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Minor: add an explanatory comment to the two-party trade protocol.

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This commit is contained in:
Mike Hearn 2016-02-01 16:06:52 +01:00
parent 882217fa9d
commit b3e801eb85
1 changed files with 4 additions and 1 deletions
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5
src/main/kotlin/contracts/protocols/TwoPartyTradeProtocol.kt
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@ -165,7 +165,10 @@ object TwoPartyTradeProtocol {
val cashSigningPubKeys = Cash().craftSpend(ptx, tradeRequest.price, tradeRequest.sellerOwnerKey, cashStates)
// Add inputs/outputs/a command for the movement of the asset.
ptx.addInputState(tradeRequest.assetForSale.ref)
// Just pick some new public key for now.
// Just pick some new public key for now. This won't be linked with our identity in any way, which is what
// we want for privacy reasons: the key is here ONLY to manage and control ownership, it is not intended to
// reveal who the owner actually is. The key management service is expected to derive a unique key from some
// initial seed in order to provide privacy protection.
val freshKey = serviceHub.keyManagementService.freshKey()
val (command, state) = tradeRequest.assetForSale.state.withNewOwner(freshKey.public)
ptx.addOutputState(state)