Reputation: 43

problem generating pgp keys?

I'm using RSACryptoServiceProvider I've generated public key and private key. The keys generated by it are in the following format:

Public key:

<RSAKeyValue>
    <Modulus>m9bAoh2...eGNKYs=</Modulus>
    <Exponent>AQAB</Exponent>
</RSAKeyValue>

Private key:

<RSAKeyValue>
    <Modulus>m9bAo...ZAIeGNKYs=</Modulus>
    <Exponent>AQAB</Exponent>
    <P>xGj/UcXs...R1lmeVQ==</P>
    <Q>yx6e18aP...GXzXIXw==</Q>
    <DP>NyxvnJ...1xAsEyQ==</DP>
    <DQ>La17Jycd...FhApEqwznQ==</DQ>
    <InverseQ>JrG7WCT...Hp3OWA==</InverseQ>
    <D>RdWsOFn....KL699Vh6HK0=</D>
</RSAKeyValue>

but using PGP Desktop i've generated keys like this -

Public key:

mQCNBEoOlp8BBACi/3EvBZ83ZduvG6YHu5F0P7Z3xOnpIsaPvTk0q+dnjwDUa5sU 
lEFbUZgDXSz7ZRhyiNqUOy+IG3ghPxpiKGBtldVpi33qaFCCEBiqsxRRpVCLgTUK 
HP2kH5ysrlFWkxTo 
=a4t9

Private key:

lQHgBEoOlp8BBACi/3EvBZ83ZduvG6YHu5F0P7Z3xOnpIsaPvTk0q+dnjwDUa5sU 
lEFbUZgDXSz7ZRhyiNqUOy+IG3ghPxpiKGBtldVpi33qaFCCEBiqsxRRpVCLgTUK 
waBnEitQti3XgUUEZnz/rnXcQVM0QFBe6H5x8fMDUw== 
=CVPD

So when I'm passing the keys generated by PGP Desktop it is able to do encryption and decryption perfectly but when im passing the keys generated by RSACryptoServiceProvider I'm not able to encrypt and decrypt?

Can anyone please tell me how to generate keys in the pattern generated by PGP?

Upvotes: 2

Answers (3)

Samir

Reputation: 81

thanks for the good methods, was faffing around the web for them since quite a while,

some correction tho...

After a call to

ExportKeyPair(out1, out2, kp.Public, kp.Private, username, password.ToCharArray(), true);

please also call

out1.Close();
out2.Close();

A sample private key generated from the above routine

thanks once again for the above methods.

Upvotes: 2

Emmanuel

Reputation: 1531

using the bouncycastle c# library this is how i generate key pairs.



public void GenerateKey(string username, string password, string keyStoreUrl)
        {
            IAsymmetricCipherKeyPairGenerator kpg = new RsaKeyPairGenerator();
            kpg.Init(new RsaKeyGenerationParameters(BigInteger.ValueOf(0x13), new SecureRandom(), 1024, 8));
            AsymmetricCipherKeyPair kp = kpg.GenerateKeyPair();

            FileStream out1 = new FileInfo(string.Format("{0}secret.asc", keyStoreUrl)).OpenWrite();
            FileStream out2 = new FileInfo(string.Format("{0}pub.asc", keyStoreUrl)).OpenWrite();

            ExportKeyPair(out1, out2, kp.Public, kp.Private, username, password.ToCharArray(), true);

        }

private static void ExportKeyPair(
            Stream secretOut,
            Stream publicOut,
            AsymmetricKeyParameter publicKey,
            AsymmetricKeyParameter privateKey,
            string identity,
            char[] passPhrase,
            bool armor)
        {
            if (armor)
            {
                secretOut = new ArmoredOutputStream(secretOut);
            }

            PgpSecretKey secretKey = new PgpSecretKey(
                PgpSignature.DefaultCertification,
                PublicKeyAlgorithmTag.RsaGeneral,
                publicKey,
                privateKey,
                DateTime.Now,
                identity,
                SymmetricKeyAlgorithmTag.Cast5,
                passPhrase,
                null,
                null,
                new SecureRandom()
                //                ,"BC"
                );

            secretKey.Encode(secretOut);

            secretOut.Close();

            if (armor)
            {
                publicOut = new ArmoredOutputStream(publicOut);
            }

            PgpPublicKey key = secretKey.PublicKey;

            key.Encode(publicOut);

            publicOut.Close();
        }

and it generate private and public keys in armored ASCII format such as.

Upvotes: 9

cjk

Reputation: 46425

RSA and PGP are different.

What you are essentially asking is how do I run my petrol car on diesel? The answer is you can't.

You should look into PGP CommandLine - this allows you to perform PGP commands from the command line.

Upvotes: 5

problem generating pgp keys?

Answers (3)

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