Swift中的AES加密？

如何解决Swift中的AES加密？

我正在Swift中使用AES加密。

public static String encrypt1(String plaintext,String key,String IV) throws Exception {
   SecretKeySpec   secretKey = new SecretKeySpec(key.getBytes("UTF-8"),"AES");
   Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
   cipher.init(Cipher.ENCRYPT_MODE,secretKey,new IvParameterSpec(IV.getBytes("UTF-8")));
   byte[] ciphertext = cipher.doFinal(plaintext.getBytes("UTF-8"));
   byte[] iv = cipher.getIV();
   String asd = Base64.encodeToString(ciphertext,Base64.NO_WRAP);
   return asd;
}

我找不到适用于iOS 13及更低版本的AES CBC PKCS5Padding加密。 iOS 13具有我不需要的CryptoKit。

我尝试过的快速转换： //此处的操作是kCCEncrypt的默认值为0

public func encrypt1(plainText : String,key: String,iv : String,operation : Int) -> String {
        let data = Data(plainText.utf8)
        let ivData = Data(iv.utf8)
        let keyData = Data(key.utf8)
        let cryptLength  = size_t(data.count + kCCBlockSizeAES128)
        var cryptData = Data(count:cryptLength)
    
        let keyLength = size_t(kCCKeySizeAES128)
        let options = CCOptions(kCCOptionPKCS7Padding)
        var numBytesEncrypted :size_t = 0
    
        let cryptStatus = cryptData.withUnsafeMutableBytes {cryptBytes in
            data.withUnsafeBytes {dataBytes in
                ivData.withUnsafeBytes {ivBytes in
                    keyData.withUnsafeBytes {keyBytes in
                        CCCrypt(CCOperation(operation),CCAlgorithm(kCCAlgorithmAES),options,keyBytes,keyLength,ivBytes,dataBytes,data.count,cryptBytes,cryptLength,&numBytesEncrypted)
                    }
                }
            }
        }
    
        if UInt32(cryptStatus) == UInt32(kCCSuccess) {
            cryptData.removeSubrange(numBytesEncrypted..<cryptData.count)
            
        } else {
            print("Error: \(cryptStatus)")
        }
        print("My Encrypted Value: \(String(decoding: cryptData,as: UTF8.self))")
        return String(decoding: cryptData,as: UTF8.self);
    }

我从快速输出中得到的是 �4��ɚ�-���.'��kZU����Xm�E��X��S��^������I�WW�>a�bo）K�� ��pS��=�>������-�}ͮQrqZha�d{i *U�����y���a�m0H������.)˶X�#t�6�C��w5@����Q����V�.w�!��� qyjH$S C�,�u��ܻ��L�ȧ�����_V�ym�R~RG���\o�S& kdx|�m�L��x�t� �d��<�� _���,/��ͺ9�=��X.��а��ft�3�Ф�G�V�QH=?����:jc� ��Ԫ�������� ！�ϝ5}��V�PA ��

我不明白我在执行什么错误，我仍然遵循AES加密算法，但仍然得到垃圾输出。请帮忙！！！

解决方法

最后编码了解决方案：

class ParentViewController() {
    func presentFirstViewController() {
        let myObject = MyObject()

        let firstViewController = FirstViewController(myObject: myObject)
        present(firstViewController,animated: true,completion: nil)
    }
}

要以字符串形式获取加密值：

import CommonCrypto
struct AES {

    // MARK: - Value
    // MARK: Private
    private let key: Data
    private let iv: Data


    // MARK: - Initialzier
    init?(key: String,iv: String) {
        guard key.count == kCCKeySizeAES128 || key.count == kCCKeySizeAES256,let keyData = key.data(using: .utf8) else {
            debugPrint("Error: Failed to set a key.")
            return nil
        }

        guard iv.count == kCCBlockSizeAES128,let ivData = iv.data(using: .utf8) else {
            debugPrint("Error: Failed to set an initial vector.")
            return nil
        }


        self.key = keyData
        self.iv  = ivData
    }


    // MARK: - Function
    // MARK: Public
    func encrypt(string: String) -> String {
        guard let cryptData =  crypt(data: string.data(using: .utf8),option: CCOperation(kCCEncrypt)) else { return "" }
        return cryptData.base64EncodedString()
    }

    func decrypt(data: Data?) -> String? {
        guard let decryptedData = crypt(data: data,option: CCOperation(kCCDecrypt)) else { return nil }
        return String(bytes: decryptedData,encoding: .utf8)
    }

    func crypt(data: Data?,option: CCOperation) -> Data? {
        guard let data = data else { return nil }

        let cryptLength = data.count + kCCBlockSizeAES128
        var cryptData   = Data(count: cryptLength)

        let keyLength = key.count
        let options   = CCOptions(kCCOptionPKCS7Padding)

        var bytesLength = Int(0)

        let status = cryptData.withUnsafeMutableBytes { cryptBytes in
            data.withUnsafeBytes { dataBytes in
                iv.withUnsafeBytes { ivBytes in
                    key.withUnsafeBytes { keyBytes in
                    CCCrypt(option,CCAlgorithm(kCCAlgorithmAES),options,keyBytes.baseAddress,keyLength,ivBytes.baseAddress,dataBytes.baseAddress,data.count,cryptBytes.baseAddress,cryptLength,&bytesLength)
                    }
                }
            }
        }

        guard UInt32(status) == UInt32(kCCSuccess) else {
            debugPrint("Error: Failed to crypt data. Status \(status)")
            return nil
        }

        cryptData.removeSubrange(bytesLength..<cryptData.count)
        return cryptData
    }
}