Chilkat Examples

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C# UWP/WinRT Examples


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(C# UWP/WinRT) Generate an ECC Key (Public and Private)

Demonstrates how to generate an ECC key and save both public and private parts.

Chilkat Universal Windows Platform (UWP) / WinRT Downloads

Chilkat for the Universal Windows Platform (UWP)

//  This example requires the Chilkat API to have been previously unlocked.
//  See Global Unlock Sample for sample code.

//  Create a Fortuna PRNG and seed it with system entropy.
//  This will be our source of random data for generating the ECC private key.
Chilkat.Prng fortuna = new Chilkat.Prng();
string entropy = fortuna.GetEntropy(32,"base64");
bool success = fortuna.AddEntropy(entropy,"base64");

Chilkat.Ecc ecc = new Chilkat.Ecc();

//  Generate a random ECC private key on the secp256r1 curve.
//  Chilkat also supports other curves, such as secp384r1, secp521r1, and secp256k1.

Chilkat.PrivateKey privKey = ecc.GenEccKey("secp256r1",fortuna);
if (privKey == null ) {
    Debug.WriteLine(ecc.LastErrorText);
    return;
}

//  Save the private key to PKCS8 encrypted PEM
//  (The private key can be saved in a variety of different formats. See the online reference documentation.)
success = privKey.SavePkcs8EncryptedPemFile("pemPassword","qa_output/eccPrivKey.pem");
if (success != true) {
    Debug.WriteLine(privKey.LastErrorText);
}

//  The private key PEM looks like this:

//  	-----BEGIN ENCRYPTED PRIVATE KEY-----
//  	MIHFMEAGCSqGSIb3DQEFDTAzMBsGCSqGSIb3DQEFDDAOBAhUmn+1/lwCIwICCAAw
//  	FAYIKoZIhvcNAwcECPlyNXAXZO+oBIGAIvxvTENXJWbrCwSjh0QNxLecBotUpfI5
//  	auOonLmwVMyt1ahMmNyVo/D+pnKQSE41Fg8fApM0DCDKZUOVCCcK1qirIsMPQkGp
//  	klPJbvrQRVYgzBtU31uNB5y2wqhrIeepal1HXBvbkUK0nfJMbcdz/XAEIQu2HhTD
//  	t6LMScPQld4=
//  	-----END ENCRYPTED PRIVATE KEY-----

//  Now get the public key part from the private key.
//  (A public key is actually a subset of the private key.)
Chilkat.PublicKey pubKey = privKey.GetPublicKey();

//  Save the public key to a PEM file.
//  (The public key can be saved in a variety of different formats. See the online reference documentation.)
//  For ECC keys, the 1st argument (bPreferPkcs1) is ignored and unused.
bool bPreferPkcs1 = false;
success = pubKey.SavePemFile(bPreferPkcs1,"qa_output/eccPubKey.pem");

//  The public key PEM looks like this:

//  	-----BEGIN PUBLIC KEY-----
//  	MIIBSzCCAQMGByqGSM49AgEwgfcCAQEwLAYHKoZIzj0BAQIhAP////8AAAABAAAA
//  	AAAAAAAAAAAA////////////////MFsEIP////8AAAABAAAAAAAAAAAAAAAA////
//  	///////////8BCBaxjXYqjqT57PrvVV2mIa8ZR0GsMxTsPY7zjw+J9JgSwMVAMSd
//  	NgiG5wSTamZ44ROdJreBn36QBEEEaxfR8uEsQkf4vOblY6RA8ncDfYEt6zOg9KE5
//  	RdiYwpZP40Li/hp/m47n60p8D54WK84zV2sxXs7LtkBoN79R9QIhAP////8AAAAA
//  	//////////+85vqtpxeehPO5ysL8YyVRAgEBA0IABGdOH8uM6SfX3mdV+TR0mWp2
//  	gfVRPlxWxwhOiowuNByBxmQz7ZR4CJY1XcN2zkUo5pzW73ZhGwgd2XTOvqPqG40=
//  	-----END PUBLIC KEY-----
// 

Debug.WriteLine("finished.");

 

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