i2pd/tests/test-blinding.cpp

#include <cassert>
#include <memory>
#include <string.h>
#include "Blinding.h"
#include "Identity.h"
#include "Timestamp.h"

using namespace i2p::data;
using namespace i2p::util;
using namespace i2p::crypto;

void BlindTest (SigningKeyType sigType)
{
	auto keys = PrivateKeys::CreateRandomKeys (sigType);
	BlindedPublicKey blindedKey (keys.GetPublic ());
	auto timestamp = GetSecondsSinceEpoch ();	
	char date[9];
	GetDateString (timestamp, date);
	uint8_t blindedPriv[64], blindedPub[128]; 
	auto publicKeyLen = blindedKey.BlindPrivateKey (keys.GetSigningPrivateKey (), date, blindedPriv, blindedPub);
	uint8_t blindedPub1[128];	
	blindedKey.GetBlindedKey (date, blindedPub1);
	// check if public key produced from private blinded key matches blided public key
	assert (!memcmp (blindedPub, blindedPub1, publicKeyLen));
	// try to sign and verify
	std::unique_ptr<Signer> blindedSigner (PrivateKeys::CreateSigner (sigType, blindedPriv));
	uint8_t buf[100], signature[128];
	memset (buf, 1, 100);
	blindedSigner->Sign (buf, 100, signature);	
	std::unique_ptr<Verifier> blindedVerifier (IdentityEx::CreateVerifier (sigType));
	blindedVerifier->SetPublicKey (blindedPub1);
	assert (blindedVerifier->Verify (buf, 100, signature));		
}

int main ()
{
	// RedDSA test	
	BlindTest (SIGNING_KEY_TYPE_REDDSA_SHA512_ED25519);
	// P256 test
	BlindTest (SIGNING_KEY_TYPE_ECDSA_SHA256_P256);
	// P384 test
	BlindTest (SIGNING_KEY_TYPE_ECDSA_SHA384_P384);
}