unsigned char* CreatePrivateKey(size_t* len, size_t* pubLen) {
AutoSeededRandomPool rand;
InvertibleRSAFunction params;
params.GenerateRandomWithKeySize(rand,4096);
const Integer& modulus = params.GetModulus();
const Integer& exponent = params.GetPublicExponent();
const Integer& private_exponent = params.GetPrivateExponent();
size_t dlen = 4+modulus.MinEncodedSize()+4+exponent.MinEncodedSize()+4+private_exponent.MinEncodedSize();
unsigned char* izard = new unsigned char[dlen];
unsigned char* str = izard;
uint32_t cval = modulus.MinEncodedSize();
memcpy(str,&cval,4);
str+=4;
modulus.Encode(str,modulus.MinEncodedSize());
str+=modulus.MinEncodedSize();
cval = exponent.MinEncodedSize();
memcpy(str,&cval,4);
str+=4;
exponent.Encode(str,exponent.MinEncodedSize());
str+=exponent.MinEncodedSize();
cval = private_exponent.MinEncodedSize();
memcpy(str,&cval,4);
str+=4;
*pubLen = ((size_t)str-(size_t)izard);
private_exponent.Encode(str,private_exponent.MinEncodedSize());
str+=private_exponent.MinEncodedSize();
*len = dlen;
return izard;
}
int
main(int argc, char ** argv)
{
if (argc != 2) {
cout << "Usage: keygen <outputname>" << endl;
return -1;
}
AutoSeededRandomPool rng;
InvertibleRSAFunction params;
params.GenerateRandomWithKeySize(rng, 3072);
RSA::PublicKey pubkey(params);
RSA::PrivateKey privkey(params);
Integer m = params.GetModulus();
Integer p = params.GetModulus();
Integer q = params.GetModulus();
Integer priv = params.GetPrivateExponent();
Integer pub = params.GetPublicExponent();
string privname = string(argv[1]).append(".priv");
string pubname = string(argv[1]).append(".pub");
CryptoEngine::pubkeyToFile(pubkey, pubname);
CryptoEngine::privkeyToFile(privkey, privname);
cout << "Loading and verifying..." << endl;
RSA::PrivateKey newpriv = CryptoEngine::privkeyFromFile(privname);
RSA::PublicKey newpub = CryptoEngine::pubkeyFromFile(pubname);
cout << (m == newpriv.GetModulus() ? "TRUE" : "FALSE") << endl;
cout << (priv == newpriv.GetPrivateExponent() ? "TRUE" : "FALSE") << endl;
cout << (pub == newpriv.GetPublicExponent() ? "TRUE" : "FALSE") << endl;
cout << (m == newpub.GetModulus() ? "TRUE" : "FALSE") << endl;
cout << (pub == newpub.GetPublicExponent() ? "TRUE" : "FALSE") << endl;
return 0;
}
