Examples with ECPublicKey java.security.interfaces.ECPublicKey used on opensource projects

Example 6 with ECPublicKey

use of java.security.interfaces.ECPublicKey in project platform_frameworks_base by android.

the class AndroidKeyStoreProvider method getAndroidKeyStorePublicKey.

@NonNull
public static AndroidKeyStorePublicKey getAndroidKeyStorePublicKey(@NonNull String alias, int uid, @NonNull @KeyProperties.KeyAlgorithmEnum String keyAlgorithm, @NonNull byte[] x509EncodedForm) {
    PublicKey publicKey;
    try {
        KeyFactory keyFactory = KeyFactory.getInstance(keyAlgorithm);
        publicKey = keyFactory.generatePublic(new X509EncodedKeySpec(x509EncodedForm));
    } catch (NoSuchAlgorithmException e) {
        throw new ProviderException("Failed to obtain " + keyAlgorithm + " KeyFactory", e);
    } catch (InvalidKeySpecException e) {
        throw new ProviderException("Invalid X.509 encoding of public key", e);
    }
    if (KeyProperties.KEY_ALGORITHM_EC.equalsIgnoreCase(keyAlgorithm)) {
        return new AndroidKeyStoreECPublicKey(alias, uid, (ECPublicKey) publicKey);
    } else if (KeyProperties.KEY_ALGORITHM_RSA.equalsIgnoreCase(keyAlgorithm)) {
        return new AndroidKeyStoreRSAPublicKey(alias, uid, (RSAPublicKey) publicKey);
    } else {
        throw new ProviderException("Unsupported Android Keystore public key algorithm: " + keyAlgorithm);
    }
}

Example 7 with ECPublicKey

use of java.security.interfaces.ECPublicKey in project platform_frameworks_base by android.

the class AndroidKeyPairGeneratorTest method assertKeyPairCorrect.

