public RSAKeySetIdentity GenerateRSAKeyPair(RSAKeySize keySize)
{
RSAKeySetIdentity keySet;
using (var rsa = new RSACryptoServiceProvider((int)keySize))
{
byte[] rsaPrivateKeyData = rsa.ExportCspBlob(true);
byte[] rsaPublicKeyData = rsa.ExportCspBlob(false);
StringBuilder tmp = new StringBuilder(Convert.ToBase64String(rsaPrivateKeyData));
for (int i = 64; i < tmp.Length; i += 66)
{
tmp.Insert(i, "\r\n");
}
string privKey = BEGIN_RSA_PRIVATE_KEY + "\r\n" + tmp + "\r\n" + END_RSA_PRIVATE_KEY;
tmp = new StringBuilder(Convert.ToBase64String(rsaPublicKeyData));
for (int i = 64; i < tmp.Length; i += 66)
{
tmp.Insert(i, "\r\n");
}
string pubKey = BEGIN_RSA_PUBLIC_KEY + "\r\n" + tmp + "\r\n" + END_RSA_PUBLIC_KEY;
keySet = new RSAKeySetIdentity(privKey, pubKey);
}
return(keySet);
}
private static RSAKeySetIdentity GetLocalKeySetIdentity()
{
RSAKeySetIdentity rsaKeySetIdentity = new RSAKeySetIdentity(SerialNumbersSettings.ProtectedApplications.PrivateKeys.GeneralToolkitLib,
SerialNumbersSettings.ProtectedApplications.PublicKeys.GeneralToolkitLib);
return(rsaKeySetIdentity);
}
public RSAParameters ParseRSAPublicKeyOnlyInfo(RSAKeySetIdentity rsaKeySet)
{
RSAParameters rsaParams;
int startIndex = rsaKeySet.RSA_PublicKey.IndexOf(BEGIN_RSA_PUBLIC_KEY, StringComparison.Ordinal);
int endIndex = rsaKeySet.RSA_PublicKey.IndexOf(END_RSA_PUBLIC_KEY, StringComparison.Ordinal);
if (startIndex < 0 || endIndex < 0)
{
throw new ArgumentException("Invalid key data");
}
string keyData = rsaKeySet.RSA_PublicKey.Substring(startIndex + BEGIN_RSA_PUBLIC_KEY.Length, endIndex - startIndex - BEGIN_RSA_PUBLIC_KEY.Length).Replace("\r\n", "");
byte[] keyBlobBytes = Convert.FromBase64String(keyData);
using (var rsa = new RSACryptoServiceProvider())
{
rsa.ImportCspBlob(keyBlobBytes);
rsaParams = rsa.ExportParameters(false);
}
return(rsaParams);
}
