo = AttributeRepoInMemory()
issuer = Issuer(IssuerWalletInMemory('issuer1', publicRepo), attrRepo)
# 2. Create a Schema
schema1 = await issuer.genSchema('GVT', '1.0', GVT.attribNames())
schemaId1 = ID(schema1.getKey())
schema2 = await issuer.genSchema('XYZCorp', '1.0', XYZCorp.attribNames())
schemaId2 = ID(schema2.getKey())
# 3. Create keys for the Schema
await issuer.genKeys(schemaId1, **primes1)
await issuer.genKeys(schemaId2, **primes2)
# 4. Issue accumulator
await issuer.issueAccumulator(schemaId=schemaId1, iA='110', L=5)
await issuer.issueAccumulator(schemaId=schemaId2, iA=9999999, L=5)
# 4. set attributes for user1
userId = '111'
attrs1 = GVT.attribs(name='Alex', age=28, height=175, sex='male')
attrs2 = XYZCorp.attribs(status='FULL', period=8)
attrRepo.addAttributes(schema1.getKey(), userId, attrs1)
attrRepo.addAttributes(schema2.getKey(), userId, attrs2)
# 5. request Claims
prover = Prover(ProverWalletInMemory(userId, publicRepo))
claimsReqs = await prover.createClaimRequests([schemaId1, schemaId2])
claims = await issuer.issueClaims(claimsReqs)
await prover.processClaims(claims)
# 6. proof Claims
verifier = Verifier(WalletInMemory('verifier1', publicRepo))
proofRequest = ProofRequest("proof1",
"1.0",
verifier.generateNonce(),
verifiableAttributes={
'attr_uuid1':
AttributeInfo('name', schema1.seqId)
},
predicates={
'predicate_uuid1': PredicateGE('age', 18),
'predicate_uuid2':
PredicateGE('period', 5)
})
proof = await prover.presentProof(proofRequest)
assert proof.requestedProof.revealed_attrs['attr_uuid1'][1] == 'Alex'
assert await verifier.verify(proofRequest, proof)
async def testMultiplIssuersSingleProver(primes1, primes2):
# 1. Init entities
publicRepo = PublicRepoInMemory()
attrRepo = AttributeRepoInMemory()
issuer1 = Issuer(IssuerWalletInMemory('issuer1', publicRepo), attrRepo)
issuer2 = Issuer(IssuerWalletInMemory('issuer2', publicRepo), attrRepo)
# 2. Create a Schema
schema1 = await issuer1.genSchema('GVT', '1.0', GVT.attribNames())
schemaId1 = ID(schema1.getKey())
schema2 = await issuer2.genSchema('XYZCorp', '1.0', XYZCorp.attribNames())
schemaId2 = ID(schema2.getKey())
# 3. Create keys for the Schema
await issuer1.genKeys(schemaId1, **primes1)
await issuer2.genKeys(schemaId2, **primes2)
# 4. Issue accumulator
await issuer1.issueAccumulator(schemaId=schemaId1, iA='110', L=5)
await issuer2.issueAccumulator(schemaId=schemaId2, iA=9999999, L=5)
# 4. set attributes for user1
userId = '111'
attrs1 = GVT.attribs(name='Alex', age=28, height=175, sex='male')
attrs2 = XYZCorp.attribs(status='FULL', period=8)
attrRepo.addAttributes(schema1.getKey(), userId, attrs1)
attrRepo.addAttributes(schema2.getKey(), userId, attrs2)
# 5. request Claims
prover = Prover(ProverWalletInMemory(userId, publicRepo))
claimsReq1 = await prover.createClaimRequest(schemaId1)
claimsReq2 = await prover.createClaimRequest(schemaId2)
claims1 = await issuer1.issueClaim(schemaId1, claimsReq1)
claims2 = await issuer2.issueClaim(schemaId2, claimsReq2)
await prover.processClaim(schemaId1, claims1)
await prover.processClaim(schemaId2, claims2)
# 6. proof Claims
proofInput = ProofInput(['name', 'status'],
[PredicateGE('age', 18),
PredicateGE('period', 5)])
verifier = Verifier(WalletInMemory('verifier1', publicRepo))
nonce = verifier.generateNonce()
proof, revealedAttrs = await prover.presentProof(proofInput, nonce)
assert revealedAttrs['name'] == 'Alex'
assert revealedAttrs['status'] == 'FULL'
assert await verifier.verify(proofInput, proof, revealedAttrs, nonce)
