How to hash a string using SHA-512 in Go?

To hash a string using SHA-512 in Go, you can use the crypto/sha512 package provided by the Go standard library. Here's an example code snippet that demonstrates how you can do it:

package main

import (
	"crypto/sha512"
	"encoding/hex"
	"fmt"
)

func main() {
	str := "Hello, World!"

	// Create a new SHA-512 hash object
	hash := sha512.New()

	// Write the string to the hash object
	hash.Write([]byte(str))

	// Calculate the hash sum
	hashSum := hash.Sum(nil)

	// Convert the hash sum to a hexadecimal string
	hashStr := hex.EncodeToString(hashSum)

	fmt.Println("Original String:", str)
	fmt.Println("SHA-512 Hash:", hashStr)
}

In this example, we import the crypto/sha512 package to access the SHA-512 hashing algorithm. We create a new hash object using sha512.New(), then write the string to the hash object using hash.Write(). Next, we calculate the hash sum by calling hash.Sum(nil). Finally, we convert the hash sum to a hexadecimal string using hex.EncodeToString(). The result prints out the original string and its corresponding SHA-512 hash.