feat: crypto

crypto/crypto.go

@@ -1,14 +1,9 @@
 package crypto
 
 import (
-	"fmt"
-
-	"crypto/aes"
-	"crypto/cipher"
 	"crypto/rand"
 	"crypto/sha256"
 
-	"encoding/base64"
 	"encoding/hex"
 
 	"golang.org/x/crypto/bcrypt"
@@ -59,44 +54,3 @@ func GenerateSalt(length int) (string, error) {
 	}
 	return hex.EncodeToString(salt), nil
 }
-
-// DecryptAES AES解密函数
-func DecryptAES(cipherText, key string) (string, error) {
-	// 将密文从Base64解码
-	cipherData, err := base64.StdEncoding.DecodeString(cipherText)
-	if err != nil {
-		return "", err
-	}
-
-	// 创建AES块
-	block, err := aes.NewCipher([]byte(key))
-	if err != nil {
-		return "", err
-	}
-
-	// 检查密文长度是否为块大小的倍数
-	if len(cipherData)%aes.BlockSize != 0 {
-		return "", fmt.Errorf("ciphertext is not a multiple of the block size")
-	}
-
-	// 创建CBC解密器
-	iv := cipherData[:aes.BlockSize] // 提取IV
-	cipherData = cipherData[aes.BlockSize:]
-	mode := cipher.NewCBCDecrypter(block, iv)
-
-	// 解密
-	plainText := make([]byte, len(cipherData))
-	mode.CryptBlocks(plainText, cipherData)
-
-	// 去除填充
-	plainText = pkcs7Unpad(plainText)
-
-	return string(plainText), nil
-}
-
-// pkcs7Unpad PKCS7填充去除
-func pkcs7Unpad(data []byte) []byte {
-	length := len(data)
-	padding := int(data[length-1])
-	return data[:length-padding]
-}