What is the difference between hashing and encryption in C++11?

Can you explain the difference between hashing and encryption in C++11?

Sure! Hashing is a one-way function that converts data into a fixed-size string of characters, which is typically a hash code. It's used for data integrity, like verifying passwords. Encryption, on the other hand, is a two-way function that transforms data into a format that can only be read by someone with the correct decryption key. It's used for data confidentiality.

Can you give me examples of hashing and encryption functions in C++11?

Absolutely! For hashing, you can use the std::hash function for basic hashing. For encryption, you might use libraries like OpenSSL to implement AES encryption. Would you like code snippets for these?

Yes, please provide code snippets for both!

Here's a simple example of hashing using std::hash:

#include <iostream>
#include <functional>

int main() {
    std::string data = "Hello, World!";
    std::size_t hash = std::hash<std::string>{}(data);
    std::cout << "Hash: " << hash << std::endl;
}

And for AES encryption using OpenSSL:

#include <openssl/aes.h>
// Include other necessary headers and implement AES encryption here.