public IActionResult OnPostConvertPEM(string xmldata)
{
XMLData = xmldata;
RSACryptoServiceProvider provider = new RSACryptoServiceProvider();
try
{
provider.FromXmlString(xmldata);
byte[] ber = null;
if (provider.PublicOnly)
{
ber = provider.ExportSubjectPublicKeyInfo();
PEMData = MakePem(ber, "PUBLIC KEY");
}
else
{
ber = provider.ExportPkcs8PrivateKey();
PEMData = MakePem(ber, "PRIVATE KEY");
var berRSA = provider.ExportRSAPrivateKey();
RSAData = MakePem(berRSA, "RSA PRIVATE KEY");
}
}
catch (Exception ex) {
ErrorJS = "<script>toastr.error('" + ex.Message.Replace("'", "¡¦") + "')</script>";
}
return(Page());
}
private const string XmlPublicAndPrivateKeyPattern = "(\\s*<\\s*RSAKeyValue\\s*>\\s*(?:\\s*<\\s*Modulus\\s*>\\s*[a-zA-Z0-9\\+\\/]+={0,2}\\s*<\\/\\s*Modulus\\s*>()|\\s*<\\s*Exponent\\s*>\\s*[a-zA-Z0-9\\+\\/]+={0,2}\\s*<\\/\\s*Exponent\\s*>()|\\s*<\\s*P\\s*>\\s*[a-zA-Z0-9\\+\\/]+={0,2}\\s*<\\/\\s*P\\s*>()|\\s*<\\s*Q\\s*>\\s*[a-zA-Z0-9\\+\\/]+={0,2}\\s*<\\/\\s*Q\\s*>()|\\s*<\\s*DP\\s*>\\s*[a-zA-Z0-9\\+\\/]+={0,2}\\s*<\\/\\s*DP\\s*>()|\\s*<\\s*DQ\\s*>\\s*[a-zA-Z0-9\\+\\/]+={0,2}\\s*<\\/\\s*DQ\\s*>()|\\s*<\\s*InverseQ\\s*>\\s*[a-zA-Z0-9\\+\\/]+={0,2}\\s*<\\/\\s*InverseQ\\s*>()|\\s*<\\s*D\\s*>\\s*[a-zA-Z0-9\\+\\/]+={0,2}\\s*<\\/\\s*D\\s*>()){8}\\s*<\\/\\s*RSAKeyValue\\s*>\\s*\\2\\3\\4\\5\\6\\7\\8\\9)|(\\s*<\\s*RSAKeyValue\\s*>\\s*(?:\\s*<\\s*Modulus\\s*>\\s*[a-zA-Z0-9\\+\\/]+={0,2}\\s*<\\/\\s*Modulus\\s*>()|\\s*<\\s*Exponent\\s*>\\s*[a-zA-Z0-9\\+\\/]+={0,2}\\s*<\\/\\s*Exponent\\s*>()){2}\\s*<\\/\\s*RSAKeyValue\\s*>\\s*\\11\\12)"; //https://regex101.com/r/fQV2VN/4 (\s*<\s*RSAKeyValue\s*>\s*(?:\s*<\s*Modulus\s*>\s*[a-zA-Z0-9\+\/]+={0,2}\s*<\/\s*Modulus\s*>()|\s*<\s*Exponent\s*>\s*[a-zA-Z0-9\+\/]+={0,2}\s*<\/\s*Exponent\s*>()|\s*<\s*P\s*>\s*[a-zA-Z0-9\+\/]+={0,2}\s*<\/\s*P\s*>()|\s*<\s*Q\s*>\s*[a-zA-Z0-9\+\/]+={0,2}\s*<\/\s*Q\s*>()|\s*<\s*DP\s*>\s*[a-zA-Z0-9\+\/]+={0,2}\s*<\/\s*DP\s*>()|\s*<\s*DQ\s*>\s*[a-zA-Z0-9\+\/]+={0,2}\s*<\/\s*DQ\s*>()|\s*<\s*InverseQ\s*>\s*[a-zA-Z0-9\+\/]+={0,2}\s*<\/\s*InverseQ\s*>()|\s*<\s*D\s*>\s*[a-zA-Z0-9\+\/]+={0,2}\s*<\/\s*D\s*>()){8}\s*<\/\s*RSAKeyValue\s*>\s*\2\3\4\5\6\7\8\9)|(\s*<\s*RSAKeyValue\s*>\s*(?:\s*<\s*Modulus\s*>\s*[a-zA-Z0-9\+\/]+={0,2}\s*<\/\s*Modulus\s*>()|\s*<\s*Exponent\s*>\s*[a-zA-Z0-9\+\/]+={0,2}\s*<\/\s*Exponent\s*>()){2}\s*<\/\s*RSAKeyValue\s*>\s*\11\12)
public static RsaKeyPair CreateRsaKeyPair(this uint keySize, RsaKeyEncoding encoding = RsaKeyEncoding.Ber, bool indent = true)
{
RsaKeyPair result;
using (RSACryptoServiceProvider Csp = new RSACryptoServiceProvider((int)keySize))
{
switch (encoding)
{
case RsaKeyEncoding.Xml:
result = new RsaKeyPair(
publicKey: XDocument.Parse(Csp.ToXmlString(false)).ToString(indent ? SaveOptions.None : SaveOptions.DisableFormatting),
privateKey: XDocument.Parse(Csp.ToXmlString(true)).ToString(indent ? SaveOptions.None : SaveOptions.DisableFormatting)
);
break;
case RsaKeyEncoding.Json:
RSAParameters parameters = Csp.ExportParameters(true);
var pubKey = new
{
Modulus = (parameters.Modulus !).ToBase64(),
