//
// public static EncryptedBytes encrypt(byte[] Key, byte[] IV, string plainText, Encoding? encoding)
// {
// if (encoding == null) encoding = StaticHandler.encoding;
//
// // Check arguments.
// if (plainText == null || plainText.Length <= 0)
// throw new ArgumentNullException("plainText");
// if (Key == null || Key.Length <= 0)
// throw new ArgumentNullException("Key");
// if (IV == null || IV.Length <= 0)
// throw new ArgumentNullException("IV");
//
//
// byte[] encrypted;
// byte[] keyParams = IV;
// // Create an RijndaelManaged object
// // with the specified key and IV.
// using (RijndaelManaged rijAlg = new RijndaelManaged())
// {
// rijAlg.Key = Key;
// rijAlg.IV = IV;
//
// // Create a decryptor to perform the stream transform.
// ICryptoTransform encryptor = rijAlg.CreateEncryptor(rijAlg.Key, rijAlg.IV);
//
//
//
// // Create the streams used for encryption.
// using (MemoryStream msEncrypt = new MemoryStream())
// {
// using (CryptoStream csEncrypt = new CryptoStream(msEncrypt, encryptor, CryptoStreamMode.Write))
// {
// using (StreamWriter swEncrypt = new StreamWriter(csEncrypt))
// {
//
// //Write all data to the stream.
// swEncrypt.Write(plainText);
// }
// encrypted = msEncrypt.ToArray();
// }
// }
// }
//
//
// EncryptedBytes encryptedBytes = new EncryptedBytes(encrypted, keyParams, "AES");
//
// // Return the encrypted bytes from the memory stream.
// return encryptedBytes;
//
// /* var buffer = encoding.GetBytes(str);
//
// byte[] result;
//
// var encryptor = aes.CreateEncryptor(aes.Key, aes.IV)
// using (var resultStream = new MemoryStream())
// {
// using (var aesStream = new CryptoStream(resultStream, encryptor, CryptoStreamMode.Write))
// using (var plainStream = new MemoryStream(buffer))
// {
// plainStream.CopyTo(aesStream);
// }
//
// result = resultStream.ToArray();
// }*/
//
//
// }
public static EncryptedBytes encrypt(AesCryptoServiceProvider aesCryptoServiceProvider, string plainText,
Encoding encoding)
{
if (encoding == null)
{
encoding = StaticHandler.encoding;
}
// Check arguments.
if (plainText == null || plainText.Length <= 0)
{
throw new ArgumentNullException("plainText");
}
if (aesCryptoServiceProvider.Key == null || aesCryptoServiceProvider.Key.Length <= 0)
{
throw new ArgumentNullException("Key");
}
if (aesCryptoServiceProvider.IV == null || aesCryptoServiceProvider.IV.Length <= 0)
{
throw new ArgumentNullException("IV");
}
ICryptoTransform transform = aesCryptoServiceProvider.CreateEncryptor();
var encodedText = encoding.GetBytes(plainText);
var encryptedText =
transform.TransformFinalBlock(encodedText, 0, encodedText.Length).Select(Convert.ToSByte);
var derOctetString = new DerOctetString(aesCryptoServiceProvider.IV);
return(new EncryptedBytes(encryptedText, derOctetString.GetEncoded().Select(Convert.ToSByte), "AES"));
}
static PdfName getOcspHashKey(byte[] basicResponseBytes)
{
BasicOcspResponse basicResponse = BasicOcspResponse.GetInstance(Asn1Sequence.GetInstance(basicResponseBytes));
byte[] signatureBytes = basicResponse.Signature.GetBytes();
DerOctetString octetString = new DerOctetString(signatureBytes);
byte[] octetBytes = octetString.GetEncoded();
byte[] octetHash = hashBytesSha1(octetBytes);
PdfName octetName = new PdfName(Utilities.ConvertToHex(octetHash));
return(octetName);
}
//
// VRI signature hash key calculation
//
static PdfName getCrlHashKey(byte[] crlBytes)
{
X509Crl crl = new X509Crl(CertificateList.GetInstance(crlBytes));
byte[] signatureBytes = crl.GetSignature();
DerOctetString octetString = new DerOctetString(signatureBytes);
byte[] octetBytes = octetString.GetEncoded();
byte[] octetHash = hashBytesSha1(octetBytes);
PdfName octetName = new PdfName(Utilities.ConvertToHex(octetHash));
return(octetName);
}
