// test openssl BIGNUM, without error checking
//
#include <stdio.h>
#include <openssl/bn.h>

int main( void)
{
  char line[BUFSIZ];  BIGNUM *x = BN_new(), *y = BN_new();

  fgets( line, BUFSIZ, stdin); BN_hex2bn( &x, line);

  printf( "x = "); BN_print_fp( stdout, x); putchar('\n');

  BN_add( y, x, x);

  printf( "y = "); BN_print_fp( stdout, y); putchar('\n');
}

/* sample run:

$ echo "0753" | ./p1
x = 753
y = EA6
$

*/