error 0
 crypto_stream_xor does not match crypto_stream
 ==30209== Memcheck, a memory error detector
 ==30209== Copyright (C) 2002-2017, and GNU GPL'd, by Julian Seward et al.
 ==30209== Using Valgrind-3.15.0.GIT and LibVEX; rerun with -h for copyright info
 ==30209== Command: ./try
 ==30209==
 ==30209==
 ==30209== HEAP SUMMARY:
 ==30209==     in use at exit: 43,520 bytes in 10 blocks
 ==30209==   total heap usage: 16 allocs, 6 frees, 57,464 bytes allocated
 ==30209==
 ==30209== LEAK SUMMARY:
 ==30209==    definitely lost: 0 bytes in 0 blocks
 ==30209==    indirectly lost: 0 bytes in 0 blocks
 ==30209==      possibly lost: 43,520 bytes in 10 blocks
 ==30209==    still reachable: 0 bytes in 0 blocks
 ==30209==         suppressed: 0 bytes in 0 blocks
 ==30209== Rerun with --leak-check=full to see details of leaked memory
 ==30209==
 ==30209== For lists of detected and suppressed errors, rerun with: -s
 ==30209== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 0 from 0)