diff --git a/src/wallet/wallet2.cpp b/src/wallet/wallet2.cpp
index 14e7368a0..2d88ef06a 100644
--- a/src/wallet/wallet2.cpp
+++ b/src/wallet/wallet2.cpp
@@ -2378,7 +2378,7 @@ bool wallet2::store_keys(const std::string& keys_file_name, const epee::wipeable
   std::string cipher;
   cipher.resize(account_data.size());
   keys_file_data.iv = crypto::rand<crypto::chacha_iv>();
-  crypto::chacha8(account_data.data(), account_data.size(), key, keys_file_data.iv, &cipher[0]);
+  crypto::chacha20(account_data.data(), account_data.size(), key, keys_file_data.iv, &cipher[0]);
   keys_file_data.account_data = cipher;
 
   std::string buf;
@@ -2406,6 +2406,7 @@ namespace
  */
 bool wallet2::load_keys(const std::string& keys_file_name, const epee::wipeable_string& password)
 {
+  rapidjson::Document json;
   wallet2::keys_file_data keys_file_data;
   std::string buf;
   bool r = epee::file_io_utils::load_file_to_string(keys_file_name, buf);
@@ -2418,10 +2419,11 @@ bool wallet2::load_keys(const std::string& keys_file_name, const epee::wipeable_
   crypto::generate_chacha_key(password.data(), password.size(), key);
   std::string account_data;
   account_data.resize(keys_file_data.account_data.size());
-  crypto::chacha8(keys_file_data.account_data.data(), keys_file_data.account_data.size(), key, keys_file_data.iv, &account_data[0]);
+  crypto::chacha20(keys_file_data.account_data.data(), keys_file_data.account_data.size(), key, keys_file_data.iv, &account_data[0]);
+  if (json.Parse(account_data.c_str()).HasParseError() || !json.IsObject())
+    crypto::chacha8(keys_file_data.account_data.data(), keys_file_data.account_data.size(), key, keys_file_data.iv, &account_data[0]);
 
   // The contents should be JSON if the wallet follows the new format.
-  rapidjson::Document json;
   if (json.Parse(account_data.c_str()).HasParseError())
   {
     is_old_file_format = true;
@@ -2591,6 +2593,7 @@ bool wallet2::verify_password(const epee::wipeable_string& password) const
  */
 bool wallet2::verify_password(const std::string& keys_file_name, const epee::wipeable_string& password, bool no_spend_key)
 {
+  rapidjson::Document json;
   wallet2::keys_file_data keys_file_data;
   std::string buf;
   bool r = epee::file_io_utils::load_file_to_string(keys_file_name, buf);
@@ -2603,10 +2606,11 @@ bool wallet2::verify_password(const std::string& keys_file_name, const epee::wip
   crypto::generate_chacha_key(password.data(), password.size(), key);
   std::string account_data;
   account_data.resize(keys_file_data.account_data.size());
-  crypto::chacha8(keys_file_data.account_data.data(), keys_file_data.account_data.size(), key, keys_file_data.iv, &account_data[0]);
+  crypto::chacha20(keys_file_data.account_data.data(), keys_file_data.account_data.size(), key, keys_file_data.iv, &account_data[0]);
+  if (json.Parse(account_data.c_str()).HasParseError() || !json.IsObject())
+    crypto::chacha8(keys_file_data.account_data.data(), keys_file_data.account_data.size(), key, keys_file_data.iv, &account_data[0]);
 
   // The contents should be JSON if the wallet follows the new format.
-  rapidjson::Document json;
   if (json.Parse(account_data.c_str()).HasParseError())
   {
     // old format before JSON wallet key file format
@@ -3345,30 +3349,42 @@ void wallet2::load(const std::string& wallet_, const epee::wipeable_string& pass
       generate_chacha_key_from_secret_keys(key);
       std::string cache_data;
       cache_data.resize(cache_file_data.cache_data.size());
-      crypto::chacha8(cache_file_data.cache_data.data(), cache_file_data.cache_data.size(), key, cache_file_data.iv, &cache_data[0]);
+      crypto::chacha20(cache_file_data.cache_data.data(), cache_file_data.cache_data.size(), key, cache_file_data.iv, &cache_data[0]);
 
