public List <WordCountDto> List()
{
var wordCounts = _dbContext.Set <WordCount>().ToList();
var rsa = CryptographicFunctions.GetKeyFromContainer(WordCounterConstants.KeyContainerName);
return(wordCounts.Select(wordCount => new WordCountDto
{
Word = CryptographicFunctions.Decrypt(rsa.ToXMLString(true), wordCount.EncryptedWord),
Count = wordCount.Count
})
.ToList());
}
public void StoreWordCounts(List <KeyValuePair <string, int> > countedWords, int numberOfItemsToStore)
{
if (countedWords == null || !countedWords.Any())
{
return;
}
// Create an instance of the RSA algorithm class
var rsa = CryptographicFunctions.GetKeyFromContainer(WordCounterConstants.KeyContainerName);
// Get the public keyy
var publicKey = rsa.ToXMLString(false); // false to get the public key
var someSalt = "somesalt";
if (numberOfItemsToStore > countedWords.Count)
{
numberOfItemsToStore = countedWords.Count;
}
for (var i = 0; i < numberOfItemsToStore; i++)
{
var countedWord = countedWords[i];
var keyAsBytes = Encoding.UTF32.GetBytes(countedWord.Key);
var saltAsBytes = Encoding.UTF32.GetBytes(someSalt);
var hashedWord = CryptographicFunctions.GenerateSaltedHash(keyAsBytes, saltAsBytes);
var encryptedWord = CryptographicFunctions.Encrypt(publicKey, countedWord.Key);
var wordCount = new WordCount
{
Id = hashedWord,
EncryptedWord = encryptedWord,
Count = countedWord.Value
};
try
{
AddOrUpdateWordCount(wordCount);
}
catch (Exception e)
{
_logger.LogError(e.Message, null);
}
}
}
