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Get EC Public Key from EC Private Key

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Demonstrates how to get an EC public key from an EC private key. AutoIt

Local $bSuccess = False

; We have an ECC private key...
; The contents of the private key PEM file look like this:

; 	-----BEGIN PRIVATE KEY-----
; 	MIGHAgEAMBMGByqGSM49AgEGCCqGSM49AwEHBG0wawIBAQQg3J8q/24D1sEKGdP9
; 	72MGYElLGpw/a56Y3t6pfON3uhShRANCAATlSmoizyhAwoYZAOuFBATl07/1RR54
; 	a1Dzfm16grxJe666AGKR+bSs24hk7TEpaeCTvT8YOOM3l+xKFg7zq6Q9
; 	-----END PRIVATE KEY-----

$oPrivKey = ObjCreate("Chilkat.PrivateKey")
$bSuccess = $oPrivKey.LoadPemFile("qa_data/ecc/secp256r1-key-pkcs8.pem")
If ($bSuccess = False) Then
    ConsoleWrite($oPrivKey.LastErrorText & @CRLF)
    Exit
EndIf

; Get the public key.
$oPubKey = ObjCreate("Chilkat.PublicKey")
$oPrivKey.ToPublicKey($oPubKey)

; Save the public key to a PEM file.
$bSuccess = $oPubKey.SavePemFile(False,"qa_data/ecc/secp256r1-pubkey.pem")
If ($bSuccess = False) Then
    ConsoleWrite($oPubKey.LastErrorText & @CRLF)
    Exit
EndIf

; The contents of the ECC public key PEM file look like this:

; 	-----BEGIN PUBLIC KEY-----
; 	MIIBSzCCAQMGByqGSM49AgEwgfcCAQEwLAYHKoZIzj0BAQIhAP////8AAAABAAAA
; 	AAAAAAAAAAAA////////////////MFsEIP////8AAAABAAAAAAAAAAAAAAAA////
; 	///////////8BCBaxjXYqjqT57PrvVV2mIa8ZR0GsMxTsPY7zjw+J9JgSwMVAMSd
; 	NgiG5wSTamZ44ROdJreBn36QBEEEaxfR8uEsQkf4vOblY6RA8ncDfYEt6zOg9KE5
; 	RdiYwpZP40Li/hp/m47n60p8D54WK84zV2sxXs7LtkBoN79R9QIhAP////8AAAAA
; 	//////////+85vqtpxeehPO5ysL8YyVRAgEBA0IABOVKaiLPKEDChhkA64UEBOXT
; 	v/VFHnhrUPN+bXqCvEl7rroAYpH5tKzbiGTtMSlp4JO9Pxg44zeX7EoWDvOrpD0=
; 	-----END PUBLIC KEY-----

ConsoleWrite("Success." & @CRLF)