(C# UWP/WinRT) Load RSA Public Key from Hex Modulus and Exponent

Load an RSA public key from a hex modulus and exponent.

Chilkat Universal Windows Platform (UWP) / WinRT Downloads Chilkat for the Universal Windows Platform (UWP)

bool success;

// Load a 128-byte (1024-bit) modulus + exponent into a Chilkat public key object..
string modulus = "BF5F4AF9A018B5F324A0C10448C0D3248D9BE78967FDC551A27876AC5789ADCBA8245D3D942AE3799563D895DA801E765D225A54FA15DAB2C4731DD817DCF94A9AD62197074C2349442093A206234BF3747F0E88AA6F538355684CC1FB26FCE029C9050A1DAF9F507C2BABF6EFC9FB16320C8036721BE0279FBB76122C41E429";

string exponent = "00000003";

// We'll need to re-encode from hex to base64..
Chilkat.BinData bdModulus = new Chilkat.BinData();
bdModulus.AppendEncoded(modulus,"hex");
Chilkat.BinData bdExponent = new Chilkat.BinData();
bdExponent.AppendEncoded(exponent,"hex");

Chilkat.Xml xml = new Chilkat.Xml();
xml.Tag = "RsaKeyValue";
xml.NewChild2("Modulus",bdModulus.GetEncoded("base64"));
xml.NewChild2("Exponent",bdExponent.GetEncoded("base64"));

// Now load into the pubkey object..
Chilkat.PublicKey pubkey = new Chilkat.PublicKey();
success = pubkey.LoadFromString(xml.GetXml());
if (success == false) {
    Debug.WriteLine(pubkey.LastErrorText);
    return;
}

Debug.WriteLine("Success.");