Examples with CipherInputStream com.github.zhenwei.core.crypto.io.CipherInputStream used on opensource projects

Example 1 with CipherInputStream

use of com.github.zhenwei.core.crypto.io.CipherInputStream in project LinLong-Java by zhenwei1108.

the class BcRSAKeyTransEnvelopedRecipient method getRecipientOperator.

public RecipientOperator getRecipientOperator(AlgorithmIdentifier keyEncryptionAlgorithm, final AlgorithmIdentifier contentEncryptionAlgorithm, byte[] encryptedContentEncryptionKey) throws CMSException {
    CipherParameters secretKey = extractSecretKey(keyEncryptionAlgorithm, contentEncryptionAlgorithm, encryptedContentEncryptionKey);
    final Object dataCipher = EnvelopedDataHelper.createContentCipher(false, secretKey, contentEncryptionAlgorithm);
    return new RecipientOperator(new InputDecryptor() {

        public AlgorithmIdentifier getAlgorithmIdentifier() {
            return contentEncryptionAlgorithm;
        }

        public InputStream getInputStream(InputStream dataIn) {
            if (dataCipher instanceof BufferedBlockCipher) {
                return new CipherInputStream(dataIn, (BufferedBlockCipher) dataCipher);
            } else {
                return new CipherInputStream(dataIn, (StreamCipher) dataCipher);
            }
        }
    });
}

Example 2 with CipherInputStream

use of com.github.zhenwei.core.crypto.io.CipherInputStream in project LinLong-Java by zhenwei1108.

the class BcPKCS12PBEInputDecryptorProviderBuilder method build.

public InputDecryptorProvider build(final char[] password) {
    return new InputDecryptorProvider() {

        public InputDecryptor get(final AlgorithmIdentifier algorithmIdentifier) {
            final PaddedBufferedBlockCipher engine = PKCS12PBEUtils.getEngine(algorithmIdentifier.getAlgorithm());
            PKCS12PBEParams pbeParams = PKCS12PBEParams.getInstance(algorithmIdentifier.getParameters());
            CipherParameters params = PKCS12PBEUtils.createCipherParameters(algorithmIdentifier.getAlgorithm(), digest, engine.getBlockSize(), pbeParams, password);
            engine.init(false, params);
            return new InputDecryptor() {

                public AlgorithmIdentifier getAlgorithmIdentifier() {
                    return algorithmIdentifier;
                }

                public InputStream getInputStream(InputStream input) {
                    return new CipherInputStream(input, engine);
                }

                public GenericKey getKey() {
                    return new GenericKey(PKCS12ParametersGenerator.PKCS12PasswordToBytes(password));
                }
            };
        }
    };
}

Example 3 with CipherInputStream

use of com.github.zhenwei.core.crypto.io.CipherInputStream in project LinLong-Java by zhenwei1108.

the class BcPasswordEnvelopedRecipient method getRecipientOperator.

public RecipientOperator getRecipientOperator(AlgorithmIdentifier keyEncryptionAlgorithm, final AlgorithmIdentifier contentEncryptionAlgorithm, byte[] derivedKey, byte[] encryptedContentEncryptionKey) throws CMSException {
    KeyParameter secretKey = extractSecretKey(keyEncryptionAlgorithm, contentEncryptionAlgorithm, derivedKey, encryptedContentEncryptionKey);
    final Object dataCipher = EnvelopedDataHelper.createContentCipher(false, secretKey, contentEncryptionAlgorithm);
    return new RecipientOperator(new InputDecryptor() {

        public AlgorithmIdentifier getAlgorithmIdentifier() {
            return contentEncryptionAlgorithm;
        }

        public InputStream getInputStream(InputStream dataOut) {
            if (dataCipher instanceof BufferedBlockCipher) {
                return new CipherInputStream(dataOut, (BufferedBlockCipher) dataCipher);
            } else {
                return new CipherInputStream(dataOut, (StreamCipher) dataCipher);
            }
        }
    });
}