Can anyone please explain the correct way to produce ASCII armored PGP
encrypted output?
Using below code, I produce binary encrypted files, and I can decrypt them. But
if ASCIIArmor == true, that produced what looked like a partial output, which I
could not decrypt. Am I applying ArmoredOutputStream() to a wrong stream?
static Stream ChainEncryptedOut(Stream outputStream)
{
PgpEncryptedDataGenerator encryptedDataGenerator = new
PgpEncryptedDataGenerator(SymmetricKeyAlgorithmTag.TripleDes, new
SecureRandom());
encryptedDataGenerator.AddMethod(EncryptionKey);
return encryptedDataGenerator.Open(ASCIIArmor ? new
ArmoredOutputStream(outputStream) : outputStream, new byte[BufferSize]);
}
static Stream ChainLiteralOut(Stream encryptedOut, FileInfo file,
long length)
{
return new PgpLiteralDataGenerator().Open(encryptedOut,
PgpLiteralData.Binary, file == null ? "" : file.Name, length, DateTime.Now);
}
Calling code:
using (Stream encryptedOut = ChainEncryptedOut(outputStream))
{
using (Stream literalOut = ChainLiteralOut(encryptedOut,
unencryptedFileInfo, inputStream.Length))
{
WriteOutput(literalOut, inputStream);
}
}
When encrypting “Hello World”, the binary output is 575 bytes long, and the
ASCII armored output is 844 bytes long, looking as follows:
-----BEGIN PGP MESSAGE-----
Version: BCPG C# v1.8.1.0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 there be more output? Should it be closed with something like “----END
PGP MESSAGE----“?
Thank you!
Alex
