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(.NET Core C#) Generate an ECC Key (Public and Private)Demonstrates how to generate an ECC key and save both public and private parts.
// 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 (ecc.LastMethodSuccess == false) { 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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