с использованием библиотеки bouncycastle c # вот так я генерирую пары ключей.
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();
}
и генерирует закрытые и открытые ключи в защищенном формате ASCII, например.
-----BEGIN PGP PUBLIC KEY BLOCK-----
Version: BCPG v1.32
mIsEShU7ywEEAKtxKTtGTyUaVxFuWBpziA2l7qDKhe6jznre3DMPuzDnN4Ax573a
7s/bPOkzkK9tEUGFw+BW6F4DkKydv8SQfSN5Vvc0RFMha8X1E8jki1oXTIPA8bKK
dg8ZewZt8+Zwpt5IPAkIydmxDhMjwd71ay3p1ypOfROFPOfc2dBPx/0JAAUTtAdo
YW1zbWFuiJwEEAECAAYFAkoVdAsACgkQEz/ESPB1tojuIQP8CjAzJx8PoIN33pxQ
AfGF+fMCZx8/m7dDBE113aiio25BCvNKOpFwye2UK4ioKN70k24pzkyi8AZO22/s
u6GL7XEiiBZLPynBxJR4A7PzvD3KNqdQUqesu9IkPFyXz3UFH3clR0hnZtZtgnbk
L9dvj5RYVuGiS3Dcf1zoLMOiCdc=
=dFfG
-----END PGP PUBLIC KEY BLOCK-----