4 files changed, 152 insertions, 0 deletions
diff --git a/src/crypto/CMakeLists.txt b/src/crypto/CMakeLists.txt
index 318e6dc57..3b33fe90a 100644
--- a/src/crypto/CMakeLists.txt
+++ b/src/crypto/CMakeLists.txt
@@ -116,3 +116,6 @@ endif()
 
 # cheat because cmake and ccache hate each other
 set_property(SOURCE CryptonightR_template.S PROPERTY LANGUAGE C)
+
+# Must be done last, because it references libraries in this directory
+add_subdirectory(wallet)
diff --git a/src/crypto/wallet/CMakeLists.txt b/src/crypto/wallet/CMakeLists.txt
new file mode 100644
index 000000000..4ed986dce
--- /dev/null
+++ b/src/crypto/wallet/CMakeLists.txt
@@ -0,0 +1,62 @@
+# Copyright (c) 2020, The Monero Project
+#
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without modification, are
+# permitted provided that the following conditions are met:
+#
+# 1. Redistributions of source code must retain the above copyright notice, this list of
+#    conditions and the following disclaimer.
+#
+# 2. Redistributions in binary form must reproduce the above copyright notice, this list
+#    of conditions and the following disclaimer in the documentation and/or other
+#    materials provided with the distribution.
+#
+# 3. Neither the name of the copyright holder nor the names of its contributors may be
+#    used to endorse or promote products derived from this software without specific
+#    prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
+# EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
+# THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+# STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+# THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#
+# Possibly user defined values.
+#
+set(MONERO_WALLET_CRYPTO_LIBRARY "auto" CACHE STRING "Select a wallet crypto library")
+
+#
+# If the user specified "auto", detect best library defaulting to internal.
+#
+if (${MONERO_WALLET_CRYPTO_LIBRARY} STREQUAL "auto")
+   monero_crypto_autodetect(AVAILABLE BEST)
+  if (DEFINED BEST)
+    message("Wallet crypto is using ${BEST} backend")
+    set(MONERO_WALLET_CRYPTO_LIBRARY ${BEST})
+  else ()
+    message("Defaulting to internal crypto library for wallet")
+    set(MONERO_WALLET_CRYPTO_LIBRARY "cn")
+  endif ()
+endif ()
+
+#
+# Configure library target "wallet-crypto" - clients will use this as a
+# library dependency which in turn will depend on the crypto library selected.
+#
+if (${MONERO_WALLET_CRYPTO_LIBRARY} STREQUAL "cn")
+  configure_file(${CMAKE_CURRENT_SOURCE_DIR}/empty.h.in ${MONERO_GENERATED_HEADERS_DIR}/crypto/wallet/ops.h)
+  add_library(wallet-crypto ALIAS cncrypto)
+else ()
+  monero_crypto_generate_header(${MONERO_WALLET_CRYPTO_LIBRARY} "${MONERO_GENERATED_HEADERS_DIR}/crypto/wallet/ops.h")
+  monero_crypto_get_target(${MONERO_WALLET_CRYPTO_LIBRARY} CRYPTO_TARGET)
+  add_library(wallet-crypto $<TARGET_OBJECTS:${CRYPTO_TARGET}>)
+  target_link_libraries(wallet-crypto cncrypto)
+endif ()
+
+
diff --git a/src/crypto/wallet/crypto.h b/src/crypto/wallet/crypto.h
new file mode 100644
index 000000000..a4c5d5a07
--- /dev/null
+++ b/src/crypto/wallet/crypto.h
@@ -0,0 +1,56 @@
+// Copyright (c) 2020, The Monero Project
+//
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without modification, are
+// permitted provided that the following conditions are met:
+//
+// 1. Redistributions of source code must retain the above copyright notice, this list of
+//    conditions and the following disclaimer.
+//
+// 2. Redistributions in binary form must reproduce the above copyright notice, this list
+//    of conditions and the following disclaimer in the documentation and/or other
+//    materials provided with the distribution.
+//
+// 3. Neither the name of the copyright holder nor the names of its contributors may be
+//    used to endorse or promote products derived from this software without specific
+//    prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
+// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
+// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#pragma once
+
+#include <cstddef>
+#include "crypto/wallet/ops.h"
+
+namespace crypto {
+  namespace wallet {
+// if C functions defined from external/supercop - cmake generates crypto/wallet/ops.h
+#if defined(monero_crypto_generate_key_derivation)
+      inline
+      bool generate_key_derivation(const public_key &tx_pub, const secret_key &view_sec, key_derivation &out)
+      {
+        return monero_crypto_generate_key_derivation(out.data, tx_pub.data, view_sec.data) == 0;
+      }
+
+      inline
+      bool derive_subaddress_public_key(const public_key &output_pub, const key_derivation &d, std::size_t index, public_key &out)
+      {
+        ec_scalar scalar;
+        derivation_to_scalar(d, index, scalar);
+        return monero_crypto_generate_subaddress_public_key(out.data, output_pub.data, scalar.data) == 0;
+      }
+#else
+    using ::crypto::generate_key_derivation;
+    using ::crypto::derive_subaddress_public_key;
+#endif
+  }
+}
diff --git a/src/crypto/wallet/empty.h.in b/src/crypto/wallet/empty.h.in
new file mode 100644
index 000000000..ac252e1bd
--- /dev/null
+++ b/src/crypto/wallet/empty.h.in
@@ -0,0 +1,31 @@
+// Copyright (c) 2020, The Monero Project
+//
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without modification, are
+// permitted provided that the following conditions are met:
+//
+// 1. Redistributions of source code must retain the above copyright notice, this list of
+//    conditions and the following disclaimer.
+//
+// 2. Redistributions in binary form must reproduce the above copyright notice, this list
+//    of conditions and the following disclaimer in the documentation and/or other
+//    materials provided with the distribution.
+//
+// 3. Neither the name of the copyright holder nor the names of its contributors may be
+//    used to endorse or promote products derived from this software without specific
+//    prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
+// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
+// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#pragma once
+
+// Left empty so internal cryptonote crypto library is used.