C

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

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

#include <C_CkPublicKey.h>

void ChilkatSample(void)
    {
    BOOL success;
    const char *x;
    const char *y;
    HCkPublicKey pubkey;

    success = FALSE;

    // 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);

    }