ECKey implements Serializable { public boolean isPubKeyOnly() { return priv == null; } ECKey();  ECKey(SecureRandom secureRandom);  ECKey(@Nullable BigInteger priv, ECPoint pub); static ECPoint compressPoint(ECPoint uncompressed); static ECPoint decompressPoint(ECPoint compressed); static ECKey fromPrivate(BigInteger privKey); static ECKey fromPrivate(byte[] privKeyBytes); static ECKey fromPrivateAndPrecalculatedPublic(BigInteger priv, ECPoint pub); static ECKey fromPrivateAndPrecalculatedPublic(byte[] priv, byte[] pub); static ECKey fromPublicOnly(ECPoint pub); static ECKey fromPublicOnly(byte[] pub); ECKey decompress(); boolean isPubKeyOnly(); boolean hasPrivKey(); static byte[] publicKeyFromPrivate(BigInteger privKey, boolean compressed); byte[] getAddress(); byte[] getPubKey(); ECPoint getPubKeyPoint(); BigInteger getPrivKey(); boolean isCompressed(); String toString(); String toStringWithPrivate(); ECDSASignature doSign(byte[] input); ECDSASignature sign(byte[] messageHash); static ECKey signatureToKey(byte[] messageHash, String signatureBase64); byte[] decryptAES(byte[] cipher); static boolean verify(byte[] data, ECDSASignature signature, byte[] pub); static boolean verify(byte[] data, byte[] signature, byte[] pub); boolean verify(byte[] data, byte[] signature); boolean verify(byte[] sigHash, ECDSASignature signature); boolean isPubKeyCanonical(); static boolean isPubKeyCanonical(byte[] pubkey); @Nullable static ECKey recoverFromSignature(int recId, ECDSASignature sig, byte[] messageHash, boolean compressed); @Nullable byte[] getPrivKeyBytes(); @Override boolean equals(Object o); @Override int hashCode(); static final ECDomainParameters CURVE; static final BigInteger HALF_CURVE_ORDER; }
@Test public void testIsPubKeyOnly() { ECKey key = ECKey.fromPublicOnly(pubKey); assertTrue(key.isPubKeyCanonical()); assertTrue(key.isPubKeyOnly()); assertArrayEquals(key.getPubKey(), pubKey); }