Golang を使用した暗号アルゴリズムの実装の原則と実践

package main

import (
    "crypto/md5"
    "encoding/hex"
    "fmt"
)

func MD5Encrypt(text string) string {
    hash := md5.New()
    hash.Write([]byte(text))
    hashed := hash.Sum(nil)
    return hex.EncodeToString(hashed)
}

func main() {
    text := "Hello, MD5!"
    fmt.Printf("MD5加密前的数据: %s
", text)
    encrypted := MD5Encrypt(text)
    fmt.Printf("MD5加密后的数据: %s
", encrypted)
}

package main

import (
    "crypto/sha256"
    "encoding/hex"
    "fmt"
)

func SHA256Encrypt(text string) string {
    hash := sha256.New()
    hash.Write([]byte(text))
    hashed := hash.Sum(nil)
    return hex.EncodeToString(hashed)
}

func main() {
    text := "Hello, SHA-256!"
    fmt.Printf("SHA-256加密前的数据: %s
", text)
    encrypted := SHA256Encrypt(text)
    fmt.Printf("SHA-256加密后的数据: %s
", encrypted)
}

package main

import (
    "golang.org/x/crypto/bcrypt"
    "fmt"
)

func BCryptEncrypt(password string) string {
    hashedPassword, err := bcrypt.GenerateFromPassword([]byte(password), bcrypt.DefaultCost)
    if err != nil {
        fmt.Println("密码加密失败:", err)
    }
    return string(hashedPassword)
}

func main() {
    password := "password123"
    fmt.Printf("原始密码: %s
", password)
    encrypted := BCryptEncrypt(password)
    fmt.Printf("BCrypt加密后的密码: %s
", encrypted)
}