public static byte[] ToAsc(byte[] pgp)
{
MemoryStream ms = new MemoryStream();
var ring = new PgpPublicKeyRing(GetStream(pgp));
var armored = new ArmoredOutputStream(ms);
ring.Encode(armored);
armored.Dispose();
return(ms.ToArray());
}
public static string Sign(string hash, string keyFile, string keyPass)
{
var outStream = new MemoryStream();
var armoredStream = new ArmoredOutputStream(outStream);
var secretKey = ReadSigningKey(keyFile);
var privateKey = secretKey.ExtractPrivateKey(keyPass.ToCharArray());
var sigGen = new PgpSignatureGenerator(secretKey.PublicKey.Algorithm, HashAlgorithmTag.Sha384);
sigGen.InitSign(PgpSignature.BinaryDocument, privateKey);
foreach (string userId in secretKey.PublicKey.GetUserIds())
{
var subpacketGenerator = new PgpSignatureSubpacketGenerator();
subpacketGenerator.SetSignerUserId(false, userId);
sigGen.SetHashedSubpackets(subpacketGenerator.Generate());
break;
}
var signedStream = new BcpgOutputStream(armoredStream);
sigGen.GenerateOnePassVersion(false).Encode(signedStream);
var inStream = new MemoryStream(Encoding.ASCII.GetBytes(hash));
var literalGenerator = new PgpLiteralDataGenerator();
var literalOut = literalGenerator.Open(signedStream, PgpLiteralData.Binary, "hash", hash.Length, DateTime.Now);
int ch;
while ((ch = inStream.ReadByte()) >= 0)
{
literalOut.WriteByte((byte)ch);
sigGen.Update((byte)ch);
}
inStream.Dispose();
literalGenerator.Close();
sigGen.Generate().Encode(signedStream);
armoredStream.Dispose();
return(Encoding.ASCII.GetString(outStream.ToArray()));
}
public static string EncryptKeyFor(string aesKeyToEncrypt, string publicKeyText)
{
var publicKey = ReadPublicKey(publicKeyText);
var literalByteStream = new MemoryStream();
var literalDataGenerator = new PgpLiteralDataGenerator();
var pOut = literalDataGenerator.Open(
literalByteStream, // A stream for all the literal data
PgpLiteralData.Binary,
"key", // "filename" to store
aesKeyToEncrypt.Length, // length of clear data
DateTime.UtcNow // current time
);
pOut.Write(Encoding.ASCII.GetBytes(aesKeyToEncrypt), 0, aesKeyToEncrypt.Length);
literalDataGenerator.Close();
var encryptedDataGenerator = new PgpEncryptedDataGenerator(SymmetricKeyAlgorithmTag.Aes256, new SecureRandom());
encryptedDataGenerator.AddMethod(publicKey);
byte[] literalBytes = literalByteStream.ToArray();
MemoryStream encryptedStream = new MemoryStream();
var armoredStream = new ArmoredOutputStream(encryptedStream);
Stream cOut = encryptedDataGenerator.Open(armoredStream, literalBytes.Length);
cOut.Write(literalBytes, 0, literalBytes.Length); // obtain the actual bytes from the compressed stream
cOut.Dispose();
armoredStream.Dispose();
return(Encoding.ASCII.GetString(encryptedStream.ToArray()));
}
