/**
* Asymmetrically encrypts content inheriting from {@link NetworkContent}. A default key length
* will be used.
*
* @param content the content to be encrypted.
* @param publicKey The asymmetric public key with which the content will be encrypted
* @param keyLength the strength of the encryption
* @return the encrypted content
* @throws DataLengthException
* @throws InvalidKeyException
* @throws IllegalStateException
* @throws InvalidCipherTextException
* @throws IllegalBlockSizeException
* @throws BadPaddingException
* @throws IOException
*/
public static HybridEncryptedContent encryptHybrid(NetworkContent content, PublicKey publicKey)
throws DataLengthException, InvalidKeyException, IllegalStateException,
InvalidCipherTextException, IllegalBlockSizeException, BadPaddingException, IOException {
byte[] serialized = EncryptionUtil.serializeObject(content);
HybridEncryptedContent encryptHybrid =
EncryptionUtil.encryptHybrid(serialized, publicKey, H2HConstants.KEYLENGTH_HYBRID_AES);
encryptHybrid.setTimeToLive(content.getTimeToLive());
return encryptHybrid;
}
/**
* Symmetrically encrypts content inheriting from {@link NetworkContent} by means of the AES
* algorithm. The content first gets serialized, then encrypted.
*
* @param content the content to be encrypted. Can be of any type that extends {@link
* NetworkContent}.
* @param aesKey The symmetric key with which the content will be encrypted.
* @return EncryptedContent which contains the encrypted byte[] content as well as the AES
* initialization vector (IV).
* @throws InvalidCipherTextException
* @throws IllegalStateException
* @throws DataLengthException
* @throws IOException
*/
public static EncryptedNetworkContent encryptAES(NetworkContent content, SecretKey aesKey)
throws DataLengthException, IllegalStateException, InvalidCipherTextException, IOException {
byte[] serialized = EncryptionUtil.serializeObject(content);
byte[] initVector = EncryptionUtil.generateIV();
byte[] encryptedContent = EncryptionUtil.encryptAES(serialized, aesKey, initVector);
EncryptedNetworkContent encryptedNetworkContent =
new EncryptedNetworkContent(encryptedContent, initVector);
encryptedNetworkContent.setTimeToLive(content.getTimeToLive());
return encryptedNetworkContent;
}
