feat: password.

password/hmac.go

@@ -0,0 +1,50 @@
+package password
+
+import (
+	"crypto/hmac"
+	"crypto/sha256"
+	"encoding/hex"
+	"errors"
+)
+
+// HMACCrypto 实现基于 HMAC 的加密和验证
+type HMACCrypto struct {
+	secretKey []byte
+}
+
+// NewHMACCrypto 创建一个新的 HMACCrypto 实例
+func NewHMACCrypto(secretKey string) *HMACCrypto {
+	return &HMACCrypto{
+		secretKey: []byte(secretKey),
+	}
+}
+
+// Encrypt 使用 HMAC-SHA256 对数据进行加密
+func (h *HMACCrypto) Encrypt(data string) (string, error) {
+	if data == "" {
+		return "", errors.New("数据不能为空")
+	}
+
+	mac := hmac.New(sha256.New, h.secretKey)
+	_, err := mac.Write([]byte(data))
+	if err != nil {
+		return "", err
+	}
+
+	hash := mac.Sum(nil)
+	return hex.EncodeToString(hash), nil
+}
+
+// Verify 验证数据的 HMAC 值是否匹配
+func (h *HMACCrypto) Verify(data, encrypted string) (bool, error) {
+	if data == "" || encrypted == "" {
+		return false, errors.New("数据或加密字符串不能为空")
+	}
+
+	expectedHash, err := h.Encrypt(data)
+	if err != nil {
+		return false, err
+	}
+
+	return hmac.Equal([]byte(expectedHash), []byte(encrypted)), nil
+}