public void Core_Security_Cryptography_DesEncryptor()
{
var rawData = "Hello, I am raw";
var encryptor = new DesEncryptor(rawData);
var encrypted = encryptor.Encrypt(rawData);
Assert.IsTrue(rawData != encrypted);
Assert.IsTrue(encryptor.Decrypt(encrypted) == rawData);
}
public string Encrypt(string text, string?salt = null)
{
var isSaltEmpty = string.IsNullOrWhiteSpace(salt);
var saltDescription = isSaltEmpty ? $"empty {nameof(salt)}" : $"{nameof(salt)} '{salt}'";
_logger.LogInformation($"Encryption of {nameof(text)} '{text}' with {saltDescription} requested.");
string hash;
string textAndSalt;
if (isSaltEmpty)
{
hash = DesEncryptor.Encrypt(text);
salt = hash.Substring(0, 2);
textAndSalt = text + salt;
}
else
{
textAndSalt = text + salt;
if (_cache.TryGetValue <string>(textAndSalt, out var cachedHash))
{
_logger.LogInformation($"Encrypted value of the {nameof(text)} '{text}' " +
$"was found in cache; the value is '{cachedHash}'.");
return(cachedHash);
}
hash = DesEncryptor.Encrypt(text, salt);
}
_cache.GetOrCreate(textAndSalt, cacheEntry =>
{
cacheEntry.Size = 13;
return(hash);
});
_logger.LogInformation($"Encryption of {nameof(text)} '{text}' with {saltDescription} succeeded. " +
$"Encrypted value is '{hash}'.");
return(hash);
}
public string Encrypt(string text, string?salt = null)
{
var isSaltEmpty = string.IsNullOrWhiteSpace(salt);
var saltDescription = isSaltEmpty ? $"empty {nameof(salt)}" : $"{nameof(salt)} '{salt}'";
_logger.LogInformation($"Encryption of {nameof(text)} '{text}' with {saltDescription} requested.");
string hash = isSaltEmpty
? DesEncryptor.Encrypt(text)
: DesEncryptor.Encrypt(text, salt);
_cache.GetOrCreate(hash, cacheEntry =>
{
var trimmedText = text.Length <= 8 ? text : text.Substring(0, 8);
cacheEntry.Size = trimmedText.Length;
return(trimmedText);
});
_logger.LogInformation($"Encryption of {nameof(text)} '{text}' with {saltDescription} succeeded. " +
$"Encrypted value is '{hash}'.");
return(hash);
}