error 0
 crypto_stream_xor does not match crypto_stream
 ==30168== Memcheck, a memory error detector
 ==30168== Copyright (C) 2002-2017, and GNU GPL'd, by Julian Seward et al.
 ==30168== Using Valgrind-3.15.0.GIT and LibVEX; rerun with -h for copyright info
 ==30168== Command: ./try
 ==30168==
 ==30168==
 ==30168== HEAP SUMMARY:
 ==30168==     in use at exit: 43,520 bytes in 10 blocks
 ==30168==   total heap usage: 16 allocs, 6 frees, 57,464 bytes allocated
 ==30168==
 ==30168== LEAK SUMMARY:
 ==30168==    definitely lost: 0 bytes in 0 blocks
 ==30168==    indirectly lost: 0 bytes in 0 blocks
 ==30168==      possibly lost: 43,520 bytes in 10 blocks
 ==30168==    still reachable: 0 bytes in 0 blocks
 ==30168==         suppressed: 0 bytes in 0 blocks
 ==30168== Rerun with --leak-check=full to see details of leaked memory
 ==30168==
 ==30168== For lists of detected and suppressed errors, rerun with: -s
 ==30168== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 0 from 0)