private static void doDecrypt(EncryptedContent content, Blob ckBits,
DecryptorV2.DecryptSuccessCallback onSuccess_0, EncryptError.OnError onError_1)
{
if (!content.hasInitialVector())
{
onError_1.onError(
net.named_data.jndn.encrypt.EncryptError.ErrorCode.MissingRequiredInitialVector,
"Expecting Initial Vector in the encrypted content, but it is not present");
return;
}
Blob plainData;
try {
Cipher cipher = javax.crypto.Cipher.getInstance("AES/CBC/PKCS5PADDING");
cipher.init(javax.crypto.Cipher.DECRYPT_MODE,
new SecretKeySpec(ckBits.getImmutableArray(), "AES"),
new IvParameterSpec(content.getInitialVector()
.getImmutableArray()));
plainData = new Blob(cipher.doFinal(content.getPayload()
.getImmutableArray()), false);
} catch (Exception ex) {
onError_1.onError(net.named_data.jndn.encrypt.EncryptError.ErrorCode.DecryptionFailure,
"Decryption error in doDecrypt: " + ex);
return;
}
try {
onSuccess_0.onSuccess(plainData);
} catch (Exception exception) {
logger_.log(ILOG.J2CsMapping.Util.Logging.Level.SEVERE, "Error in onSuccess", exception);
}
}
/// <summary>
/// Asynchronously decrypt the encryptedContent.
/// </summary>
///
/// <param name="encryptedContent">the EncryptedContent object. If you may change it later, then pass in a copy of the object.</param>
/// <param name="onSuccess">NOTE: The library will log any exceptions thrown by this callback, but for better error handling the callback should catch and properly handle any exceptions.</param>
/// <param name="onError_0">error string. NOTE: The library will log any exceptions thrown by this callback, but for better error handling the callback should catch and properly handle any exceptions.</param>
public void decrypt(EncryptedContent encryptedContent,
DecryptorV2.DecryptSuccessCallback onSuccess, EncryptError.OnError onError_0)
{
if (encryptedContent.getKeyLocator().getType() != net.named_data.jndn.KeyLocatorType.KEYNAME)
{
logger_.log(ILOG.J2CsMapping.Util.Logging.Level.INFO,
"Missing required KeyLocator in the supplied EncryptedContent block");
onError_0.onError(net.named_data.jndn.encrypt.EncryptError.ErrorCode.MissingRequiredKeyLocator,
"Missing required KeyLocator in the supplied EncryptedContent block");
return;
}
if (!encryptedContent.hasInitialVector())
{
logger_.log(ILOG.J2CsMapping.Util.Logging.Level.INFO,
"Missing required initial vector in the supplied EncryptedContent block");
onError_0.onError(
net.named_data.jndn.encrypt.EncryptError.ErrorCode.MissingRequiredInitialVector,
"Missing required initial vector in the supplied EncryptedContent block");
return;
}
Name ckName_1 = encryptedContent.getKeyLocatorName();
DecryptorV2.ContentKey contentKey_2 = ILOG.J2CsMapping.Collections.Collections.Get(contentKeys_, ckName_1);
bool isNew = (contentKey_2 == null);
if (isNew)
{
contentKey_2 = new DecryptorV2.ContentKey();
ILOG.J2CsMapping.Collections.Collections.Put(contentKeys_, ckName_1, contentKey_2);
}
if (contentKey_2.isRetrieved)
{
doDecrypt(encryptedContent, contentKey_2.bits, onSuccess, onError_0);
}
else
{
logger_.log(
ILOG.J2CsMapping.Util.Logging.Level.INFO,
"CK {0} not yet available, so adding to the pending decrypt queue",
ckName_1);
ILOG.J2CsMapping.Collections.Collections.Add(contentKey_2.pendingDecrypts, new ContentKey.PendingDecrypt(
encryptedContent, onSuccess, onError_0));
}
if (isNew)
{
fetchCk(ckName_1, contentKey_2, onError_0, net.named_data.jndn.encrypt.EncryptorV2.N_RETRIES);
}
}
