Examples with ClientFirstMessage org.apache.kafka.common.security.scram.ScramMessages.ClientFirstMessage used on opensource projects

Example 6 with ClientFirstMessage

use of org.apache.kafka.common.security.scram.ScramMessages.ClientFirstMessage in project apache-kafka-on-k8s by banzaicloud.

the class ScramFormatterTest method rfc7677Example.

/**
 * Tests that the formatter implementation produces the same values for the
 * example included in <a href="https://tools.ietf.org/html/rfc5802#section-5">RFC 7677</a>
 */
@Test
public void rfc7677Example() throws Exception {
    ScramFormatter formatter = new ScramFormatter(ScramMechanism.SCRAM_SHA_256);
    String password = "pencil";
    String c1 = "n,,n=user,r=rOprNGfwEbeRWgbNEkqO";
    String s1 = "r=rOprNGfwEbeRWgbNEkqO%hvYDpWUa2RaTCAfuxFIlj)hNlF$k0,s=W22ZaJ0SNY7soEsUEjb6gQ==,i=4096";
    String c2 = "c=biws,r=rOprNGfwEbeRWgbNEkqO%hvYDpWUa2RaTCAfuxFIlj)hNlF$k0,p=dHzbZapWIk4jUhN+Ute9ytag9zjfMHgsqmmiz7AndVQ=";
    String s2 = "v=6rriTRBi23WpRR/wtup+mMhUZUn/dB5nLTJRsjl95G4=";
    ClientFirstMessage clientFirst = new ClientFirstMessage(formatter.toBytes(c1));
    ServerFirstMessage serverFirst = new ServerFirstMessage(formatter.toBytes(s1));
    ClientFinalMessage clientFinal = new ClientFinalMessage(formatter.toBytes(c2));
    ServerFinalMessage serverFinal = new ServerFinalMessage(formatter.toBytes(s2));
    String username = clientFirst.saslName();
    assertEquals("user", username);
    String clientNonce = clientFirst.nonce();
    assertEquals("rOprNGfwEbeRWgbNEkqO", clientNonce);
    String serverNonce = serverFirst.nonce().substring(clientNonce.length());
    assertEquals("%hvYDpWUa2RaTCAfuxFIlj)hNlF$k0", serverNonce);
    byte[] salt = serverFirst.salt();
    assertArrayEquals(Base64.decoder().decode("W22ZaJ0SNY7soEsUEjb6gQ=="), salt);
    int iterations = serverFirst.iterations();
    assertEquals(4096, iterations);
    byte[] channelBinding = clientFinal.channelBinding();
    assertArrayEquals(Base64.decoder().decode("biws"), channelBinding);
    byte[] serverSignature = serverFinal.serverSignature();
    assertArrayEquals(Base64.decoder().decode("6rriTRBi23WpRR/wtup+mMhUZUn/dB5nLTJRsjl95G4="), serverSignature);
    byte[] saltedPassword = formatter.saltedPassword(password, salt, iterations);
    byte[] serverKey = formatter.serverKey(saltedPassword);
    byte[] computedProof = formatter.clientProof(saltedPassword, clientFirst, serverFirst, clientFinal);
    assertArrayEquals(clientFinal.proof(), computedProof);
    byte[] computedSignature = formatter.serverSignature(serverKey, clientFirst, serverFirst, clientFinal);
    assertArrayEquals(serverFinal.serverSignature(), computedSignature);
    // Minimum iterations defined in RFC-7677
    assertEquals(4096, ScramMechanism.SCRAM_SHA_256.minIterations());
}