I would like to print the following hashed data. How should I do it?
unsigned char hashedChars[32];
SHA256((const unsigned char*)data.c_str(),
data.length(),
hashedChars);
printf("hashedChars: %X\n", hashedChars); // doesn't seem to work??
The hex format specifier is expecting a single integer value but you're providing instead an array of char
. What you need to do is print out the char
values individually as hex values.
printf("hashedChars: ");
for (int i = 0; i < 32; i++) {
printf("%x", hashedChars[i]);
}
printf("\n");
Since you are using C++ though you should consider using cout
instead of printf
(it's more idiomatic for C++.
cout << "hashedChars: ";
for (int i = 0; i < 32; i++) {
cout << hex << hashedChars[i];
}
cout << endl;