feat():learning后台管理项目初始化

pkg/utils/crypto.go

@@ -0,0 +1,55 @@
+package utils
+
+import (
+	"crypto/md5"
+	"crypto/rand"
+	"crypto/sha256"
+	"encoding/hex"
+	"math/big"
+)
+
+// MD5Hash 计算MD5哈希
+func MD5Hash(text string) string {
+	hash := md5.Sum([]byte(text))
+	return hex.EncodeToString(hash[:])
+}
+
+// SHA256Hash 计算SHA256哈希
+func SHA256Hash(text string) string {
+	hash := sha256.Sum256([]byte(text))
+	return hex.EncodeToString(hash[:])
+}
+
+// GenerateRandomString 生成指定长度的随机字符串
+func GenerateRandomString(length int) (string, error) {
+	const charset = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
+	b := make([]byte, length)
+	for i := range b {
+		num, err := rand.Int(rand.Reader, big.NewInt(int64(len(charset))))
+		if err != nil {
+			return "", err
+		}
+		b[i] = charset[num.Int64()]
+	}
+	return string(b), nil
+}
+
+// GenerateSalt 生成盐值
+func GenerateSalt() (string, error) {
+	return GenerateRandomString(16)
+}
+
+// HashPassword 使用盐值哈希密码
+func HashPassword(password, salt string) string {
+	return SHA256Hash(password + salt)
+}
+
+// VerifyPassword 验证密码
+func VerifyPassword(password, salt, hash string) bool {
+	return HashPassword(password, salt) == hash
+}
+
+// GenerateToken 生成随机token
+func GenerateToken() (string, error) {
+	return GenerateRandomString(32)
+}