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

Example 11 with CipherParameters

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

the class DigestSignatureSpi method engineInitSign.

protected void engineInitSign(PrivateKey privateKey) throws InvalidKeyException {
    if (!(privateKey instanceof RSAPrivateKey)) {
        throw new InvalidKeyException("Supplied key (" + getType(privateKey) + ") is not a RSAPrivateKey instance");
    }
    CipherParameters param = RSAUtil.generatePrivateKeyParameter((RSAPrivateKey) privateKey);
    digest.reset();
    cipher.init(true, param);
}

Example 12 with CipherParameters

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

the class Signature method engineInitSign.

protected void engineInitSign(PrivateKey privateKey, SecureRandom random) throws InvalidKeyException {
    CipherParameters param;
    if (privateKey instanceof ECKey) {
        param = ECUtil.generatePrivateKeyParameter(privateKey);
    } else {
        throw new InvalidKeyException("can't recognise key type in ECDSA based signer");
    }
    digest.reset();
    if (random != null) {
        signer.init(true, new ParametersWithRandom(param, random));
    } else {
        signer.init(true, param);
    }
}

Example 13 with CipherParameters

use of org.bouncycastle.crypto.CipherParameters 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 14 with CipherParameters

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

the class BaseMac method engineInit.

protected void engineInit(Key key, AlgorithmParameterSpec params) throws InvalidKeyException, InvalidAlgorithmParameterException {
    CipherParameters param;
    if (key == null) {
        throw new InvalidKeyException("key is null");
    }
    if (key instanceof BCPBEKey) {
        BCPBEKey k = (BCPBEKey) key;
        if (k.getParam() != null) {
            param = k.getParam();
        } else if (params instanceof PBEParameterSpec) {
            param = PBE.Util.makePBEMacParameters(k, params);
        } else {
            throw new InvalidAlgorithmParameterException("PBE requires PBE parameters to be set.");
        }
    } else if (params instanceof IvParameterSpec) {
        param = new ParametersWithIV(new KeyParameter(key.getEncoded()), ((IvParameterSpec) params).getIV());
    } else if (params == null) {
        param = new KeyParameter(key.getEncoded());
    } else {
        throw new InvalidAlgorithmParameterException("unknown parameter type.");
    }
    macEngine.init(param);
}

Example 15 with CipherParameters

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

the class PBESecretKeyFactory method engineGenerateSecret.

protected SecretKey engineGenerateSecret(KeySpec keySpec) throws InvalidKeySpecException {
    if (keySpec instanceof PBEKeySpec) {
        PBEKeySpec pbeSpec = (PBEKeySpec) keySpec;
        CipherParameters param;
        if (pbeSpec.getSalt() == null) {
            return new BCPBEKey(this.algName, this.algOid, scheme, digest, keySize, ivSize, pbeSpec, null);
        }
        if (forCipher) {
            param = PBE.Util.makePBEParameters(pbeSpec, scheme, digest, keySize, ivSize);
        } else {
            param = PBE.Util.makePBEMacParameters(pbeSpec, scheme, digest, keySize);
        }
        return new BCPBEKey(this.algName, this.algOid, scheme, digest, keySize, ivSize, pbeSpec, param);
    }
    throw new InvalidKeySpecException("Invalid KeySpec");
}