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I was just wondering since disposable addresses and sub-addresses are derived from the main wallet address.

  • "Also would having the private viewkey or spendkey of the main address affect the security of all the disposable addresses and sub-addresses?" This part is unclear to me. Can you rephrase it? – kenshi84 Mar 21 '17 at 23:46
  • I will just remove that part of the question since those addresses have no keys to get affected by – samwellj Mar 22 '17 at 16:28
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No.

Given an output pubkey P in a new transaction with its tx pubkey being R, you can recognize it as your incoming transfer by using your private viewkey a, looking for P - Hs(a*R)*G in your hashtable and finding an entry recoding the sub-address's index j. Its private key P=x*G is obtained as x = Hs(a*R) + b + Hs(a || j). So you need both of the original private view and spend keys for receiving funds transferred to sub-addresses and disposable addresses.

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