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Use boost::variant to represent shielded addresses and keys

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libzcash::PaymentAddress has been renamed to libzcash::SproutPaymentAddress,
and a new typedef boost::variant is now libzcash::PaymentAddress. Similarly
for ViewingKey and SpendingKey.

A new class InvalidEncoding is introduced as the default boost::variant
option for each address and key type; it is used during decoding instead
of boost::optional.

All address and key storage functions in the wallet have been modified to
refer specifically to the Sprout types, as they are used very precisely.
In most other cases, the more general type is leveraged as much as possible,
and we convert to the Sprout type when necessary. This will be subsequently
wrapped in, or replaced with, context-specific functions once Sapling
types are implemented.
This commit is contained in:
Jack Grigg
2018-04-26 02:51:17 +01:00
parent 1942f7a42b
commit e5eab182b5
40 changed files with 488 additions and 336 deletions
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10
src/wallet/asyncrpcoperation_shieldcoinbase.cpp
View File

@@ -73,8 +73,10 @@ AsyncRPCOperation_shieldcoinbase::AsyncRPCOperation_shieldcoinbase(
// Check the destination address is valid for this network i.e. not testnet being used on mainnet
auto address = DecodePaymentAddress(toAddress);
if (address) {
tozaddr_ = *address;
if (IsValidPaymentAddress(address)) {
// TODO: Add Sapling support. For now, ensure we can freely convert.
assert(boost::get<libzcash::SproutPaymentAddress>(&address) != nullptr);
tozaddr_ = address;
} else {
throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Invalid to address");
}
@@ -233,7 +235,7 @@ bool AsyncRPCOperation_shieldcoinbase::main_impl() {
ShieldCoinbaseJSInfo info;
info.vpub_old = sendAmount;
info.vpub_new = 0;
JSOutput jso = JSOutput(tozaddr_, sendAmount);
JSOutput jso = JSOutput(boost::get<libzcash::SproutPaymentAddress>(tozaddr_), sendAmount);
info.vjsout.push_back(jso);
obj = perform_joinsplit(info);
@@ -448,7 +450,7 @@ UniValue AsyncRPCOperation_shieldcoinbase::perform_joinsplit(ShieldCoinbaseJSInf
// placeholder for txid will be filled in later when tx has been finalized and signed.
PaymentDisclosureKey pdKey = {placeholder, js_index, mapped_index};
JSOutput output = outputs[mapped_index];
libzcash::PaymentAddress zaddr = output.addr; // randomized output
libzcash::SproutPaymentAddress zaddr = output.addr; // randomized output
PaymentDisclosureInfo pdInfo = {PAYMENT_DISCLOSURE_VERSION_EXPERIMENTAL, esk, joinSplitPrivKey, zaddr};
paymentDisclosureData_.push_back(PaymentDisclosureKeyInfo(pdKey, pdInfo));