private static Stream ChainEncryptedOut(Stream outputStream, PgpEncryptionKeys mEncryptionKeys)
{
PgpEncryptedDataGenerator encryptedDataGenerator;
encryptedDataGenerator = new PgpEncryptedDataGenerator(SymmetricKeyAlgorithmTag.TripleDes,
new SecureRandom());
encryptedDataGenerator.AddMethod(mEncryptionKeys.PublicKey);
return(encryptedDataGenerator.Open(outputStream, new byte[BufferSize]));
}
/*
* Encrypt and sign the file pointed to by unencryptedFileInfo and
*/
public static void EncryptAndSign(string inputFile, string outputFile, string publicKeyFile,
string privateKeyFile, string passPhrase, bool armor)
{
var encryptionKeys = new PgpEncryptionKeys(publicKeyFile, privateKeyFile, passPhrase);
if (!File.Exists(inputFile))
{
throw new FileNotFoundException($"Input file [{inputFile}] does not exist.");
}
if (!File.Exists(publicKeyFile))
{
throw new FileNotFoundException($"Public Key file [{publicKeyFile}] does not exist.");
}
if (!File.Exists(privateKeyFile))
{
throw new FileNotFoundException($"Private Key file [{privateKeyFile}] does not exist.");
}
if (String.IsNullOrEmpty(passPhrase))
{
throw new ArgumentNullException("Invalid Pass Phrase.");
}
if (encryptionKeys == null)
{
throw new ArgumentNullException("Encryption Key not found.");
}
using (Stream outputStream = File.Create(outputFile))
{
if (armor)
{
using (var armoredOutputStream = new ArmoredOutputStream(outputStream))
{
OutputEncrypted(inputFile, armoredOutputStream, encryptionKeys);
}
}
else
{
OutputEncrypted(inputFile, outputStream, encryptionKeys);
}
}
}
private static void OutputEncrypted(string inputFile, Stream outputStream, PgpEncryptionKeys encryptionKeys)
{
using (Stream encryptedOut = ChainEncryptedOut(outputStream, encryptionKeys))
{
var unencryptedFileInfo = new FileInfo(inputFile);
using (Stream compressedOut = ChainCompressedOut(encryptedOut))
{
PgpSignatureGenerator signatureGenerator = InitSignatureGenerator(compressedOut, encryptionKeys);
using (Stream literalOut = ChainLiteralOut(compressedOut, unencryptedFileInfo))
{
using (FileStream inputFileStream = unencryptedFileInfo.OpenRead())
{
WriteOutputAndSign(compressedOut, literalOut, inputFileStream, signatureGenerator);
inputFileStream.Close();
}
}
}
}
}
private static PgpSignatureGenerator InitSignatureGenerator(Stream compressedOut,
PgpEncryptionKeys mEncryptionKeys)
{
const bool isCritical = false;
const bool isNested = false;
PublicKeyAlgorithmTag tag = mEncryptionKeys.SecretKey.PublicKey.Algorithm;
var pgpSignatureGenerator = new PgpSignatureGenerator(tag, HashAlgorithmTag.Sha1);
pgpSignatureGenerator.InitSign(PgpSignature.BinaryDocument, mEncryptionKeys.PrivateKey);
foreach (string userId in mEncryptionKeys.SecretKey.PublicKey.GetUserIds())
{
var subPacketGenerator = new PgpSignatureSubpacketGenerator();
subPacketGenerator.SetSignerUserId(isCritical, userId);
pgpSignatureGenerator.SetHashedSubpackets(subPacketGenerator.Generate());
// Just the first one!
break;
}
pgpSignatureGenerator.GenerateOnePassVersion(isNested).Encode(compressedOut);
return(pgpSignatureGenerator);
}
private static void OutputEncrypted(string inputFile, Stream outputStream, PgpEncryptionKeys encryptionKeys)
{
using (Stream encryptedOut = ChainEncryptedOut(outputStream, encryptionKeys))
{
var unencryptedFileInfo = new FileInfo(inputFile);
using (Stream compressedOut = ChainCompressedOut(encryptedOut))
{
PgpSignatureGenerator signatureGenerator = InitSignatureGenerator(compressedOut, encryptionKeys);
using (Stream literalOut = ChainLiteralOut(compressedOut, unencryptedFileInfo))
{
using (FileStream inputFileStream = unencryptedFileInfo.OpenRead())
{
WriteOutputAndSign(compressedOut, literalOut, inputFileStream, signatureGenerator);
inputFileStream.Close();
}
}
}
}
}
private static PgpSignatureGenerator InitSignatureGenerator(Stream compressedOut,
PgpEncryptionKeys mEncryptionKeys)
{
const bool isCritical = false;
const bool isNested = false;
PublicKeyAlgorithmTag tag = mEncryptionKeys.SecretKey.PublicKey.Algorithm;
var pgpSignatureGenerator = new PgpSignatureGenerator(tag, HashAlgorithmTag.Sha1);
pgpSignatureGenerator.InitSign(PgpSignature.BinaryDocument, mEncryptionKeys.PrivateKey);
foreach (string userId in mEncryptionKeys.SecretKey.PublicKey.GetUserIds())
{
var subPacketGenerator = new PgpSignatureSubpacketGenerator();
subPacketGenerator.SetSignerUserId(isCritical, userId);
pgpSignatureGenerator.SetHashedSubpackets(subPacketGenerator.Generate());
// Just the first one!
break;
}
pgpSignatureGenerator.GenerateOnePassVersion(isNested).Encode(compressedOut);
return pgpSignatureGenerator;
}
private static Stream ChainEncryptedOut(Stream outputStream, PgpEncryptionKeys mEncryptionKeys)
{
PgpEncryptedDataGenerator encryptedDataGenerator;
encryptedDataGenerator = new PgpEncryptedDataGenerator(SymmetricKeyAlgorithmTag.TripleDes,
new SecureRandom());
encryptedDataGenerator.AddMethod(mEncryptionKeys.PublicKey);
return encryptedDataGenerator.Open(outputStream, new byte[BufferSize]);
}
/*
* Encrypt and sign the file pointed to by unencryptedFileInfo and
*/
public static void EncryptAndSign(string inputFile, string outputFile, string publicKeyFile,
string privateKeyFile, string passPhrase, bool armor)
{
var encryptionKeys = new PgpEncryptionKeys(publicKeyFile, privateKeyFile, passPhrase);
if (!File.Exists(inputFile))
throw new FileNotFoundException(String.Format("Input file [{0}] does not exist.", inputFile));
if (!File.Exists(publicKeyFile))
throw new FileNotFoundException(String.Format("Public Key file [{0}] does not exist.", publicKeyFile));
if (!File.Exists(privateKeyFile))
throw new FileNotFoundException(String.Format("Private Key file [{0}] does not exist.", privateKeyFile));
if (String.IsNullOrEmpty(passPhrase))
throw new ArgumentNullException("Invalid Pass Phrase.");
if (encryptionKeys == null)
throw new ArgumentNullException("Encryption Key not found.");
using (Stream outputStream = File.Create(outputFile))
{
if (armor)
using (var armoredOutputStream = new ArmoredOutputStream(outputStream))
{
OutputEncrypted(inputFile, armoredOutputStream, encryptionKeys);
}
else
OutputEncrypted(inputFile, outputStream, encryptionKeys);
}
}
