How can I read JKS file in C#

Question

I have been requested from my partner to use his API, and to use this API, I should encrypt all sent data to AES 256. He shared a .jks file with me, in addition to some parameters with values like (Alias, KEYSTORE_PASSWORD and KEY_PASSWORD), then he told me that the password which I should use for encryption is stored in that JKS file, and to open it, I should use the pre-shared parameters.

So, how can I reach that?

UPDATE ... This is not a web service am trying to invoke, I just need to get the Password which is stored in the JKS file, so, I am not going to invoke an API or import a certificate into my client app. So, it doesn't matter if opening the app by C# or any other tool, i just need to get the password in order to use it later in encrypting some data.

Answer 1

But you cannot access "TrustedCertEntry". It is a restriction. See: https://docs.oracle.com/javase/6/docs/technotes/guides/security/jsse/JSSERefGuide.html#InstallProbs

Answer 2

You can use fetch or libraries like axios.

Check this question how to do a POST request with fetch: Fetch: POST JSON data

Example POST request function with axios:

const sendToServer = async (products) => {
    try {
      // store response in variable if needed
      const res = await axios.post(
        "/your_api/products",
        products  // products you want to post
      );
      // return data in case
      return res.data
    } catch (error) {
      console.log(error);
    }
  }
// implement this function where you need it
sendToServer(products)

or check POST examples in the axios documentation: https://axios-http.com/docs/post_example

// Send a POST request
axios.post('/user', {
    firstName: 'Fred',
    lastName: 'Flintstone'
  })
  .then(function (response) {
    console.log(response);
  })
  .catch(function (error) {
    console.log(error);
  });

// Send a POST request
axios({
  method: 'post',
  url: '/user/12345',
  data: {
    firstName: 'Fred',
    lastName: 'Flintstone'
  }
});