Hi group,
I am still getting uses to SSL and I need a little help with RSA. I
have a small
test program that I wrote to help me. My latest problem is how do I extract
the public key from the RSA structure to send to a SSL client?
Here is my test program:
#define _GNU_SOURCE
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <signal.h>
#include <termios.h>
#include <termio.h>
#include <time.h>
#include <unistd.h>
#include <errno.h>
#include <fcntl.h>
#include <math.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <wordexp.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>
#include <arpa/inet.h>
#include <openssl/rsa.h>
#include <openssl/rand.h>
#include <openssl/blowfish.h>
#define SAY printf( "In: '%s', Out: '%s'\n", In, Out );
#define ON_ERR(Test,M, Action) \
if( Test ) { \
sprintf(Work,"%s %s\n", M, strerror(errno) ); \
printf( "%s",Work); \
Action; }
RSA *My_RSA;
RSA *My_Key;
char *Public_Key[1024];
char In[ 100];
char Out[ 100];
char Work[100];
int RC, Size, Len, Run;
int
main( ) {
My_RSA = RSA_generate_key( 1024, 65537, NULL, NULL );
ON_ERR( !My_RSA, "generating RSA key failed\n", return 0; )
for( Run = 1; Run; ) {
printf( "Enter string: " );fflush(stdout);
fgets( In, 80, stdin );
if( In[0] == '\n' ) break;
Len = strlen(In)-1;
In[Len-1] = Out[0] = '\0';
SAY;
Size = Encrypt( );
SAY;
Decrypt( Size );
SAY; }
return 1; }
/* ------------------------------------------------------------------ */
int
Encrypt( ) {
Size = RSA_public_encrypt( strlen(In), In, Work, My_RSA,
RSA_PKCS1_PADDING );
ON_ERR( Size < 0, "Encrypt failed: ", return 0; );
printf( "New size: %d\n", Size );
return Size; }
/* ------------------------------------------------------------------ */
int
Decrypt( int Size ) {
RC = RSA_private_decrypt( Size, Work, Out, My_RSA, RSA_PKCS1_PADDING );
ON_ERR( RC < 0, "Decrypt failed: ", return 0; );
return 0; }
/* ------------------------------------------------------------------ */
--
William Estrada
[EMAIL PROTECTED]
Mt-Umunhum-Wireless.net ( http://Mt-Umunhum-Wireless.net )
Ymessenger: MrUmunhum
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