pgp

I have a PGP file named 'filename.txt.pgp' that I need to decrypt. When I run decryption from command-line it asks me only for the password. I use gpg command: gpg filename.txt.pgp The password is enough and my file is decrypted. I can read it's content. Now, I should create an utility in Java. After research I see that Bouncy Castle library is my best choice. But all the examples in Java I can find use public/private key file which I do not have. Could you please help me with an example in Java that decrypts PGP file using just a password? Thank you. If you look at the documentation section

I am asking from a "more secure" perspective. I can imagine a scenario with two required private keys needed for decryption scenarios that may make this an attractive model. I believe it is not adding any additional security other than having to compromise two different private keys. I think that if it was any more secure than encrypting it one million times would be the best way to secure information. Update a couple of years later: As Rasmus Faber points out 3DES encryption was added to extend the life of DES encryption which had widespread adoption. Encrypting twice using the same key

I was trying to decrypt this sample file given by the client, using a class called PgpDecrypt. But when the code comes to this line: Stream clear = pbe.GetDataStream(privKey); it returns an error: exception decrypting secret key Here's my decryption code: PgpDecrypt test = new PgpDecrypt(string.Concat(pathh, "TestDecryptionFile"), string.Concat(pathh, "mypgpprivatekey.key"), "mypassphrase", @"d:/test/", string.Concat(pathh, "clientpublickey.key")); FileStream fs = File.Open(string.Concat(pathh, "TestDecryptionFile"), FileMode.Open); test.Decrypt(fs, @"d:\test\"); I am using BouncyCastle as my

I have been looking all day yesterday, and I can't seem to find a working example of PGP decryption using Bouncy Castle in c# Finally got it to work. The main issue I had with other samples was the fact that the private key ring I had included a key for signing which was coming up first when trying to load the key for decryption. This is why why I had to add a check for the ElGamalPrivateKeyParameters type on the key. Below is my code. Not very clean, but it works. private static PgpPrivateKey GetPrivateKey(string privateKeyPath) { using (Stream keyIn = File.OpenRead(privateKeyPath)) using

Does anyone have an example of how I can sign a txt file, using a PGP key in C# and Bouncy Castle library. Not to encrypt the file, only to add a signature. public void SignFile(String fileName, Stream privateKeyStream, String privateKeyPassword, Stream outStream) { PgpSecretKey pgpSec = ReadSigningSecretKey(privateKeyStream); PgpPrivateKey pgpPrivKey = null; pgpPrivKey = pgpSec.ExtractPrivateKey(privateKeyPassword.ToCharArray()); PgpSignatureGenerator sGen = new PgpSignatureGenerator(pgpSec.PublicKey.Algorithm, KeyStore.ParseHashAlgorithm(this.hash.ToString())); sGen.InitSign(PgpSignature

I'd like to (PGP/GPG) sign python code. Yes, I have read this and many other sites that talk about protecting and obfuscating python code - this all is not what I want. I DON'T want to obfuscate code. I want customers and users to see the code, they could modify code, copy it and make derivative work, I'd like to have the software under the GPLv3. But I want to have plugins that are "signed", so they can be kind of trusted during execution. Is this possible in Python? Can I import a library after checking its gpg signing? What would be easy: check the gpg signing of a file, and then load it