(C) 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.
#include <C_CkPublicKey.h>
void ChilkatSample(void)
{
BOOL success;
const char *x;
const char *y;
HCkPublicKey pubkey;
// Note: This example requires Chilkat v9.5.0.85 or greater.
// We have the following x and y values in hex (for an EC point on the P-256 curve).
x = "1ccbe91c075fc7f4f033bfa248db8fccd3565de94bbfb12f3c59ff46c271bf83";
y = "ce4014c68811f9a21a1fdb2c0e6113e06db7ca93b7404e78dc7ccd5ca89a4ca9";
pubkey = CkPublicKey_Create();
success = CkPublicKey_LoadEcdsa(pubkey,"secp256r1",x,y);
if (success == FALSE) {
printf("%s\n",CkPublicKey_lastErrorText(pubkey));
CkPublicKey_Dispose(pubkey);
return;
}
printf("Success.\n");
CkPublicKey_Dispose(pubkey);
}
|