Blockchain-Based DNS Root Zone Management Decentralization for Internet of Things

Algorithm 4. DataValidation().

Input:

  CurDomainTxn

Output:

  bool

1: if A certain field in CurDomainTxn has an invalid value

then

2:  return false

3: end if

4: / check if the values conform to DNS/DNSSEC protocol /

5: if CurDomainTxn.[NAME/CLASS/TTL/TYPE/RDATA] do not conform to DNS protocol specification then

6:  return false

7: end if

8: if CurDomainTxn.RRSIG do not conform to DNSSEC protocol specification then

9:  return false

10: end if

11: DelegationTxn = CurDomainTxn.PrevTxn

12: / check signature of CurDomainTxn /

13: if DelegationTxn!=∅; then

14:  verify_key = DelegationTxn.AuthKey

15:  sig = CurDomainTxn.TxnSignature

16:  if VeriSig(verify_key, sig) != true then

17:   return false

18:  end if

19:  if DelegateVerification(DelegationTxn) == false then

20:   return false

21:  end if

22: end if

23: return true

Algorithm 4. DataValidation().