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I need to access Google's BigQuery REST Api Endpoints with Service Account using Http client library. So, I tried the code provided in the article Using OAuth 2.0 for Server to Server Applications

It gives me the compilation error in the below line.

Algorithm.RSA256(null, privateKey)

Code below:

GoogleCredential credential = GoogleCredential
            .fromStream(new FileInputStream("service_account.json"));

    PrivateKey privateKey = credential.getServiceAccountPrivateKey();
    String privateKeyId = credential.getServiceAccountPrivateKeyId();

    try {

        Algorithm algorithm = Algorithm.RSA256(null, privateKey);

        String signedJwt = JWT.create().withKeyId(privateKeyId)
                .withIssuer("123456-compute@developer.gserviceaccount.com")
                .withSubject("123456-compute@developer.gserviceaccount.com")
                .withAudience("https://firestore.googleapis.com/google.firestore.v1beta1.Firestore")
                .withIssuedAt(new Date(now)).withExpiresAt(new Date(now + 3600 * 1000L)).sign(algorithm);
    } catch (Exception e) {
        e.printStackTrace();
    }

Note: Algorithm.RSA256() accept java.security.interfaces.RSAPrivateKey whereas Google Api returns java.security.PrivateKey

Could anyone help me in this?

Linda Lawton - DaImTo
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Alex Andrew
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1 Answers1

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What I found out looking into the Implementation: The RSAPrivateKey inherits from PrivateKey, so if you cast it (maybe type-check first), then you should be good to go!

Chris
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