增加提现相关的与打款相关逻辑

backend/pkg/crypto/aes.go

@@ -0,0 +1,69 @@
+package crypto
+
+import (
+	"crypto/aes"
+	"crypto/cipher"
+	"crypto/rand"
+	"encoding/base64"
+	"errors"
+	"io"
+)
+
+// 加密密钥（生产环境应从配置文件读取）
+// 必须是 16、24 或 32 字节
+const encryptionKey = "hfb-sys-2024-secret-key-32bytes!" // 正好32字节
+
+// Encrypt 使用 AES-GCM 加密文本
+func Encrypt(plainText string) (string, error) {
+	block, err := aes.NewCipher([]byte(encryptionKey))
+	if err != nil {
+		return "", err
+	}
+
+	aesGCM, err := cipher.NewGCM(block)
+	if err != nil {
+		return "", err
+	}
+
+	// 创建随机 nonce
+	nonce := make([]byte, aesGCM.NonceSize())
+	if _, err := io.ReadFull(rand.Reader, nonce); err != nil {
+		return "", err
+	}
+
+	// 加密并附加 nonce
+	cipherBytes := aesGCM.Seal(nonce, nonce, []byte(plainText), nil)
+	return base64.StdEncoding.EncodeToString(cipherBytes), nil
+}
+
+// Decrypt 使用 AES-GCM 解密文本
+func Decrypt(cipherText string) (string, error) {
+	block, err := aes.NewCipher([]byte(encryptionKey))
+	if err != nil {
+		return "", err
+	}
+
+	aesGCM, err := cipher.NewGCM(block)
+	if err != nil {
+		return "", err
+	}
+
+	cipherBytes, err := base64.StdEncoding.DecodeString(cipherText)
+	if err != nil {
+		return "", err
+	}
+
+	nonceSize := aesGCM.NonceSize()
+	if len(cipherBytes) < nonceSize {
+		return "", errors.New("ciphertext too short")
+	}
+
+	// 提取 nonce 和实际密文
+	nonce, cipherBytes := cipherBytes[:nonceSize], cipherBytes[nonceSize:]
+	plainBytes, err := aesGCM.Open(nil, nonce, cipherBytes, nil)
+	if err != nil {
+		return "", err
+	}
+
+	return string(plainBytes), nil
+}