async def testSingleIssuerSingleProverPrimaryOnly(primes1):
# 1. Init entities
publicRepo = PublicRepoInMemory()
attrRepo = AttributeRepoInMemory()
issuer = Issuer(IssuerWalletInMemory('issuer1', publicRepo), attrRepo)
# 2. Create a Schema
schema = await issuer.genSchema('GVT', '1.0', GVT.attribNames())
schemaId = ID(schema.getKey())
# 3. Create keys for the Schema
await issuer.genKeys(schemaId, **primes1)
# 4. Issue accumulator
await issuer.issueAccumulator(schemaId=schemaId, iA='110', L=5)
# 4. set attributes for user1
userId = '111'
attrs = GVT.attribs(name='Alex', age=28, height=175, sex='male')
attrRepo.addAttributes(schema.getKey(), userId, attrs)
# 5. request Claims
prover = Prover(ProverWalletInMemory(userId, publicRepo))
claimsReq = await prover.createClaimRequest(schemaId, None, False)
(claim_signature,
claim_attributes) = await issuer.issueClaim(schemaId, claimsReq)
await prover.processClaim(schemaId, claim_attributes, claim_signature)
# 6. proof Claims
verifier = Verifier(WalletInMemory('verifier1', publicRepo))
proofRequest = ProofRequest(
"proof1",
"1.0",
verifier.generateNonce(),
verifiableAttributes={
'attr_uuid1': AttributeInfo('name', schema.seqId)
},
predicates={'predicate_uuid1': PredicateGE('age', 18)})
proof = await prover.presentProof(proofRequest)
assert proof.requestedProof.revealed_attrs['attr_uuid1'][1] == 'Alex'
assert await verifier.verify(proofRequest, proof)
async def presentProofAndVerify(verifier: Verifier, proofInput: ProofInput,
prover):
nonce = verifier.generateNonce()
proof, revealedAttrs = await prover.presentProof(proofInput, nonce)
return await verifier.verify(proofInput, proof, revealedAttrs, nonce)
def fetchNonce(self, interactionId, verifier: Verifier):
return verifier.generateNonce(interactionId)
def testInteraction(gvtSecretKey):
mcds = MemoryCredDefStore()
miks = MemoryIssuerKeyStore()
attrRepo = InMemoryAttrRepo()
attrs = GVT.attribs(name='John Anthony White', age=41, sex='male')
attrNames = tuple(attrs.keys())
revealedAttrs = [
"age",
]
encodedAttrs = attrs.encoded()
credName = "Profile"
credVersion = "1.0"
attrRepo.addAttributes(proverId, attrs)
misks = MemoryIssuerSecretKeyStore()
issuer = Issuer(issuerId,
attrRepo,
credDefStore=mcds,
issuerSecretKeyStore=misks)
credDefId = 1
cd = CredentialDefinition(credDefId, attrNames, credName, credVersion)
mcds.publishCredDef(cd)
# Issuer Key set up
issuerKeyId = 1
issuerSecretKey = IssuerSecretKey(cd, sk=gvtSecretKey, uid=issuerKeyId)
misks.put(issuerSecretKey)
issuerKey = issuerSecretKey.PK
miks.publishIssuerKey(issuerKey)
# issuer.addNewCredDef(cd)
prover = Prover(proverId, mcds, miks)
verifier = Verifier(verifierId, mcds, miks)
nonce = verifier.generateNonce(interactionId)
proofBuilder = prover.newProofBuilder({issuerId: issuerKeyId})
credential = issuer.createCred(proverId,
cduid=credDefId,
name=credName,
version=credVersion,
U=proofBuilder.U[issuerId])
presentationToken = proofBuilder.getPresentationToken(
issuer.id, credential)
proofBuilder.setParams(presentationToken, revealedAttrs, nonce)
proof = proofBuilder.prepareProof(proofBuilder.issuerPks,
proofBuilder.masterSecret,
proofBuilder.credential, encodedAttrs,
proofBuilder.revealedAttrs,
proofBuilder.nonce)
assert verifier.verify(issuerId=issuer.id,
name=credName,
version=credVersion,
proof=proof,
nonce=proofBuilder.nonce,
attrs=encodedAttrs,
revealedAttrs=proofBuilder.revealedAttrs,
credDefId=credDefId,
issuerKeyId=issuerKeyId)