Examples with KeyFactory java.security.KeyFactory used on opensource projects

Example 11 with KeyFactory

use of java.security.KeyFactory in project android_frameworks_base by ParanoidAndroid.

the class AndroidKeyStoreTest method testKeyStore_SetKeyEntry_Encrypted_Success.

public void testKeyStore_SetKeyEntry_Encrypted_Success() throws Exception {
    setupPassword();
    mKeyStore.load(null, null);
    final CertificateFactory f = CertificateFactory.getInstance("X.509");
    final Certificate caCert = f.generateCertificate(new ByteArrayInputStream(FAKE_CA_1));
    KeyFactory keyFact = KeyFactory.getInstance("RSA");
    PrivateKey privKey = keyFact.generatePrivate(new PKCS8EncodedKeySpec(FAKE_KEY_1));
    final Certificate[] chain = new Certificate[2];
    chain[0] = f.generateCertificate(new ByteArrayInputStream(FAKE_USER_1));
    chain[1] = caCert;
    mKeyStore.setKeyEntry(TEST_ALIAS_1, privKey, null, chain);
    Entry actualEntry = mKeyStore.getEntry(TEST_ALIAS_1, null);
    assertNotNull("Retrieved entry should exist", actualEntry);
    assertTrue("Retrieved entry should be of type PrivateKeyEntry", actualEntry instanceof PrivateKeyEntry);
    PrivateKeyEntry actual = (PrivateKeyEntry) actualEntry;
    assertPrivateKeyEntryEquals(actual, FAKE_KEY_1, FAKE_USER_1, FAKE_CA_1);
}

Example 12 with KeyFactory

use of java.security.KeyFactory in project OpenAttestation by OpenAttestation.

the class X509Util method decodeDerPublicKey.

public static PublicKey decodeDerPublicKey(byte[] publicKeyBytes) throws CryptographyException {
    try {
        // throws NoSuchAlgorithmException
        KeyFactory factory = KeyFactory.getInstance("RSA");
        // throws InvalidKeySpecException
        PublicKey publicKey = factory.generatePublic(new X509EncodedKeySpec(publicKeyBytes));
        return publicKey;
    } catch (Exception e) {
        throw new CryptographyException(e);
    }
}

Example 13 with KeyFactory

use of java.security.KeyFactory in project remusic by aa112901.

the class RSAUtils method getPublicKey.

/**
     * 使用模和指数生成RSA公钥
     * 注意：【此代码用了默认补位方式，为RSA/None/PKCS1Padding，不同JDK默认的补位方式可能不同，如Android默认是RSA
     * /None/NoPadding】
     *
     * @param modulus  模
     * @param exponent 指数
     * @return
     */
public static RSAPublicKey getPublicKey(String modulus, String exponent) {
    try {
        BigInteger b1 = new BigInteger(modulus);
        BigInteger b2 = new BigInteger(exponent);
        KeyFactory keyFactory = KeyFactory.getInstance("RSA");
        RSAPublicKeySpec keySpec = new RSAPublicKeySpec(b1, b2);
        return (RSAPublicKey) keyFactory.generatePublic(keySpec);
    } catch (Exception e) {
        e.printStackTrace();
        return null;
    }
}

Example 14 with KeyFactory

use of java.security.KeyFactory in project LuaViewSDK by alibaba.

the class VerifyUtil method generatePrivateKey.

/**
     * read private key
     *
     * @param filename
     * @return
     */
public static PrivateKey generatePrivateKey(final String filename) {
    try {
        File f = new File(filename);
        FileInputStream fis = new FileInputStream(f);
        DataInputStream dis = new DataInputStream(fis);
        byte[] keyBytes = new byte[(int) f.length()];
        dis.readFully(keyBytes);
        dis.close();
        PKCS8EncodedKeySpec spec = new PKCS8EncodedKeySpec(keyBytes);
        KeyFactory kf = KeyFactory.getInstance(ALGORITHM_RSA);
        return kf.generatePrivate(spec);
    } catch (Exception e) {
        e.printStackTrace();
        return null;
    }
}

Example 15 with KeyFactory

use of java.security.KeyFactory in project LuaViewSDK by alibaba.

the class VerifyUtil method generatePublicKey.

/**
     * read public key
     *
     * @param filename
     * @return
     */
private static PublicKey generatePublicKey(final String filename) {
    try {
        File f = new File(filename);
        FileInputStream fis = new FileInputStream(f);
        DataInputStream dis = new DataInputStream(fis);
        byte[] keyBytes = new byte[(int) f.length()];
        dis.readFully(keyBytes);
        dis.close();
        X509EncodedKeySpec spec = new X509EncodedKeySpec(keyBytes);
        KeyFactory kf = KeyFactory.getInstance(ALGORITHM_RSA);
        return kf.generatePublic(spec);
    } catch (Exception e) {
        e.printStackTrace();
        return null;
    }
}