Examples with PBEParametersGenerator org.bouncycastle.crypto.PBEParametersGenerator used on opensource projects

Example 1 with PBEParametersGenerator

use of org.bouncycastle.crypto.PBEParametersGenerator in project XobotOS by xamarin.

the class JDKKeyStore method engineLoad.

public void engineLoad(InputStream stream, char[] password) throws IOException {
    table.clear();
    if (// just initialising
    stream == null) {
        return;
    }
    DataInputStream dIn = new DataInputStream(stream);
    int version = dIn.readInt();
    if (version != STORE_VERSION) {
        if (version != 0) {
            throw new IOException("Wrong version of key store.");
        }
    }
    byte[] salt = new byte[dIn.readInt()];
    dIn.readFully(salt);
    int iterationCount = dIn.readInt();
    //
    // we only do an integrity check if the password is provided.
    //
    // BEGIN android-changed
    HMac hMac = new HMac(new OpenSSLDigest.SHA1());
    // END android-changed
    if (password != null && password.length != 0) {
        byte[] passKey = PBEParametersGenerator.PKCS12PasswordToBytes(password);
        // BEGIN android-changed
        PBEParametersGenerator pbeGen = new PKCS12ParametersGenerator(new OpenSSLDigest.SHA1());
        // END android-changed
        pbeGen.init(passKey, salt, iterationCount);
        CipherParameters macParams = pbeGen.generateDerivedMacParameters(hMac.getMacSize());
        Arrays.fill(passKey, (byte) 0);
        hMac.init(macParams);
        MacInputStream mIn = new MacInputStream(dIn, hMac);
        loadStore(mIn);
        // Finalise our mac calculation
        byte[] mac = new byte[hMac.getMacSize()];
        hMac.doFinal(mac, 0);
        // TODO Should this actually be reading the remainder of the stream?
        // Read the original mac from the stream
        byte[] oldMac = new byte[hMac.getMacSize()];
        dIn.readFully(oldMac);
        if (!Arrays.constantTimeAreEqual(mac, oldMac)) {
            table.clear();
            throw new IOException("KeyStore integrity check failed.");
        }
    } else {
        loadStore(dIn);
        // TODO Should this actually be reading the remainder of the stream?
        // Parse the original mac from the stream too
        byte[] oldMac = new byte[hMac.getMacSize()];
        dIn.readFully(oldMac);
    }
}

Example 2 with PBEParametersGenerator

use of org.bouncycastle.crypto.PBEParametersGenerator in project robovm by robovm.

the class BcKeyStoreSpi method engineLoad.

public void engineLoad(InputStream stream, char[] password) throws IOException {
    table.clear();
    if (// just initialising
    stream == null) {
        return;
    }
    DataInputStream dIn = new DataInputStream(stream);
    int version = dIn.readInt();
    if (version != STORE_VERSION) {
        if (version != 0 && version != 1) {
            throw new IOException("Wrong version of key store.");
        }
    }
    int saltLength = dIn.readInt();
    if (saltLength <= 0) {
        throw new IOException("Invalid salt detected");
    }
    byte[] salt = new byte[saltLength];
    dIn.readFully(salt);
    int iterationCount = dIn.readInt();
    //
    // we only do an integrity check if the password is provided.
    //
    HMac hMac = new HMac(new SHA1Digest());
    if (password != null && password.length != 0) {
        byte[] passKey = PBEParametersGenerator.PKCS12PasswordToBytes(password);
        PBEParametersGenerator pbeGen = new PKCS12ParametersGenerator(new SHA1Digest());
        pbeGen.init(passKey, salt, iterationCount);
        CipherParameters macParams;
        if (version != 2) {
            macParams = pbeGen.generateDerivedMacParameters(hMac.getMacSize());
        } else {
            macParams = pbeGen.generateDerivedMacParameters(hMac.getMacSize() * 8);
        }
        Arrays.fill(passKey, (byte) 0);
        hMac.init(macParams);
        MacInputStream mIn = new MacInputStream(dIn, hMac);
        loadStore(mIn);
        // Finalise our mac calculation
        byte[] mac = new byte[hMac.getMacSize()];
        hMac.doFinal(mac, 0);
        // TODO Should this actually be reading the remainder of the stream?
        // Read the original mac from the stream
        byte[] oldMac = new byte[hMac.getMacSize()];
        dIn.readFully(oldMac);
        if (!Arrays.constantTimeAreEqual(mac, oldMac)) {
            table.clear();
            throw new IOException("KeyStore integrity check failed.");
        }
    } else {
        loadStore(dIn);
        // TODO Should this actually be reading the remainder of the stream?
        // Parse the original mac from the stream too
        byte[] oldMac = new byte[hMac.getMacSize()];
        dIn.readFully(oldMac);
    }
}

