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

Example 16 with Digest

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

the class JCERSACipher method initFromSpec.

private void initFromSpec(OAEPParameterSpec pSpec) throws NoSuchPaddingException {
    MGF1ParameterSpec mgfParams = (MGF1ParameterSpec) pSpec.getMGFParameters();
    Digest digest = JCEDigestUtil.getDigest(mgfParams.getDigestAlgorithm());
    if (digest == null) {
        throw new NoSuchPaddingException("no match on OAEP constructor for digest algorithm: " + mgfParams.getDigestAlgorithm());
    }
    cipher = new OAEPEncoding(new RSABlindedEngine(), digest, ((PSource.PSpecified) pSpec.getPSource()).getValue());
    paramSpec = pSpec;
}

Example 17 with Digest

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

the class JCERSACipher method engineInit.

protected void engineInit(int opmode, Key key, AlgorithmParameterSpec params, SecureRandom random) throws InvalidKeyException, InvalidAlgorithmParameterException {
    CipherParameters param;
    if (params == null || params instanceof OAEPParameterSpec) {
        if (key instanceof RSAPublicKey) {
            if (privateKeyOnly) {
                throw new InvalidKeyException("mode 1 requires RSAPrivateKey");
            }
            param = RSAUtil.generatePublicKeyParameter((RSAPublicKey) key);
        } else if (key instanceof RSAPrivateKey) {
            if (publicKeyOnly) {
                throw new InvalidKeyException("mode 2 requires RSAPublicKey");
            }
            param = RSAUtil.generatePrivateKeyParameter((RSAPrivateKey) key);
        } else {
            throw new InvalidKeyException("unknown key type passed to RSA");
        }
        if (params != null) {
            OAEPParameterSpec spec = (OAEPParameterSpec) params;
            paramSpec = params;
            if (!spec.getMGFAlgorithm().equalsIgnoreCase("MGF1") && !spec.getMGFAlgorithm().equals(PKCSObjectIdentifiers.id_mgf1.getId())) {
                throw new InvalidAlgorithmParameterException("unknown mask generation function specified");
            }
            if (!(spec.getMGFParameters() instanceof MGF1ParameterSpec)) {
                throw new InvalidAlgorithmParameterException("unkown MGF parameters");
            }
            Digest digest = JCEDigestUtil.getDigest(spec.getDigestAlgorithm());
            if (digest == null) {
                throw new InvalidAlgorithmParameterException("no match on digest algorithm: " + spec.getDigestAlgorithm());
            }
            MGF1ParameterSpec mgfParams = (MGF1ParameterSpec) spec.getMGFParameters();
            Digest mgfDigest = JCEDigestUtil.getDigest(mgfParams.getDigestAlgorithm());
            if (mgfDigest == null) {
                throw new InvalidAlgorithmParameterException("no match on MGF digest algorithm: " + mgfParams.getDigestAlgorithm());
            }
            cipher = new OAEPEncoding(new RSABlindedEngine(), digest, mgfDigest, ((PSource.PSpecified) spec.getPSource()).getValue());
        }
    } else {
        throw new IllegalArgumentException("unknown parameter type.");
    }
    if (!(cipher instanceof RSABlindedEngine)) {
        if (random != null) {
            param = new ParametersWithRandom(param, random);
        } else {
            param = new ParametersWithRandom(param, new SecureRandom());
        }
    }
    switch(opmode) {
        case Cipher.ENCRYPT_MODE:
        case Cipher.WRAP_MODE:
            cipher.init(true, param);
            break;
        case Cipher.DECRYPT_MODE:
        case Cipher.UNWRAP_MODE:
            cipher.init(false, param);
            break;
        default:
            throw new InvalidParameterException("unknown opmode " + opmode + " passed to RSA");
    }
}

Example 18 with Digest

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

the class CacheManager method setupFiles.

