public IList <EntriesDecrypterResult> Run(DecryptGenericWorkflowOptions options)
{
if (!IsBuilt)
{
throw new EnvCryptException("workflow cannot be run because it has not been built");
}
return(_workflow.Run(options));
}
private void DecryptPlainText(DecryptGenericWorkflowOptions options, List <PairWithEncyptionAlgo> detailsOfAlgoUsedTakenFromDat, List <EntriesDecrypterResult> ret)
{
var plainTextRequests =
detailsOfAlgoUsedTakenFromDat.Where(d => d.EncryptionAlgo == EnvCryptAlgoEnum.PlainText).ToArray();
if (plainTextRequests.Any())
{
// Case: PlainText
var workflowOptions = new DecryptPlainTextEntryWorkflowOptions()
{
CategoryEntryPair = plainTextRequests.Select(r => r.Pair).ToList(),
DatFilePath = options.DatFilePath
};
var result = _plaintextWorkFlowBuilder.WithDatLoader(_datLoader)
.Build()
.Run(workflowOptions);
ret.AddRange(result);
}
}
private void DecryptRsa(DecryptGenericWorkflowOptions options, List <PairWithEncyptionAlgo> detailsOfAlgoUsedTakenFromDat, List <EntriesDecrypterResult> ret)
{
var rsaRequests =
detailsOfAlgoUsedTakenFromDat.Where(d => d.EncryptionAlgo == EnvCryptAlgoEnum.Rsa).ToArray();
if (rsaRequests.Any())
{
// Case: RSA
var workflowOptions = new DecryptEntryWorkflowOptions()
{
CategoryEntryPair = rsaRequests.Select(r => r.Pair).ToList(),
DatFilePath = options.DatFilePath,
KeyFilePaths = new[] { options.KeyFilePath },
ThrowIfDecryptingKeyNotFound = false
};
var result = _rsaWorkFlowBuilder.WithDatLoader(_datLoader)
.Build()
.Run(workflowOptions);
ret.AddRange(result);
}
}
public IList <EntriesDecrypterResult> Run(DecryptGenericWorkflowOptions options)
{
Contract.Requires <ArgumentNullException>(options != null, "options");
Contract.Requires <EnvCryptException>(options.CategoryEntryPair.Any(),
"at least one entry has to be requested");
//
var dat = _datLoader.Load(
new DatFromFileLoaderOptions()
{
DatFilePath = options.DatFilePath
});
// Get algo used for all requested entries
var detailsOfAlgoUsedTakenFromDat = new List <PairWithEncyptionAlgo>(options.CategoryEntryPair.Count);
EnvCryptAlgoEnum?algorithmThatIsNotPlainText = null;
for (uint entryI = 0; entryI < options.CategoryEntryPair.Count; entryI++)
{
var currentRequestedPair = options.CategoryEntryPair[(int)entryI];
Entry foundEntry;
if (!dat.SearchForEntry(currentRequestedPair.Category, currentRequestedPair.Entry, out foundEntry))
{
if (options.ThrowExceptionIfEntryNotFound)
{
throw new EnvCryptException("cannot find entry {0} in category {1}",
currentRequestedPair.Category, currentRequestedPair.Entry);
}
continue;
}
// Check that all requested entries use the same encryption algorithm because we are only loading one key
if (foundEntry.EncryptionAlgorithm != EnvCryptAlgoEnum.PlainText)
{
if (algorithmThatIsNotPlainText.HasValue)
{
if (foundEntry.EncryptionAlgorithm != algorithmThatIsNotPlainText.Value)
{
throw new EnvCryptException(
"all requested entries to be decrypted must have the same encryption algorithm. Since if they are not, one key cannot possibly decrypt for more than one algorithm");
}
}
else
{
{
algorithmThatIsNotPlainText = foundEntry.EncryptionAlgorithm;
}
}
}
detailsOfAlgoUsedTakenFromDat.Add(new PairWithEncyptionAlgo(currentRequestedPair,
foundEntry.EncryptionAlgorithm));
}
var ret = new List <EntriesDecrypterResult>();
DecryptPlainText(options, detailsOfAlgoUsedTakenFromDat, ret);
DecryptRsa(options, detailsOfAlgoUsedTakenFromDat, ret);
DecryptAes(options, detailsOfAlgoUsedTakenFromDat, ret);
return(ret);
}