change SSL certificate fingerprint whitelisting from SHA1 to SHA-256

SHA1 is too close to bruteforceable

2 files changed, 15 insertions, 0 deletions

diff --git a/src/wallet/wallet2.cpp b/src/wallet/wallet2.cpp
index 6554ef7d5..4abf5096f 100644
--- a/src/wallet/wallet2.cpp
+++ b/src/wallet/wallet2.cpp
@@ -39,6 +39,7 @@
 #include <boost/algorithm/string/join.hpp>
 #include <boost/asio/ip/address.hpp>
 #include <boost/range/adaptor/transformed.hpp>
+#include <boost/preprocessor/stringize.hpp>
 #include "include_base_utils.h"
 using namespace epee;
 
@@ -340,6 +341,11 @@ std::unique_ptr<tools::wallet2> make_basic(const boost::program_options::variabl
   {
     std::vector<std::vector<uint8_t>> ssl_allowed_fingerprints{ daemon_ssl_allowed_fingerprints.size() };
     std::transform(daemon_ssl_allowed_fingerprints.begin(), daemon_ssl_allowed_fingerprints.end(), ssl_allowed_fingerprints.begin(), epee::from_hex::vector);
+    for (const auto &fpr: daemon_ssl_allowed_fingerprints)
+    {
+      THROW_WALLET_EXCEPTION_IF(fpr.size() != SSL_FINGERPRINT_SIZE, tools::error::wallet_internal_error,
+          "SHA-256 fingerprint should be " BOOST_PP_STRINGIZE(SSL_FINGERPRINT_SIZE) " bytes long.");
+    }
 
     ssl_options = epee::net_utils::ssl_options_t{
       std::move(ssl_allowed_fingerprints), std::move(daemon_ssl_ca_file)
diff --git a/src/wallet/wallet_rpc_server.cpp b/src/wallet/wallet_rpc_server.cpp
index 4076ae957..a6f37784d 100644
--- a/src/wallet/wallet_rpc_server.cpp
+++ b/src/wallet/wallet_rpc_server.cpp
@@ -31,6 +31,7 @@
 #include <boost/asio/ip/address.hpp>
 #include <boost/filesystem/operations.hpp>
 #include <boost/algorithm/string.hpp>
+#include <boost/preprocessor/stringize.hpp>
 #include <cstdint>
 #include "include_base_utils.h"
 using namespace epee;
@@ -254,6 +255,14 @@ namespace tools
     {
       std::vector<std::vector<uint8_t>> allowed_fingerprints{ rpc_ssl_allowed_fingerprints.size() };
       std::transform(rpc_ssl_allowed_fingerprints.begin(), rpc_ssl_allowed_fingerprints.end(), allowed_fingerprints.begin(), epee::from_hex::vector);
+      for (const auto &fpr: rpc_ssl_allowed_fingerprints)
+      {
+        if (fpr.size() != SSL_FINGERPRINT_SIZE)
+        {
+          MERROR("SHA-256 fingerprint should be " BOOST_PP_STRINGIZE(SSL_FINGERPRINT_SIZE) " bytes long.");
+          return false;
+        }
+      }
 
       rpc_ssl_options = epee::net_utils::ssl_options_t{
         std::move(allowed_fingerprints), std::move(rpc_ssl_ca_file)