How to Hash and Salt Passwords in Golang Using SHA-512 and Why You Shouldnt

package mainimport (  "crypto/rand"  "crypto/sha512"  "encoding/hex"  "fmt")// Define salt sizeconst saltSize = 16// Generate 16 bytes randomly and securely using the// Cryptographically secure pseudorandom number generator (CSPRNG)// in the crypto.rand packagefunc generateRandomSalt(saltSize int) []byte {  var salt = make([]byte, saltSize)  _, err := rand.Read(salt[:])  if err != nil {    panic(err)  }  return salt}// Combine password and salt then hash them using the SHA-512// hashing algorithm and then return the hashed password// as a hex stringfunc hashPassword(password string, salt []byte) string {  // Convert password string to byte slice  var passwordBytes = []byte(password)  // Create sha-512 hasher  var sha512Hasher = sha512.New()  // Append salt to password  passwordBytes = append(passwordBytes, salt...)  // Write password bytes to the hasher  sha512Hasher.Write(passwordBytes)  // Get the SHA-512 hashed password  var hashedPasswordBytes = sha512Hasher.Sum(nil)  // Convert the hashed password to a hex string  var hashedPasswordHex = hex.EncodeToString(hashedPasswordBytes)  return hashedPasswordHex}// Check if two passwords matchfunc doPasswordsMatch(hashedPassword, currPassword string,    salt []byte) bool {  var currPasswordHash = hashPassword(currPassword, salt)  return hashedPassword == currPasswordHash}func main() {  // Generate random 16 byte salt  var salt = generateRandomSalt(saltSize)  // Hash password using the salt  var hashedPassword = hashPassword("hello", salt)  fmt.Println("Password Hash:", hashedPassword)  fmt.Println("Salt:", salt)  // Check if passed password matches the original password by hashing it  // with the original password's salt and check if the hashes match  fmt.Println("Password Match:",        doPasswordsMatch(hashedPassword, "hello", salt))}

Password Hash: c7b714330211d3eddd0b047cde89b6ce618f321532eeb6ebbd0974c0d92097a66a2264a9b42012eb3387fe91f217e2109f2eefa26ee24a9c33e5417365bf07ecSalt: [192 42 57 120 177 235 67 200 75 110 215 162 5 44 205 20]Password Match: true