title: java.lang.IllegalArgumentException: string curve25519 not an OID bouncycastle 1.52
body: <p>I'm trying to generate a key pair using the /java bouncy castle 1.52 implementation for curve 25519 what gives me </p>
  
  <blockquote>
    <p>java.lang.IllegalArgumentException: string curve25519 not an OID</p>
  </blockquote>
  
  <p>Here is my code:</p>
  
  <pre><code>public KeyPair generateKeys() throws NoSuchAlgorithmException,
          NoSuchProviderException, InvalidAlgorithmParameterException {
      ECParameterSpec ecSpec = ECNamedCurveTable.getParameterSpec("curve25519");
      KeyPairGenerator g = KeyPairGenerator.getInstance("ECDSA", "BC");
      g.initialize(ecSpec, new SecureRandom());
  
      return g.generateKeyPair();
  }
  </code></pre>
  
  <p>the result of this code is a stacktrace below:</p>
  
  <blockquote>
    <p>java.lang.IllegalArgumentException: string curve25519 not an OID
        at org.bouncycastle.asn1.ASN1ObjectIdentifier.(Unknown Source)
        at org.bouncycastle.jcajce.provider.asymmetric.ec.BCECPublicKey.getEncoded(Unknown Source)
        at org.bouncycastle.jcajce.provider.asymmetric.ec.BCECPrivateKey.getPublicKeyDetails(Unknown Source)
        at org.bouncycastle.jcajce.provider.asymmetric.ec.BCECPrivateKey.(Unknown Source)
        at org.bouncycastle.jcajce.provider.asymmetric.ec.KeyPairGeneratorSpi$EC.generateKeyPair(Unknown Source)
        at com.poc.databank.encryption.BouncyCastleEncryption.generateKeys(BouncyCastleEncryption.java:22)
        at com.poc.databank.encryption.BouncyCastleTest.testApp(BouncyCastleTest.java:16)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:606)
        at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
        at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
        at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
        at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
        at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
        at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
        at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
        at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
        at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
        at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
        at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
        at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
        at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
        at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
        at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
        at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
        at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
        at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
        at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)</p>
  </blockquote>
  
  <p>I checked the bouncy castle code and figured out that the curve25519 is registered in CustomNamedCurves class as </p>
  
  <pre><code>defineCurve("curve25519", curve25519);
  </code></pre>
  
  <p>but not as </p>
  
  <pre><code>defineCurveWithOID("secp192k1", SECObjectIdentifiers.secp192k1,
              secp192k1);
  </code></pre>
  
  <p>I understand that there should be a reason for this. Please help me to found out a way how I can generate a key pair uising curve25519.</p>