@SuppressWarnings("deprecation")
private static void setupFiles(String url, CacheResult cacheRet) {
    assert !JniUtil.useChromiumHttpStack();
    if (true) {
        // Note: SHA1 is much stronger hash. But the cost of setupFiles() is
        // 3.2% cpu time for a fresh load of nytimes.com. While a simple
        // String.hashCode() is only 0.6%. If adding the collision resolving
        // to String.hashCode(), it makes the cpu time to be 1.6% for a 
        // fresh load, but 5.3% for the worst case where all the files 
        // already exist in the file system, but database is gone. So it
        // needs to resolve collision for every file at least once.
        int hashCode = url.hashCode();
        StringBuffer ret = new StringBuffer(8);
        appendAsHex(hashCode, ret);
        String path = ret.toString();
        File file = new File(mBaseDir, path);
        if (true) {
            boolean checkOldPath = true;
            // cache file. If it is not, resolve the collision.
            while (file.exists()) {
                if (checkOldPath) {
                    CacheResult oldResult = mDataBase.getCache(url);
                    if (oldResult != null && oldResult.contentLength > 0) {
                        if (path.equals(oldResult.localPath)) {
                            path = oldResult.localPath;
                        } else {
                            path = oldResult.localPath;
                            file = new File(mBaseDir, path);
                        }
                        break;
                    }
                    checkOldPath = false;
                }
                ret = new StringBuffer(8);
                appendAsHex(++hashCode, ret);
                path = ret.toString();
                file = new File(mBaseDir, path);
            }
        }
        cacheRet.localPath = path;
        cacheRet.outFile = file;
    } else {
        // get hash in byte[]
        Digest digest = new SHA1Digest();
        int digestLen = digest.getDigestSize();
        byte[] hash = new byte[digestLen];
        int urlLen = url.length();
        byte[] data = new byte[urlLen];
        url.getBytes(0, urlLen, data, 0);
        digest.update(data, 0, urlLen);
        digest.doFinal(hash, 0);
        // convert byte[] to hex String
        StringBuffer result = new StringBuffer(2 * digestLen);
        for (int i = 0; i < digestLen; i = i + 4) {
            int h = (0x00ff & hash[i]) << 24 | (0x00ff & hash[i + 1]) << 16 | (0x00ff & hash[i + 2]) << 8 | (0x00ff & hash[i + 3]);
            appendAsHex(h, result);
        }
        cacheRet.localPath = result.toString();
        cacheRet.outFile = new File(mBaseDir, cacheRet.localPath);
    }
}

Example 19 with Digest

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

the class CipherSpi method initFromSpec.

private void initFromSpec(OAEPParameterSpec pSpec) throws NoSuchPaddingException {
    MGF1ParameterSpec mgfParams = (MGF1ParameterSpec) pSpec.getMGFParameters();
    Digest digest = DigestFactory.getDigest(mgfParams.getDigestAlgorithm());
    if (digest == null) {
        throw new NoSuchPaddingException("no match on OAEP constructor for digest algorithm: " + mgfParams.getDigestAlgorithm());
    }
    cipher = new OAEPEncoding(new RSABlindedEngine(), digest, ((PSource.PSpecified) pSpec.getPSource()).getValue());
    paramSpec = pSpec;
}

Example 20 with Digest

use of org.bouncycastle.crypto.Digest in project cxf by apache.

the class PbesHmacAesWrapKeyEncryptionAlgorithm method createDerivedKey.

static byte[] createDerivedKey(String keyAlgoJwt, int keySize, byte[] password, byte[] saltInput, int pbesCount) {
    byte[] saltValue = createSaltValue(keyAlgoJwt, saltInput);
    Digest digest = null;
    int macSigSize = PBES_HMAC_MAP.get(keyAlgoJwt);
    if (macSigSize == 256) {
        digest = new SHA256Digest();
    } else if (macSigSize == 384) {
        digest = new SHA384Digest();
    } else {
        digest = new SHA512Digest();
    }
    PKCS5S2ParametersGenerator gen = new PKCS5S2ParametersGenerator(digest);
    gen.init(password, saltValue, pbesCount);
    return ((KeyParameter) gen.generateDerivedParameters(keySize * 8)).getKey();
}