def createNym(looper, nym, creatorClient, creatorWallet: Wallet, role=None):
idy = Identity(identifier=nym, role=role)
creatorWallet.addSponsoredIdentity(idy)
reqs = creatorWallet.preparePending()
creatorClient.submitReqs(*reqs)
def check():
assert creatorWallet._sponsored[nym].seqNo
looper.run(eventually(check, timeout=2))
def testAnonCredFlow(genned, looper, tdir, nodeSet, issuerWallet: Wallet,
proverWallet: Wallet, verifierWallet, addedIPV):
# Don't move the following import outside of this method, otherwise that
# client class doesn't gets reloaded and it doesn't get updated with the
# correct plugin class/methods and it gives an error.
# (for permanent solution bug is created: #130181205)
from sovrin.test.helper import genTestClient
BYU = IssuerModule.AttribDef('BYU', [
IssuerModule.AttribType("first_name", encode=True),
IssuerModule.AttribType("last_name", encode=True),
IssuerModule.AttribType("birth_date", encode=True),
IssuerModule.AttribType("expire_date", encode=True),
IssuerModule.AttribType("undergrad", encode=True),
IssuerModule.AttribType("postgrad", encode=True)
])
setupLogging(DISPLAY_LOG_LEVEL, Console.Wordage.mute)
logger = getlogger("test_anon_creds")
logging.root.addHandler(DemoHandler(partial(out, logger)))
logging.root.handlers = []
attributes = BYU.attribs(first_name="John",
last_name="Doe",
birth_date="1970-01-01",
expire_date="2300-01-01",
undergrad="True",
postgrad="False")
attrNames = tuple(attributes.keys())
# 3 Sovrin clients acting as Issuer, Signer and Verifier
issuerC, _ = genTestClient(nodeSet, tmpdir=tdir, peerHA=genHa())
proverC, _ = genTestClient(nodeSet, tmpdir=tdir, peerHA=genHa())
verifierC, _ = genTestClient(nodeSet, tmpdir=tdir, peerHA=genHa())
looper.add(issuerC)
looper.add(proverC)
looper.add(verifierC)
looper.run(issuerC.ensureConnectedToNodes(),
proverC.ensureConnectedToNodes(),
verifierC.ensureConnectedToNodes())
makePendingTxnsRequest(issuerC, issuerWallet)
makePendingTxnsRequest(proverC, proverWallet)
makePendingTxnsRequest(verifierC, verifierWallet)
# Adding signers
# issuer.signers[issuerSigner.identifier] = issuerSigner
logger.display("Key pair for Issuer created \n"
"Public key is {} \n"
"Private key is stored on disk\n".format(
issuerWallet.defaultId))
# prover.signers[proverSigner.identifier] = proverSigner
logger.display("Key pair for Prover created \n"
"Public key is {} \n"
"Private key is stored on disk\n".format(
proverWallet.defaultId))
# verifier.signers[verifierSigner.identifier] = verifierSigner
logger.display("Key pair for Verifier created \n"
"Public key is {} \n"
"Private key is stored on disk\n".format(
verifierWallet.defaultId))
# TODO BYU.name is used here instead of issuerSigner.identifier due to
# tight coupling in Attribs.encoded()
issuerId = BYU.name
proverId = proverWallet.defaultId
# Issuer's attribute repository
attrRepo = IssuerModule.InMemoryAttrRepo()
attrRepo.attributes = {proverId: attributes}
name1 = "Qualifications"
version1 = "1.0"
ip = issuerC.peerHA[0]
port = issuerC.peerHA[1]
interactionId = 'LOGIN-1'
# This is the issuer entity
issuer = IssuerModule.Issuer(issuerId, attrRepo)
# issuer.attributeRepo = attrRepo
# Issuer publishes credential definition to Sovrin ledger
csk = CredDefSecretKey(*staticPrimes().get("prime1"))
cskId = issuerWallet.addCredDefSk(str(csk))
credDef = CredDef(seqNo=None,
attrNames=attrNames,
name=name1,
version=version1,
origin=issuerWallet.defaultId,
secretKey=cskId)
# credDef = issuer.addNewCredDef(attrNames, name1, version1,
# p_prime="prime1", q_prime="prime1", ip=ip,
# port=port)
# issuer.credentialDefinitions = {(name1, version1): credDef}
logger.display("Issuer: Creating version {} of credential definition"
" for {}".format(version1, name1))
print("Credential definition: ")
pprint.pprint(credDef.get()) # Pretty-printing the big object.
pending = issuerWallet.addCredDef(credDef)
reqs = issuerWallet.preparePending()
# op = {TXN_TYPE: CRED_DEF,
# DATA: getCredDefTxnData(credDef)}
logger.display("Issuer: Writing credential definition to "
"Sovrin Ledger...")
issuerC.submitReqs(*reqs)
def chk():
assert issuerWallet.getCredDef(
(name1, version1, issuerWallet.defaultId)).seqNo is not None
looper.run(eventually(chk, retryWait=.1, timeout=30))
# submitAndCheck(looper, issuerC, issuerWallet, op)
# Prover requests Issuer for credential (out of band)
logger.display("Prover: Requested credential from Issuer")
# Issuer issues a credential for prover
logger.display("Issuer: Creating credential for "
"{}".format(proverWallet.defaultId))
encodedAttributes = attributes.encoded()
revealedAttrs = ["undergrad"]
prover = ProverModule.Prover(proverId)
pk = {issuerId: prover.getPk(credDef)}
proofBuilder = ProofBuilderModule.ProofBuilder(pk)
proofId = proofBuilder.id
prover.proofBuilders[proofId] = proofBuilder
cred = issuer.createCred(proverId, name1, version1,
proofBuilder.U[issuerId])
logger.display("Prover: Received credential from "
"{}".format(issuerWallet.defaultId))
# Prover intends to prove certain attributes to a Verifier
# Verifier issues a nonce
logger.display("Prover: Requesting Nonce from verifier…")
logger.display("Verifier: Nonce received from prover"
" {}".format(proverId))
verifierId = verifierWallet.defaultId
verifier = VerifierModule.Verifier(verifierId)
nonce = verifier.generateNonce(interactionId)
logger.display("Verifier: Nonce sent.")
logger.display("Prover: Nonce received")
presentationToken = {
issuerId: (cred[0], cred[1], proofBuilder.vprime[issuerId] + cred[2])
}
# Prover discovers Issuer's credential definition
logger.display("Prover: Preparing proof for attributes: "
"{}".format(revealedAttrs))
proofBuilder.setParams(presentationToken, revealedAttrs, nonce)
prf = ProofBuilderModule.ProofBuilder.prepareProof(
credDefPks=proofBuilder.credDefPks,
masterSecret=proofBuilder.masterSecret,
creds=presentationToken,
encodedAttrs=encodedAttributes,
revealedAttrs=revealedAttrs,
nonce=nonce)
logger.display("Prover: Proof prepared.")
logger.display("Prover: Proof submitted")
logger.display("Verifier: Proof received.")
logger.display("Verifier: Looking up Credential Definition"
" on Sovrin Ledger...")
# Verifier fetches the credential definition from ledger
verifier.credentialDefinitions = {(issuerId, name1, version1): credDef}
verified = VerifierModule.Verifier.verifyProof(pk, prf, nonce,
attributes.encoded(),
revealedAttrs)
# Verifier verifies proof
logger.display("Verifier: Verifying proof...")
logger.display("Verifier: Proof verified.")
assert verified
logger.display("Prover: Proof accepted.")
