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#include "tests.h"
#include "test_pubkey.h"
#include <botan/auto_rng.h>
#include <botan/pubkey.h>
#include <botan/dsa.h>
#include <botan/hex.h>
#include <iostream>
#include <fstream>
using namespace Botan;
namespace {
size_t dsa_sig_kat(const std::string& p,
const std::string& q,
const std::string& g,
const std::string& x,
const std::string& hash,
const std::string& msg,
const std::string& nonce,
const std::string& signature)
{
AutoSeeded_RNG rng;
BigInt p_bn(p), q_bn(q), g_bn(g), x_bn(x);
DL_Group group(p_bn, q_bn, g_bn);
DSA_PrivateKey privkey(rng, group, x_bn);
DSA_PublicKey pubkey = privkey;
const std::string padding = "EMSA1(" + hash + ")";
PK_Verifier verify(pubkey, padding);
PK_Signer sign(privkey, padding);
return validate_signature(verify, sign, "DSA/" + hash, msg, nonce, signature);
}
}
size_t test_dsa()
{
std::ifstream dsa_sig(TEST_DATA_DIR "/dsa.vec");
size_t fails = 0;
fails += run_tests_bb(dsa_sig, "DSA Signature", "Signature", true,
[](std::map<std::string, std::string> m) -> size_t
{
return dsa_sig_kat(m["P"], m["Q"], m["G"], m["X"], m["Hash"], m["Msg"], m["Nonce"], m["Signature"]);
});
return fails;
}
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