async def initNonRevocationClaim(self, schemaId: ID,
claim: NonRevocationClaim):
vrPrime = (await
self._wallet.getNonRevocClaimInitData(schemaId)).vPrime
newV = claim.v + vrPrime
claim = claim._replace(v=newV)
await self._testWitnessCredential(schemaId, claim)
return claim
async def updateNonRevocationClaim(self,
schemaKey,
c2: NonRevocationClaim,
ts=None,
seqNo=None):
if await self._wallet.shouldUpdateAccumulator(schemaId=ID(schemaKey),
ts=ts,
seqNo=seqNo):
await self._wallet.updateAccumulator(schemaId=ID(schemaKey),
ts=ts,
seqNo=seqNo)
oldV = c2.witness.V
newAccum = await self._wallet.getAccumulator(ID(schemaKey=schemaKey))
newV = newAccum.V
tails = await self._wallet.getTails(ID(schemaKey=schemaKey))
if c2.i not in newV:
raise ValueError("Can not update Witness. I'm revoced.")
if oldV != newV:
vOldMinusNew = oldV - newV
vNewMinusOld = newV - oldV
omegaDenom = 1
for j in vOldMinusNew:
omegaDenom *= tails[newAccum.L + 1 - j + c2.i]
omegaNum = 1
newOmega = c2.witness.omega
for j in vNewMinusOld:
omegaNum *= tails[newAccum.L + 1 - j + c2.i]
newOmega *= omegaNum / omegaDenom
newWitness = c2.witness._replace(V=newV, omega=newOmega)
c2 = c2._replace(witness=newWitness)
await self._wallet.submitNonRevocClaim(schemaId=ID(schemaKey),
claim=c2)
return c2