diff --git a/src/Functions/FileEncryption.h b/src/Functions/FileEncryption.h
index 3830e90bff5..fa056c9386e 100644
--- a/src/Functions/FileEncryption.h
+++ b/src/Functions/FileEncryption.h
@@ -38,10 +38,10 @@ class InitVector
 public:
     InitVector(String iv_) : iv(FromBigEndianString(iv_)) { }
 
-    const char * GetRef() const
+    const String & GetRef() const
     {
         local = ToBigEndianString(iv + counter);
-        return local.data();
+        return local;
     }
 
     void Inc() { ++counter; }
@@ -75,7 +75,7 @@ class EncryptionKey
 public:
     EncryptionKey(String key_) : key(key_) { }
     size_t Size() const { return key.size(); }
-    const char * GetRef() const { return key.data(); }
+    const String & GetRef() const { return key; }
 
 private:
     String key;
@@ -238,8 +238,8 @@ private:
             throw DB::Exception("Failed to initialize encryption context with cipher", DB::ErrorCodes::DATA_ENCRYPTION_ERROR);
 
         if (EVP_EncryptInit_ex(evp_ctx, nullptr, nullptr,
-            reinterpret_cast<const unsigned char*>(key.GetRef()),
-            reinterpret_cast<const unsigned char*>(iv.GetRef())) != 1)
+            reinterpret_cast<const unsigned char*>(key.GetRef().data()),
+            reinterpret_cast<const unsigned char*>(iv.GetRef().data())) != 1)
             throw DB::Exception("Failed to set key and IV for encryption", DB::ErrorCodes::DATA_ENCRYPTION_ERROR);
 
         int output_len = 0;
@@ -319,8 +319,8 @@ private:
             throw DB::Exception("Failed to initialize decryption context with cipher", DB::ErrorCodes::DATA_ENCRYPTION_ERROR);
 
         if (EVP_DecryptInit_ex(evp_ctx, nullptr, nullptr,
-            reinterpret_cast<const unsigned char*>(key.GetRef()),
-            reinterpret_cast<const unsigned char*>(iv.GetRef())) != 1)
+            reinterpret_cast<const unsigned char*>(key.GetRef().data()),
+            reinterpret_cast<const unsigned char*>(iv.GetRef().data())) != 1)
             throw DB::Exception("Failed to set key and IV for decryption", DB::ErrorCodes::DATA_ENCRYPTION_ERROR);
 
         int output_len = 0;
diff --git a/src/Functions/tests/gtest_file_encryption.cpp b/src/Functions/tests/gtest_file_encryption.cpp
index 965099fe999..79f03b1f405 100644
--- a/src/Functions/tests/gtest_file_encryption.cpp
+++ b/src/Functions/tests/gtest_file_encryption.cpp
@@ -1,3 +1,7 @@
+#if !defined(ARCADIA_BUILD)
+#include <Common/config.h>
+#endif
+
 #if USE_SSL
 #include <gtest/gtest.h>
 #include <IO/WriteBufferFromString.h>
@@ -76,16 +80,16 @@ INSTANTIATE_TEST_SUITE_P(InitVectorInputs,
             1024,
             string_ends_with(16, "\x1"),
             string_ends_with(16, "\x56"),
-            string_ends_with(16, "\x4\0"),
+            string_ends_with(16, String("\x4\0", 2)),
         },
         {
             "Long init vector test",
             "\xa8\x65\x9c\x73\xf8\x5d\x83\xb4\x5c\xa6\x8c\x19\xf4\x77\x80\xe1",
-            UInt128(3349249125638641) * 1815701,
+            3349249125638641,
             1698923461902341,
             "\xa8\x65\x9c\x73\xf8\x5d\x83\xb4\x5c\xa6\x8c\x19\xf4\x77\x80\xe2",
-            "\xa8\x65\x9c\x73\xf8\x5d\x84\xfe\x06\xbd\x44\xb7\x0b\x0c\x76\x27",
-            "\xa8\x65\x9c\x73\xf8\x5d\x83\xb4\x5c\xac\x95\x43\x65\xea\x00\xe6",
+            "\xa8\x65\x9c\x73\xf8\x5d\x83\xb4\x5c\xb2\x72\x39\xc8\xdd\x62\xd3",
+            String("\xa8\x65\x9c\x73\xf8\x5d\x83\xb4\x5c\xac\x95\x43\x65\xea\x00\xe6", 16)
         },
     })
 );