Lianja Requires Chilkat v11.0.0+

Generate an ECC Key (Public and Private)

See more ECC Examples

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

llSuccess = .F.

//  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.
loFortuna = createobject("CkPrng")
lcEntropy = loFortuna.GetEntropy(32,"base64")
llSuccess = loFortuna.AddEntropy(lcEntropy,"base64")

loEcc = createobject("CkEcc")

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

loPrivKey = createobject("CkPrivateKey")
llSuccess = loEcc.GenKey("secp256r1",loFortuna,loPrivKey)
if (llSuccess = .F.) then
    ? loEcc.LastErrorText
    release loFortuna
    release loEcc
    release loPrivKey
    return
endif

//  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.)
llSuccess = loPrivKey.SavePkcs8EncryptedPemFile("pemPassword","qa_output/eccPrivKey.pem")
if (llSuccess <> .T.) then
    ? loPrivKey.LastErrorText
endif

//  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.)
loPubKey = createobject("CkPublicKey")
loPrivKey.ToPublicKey(loPubKey)

//  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.
llBPreferPkcs1 = .F.
llSuccess = loPubKey.SavePemFile(llBPreferPkcs1,"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-----
//  

? "finished."


release loFortuna
release loEcc
release loPrivKey
release loPubKey