-      std::stringstream iss;
-      iss << cache_data;
       try {
+        std::stringstream iss;
+        iss << cache_data;
         boost::archive::portable_binary_iarchive ar(iss);
         ar >> *this;
       }
       catch (...)
       {
-        LOG_PRINT_L0("Failed to open portable binary, trying unportable");
-        boost::filesystem::copy_file(m_wallet_file, m_wallet_file + ".unportable", boost::filesystem::copy_option::overwrite_if_exists);
-        iss.str("");
-        iss << cache_data;
-        boost::archive::binary_iarchive ar(iss);
-        ar >> *this;
+        crypto::chacha8(cache_file_data.cache_data.data(), cache_file_data.cache_data.size(), key, cache_file_data.iv, &cache_data[0]);
+        try
+        {
+          std::stringstream iss;
+          iss << cache_data;
+          boost::archive::portable_binary_iarchive ar(iss);
+          ar >> *this;
+        }
+        catch (...)
+        {
+          LOG_PRINT_L0("Failed to open portable binary, trying unportable");
+          boost::filesystem::copy_file(m_wallet_file, m_wallet_file + ".unportable", boost::filesystem::copy_option::overwrite_if_exists);
+          std::stringstream iss;
+          iss.str("");
+          iss << cache_data;
+          boost::archive::binary_iarchive ar(iss);
+          ar >> *this;
+        }
       }
     }
     catch (...)
     {
       LOG_PRINT_L1("Failed to load encrypted cache, trying unencrypted");
-      std::stringstream iss;
-      iss << buf;
       try {
+        std::stringstream iss;
+        iss << buf;
         boost::archive::portable_binary_iarchive ar(iss);
         ar >> *this;
       }
@@ -3376,6 +3392,7 @@ void wallet2::load(const std::string& wallet_, const epee::wipeable_string& pass
       {
         LOG_PRINT_L0("Failed to open portable binary, trying unportable");
         boost::filesystem::copy_file(m_wallet_file, m_wallet_file + ".unportable", boost::filesystem::copy_option::overwrite_if_exists);
+        std::stringstream iss;
         iss.str("");
         iss << buf;
         boost::archive::binary_iarchive ar(iss);
@@ -3505,7 +3522,7 @@ void wallet2::store_to(const std::string &path, const epee::wipeable_string &pas
   std::string cipher;
   cipher.resize(cache_file_data.cache_data.size());
   cache_file_data.iv = crypto::rand<crypto::chacha_iv>();
-  crypto::chacha8(cache_file_data.cache_data.data(), cache_file_data.cache_data.size(), key, cache_file_data.iv, &cipher[0]);
+  crypto::chacha20(cache_file_data.cache_data.data(), cache_file_data.cache_data.size(), key, cache_file_data.iv, &cipher[0]);
   cache_file_data.cache_data = cipher;
 
   const std::string new_file = same_file ? m_wallet_file + ".new" : path;
@@ -8725,7 +8742,7 @@ std::string wallet2::encrypt(const std::string &plaintext, const crypto::secret_
   std::string ciphertext;
   crypto::chacha_iv iv = crypto::rand<crypto::chacha_iv>();
   ciphertext.resize(plaintext.size() + sizeof(iv) + (authenticated ? sizeof(crypto::signature) : 0));
-  crypto::chacha8(plaintext.data(), plaintext.size(), key, iv, &ciphertext[sizeof(iv)]);
+  crypto::chacha20(plaintext.data(), plaintext.size(), key, iv, &ciphertext[sizeof(iv)]);
   memcpy(&ciphertext[0], &iv, sizeof(iv));
   if (authenticated)
   {
@@ -8765,7 +8782,7 @@ std::string wallet2::decrypt(const std::string &ciphertext, const crypto::secret
     THROW_WALLET_EXCEPTION_IF(!crypto::check_signature(hash, pkey, signature),
       error::wallet_internal_error, "Failed to authenticate ciphertext");
   }
-  crypto::chacha8(ciphertext.data() + sizeof(iv), ciphertext.size() - prefix_size, key, iv, &plaintext[0]);
+  crypto::chacha20(ciphertext.data() + sizeof(iv), ciphertext.size() - prefix_size, key, iv, &plaintext[0]);
   return plaintext;
 }
 //----------------------------------------------------------------------------------------------------