(Lianja) Load EC Public Key from X,Y Values

Demonstrates how to load an EC public key from X and Y values.

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// We have the following x and y values in base64 (for an EC point on the P-256 curve).
x = "Dn7uB1O7kgk74G6qfQwFJESeDnxO6lLjGZFWZJE16tw"
y = "iOWA5DInzK6nuUGvHJbMVq1Dpj248FqSV2teN3HzmhU"

// Build a JWK that looks like this:

// {
//   "kty": "EC",
//   "crv": "P-256",
//   "x": "Dn7uB1O7kgk74G6qfQwFJESeDnxO6lLjGZFWZJE16tw",
//   "y": "iOWA5DInzK6nuUGvHJbMVq1Dpj248FqSV2teN3HzmhU"
// }

loJson = createobject("CkJsonObject")
loJson.UpdateString("kty","EC")
loJson.UpdateString("crv","P-256")
loJson.UpdateString("x",x)
loJson.UpdateString("y",y)

// Load from the JWK.
loPubkey = createobject("CkPublicKey")
llSuccess = loPubkey.LoadFromString(loJson.Emit())
if (llSuccess = .F.) then
    ? loPubkey.LastErrorText
    release loJson
    release loPubkey
    return
endif

? "Success."


release loJson
release loPubkey