(PureBasic) Load EC Public Key from X,Y Values (easier)

Demonstrates how to load an ECDSA public key from X and Y values using the LoadEcdsa method introduced in Chilkat v9.5.0.85.

Chilkat PureBasic Module Download Chilkat PureBasic Module

IncludeFile "CkPublicKey.pb"

Procedure ChilkatExample()

    ; Note: This example requires Chilkat v9.5.0.85 or greater.

    success.i

    ; We have the following x and y values in hex (for an EC point on the P-256 curve).
    x.s = "1ccbe91c075fc7f4f033bfa248db8fccd3565de94bbfb12f3c59ff46c271bf83"
    y.s = "ce4014c68811f9a21a1fdb2c0e6113e06db7ca93b7404e78dc7ccd5ca89a4ca9"

    pubkey.i = CkPublicKey::ckCreate()
    If pubkey.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    success = CkPublicKey::ckLoadEcdsa(pubkey,"secp256r1",x,y)
    If success = 0
        Debug CkPublicKey::ckLastErrorText(pubkey)
        CkPublicKey::ckDispose(pubkey)
        ProcedureReturn
    EndIf

    Debug "Success."


    CkPublicKey::ckDispose(pubkey)


    ProcedureReturn
EndProcedure