public static MemoryStream EncryptHelper(byte[] plainTextArray, byte[] keyArray, byte[] nonceArray, byte[] aadArray, int readCount)
{
var encryptedDataStream = new MemoryStream();
using (var baseStream = new MemoryStream(plainTextArray))
using (var stream = new AesGcmEncryptStream(baseStream, keyArray, nonceArray, TagBitsLength, aadArray))
{
int readBytes;
var buffer = new byte[readCount];
while ((readBytes = stream.Read(buffer, 0, readCount)) > 0)
{
encryptedDataStream.Write(buffer, 0, readBytes);
}
}
return(encryptedDataStream);
}
/// <summary>
/// Returns an updated stream where the stream contains the encrypted object contents.
/// The specified instruction will be used to encrypt data.
/// </summary>
/// <param name="toBeEncrypted">
/// The stream whose contents are to be encrypted.
/// </param>
/// <param name="instructions">
/// The instruction that will be used to encrypt the object data.
/// </param>
/// <returns>
/// Encrypted stream, i.e input stream wrapped into encrypted stream
/// </returns>
internal static Stream EncryptRequestUsingInstructionV2(Stream toBeEncrypted, EncryptionInstructions instructions)
{
Stream gcmEncryptStream = new AesGcmEncryptStream(toBeEncrypted, instructions.EnvelopeKey, instructions.InitializationVector, DefaultTagBitsLength);
return(gcmEncryptStream);
}
