Code modifications to integrate Ledger HW device into monero-wallet-cli.

The basic approach it to delegate all sensitive data (master key, secret
ephemeral key, key derivation, ....) and related operations to the device.
As device has low memory, it does not keep itself the values
(except for view/spend keys) but once computed there are encrypted (with AES
are equivalent) and return back to monero-wallet-cli. When they need to be
manipulated by the device, they are decrypted on receive.

Moreover, using the client for storing the value in encrypted form limits
the modification in the client code. Those values are transfered from one
C-structure to another one as previously.

The code modification has been done with the wishes to be open to any
other hardware wallet. To achieve that a C++ class hw::Device has been
introduced. Two initial implementations are provided: the "default", which
remaps all calls to initial Monero code, and  the "Ledger", which delegates
all calls to Ledger device.

2 files changed, 9 insertions, 6 deletions

diff --git a/tests/crypto/CMakeLists.txt b/tests/crypto/CMakeLists.txt
index df96c57cc..c89049d50 100644
--- a/tests/crypto/CMakeLists.txt
+++ b/tests/crypto/CMakeLists.txt
@@ -42,7 +42,10 @@ add_executable(cncrypto-tests
   ${crypto_headers})
 target_link_libraries(cncrypto-tests
   PRIVATE
+    wallet
+    cryptonote_core
     common
+    device
     ${Boost_SYSTEM_LIBRARY}
     ${EXTRA_LIBRARIES})
 set_property(TARGET cncrypto-tests
diff --git a/tests/crypto/crypto.cpp b/tests/crypto/crypto.cpp
index 6a1dd1b29..90212bd0b 100644
--- a/tests/crypto/crypto.cpp
+++ b/tests/crypto/crypto.cpp
@@ -33,7 +33,7 @@
 #include "crypto-tests.h"
 
 bool check_scalar(const crypto::ec_scalar &scalar) {
-  return crypto::sc_check(crypto::operator &(scalar)) == 0;
+  return sc_check(crypto::operator &(scalar)) == 0;
 }
 
 void random_scalar(crypto::ec_scalar &res) {
@@ -45,13 +45,13 @@ void hash_to_scalar(const void *data, std::size_t length, crypto::ec_scalar &res
 }
 
 void hash_to_point(const crypto::hash &h, crypto::ec_point &res) {
-  crypto::ge_p2 point;
-  crypto::ge_fromfe_frombytes_vartime(&point, reinterpret_cast<const unsigned char *>(&h));
-  crypto::ge_tobytes(crypto::operator &(res), &point);
+  ge_p2 point;
+  ge_fromfe_frombytes_vartime(&point, reinterpret_cast<const unsigned char *>(&h));
+  ge_tobytes(crypto::operator &(res), &point);
 }
 
 void hash_to_ec(const crypto::public_key &key, crypto::ec_point &res) {
-  crypto::ge_p3 tmp;
+  ge_p3 tmp;
   crypto::hash_to_ec(key, tmp);
-  crypto::ge_p3_tobytes(crypto::operator &(res), &tmp);
+  ge_p3_tobytes(crypto::operator &(res), &tmp);
 }