使用nodeJS和Objective-C的非对称公钥/私钥加密RSA

我想使用非对称加密（RSA）对服务器（用nodeJS编写）和iOS应用（用Objective-C编写）之间的通信进行加密。

我要做的是仅加密从iOS应用程序（使用公钥）发送到服务器的数据，服务器需要在服务器上解密数据（使用私钥）才能读取数据。

使用来自GitHub的以下库，出于测试目的，我能够成功加密然后解密字符串“ hello world！”。使用Objective-C。注意： NSString * encWithPubKey是加密的base64字符串

• https://github.com/ideawu/Objective-C-RSA

  NSString *pubkey = @"-----BEGIN PUBLIC KEY-----\nMIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDDI2bvVLVYrb4B0raZgFP60VXY\ncvRmk9q56QiTmEm9HXlSPq1zyhyPQHGti5FokYJMzNcKm0bwL1q6ioJuD4EFI56D\na+70XdRz1CjQPQE3yXrXXVvOsmq9LsdxTFWsVBTehdCmrapKZVVx6PKl7myh0cfX\nQmyveT/eqyZK1gYjvQIDAQAB\n-----END PUBLIC KEY-----";
  NSString *privkey = @"-----BEGIN PRIVATE KEY-----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\n5xd0pcy9O2DOeso=\n-----END PRIVATE KEY-----";
  
  NSString *originString = @"hello world!";
  
  // Demo: encrypt with public key
  NSString *encWithPubKey = [RSA encryptString:originString publicKey:pubkey];
  NSLog(@"Enctypted with public key: %@", encWithPubKey);// prints the encrypted string in base64 format
  
  
  // Demo: decrypt with private key
  NSString *decWithPrivKey = [RSA decryptString:encWithPubKey privateKey:privkey];
  NSLog(@"Decrypted with private key: %@", decWithPrivKey);// prints -> hello world!
  

使用以下链接（出于测试目的），我还能够加密然后解密字符串“ hello world！”。使用nodeJs：

• https://coolaj86.com/articles/asymmetric-public--private-key-encryption-in-node-js

  var fs = require('fs');
  var ursa = require('/PATH/ursa');
  
  var pubkeyAlice = ursa.createPublicKey(fs.readFileSync("/PATH/public.pem"));
  var privkeyAlice = ursa.createPrivateKey(fs.readFileSync("/PATH/private.pem"));
  
  var msg = "hello world!";
  var enc = pubkeyAlice.encrypt(msg, 'utf8', 'base64');
  console.log('encrypted string:'+enc);
  
  var rcv = privkeyAlice.decrypt(enc, 'base64', 'utf8');
  console.log('decrypted', rcv, '\n');
  

以下两个示例均显示“ hello world！” 成功地。接下来，我从objective-C（采用base64格式）中获取了加密的字符串NSString * encWithPubKey，然后尝试使用nodeJS对其进行解密：

    var privkeyAlice = ursa.createPrivateKey(fs.readFileSync("/PATH/private.pem"));

    var enc = <  HERE IS THE ENCRYPTED STRING RECEIVED FROM Objective-C : encWithPubKey  >
    var rcv = privkeyAlice.decrypt(enc, 'base64', 'utf8');
    console.log('decrypted', rcv, '\n');

但是，这样做时，我在nodeJS中收到以下错误：

• 错误：错误：040A1079：RSA例程：RSA_padding_check_PKCS1_OAEP_mgf1：oaep解码错误

据我了解，此错误意味着加密的字符串无效。但是，我无法理解为什么会出现此错误。如果使用相同的语言，我可以加密和解密相同的字符串，但是，我无法在两种语言之间进行通信。

请注意，iOS应用程序和nodeJS都分别使用以下公共密钥和私有密钥：

-----BEGIN PUBLIC KEY-----
MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDDI2bvVLVYrb4B0raZgFP60VXY
cvRmk9q56QiTmEm9HXlSPq1zyhyPQHGti5FokYJMzNcKm0bwL1q6ioJuD4EFI56D
a+70XdRz1CjQPQE3yXrXXVvOsmq9LsdxTFWsVBTehdCmrapKZVVx6PKl7myh0cfX
QmyveT/eqyZK1gYjvQIDAQAB
-----END PUBLIC KEY-----


-----BEGIN PRIVATE KEY-----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-----END PRIVATE KEY-----

我尝试过在线查找，但是找不到足够的资源来解决问题。任何帮助将不胜感激！谢谢！