(Excel) Generate an ECC Key

Demonstrates how to generate an ECC key.

Download Excel Class Modules Chilkat Excel Class Modules

'  All Chilkat classes can be unlocked at once at the beginning of a program
'  by calling UnlockBundle.  It requires a Bundle unlock code.
Dim chilkatGlob As Chilkat.CkGlobal
Set chilkatGlob = Chilkat.NewCkGlobal

success = chilkatGlob.UnlockBundle("Anything for 30-day trial.")
If (success <> True) Then
    Debug.Print chilkatGlob.LastErrorText
    Exit Sub
End If

'  Create a Fortuna PRNG and seed it with system entropy.
'  This will be our source of random data for generating the ECC private key.
Dim fortuna As Chilkat.Prng
Set fortuna = Chilkat.NewPrng

entropy = fortuna.GetEntropy(32,"base64")
success = fortuna.AddEntropy(entropy,"base64")

Dim ecc As Chilkat.Ecc
Set ecc = Chilkat.NewEcc

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


Set privKey = ecc.GenEccKey("secp256r1",fortuna)
If (ecc.LastMethodSuccess <> True) Then
    Debug.Print ecc.LastErrorText
    Exit Sub
End If

Debug.Print privKey.GetXml()

'  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","myPemFiles/eccKey123.pem")
If (success <> True) Then
    Debug.Print privKey.LastErrorText
End If

Debug.Print "finished."