Example 3 with PBEParametersGenerator

use of org.bouncycastle.crypto.PBEParametersGenerator in project samourai-wallet-android by Samourai-Wallet.

the class AESUtil method decryptWithSetMode.

public static String decryptWithSetMode(String ciphertext, CharSequenceX password, int iterations, int mode, @Nullable BlockCipherPadding padding) throws InvalidCipherTextException, UnsupportedEncodingException, DecryptionException {
    final int AESBlockSize = 4;
    byte[] cipherdata = Base64.decodeBase64(ciphertext.getBytes());
    // Separate the IV and cipher data
    byte[] iv = copyOfRange(cipherdata, 0, AESBlockSize * 4);
    byte[] input = copyOfRange(cipherdata, AESBlockSize * 4, cipherdata.length);
    PBEParametersGenerator generator = new PKCS5S2ParametersGenerator();
    generator.init(PBEParametersGenerator.PKCS5PasswordToUTF8Bytes(password.toString().toCharArray()), iv, iterations);
    KeyParameter keyParam = (KeyParameter) generator.generateDerivedParameters(256);
    CipherParameters params = new ParametersWithIV(keyParam, iv);
    BlockCipher cipherMode;
    if (mode == MODE_CBC) {
        cipherMode = new CBCBlockCipher(new AESEngine());
    } else {
        // mode == MODE_OFB
        cipherMode = new OFBBlockCipher(new AESEngine(), 128);
    }
    BufferedBlockCipher cipher;
    if (padding != null) {
        cipher = new PaddedBufferedBlockCipher(cipherMode, padding);
    } else {
        cipher = new BufferedBlockCipher(cipherMode);
    }
    cipher.reset();
    cipher.init(false, params);
    // create a temporary buffer to decode into (includes padding)
    byte[] buf = new byte[cipher.getOutputSize(input.length)];
    int len = cipher.processBytes(input, 0, input.length, buf, 0);
    len += cipher.doFinal(buf, len);
    // remove padding
    byte[] out = new byte[len];
    System.arraycopy(buf, 0, out, 0, len);
    // return string representation of decoded bytes
    String result = new String(out, "UTF-8");
    if (result.isEmpty()) {
        throw new DecryptionException("Decrypted string is empty.");
    }
    return result;
}

Example 4 with PBEParametersGenerator

use of org.bouncycastle.crypto.PBEParametersGenerator in project jruby-openssl by jruby.

the class PKCS5 method generatePBEKey.

private static RubyString generatePBEKey(final Ruby runtime, final char[] pass, final byte[] salt, final int iter, final int keySize) {
    PBEParametersGenerator generator = new PKCS5S2ParametersGenerator();
    generator.init(PBEParametersGenerator.PKCS5PasswordToBytes(pass), salt, iter);
    CipherParameters params = generator.generateDerivedParameters(keySize * 8);
    return StringHelper.newString(runtime, ((KeyParameter) params).getKey());
}

Example 5 with PBEParametersGenerator

use of org.bouncycastle.crypto.PBEParametersGenerator in project jruby-openssl by jruby.

the class PEMInputOutput method extractPBES2CipherParams.

private static CipherParameters extractPBES2CipherParams(char[] password, PBES2Parameters pbeParams) {
    PBKDF2Params pbkdfParams = PBKDF2Params.getInstance(pbeParams.getKeyDerivationFunc().getParameters());
    int keySize = 192;
    if (pbkdfParams.getKeyLength() != null) {
        keySize = pbkdfParams.getKeyLength().intValue() * 8;
    }
    int iterationCount = pbkdfParams.getIterationCount().intValue();
    byte[] salt = pbkdfParams.getSalt();
    PBEParametersGenerator generator = new PKCS5S2ParametersGenerator();
    generator.init(PBEParametersGenerator.PKCS5PasswordToBytes(password), salt, iterationCount);
    return generator.generateDerivedParameters(keySize);
}