#include "tests.h" #include "test_pubkey.h" #include <botan/auto_rng.h> #include <botan/pubkey.h> #include <botan/elgamal.h> #include <botan/hex.h> #include <iostream> #include <fstream> using namespace Botan; namespace { size_t elgamal_kat(const std::string& p, const std::string& g, const std::string& x, const std::string& msg, std::string padding, const std::string& nonce, const std::string& ciphertext) { AutoSeeded_RNG rng; const BigInt p_bn = BigInt(p); const BigInt g_bn = BigInt(g); const BigInt x_bn = BigInt(x); DL_Group group(p_bn, g_bn); ElGamal_PrivateKey privkey(rng, group, x_bn); ElGamal_PublicKey pubkey = privkey; if(padding == "") padding = "Raw"; PK_Encryptor_EME enc(pubkey, padding); PK_Decryptor_EME dec(privkey, padding); return validate_encryption(enc, dec, "ElGamal/" + padding, msg, nonce, ciphertext); } } size_t test_elgamal() { std::ifstream elgamal_enc(PK_TEST_DATA_DIR "/elgamal.vec"); size_t fails = 0; fails += run_tests_bb(elgamal_enc, "ElGamal Encryption", "Ciphertext", true, [](std::map<std::string, std::string> m) -> size_t { return elgamal_kat(m["P"], m["G"], m["X"], m["Msg"], m["Padding"], m["Nonce"], m["Ciphertext"]); }); return fails; }