Reserve proof

3 files changed, 57 insertions, 0 deletions

diff --git a/src/wallet/api/wallet.cpp b/src/wallet/api/wallet.cpp
index fd0b65866..f96640d6e 100644
--- a/src/wallet/api/wallet.cpp
+++ b/src/wallet/api/wallet.cpp
@@ -1576,6 +1576,55 @@ bool WalletImpl::checkSpendProof(const std::string &txid_str, const std::string
     }
 }
 
+std::string WalletImpl::getReserveProof(bool all, uint32_t account_index, uint64_t amount, const std::string &message) const {
+    try
+    {
+        m_status = Status_Ok;
+        boost::optional<std::pair<uint32_t, uint64_t>> account_minreserve;
+        if (!all)
+        {
+            account_minreserve = std::make_pair(account_index, amount);
+        }
+        return m_wallet->get_reserve_proof(account_minreserve, message);
+    }
+    catch (const std::exception &e)
+    {
+        m_status = Status_Error;
+        m_errorString = e.what();
+        return "";
+    }
+}
+
+bool WalletImpl::checkReserveProof(const std::string &address, const std::string &message, const std::string &signature, bool &good, uint64_t &total, uint64_t &spent) const {
+    cryptonote::address_parse_info info;
+    if (!cryptonote::get_account_address_from_str(info, m_wallet->testnet(), address))
+    {
+        m_status = Status_Error;
+        m_errorString = tr("Failed to parse address");
+        return false;
+    }
+    if (info.is_subaddress)
+    {
+        m_status = Status_Error;
+        m_errorString = tr("Address must not be a subaddress");
+        return false;
+    }
+
+    good = false;
+    try
+    {
+        m_status = Status_Ok;
+        good = m_wallet->check_reserve_proof(info.address, message, signature, total, spent);
+        return true;
+    }
+    catch (const std::exception &e)
+    {
+        m_status = Status_Error;
+        m_errorString = e.what();
+        return false;
+    }
+}
+
 std::string WalletImpl::signMessage(const std::string &message)
 {
   return m_wallet->sign(message);
diff --git a/src/wallet/api/wallet.h b/src/wallet/api/wallet.h
index 01359ffc6..0b9fc851b 100644
--- a/src/wallet/api/wallet.h
+++ b/src/wallet/api/wallet.h
@@ -142,6 +142,8 @@ public:
     virtual bool checkTxProof(const std::string &txid, const std::string &address, const std::string &message, const std::string &signature, bool &good, uint64_t &received, bool &in_pool, uint64_t &confirmations);
     virtual std::string getSpendProof(const std::string &txid, const std::string &message) const;
     virtual bool checkSpendProof(const std::string &txid, const std::string &message, const std::string &signature, bool &good) const;
+    virtual std::string getReserveProof(bool all, uint32_t account_index, uint64_t amount, const std::string &message) const;
+    virtual bool checkReserveProof(const std::string &address, const std::string &message, const std::string &signature, bool &good, uint64_t &total, uint64_t &spent) const;
     virtual std::string signMessage(const std::string &message);
     virtual bool verifySignedMessage(const std::string &message, const std::string &address, const std::string &signature) const;
     virtual void startRefresh();
diff --git a/src/wallet/api/wallet2_api.h b/src/wallet/api/wallet2_api.h
index ab1a48d6e..acecbb9dd 100644
--- a/src/wallet/api/wallet2_api.h
+++ b/src/wallet/api/wallet2_api.h
@@ -706,6 +706,12 @@ struct Wallet
     virtual bool checkTxProof(const std::string &txid, const std::string &address, const std::string &message, const std::string &signature, bool &good, uint64_t &received, bool &in_pool, uint64_t &confirmations) = 0;
     virtual std::string getSpendProof(const std::string &txid, const std::string &message) const = 0;
     virtual bool checkSpendProof(const std::string &txid, const std::string &message, const std::string &signature, bool &good) const = 0;
+    /*!
+     * \brief getReserveProof - Generates a proof that proves the reserve of unspent funds
+     *                          Parameters `account_index` and `amount` are ignored when `all` is true
+     */
+    virtual std::string getReserveProof(bool all, uint32_t account_index, uint64_t amount, const std::string &message) const = 0;
+    virtual bool checkReserveProof(const std::string &address, const std::string &message, const std::string &signature, bool &good, uint64_t &total, uint64_t &spent) const = 0;
 
     /*
      * \brief signMessage - sign a message with the spend private key