C

Load an Ed25519 Private Key from Hex

See more Ed25519 Examples

Demonstrates how to load an Ed25519 private key from raw hex bytes.

Note: This example requires Chilkat v9.5.0.83 or greater.

C

#include <C_CkPrivateKey.h>
#include <C_CkStringBuilder.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkPrivateKey privKey;
    const char *privKeyHex;
    const char *pubKeyHex;
    HCkPrivateKey privKey2;
    HCkStringBuilder sbPubKeyHex;

    success = FALSE;

    // This example assumes the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    privKey = CkPrivateKey_Create();

    // We have the hexidecimal encoded bytes of the private key and public key:
    privKeyHex = "d4ee72dbf913584ad5b6d8f1f769f8ad3afe7c28cbf1d4fbe097a88f44755842";
    pubKeyHex = "19bf44096984cdfe8541bac167dc3b96c85086aa30b6b6cb0c5c38ad703166e1";

    // Load these values into the Chilkat private key object:
    success = CkPrivateKey_LoadEd25519(privKey,privKeyHex,pubKeyHex);
    if (success == FALSE) {
        printf("%s\n",CkPrivateKey_lastErrorText(privKey));
        CkPrivateKey_Dispose(privKey);
        return;
    }

    // ---------------------------------------------------------------
    // We don't actually need the public key.  If we pass an empty string for the public key,
    // Chilkat will automatically compute it.
    privKey2 = CkPrivateKey_Create();
    success = CkPrivateKey_LoadEd25519(privKey2,privKeyHex,"");

    // Let's get the public key to see that it computed the same value.
    sbPubKeyHex = CkStringBuilder_Create();
    privKeyHex = CkPrivateKey_getRawHex(privKey2,sbPubKeyHex);
    printf("computed public key = %s\n",CkStringBuilder_getAsString(sbPubKeyHex));

    // The output should be:
    // computed public key = 19bf44096984cdfe8541bac167dc3b96c85086aa30b6b6cb0c5c38ad703166e1


    CkPrivateKey_Dispose(privKey);
    CkPrivateKey_Dispose(privKey2);
    CkStringBuilder_Dispose(sbPubKeyHex);

    }