Bouncy Castle, RSA: transforming keys into a String format

Question 1

Bouncy Castle, RSA: transforming keys into a String format

c# rsa bouncycastle

Skeenor · Feb 23, 2011 · Viewed 21.9k times · Source

Answer

Answer

You could also use PemWriter to store them in PEM format:

TextWriter textWriter = new StringWriter();
PemWriter pemWriter = new PemWriter(textWriter);
pemWriter.WriteObject(keys.Private);
pemWriter.Writer.Flush();

string privateKey = textWriter.ToString();

Now privateKey contain something like this:

Question 2

I'm using RSA (Bouncy Castle API) in my C# project. I generated the keypair with this method:

RsaKeyPairGenerator r = new RsaKeyPairGenerator();
r.Init(new KeyGenerationParameters(new SecureRandom(), 1024));
AsymmetricCipherKeyPair keys = r.GenerateKeyPair();

AsymmetricKeyParameter private_key = keys.Private;
AsymmetricKeyParameter public_key = keys.Public;

Now I want to save them in a txt file but the problem is that I can't convert them to a string format. I read in another post that keys must be serialized using:

PrivateKeyInfo k = PrivateKeyInfoFactory.CreatePrivateKeyInfo(private_key);
byte[] serializedKey = k.ToAsn1Object().GetDerEncoded();

Is it the right way? If yes, what should I do after this? Just convert them from byte[] to String?

Bouncy Castle, RSA: transforming keys into a String format

Answer

Related questions