如何使用Ionic对IOS进行RSA加密

Question

我正在开发一个本地android应用程序和混合IOS应用程序。我在给BL发送请求之前对密码进行加密。下面是我的本地代码。

public String Encrypt (String plain) throws NoSuchAlgorithmException, NoSuchPaddingException, InvalidKeyException, IllegalBlockSizeException, BadPaddingException
{
    try {
        AssetManager assets = context.getAssets();
        byte[] key = readFully(
                assets.open("encryption.der", AssetManager.ACCESS_BUFFER));
        KeySpec publicKeySpec = new X509EncodedKeySpec(key);

        KeyFactory kf = KeyFactory.getInstance("RSA");
        Key pk = kf.generatePublic(publicKeySpec);

        Cipher cipher = Cipher.getInstance("RSA");
        cipher.init(Cipher.ENCRYPT_MODE, pk);
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        CipherOutputStream cout = new CipherOutputStream(out, cipher);
        try {
            cout.write(plain.getBytes(UTF_8));
            cout.flush();
        }catch (Exception e){
            e.printStackTrace();
        }finally {
            try {
                cout.close();
            } catch (IOException e) {
              e.printStackTrace();
            }
        }
        encrypted  = new String(encode(out.toByteArray(), DEFAULT), "UTF-8");

        return encrypted;
    } catch (IOException e) {
        e.printStackTrace();
    } catch (InvalidKeySpecException e) {
        e.printStackTrace();
    }

    return null;

}

static byte[] readFully(InputStream inputStream) throws IOException {
        InputStream in = new BufferedInputStream(inputStream);
        byte[] tmp = new byte[1024];
        int readLen, size = 0;
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        while ((readLen = in.read(tmp)) != -1) {
            if (((long) size + readLen) > Integer.MAX_VALUE) {
                // woah! did we just ship an app of 2GB?
                throw new IllegalStateException("Invalid file. File size exceeds expected "
                        + "maximum of 2GB");
            }
            size += readLen;
            out.write(tmp, 0, readLen);
        }
        return out.toByteArray();
    }

我的钥匙在encryption.der文件里。在android系统里一切都很好。现在来到IOS，我正在用Ionic开发。我无法完成加密部分。我使用了"cryptico“：link：https://github.com/wwwtyro/cryptico/blob/master/README.md。最后像这样转换成Base64。

var EncryptionPassword = cryptico.encrypt($scope.userInfo.Password, publicKey);
$scope.encPass = base64.encode(EncryptionPassword.cipher);

但是我得到了BL的ArrayIndexOutOfBound异常。你能建议同样的解决方案也适用于angularjs。因此RSA加密既适用于IOS，也适用于Android。

Answer 1

1. 创建一个服务并将您的公钥放在其中。 .service(“设置”，函数()){ ( 'MIIBIjANBgdcssvsvsfvsfvsfvrefvfvfviuwoihijwfoiw278499080989i09M+KC8MYYOu/NRLmFg85LRrfRszyI/vZ/k8982789uiwbgchdbhU+3joQZoJ3Sxq/GbIIFf/3y4f9DuKI53y1qR2qD4xIskfa9rPVqvBtAu2KSNRd8V4J8RKI2gT2YEA+A3Z0mQq4GBRS8iYmGLqRQyPfNUSankylBrTpOIVFBZORdZehjJMmwl98UynyfnyMIHUIFuhefuibiufbeufbsoijn93fD7nxt+siZryfazn3EAgBaTKTV/U5xIepzDN6ZYJ4qnC93u6erdb1X4m1zU6RGapwzCOPOORTyzw/uWJ8twcODNt0cqVp+sYQIDAQAB'；})

1. Now in your JS encrypt using public key and JSEncrypt.

var encrypt = new JSEncrypt()；encrypt.setPublicKey(Settings.publicKey)；EncryptionPin = encrypt.encrypt($scope.customerInfo.Pin)；

EncryptionPin是最终的关键。