Exponent = (parameters.Exponent !).ToBase64(),
};
var privKey = new
{
Modulus = (parameters.Modulus !).ToBase64(),
Exponent = (parameters.Exponent !).ToBase64(),
P = (parameters.P !).ToBase64(),
Q = (parameters.Q !).ToBase64(),
DP = (parameters.DP !).ToBase64(),
DQ = (parameters.DQ !).ToBase64(),
InverseQ = (parameters.InverseQ !).ToBase64(),
D = (parameters.D !).ToBase64()
};
var options = new JsonSerializerOptions
{
WriteIndented = indent
};
result = new RsaKeyPair(JsonSerializer.Serialize(pubKey, options), JsonSerializer.Serialize(privKey, options));
break;
case RsaKeyEncoding.Pem:
result = new RsaKeyPair($"{RsaPemPublicKeyInitialString}{Environment.NewLine}{Csp.ExportSubjectPublicKeyInfo().ToBase64(HashExtensions.PemLineBreaksLength)}{Environment.NewLine}{RsaPemPublicKeyFinalString}",
$"{RsaPemPrivateKeyInitialString}{Environment.NewLine}{Csp.ExportPkcs8PrivateKey().ToBase64(HashExtensions.PemLineBreaksLength)}{Environment.NewLine}{RsaPemPrivateKeyFinalString}");
break;
default:
result = new RsaKeyPair(publicKey: Csp.ExportSubjectPublicKeyInfo().ToBase64(), privateKey: Csp.ExportPkcs8PrivateKey().ToBase64());
break;
}
ValidateRsaPublicKey(result.PublicKey);
ValidateRsaPrivateKey(result.PrivateKey);
return(result);
}
}
public static RsaKeyPair CreateKeyPair(uint keySize = 4096, RsaKeyEncoding encoding = RsaKeyEncoding.Ber, bool indent = true)
{
using (RSACryptoServiceProvider Csp = new RSACryptoServiceProvider((int)keySize))
{
switch (encoding)
{
case RsaKeyEncoding.Xml:
return(new RsaKeyPair(
publicKey: XDocument.Parse(Csp.ToXmlString(false)).ToString(indent ? SaveOptions.None : SaveOptions.DisableFormatting),
privateKey: XDocument.Parse(Csp.ToXmlString(true)).ToString(indent ? SaveOptions.None : SaveOptions.DisableFormatting)
));
case RsaKeyEncoding.Json:
RSAParameters parameters = Csp.ExportParameters(true);
var pubKey = new
{
Modulus = HashManager.ToBase64(parameters.Modulus !),
Exponent = HashManager.ToBase64(parameters.Exponent !),
};
var privKey = new
{
Modulus = HashManager.ToBase64(parameters.Modulus !),
Exponent = HashManager.ToBase64(parameters.Exponent !),
P = HashManager.ToBase64(parameters.P !),
Q = HashManager.ToBase64(parameters.Q !),
DP = HashManager.ToBase64(parameters.DP !),
DQ = HashManager.ToBase64(parameters.DQ !),
InverseQ = HashManager.ToBase64(parameters.InverseQ !),
D = HashManager.ToBase64(parameters.D !)
};
var options = new JsonSerializerOptions
{
WriteIndented = indent
};
return(new RsaKeyPair(JsonSerializer.Serialize(pubKey, options), JsonSerializer.Serialize(privKey, options)));
case RsaKeyEncoding.Pem:
return(new RsaKeyPair($"{RsaPemPublicKeyInitialString}\n{HashManager.ToBase64(Csp.ExportSubjectPublicKeyInfo(), HashManager.PemLineBreaksLength)}\n{RsaPemPublicKeyFinalString}",
$"{RsaPemPrivateKeyInitialString}\n{HashManager.ToBase64(Csp.ExportPkcs8PrivateKey(), HashManager.PemLineBreaksLength)}\n{RsaPemPrivateKeyFinalString}"));
default:
return(new RsaKeyPair(publicKey: HashManager.ToBase64(Csp.ExportSubjectPublicKeyInfo()), privateKey: HashManager.ToBase64(Csp.ExportPkcs8PrivateKey())));
}
}
}