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/* NOCW */
/*
Please read the README file for condition of use, before
using this software.
Maurice Gittens <mgittens@gits.nl> January 1997
*/
#include <stdlib.h>
#include <stdio.h>
#include <strings.h>
#include <openssl/rsa.h>
#include <openssl/evp.h>
#include <openssl/objects.h>
#include <openssl/x509.h>
#include <openssl/err.h>
#include <openssl/pem.h>
#include <openssl/ssl.h>
#include "loadkeys.h"
#define PUBFILE "cert.pem"
#define PRIVFILE "privkey.pem"
#define STDIN 0
#define STDOUT 1
int main()
{
char *ct = "This the clear text";
char *buf;
char *buf2;
EVP_PKEY *pubKey;
EVP_PKEY *privKey;
int len;
ERR_load_crypto_strings();
privKey = ReadPrivateKey(PRIVFILE);
if (!privKey)
{
ERR_print_errors_fp (stderr);
exit (1);
}
pubKey = ReadPublicKey(PUBFILE);
if(!pubKey)
{
EVP_PKEY_free(privKey);
fprintf(stderr,"Error: can't load public key");
exit(1);
}
/* No error checking */
buf = malloc(EVP_PKEY_size(pubKey));
buf2 = malloc(EVP_PKEY_size(pubKey));
len = RSA_public_encrypt(strlen(ct)+1, ct, buf, pubKey->pkey.rsa,RSA_PKCS1_PADDING);
if (len != EVP_PKEY_size(pubKey))
{
fprintf(stderr,"Error: ciphertext should match length of key\n");
exit(1);
}
RSA_private_decrypt(len, buf, buf2, privKey->pkey.rsa,RSA_PKCS1_PADDING);
printf("%s\n", buf2);
EVP_PKEY_free(privKey);
EVP_PKEY_free(pubKey);
free(buf);
free(buf2);
return 0;
}
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