private void assertKeyPairCorrect(KeyPair pair, String alias, String keyType, int keySize, AlgorithmParameterSpec spec, X500Principal dn, BigInteger serial, Date start, Date end) throws Exception {
    final PublicKey pubKey = pair.getPublic();
    assertNotNull("The PublicKey for the KeyPair should be not null", pubKey);
    assertEquals(keyType, pubKey.getAlgorithm());
    if ("EC".equalsIgnoreCase(keyType)) {
        assertEquals("Curve should be what was specified during initialization", keySize, ((ECPublicKey) pubKey).getParams().getCurve().getField().getFieldSize());
    } else if ("RSA".equalsIgnoreCase(keyType)) {
        RSAPublicKey rsaPubKey = (RSAPublicKey) pubKey;
        assertEquals("Modulus size should be what is specified during initialization", (keySize + 7) & ~7, (rsaPubKey.getModulus().bitLength() + 7) & ~7);
        if (spec != null) {
            RSAKeyGenParameterSpec params = (RSAKeyGenParameterSpec) spec;
            assertEquals((keySize + 7) & ~7, (params.getKeysize() + 7) & ~7);
            assertEquals(params.getPublicExponent(), rsaPubKey.getPublicExponent());
        }
    }
    final PrivateKey privKey = pair.getPrivate();
    assertNotNull("The PrivateKey for the KeyPair should be not null", privKey);
    assertEquals(keyType, privKey.getAlgorithm());
    if ("EC".equalsIgnoreCase(keyType)) {
        assertTrue("EC private key must be instanceof ECKey: " + privKey.getClass().getName(), privKey instanceof ECKey);
        assertEquals("Private and public key must have the same EC parameters", ((ECKey) pubKey).getParams(), ((ECKey) privKey).getParams());
    } else if ("RSA".equalsIgnoreCase(keyType)) {
        assertTrue("RSA private key must be instance of RSAKey: " + privKey.getClass().getName(), privKey instanceof RSAKey);
        assertEquals("Private and public key must have the same RSA modulus", ((RSAKey) pubKey).getModulus(), ((RSAKey) privKey).getModulus());
    }
    final byte[] userCertBytes = mAndroidKeyStore.get(Credentials.USER_CERTIFICATE + alias);
    assertNotNull("The user certificate should exist for the generated entry", userCertBytes);
    final CertificateFactory cf = CertificateFactory.getInstance("X.509");
    final Certificate userCert = cf.generateCertificate(new ByteArrayInputStream(userCertBytes));
    assertTrue("Certificate should be in X.509 format", userCert instanceof X509Certificate);
    final X509Certificate x509userCert = (X509Certificate) userCert;
    assertEquals("Public key used to sign certificate should have the same algorithm as in KeyPair", pubKey.getAlgorithm(), x509userCert.getPublicKey().getAlgorithm());
    assertEquals("PublicKey used to sign certificate should match one returned in KeyPair", pubKey, AndroidKeyStoreProvider.getAndroidKeyStorePublicKey(Credentials.USER_PRIVATE_KEY + alias, KeyStore.UID_SELF, x509userCert.getPublicKey().getAlgorithm(), x509userCert.getPublicKey().getEncoded()));
    assertEquals("The Subject DN should be the one passed into the params", dn, x509userCert.getSubjectDN());
    assertEquals("The Issuer DN should be the same as the Subject DN", dn, x509userCert.getIssuerDN());
    assertEquals("The Serial should be the one passed into the params", serial, x509userCert.getSerialNumber());
    assertDateEquals("The notBefore date should be the one passed into the params", start, x509userCert.getNotBefore());
    assertDateEquals("The notAfter date should be the one passed into the params", end, x509userCert.getNotAfter());
    // Assert that the cert's signature verifies using the public key from generated KeyPair
    x509userCert.verify(pubKey);
    // Assert that the cert's signature verifies using the public key from the cert itself.
    x509userCert.verify(x509userCert.getPublicKey());
    final byte[] caCerts = mAndroidKeyStore.get(Credentials.CA_CERTIFICATE + alias);
    assertNull("A list of CA certificates should not exist for the generated entry", caCerts);
    ExportResult exportResult = mAndroidKeyStore.exportKey(Credentials.USER_PRIVATE_KEY + alias, KeymasterDefs.KM_KEY_FORMAT_X509, null, null);
    assertEquals(KeyStore.NO_ERROR, exportResult.resultCode);
    final byte[] pubKeyBytes = exportResult.exportData;
    assertNotNull("The keystore should return the public key for the generated key", pubKeyBytes);
    assertTrue("Public key X.509 format should be as expected", Arrays.equals(pubKey.getEncoded(), pubKeyBytes));
}

Example 8 with ECPublicKey

use of java.security.interfaces.ECPublicKey in project wycheproof by google.

the class EcKeyTest method testDefaultKeyGeneration.

/**
   * Checks that the default key size for ECDSA is up to date.
   * The test uses NIST SP 800-57 part1 revision 4, Table 2, page 53
   * http://nvlpubs.nist.gov/nistpubs/SpecialPublications/NIST.SP.800-57pt1r4.pdf
   * for the minimal key size of EC keys.
   * Nist recommends a minimal security strength of 112 bits for the time until 2030.
   * To achieve this security strength EC keys of at least 224 bits are required.
   */
public void testDefaultKeyGeneration() throws Exception {
    KeyPairGenerator keyGen = KeyPairGenerator.getInstance("EC");
    KeyPair keyPair = keyGen.generateKeyPair();
    ECPublicKey pub = (ECPublicKey) keyPair.getPublic();
    int keySize = EcUtil.fieldSizeInBits(pub.getParams().getCurve());
    if (keySize < 224) {
        fail("Expected a default key size of at least 224 bits. Size of generate key is " + keySize);
    }
}

Example 9 with ECPublicKey

use of java.security.interfaces.ECPublicKey in project wycheproof by google.

the class EcdhTest method testWrongOrder.

