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#include<tqfile.h>
#include<tqfileinfo.h>
#include"qca.h"
#include<stdio.h>
//#define USE_FILE
TQCA::RSAKey readKeyFile(const TQString &name)
{
TQCA::RSAKey k;
TQFile f(name);
if(!f.open(IO_ReadOnly)) {
printf("Unable to open %s\n", name.latin1());
return k;
}
TQByteArray der = f.readAll();
f.close();
printf("Read %s [%d bytes]\n", name.latin1(), der.size());
if(!k.fromDER(der)) {
printf("%s: Error importing DER format.\n", name.latin1());
return k;
}
char *yes = "yes";
char *no = "no";
printf("Successfully imported %s (enc=%s, dec=%s)\n",
name.latin1(),
k.havePublic() ? yes : no,
k.havePrivate() ? yes : no);
printf("Converting to DER: %d bytes\n", k.toDER().size());
printf("Converting to PEM:\n%s\n", k.toPEM().latin1());
return k;
}
int main(int argc, char **argv)
{
TQCA::init();
TQCString cs = (argc >= 2) ? argv[1] : "hello";
if(!TQCA::isSupported(TQCA::CAP_RSA))
printf("RSA not supported!\n");
else {
#ifdef USE_FILE
TQCA::RSAKey pubkey = readKeyFile("keypublic.der");
if(pubkey.isNull())
return 1;
TQCA::RSAKey seckey = readKeyFile("keyprivate.der");
if(seckey.isNull())
return 1;
#else
TQCA::RSAKey seckey = TQCA::RSA::generateKey(1024);
if(seckey.isNull())
return 1;
TQCA::RSAKey pubkey = seckey;
#endif
// encrypt some data
TQByteArray a(cs.length());
memcpy(a.data(), cs.data(), a.size());
TQCA::RSA op;
op.setKey(pubkey);
TQByteArray result;
if(!op.encrypt(a, &result)) {
printf("Error encrypting.\n");
return 1;
}
TQString rstr = TQCA::arrayToHex(result);
printf(">rsa(\"%s\") = [%s]\n", cs.data(), rstr.latin1());
// now decrypt it
op.setKey(seckey);
TQByteArray dec;
if(!op.decrypt(result, &dec)) {
printf("Error decrypting.\n");
return 1;
}
TQCString dstr;
dstr.resize(dec.size()+1);
memcpy(dstr.data(), dec.data(), dec.size());
printf("<rsa(\"%s\") = [%s]\n", rstr.latin1(), dstr.data());
}
return 0;
}
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