private ProtectedKey GenerateKey(KeyedHashAlgorithm algorithm, DataProtectionScope dataProtectionScope)
{
using (algorithm)
{
return(ProtectedKey.CreateFromPlaintextKey(algorithm.Key, dataProtectionScope));
}
}
private ProtectedKey ProtectKey(byte[] decryptedKey, DataProtectionScope protectionScope)
{
ProtectedKey protectedKey = ProtectedKey.CreateFromPlaintextKey(decryptedKey, protectionScope);
CryptographyUtility.ZeroOutBytes(decryptedKey);
return(protectedKey);
}
private ProtectedKey GenerateKey(SymmetricAlgorithm algorithm, DataProtectionScope dataProtectionScope)
{
byte[] generatedKey = GenerateUnprotectedKey(algorithm);
try
{
return(ProtectedKey.CreateFromPlaintextKey(generatedKey, dataProtectionScope));
}
finally
{
if (generatedKey != null)
{
CryptographyUtility.ZeroOutBytes(generatedKey);
}
}
}