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#include <stdio.h>
#include <openssl/evp.h>
int main(int argc, char *argv[])
{
EVP_MD_CTX *mdctx;
const EVP_MD *md;
char mess1[] = "eyJhbGciOiJFUzI1NiIsInR5cCI6IkpXVCJ9.eyJpZCI6MSwiaXNzIjoiYXJ1bi5jb20iLCJ0aW1lX3N0ciI6Ijg6MThwbSAyNCBOb3YgMjAxNyIsIndoZXJlIjoiYWlycG9ydCJ9";
unsigned char md_value[EVP_MAX_MD_SIZE];
int md_len, i;
//OpenSSL_add_all_digests();
if(!argv[1]) {
printf("Usage: mdtest digestname\n");
exit(1);
}
md = EVP_sha256();
if(!md) {
printf("Unknown message digest %s\n", argv[1]);
exit(1);
}
mdctx = EVP_MD_CTX_create();
EVP_DigestInit_ex(mdctx, md, NULL);
EVP_DigestUpdate(mdctx, mess1, strlen(mess1));
EVP_DigestFinal_ex(mdctx, md_value, &md_len);
EVP_MD_CTX_destroy(mdctx);
printf("Dig: %s\n", md_value);
printf("Dig: %d\n", md_len);
printf("Digest is: ");
for(i = 0; i < md_len; i++)
printf("%02x", md_value[i]);
printf("\n");
d2i_ECDSA_SIG(NULL, (const unsigned char **)&md_value[0], md_len);
/* Call this once before exit. */
EVP_cleanup();
exit(0);
}
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