/**
   * This test modifies the order of group in the public key. A severe bug would be an
   * implementation that leaks information whether the private key is larger than the order given in
   * the public key. Also a severe bug would be to reduce the private key modulo the order given in
   * the public key parameters.
   */
// TODO(bleichen): This can be merged with testModifiedPublic once this is fixed.
@SuppressWarnings("InsecureCryptoUsage")
public void testWrongOrder(String algorithm, ECParameterSpec spec) throws Exception {
    KeyAgreement ka;
    try {
        ka = KeyAgreement.getInstance(algorithm);
    } catch (NoSuchAlgorithmException ex) {
        System.out.println("testWrongOrder: " + algorithm + " not supported");
        return;
    }
    KeyPairGenerator keyGen = KeyPairGenerator.getInstance("EC");
    ECPrivateKey priv;
    ECPublicKey pub;
    try {
        keyGen.initialize(spec);
        priv = (ECPrivateKey) keyGen.generateKeyPair().getPrivate();
        pub = (ECPublicKey) keyGen.generateKeyPair().getPublic();
    } catch (GeneralSecurityException ex) {
        // This is OK, since not all provider support Brainpool curves
        System.out.println("testWrongOrder: could not generate keys for curve");
        return;
    }
    // Get the shared secret for the unmodified keys.
    ka.init(priv);
    ka.doPhase(pub, true);
    byte[] shared = ka.generateSecret();
    // Generate a modified public key.
    ECParameterSpec modifiedParams = new ECParameterSpec(spec.getCurve(), spec.getGenerator(), spec.getOrder().shiftRight(16), 1);
    ECPublicKeySpec modifiedPubSpec = new ECPublicKeySpec(pub.getW(), modifiedParams);
    KeyFactory kf = KeyFactory.getInstance("EC");
    ECPublicKey modifiedPub;
    try {
        modifiedPub = (ECPublicKey) kf.generatePublic(modifiedPubSpec);
    } catch (GeneralSecurityException ex) {
        // The provider does not support non-standard curves or did a validity check.
        // Both would be correct.
        System.out.println("testWrongOrder: can't modify order.");
        return;
    }
    byte[] shared2;
    try {
        ka.init(priv);
        ka.doPhase(modifiedPub, true);
        shared2 = ka.generateSecret();
    } catch (GeneralSecurityException ex) {
        // This is the expected behavior
        System.out.println("testWrongOrder:" + ex.toString());
        return;
    }
    // TODO(bleichen): Getting here is already a bug and we might flag this later.
    // At the moment we are only interested in really bad behavior of a library, that potentially
    // leaks the secret key. This is the case when the shared secrets are different, since this
    // suggests that the implementation reduces the multiplier modulo the given order of the curve
    // or some other behaviour that is dependent on the private key.
    // An attacker who can check whether a DH computation was done correctly or incorrectly because
    // of modular reduction, can determine the private key, either by a binary search or by trying
    // to guess the private key modulo some small "order".
    // BouncyCastle v.1.53 fails this test, and leaks the private key.
    System.out.println("Generated shared secret with a modified order:" + algorithm + "\n" + "expected:" + TestUtil.bytesToHex(shared) + " computed:" + TestUtil.bytesToHex(shared2));
    assertEquals("Algorithm:" + algorithm, TestUtil.bytesToHex(shared), TestUtil.bytesToHex(shared2));
}

Example 10 with ECPublicKey

use of java.security.interfaces.ECPublicKey in project wycheproof by google.

the class EcdhTest method testDecode.

public void testDecode() throws Exception {
    KeyFactory kf = KeyFactory.getInstance("EC");
    ECPublicKey key1 = (ECPublicKey) kf.generatePublic(EC_VALID_PUBLIC_KEY.getSpec());
    ECPublicKey key2 = (ECPublicKey) kf.generatePublic(EC_VALID_PUBLIC_KEY.getX509EncodedKeySpec());
    ECParameterSpec params1 = key1.getParams();
    ECParameterSpec params2 = key2.getParams();
    assertEquals(params1.getCofactor(), params2.getCofactor());
    assertEquals(params1.getCurve(), params2.getCurve());
    assertEquals(params1.getGenerator(), params2.getGenerator());
    assertEquals(params1.getOrder(), params2.getOrder());
    assertEquals(key1.getW(), key2.getW());
}