Unable to create RSACryptoServiceProvider [closed]

Question

I testing out your library Mail.dll

First, I created a key pair (RSA) with another software (xp_crypt).
This was generated with a 2048 bit, and with a passphrase.

So, I already have the .pem private key file, it looks like this:

-----BEGIN RSA PRIVATE KEY-----
Proc-Type: 4,ENCRYPTED
DEK-Info: DES-EDE3-CBC,FCE0E689C823BD7A

-----END RSA PRIVATE KEY-----

Now I am trying to test using your library to decrypt a hardcoded (for test)

String password = "MySecretPassword";
String pemFilename = @"C:\privatekey.pem";

Limilabs.Cryptography.PemReader pem = new Limilabs.Cryptography.PemReader();

// it fails here
RSACryptoServiceProvider rsa = pem.ReadEncryptedPrivateKeyFromFile(pemFilename, password);

This fails with the error "Unable to create RSACryptoServiceProvider - unable to import RSAParameters. Legal keys sizes are: 384-16384 (in steps of 8), Your key size is 256 bits."

This is incorrect, as I created the pair using 2048 bit.

Please advise
Thanks
Cecilia

Comments

Could you please send such pem file to our support email? You can find it in this page's footer.