test.cpp:8:21: error: cannot initialize an array element of type 'uint8_t *' (aka 'unsigned char *') with an lvalue of type 'const char[21]'
        uint8_t* keys[] = {"12345678901234567890"};
                           ^~~~~~~~~~~~~~~~~~~~~~
test.cpp:15:29: error: invalid application of 'sizeof' to an incomplete type 'uint8_t *[]'
        uint32_t solutions[][sizeof(keys) / sizeof(keys[0])] =
                                   ^~~~~~
test.cpp:24:28: error: invalid application of 'sizeof' to an incomplete type 'uint8_t *[]'
        for (int i = 0; i < sizeof(keys) / sizeof(keys[0]); ++i)
                                  ^~~~~~
test.cpp:28:34: error: no matching function for call to 'strlen'
                        int32_t token = totp(keys[i], strlen(keys[i]), times[j], 8);
                                                      ^~~~~~
/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/string.h:82:9: note: candidate function not viable: no known conversion from 'uint8_t *' (aka 'unsigned char *') to 'const char *' for 1st argument
size_t   strlen(const char *__s);