#include <stdio.h>

#include <wolfssl/options.h>
//#include <wolfssl/wolfcrypt/dsa.h>
#include <wolfssl/wolfcrypt/asn_public.h>
#include <wolfssl/wolfcrypt/ed25519.h>
#include <wolfssl/ssl.h>
#define USE_CERT_BUFFERS_ED
#include "test_keys.h"

static int err_sys(const char* msg, int es);

static int err_sys(const char* msg, int es)
{
    printf("%s error = %d\n", msg, es);

    exit(-1);
}

int
main(int argc, char* argv[])
{

    int ret = -1000;
    int verify;
    ed25519_key edPublicKey;
    ed25519_key edPrivateKey;

    byte message[] = "Hi how are you?\n";
    byte sigOut[ED25519_SIG_SIZE];
    word32 sigOutSz = sizeof(sigOut);

    wolfSSL_Debugging_ON();


/*--------------- INIT KEYS ---------------------*/
    ret = wc_ed25519_init(&edPublicKey);
    ret = wc_ed25519_init(&edPrivateKey);

    if (ret != 0) {
        printf("Error: wc_ed25519_init: %d\n", ret);
    }

/*--------------- IMPORT KEYS FROM HEADER ---------------------*/
    ret = wc_ed25519_import_public(ed_pub_key_der_32, sizeof_ed_pub_key_der_32,
                                                                  &edPublicKey);
    if (ret != 0) err_sys("Error: ED public key import failed: ", ret);

    ret = wc_ed25519_import_private_key(ed_priv_key_der_64,
                                        ED25519_KEY_SIZE,
                                        ed_priv_key_der_64 + ED25519_KEY_SIZE,
                                        ED25519_KEY_SIZE, &edPrivateKey);
    if (ret != 0) err_sys("Error: ED private key import failed: ", ret);

/*--------------- SIGN THE MESSAGE ---------------------*/
    ret = wc_ed25519_sign_msg(message, sizeof(message), sigOut, &sigOutSz,
                                                                 &edPrivateKey);
    if (ret != 0) err_sys("Error: ED sign failed: ", ret);

/*--------------- VERIFY THE MESSAGE ---------------------*/
    ret = wc_ed25519_verify_msg(sigOut, sigOutSz, message, sizeof(message),
                                                         &verify, &edPublicKey);
    if (ret != 0) err_sys("Error: Could not verify signature: ", ret);

    printf("Successfully validated signature\n");

    return 0;
}