diff --git a/Crypto.cpp b/Crypto.cpp index 0ec0f020..fe6dfa8f 100644 --- a/Crypto.cpp +++ b/Crypto.cpp @@ -148,11 +148,88 @@ namespace crypto // DH/ElGamal const int ELGAMAL_SHORT_EXPONENT_NUM_BITS = 226; + const int ELGAMAL_SHORT_EXPONENT_NUM_BYTES = ELGAMAL_SHORT_EXPONENT_NUM_BITS/8+1; const int ELGAMAL_FULL_EXPONENT_NUM_BITS = 2048; #define elgp GetCryptoConstants ().elgp #define elgg GetCryptoConstants ().elgg +#if !defined(__x86_64__) // use precalculated table + + static BN_MONT_CTX * g_MontCtx = nullptr; + static void PrecalculateElggTable (BIGNUM * table[][255], int len) // table is len's array of array of 255 bignums + { + if (len <= 0) return; + BN_CTX * ctx = BN_CTX_new (); + g_MontCtx = BN_MONT_CTX_new (); + BN_MONT_CTX_set (g_MontCtx, elgp, ctx); + auto montCtx = BN_MONT_CTX_new (); + BN_MONT_CTX_copy (montCtx, g_MontCtx); + for (int i = 0; i < len; i++) + { + table[i][0] = BN_new (); + if (!i) + BN_to_montgomery (table[0][0], elgg, montCtx, ctx); + else + BN_mod_mul_montgomery (table[i][0], table[i-1][254], table[i-1][0], montCtx, ctx); + for (int j = 1; j < 255; j++) + { + table[i][j] = BN_new (); + BN_mod_mul_montgomery (table[i][j], table[i][j-1], table[i][0], montCtx, ctx); + } + } + BN_MONT_CTX_free (montCtx); + BN_CTX_free (ctx); + } + + static void DestroyElggTable (BIGNUM * table[][255], int len) + { + for (int i = 0; i < len; i++) + for (int j = 0; j < 255; j++) + { + BN_free (table[i][j]); + table[i][j] = nullptr; + } + BN_MONT_CTX_free (g_MontCtx); + } + + static BIGNUM * ElggPow (const uint8_t * exp, int len, BIGNUM * table[][255], BN_CTX * ctx) + // exp is in Big Endian + { + if (len <= 0) return nullptr; + auto montCtx = BN_MONT_CTX_new (); + BN_MONT_CTX_copy (montCtx, g_MontCtx); + BIGNUM * res = nullptr; + for (int i = 0; i < len; i++) + { + if (res) + { + if (exp[i]) + BN_mod_mul_montgomery (res, res, table[len-1-i][exp[i]-1], montCtx, ctx); + } + else if (exp[i]) + res = BN_dup (table[len-i-1][exp[i]-1]); + } + if (res) + BN_from_montgomery (res, res, montCtx, ctx); + BN_MONT_CTX_free (montCtx); + return res; + } + + static BIGNUM * ElggPow (const BIGNUM * exp, BIGNUM * table[][255], BN_CTX * ctx) + { + auto len = BN_num_bytes (exp); + uint8_t * buf = new uint8_t[len]; + BN_bn2bin (exp, buf); + auto ret = ElggPow (buf, len, table, ctx); + delete[] buf; + return ret; + } + + BIGNUM * g_ElggTable[ELGAMAL_SHORT_EXPONENT_NUM_BYTES][255]; + +#endif + // DH DHKeys::DHKeys (): m_IsUpdated (true) @@ -173,11 +250,15 @@ namespace crypto { if (m_DH->priv_key) { BN_free (m_DH->priv_key); m_DH->priv_key = NULL; }; if (m_DH->pub_key) { BN_free (m_DH->pub_key); m_DH->pub_key = NULL; }; -#if !defined(__x86_64__) // use short exponent for non x64 +#if !defined(__x86_64__) // use short exponent for non x64 m_DH->priv_key = BN_new (); - BN_rand (m_DH->priv_key, ELGAMAL_SHORT_EXPONENT_NUM_BITS, 0, 1); -#endif + BN_rand (m_DH->priv_key, ELGAMAL_SHORT_EXPONENT_NUM_BITS, 0, 1); + auto ctx = BN_CTX_new (); + m_DH->pub_key = ElggPow (m_DH->priv_key, g_ElggTable, ctx); + BN_CTX_free (ctx); +#else DH_generate_key (m_DH); +#endif if (priv) bn2buf (m_DH->priv_key, priv, 256); if (pub) bn2buf (m_DH->pub_key, pub, 256); m_IsUpdated = true; @@ -210,12 +291,14 @@ namespace crypto BIGNUM * k = BN_new (); #if defined(__x86_64__) BN_rand (k, ELGAMAL_FULL_EXPONENT_NUM_BITS, -1, 1); // full exponent for x64 -#else - BN_rand (k, ELGAMAL_SHORT_EXPONENT_NUM_BITS, -1, 1); // short exponent of 226 bits -#endif - // caulculate a + // calculate a a = BN_new (); BN_mod_exp (a, elgg, k, elgp, ctx); +#else + BN_rand (k, ELGAMAL_SHORT_EXPONENT_NUM_BITS, -1, 1); // short exponent of 226 bits + // calculate a + a = ElggPow (k, g_ElggTable, ctx); +#endif BIGNUM * y = BN_new (); BN_bin2bn (key, 256, y); // calculate b1 @@ -716,10 +799,16 @@ namespace crypto for (int i = 0; i < numLocks; i++) m_OpenSSLMutexes.emplace_back (new std::mutex); CRYPTO_set_locking_callback (OpensslLockingCallback);*/ +#if !defined(__x86_64__) + PrecalculateElggTable (g_ElggTable, ELGAMAL_SHORT_EXPONENT_NUM_BYTES); +#endif } void TerminateCrypto () { +#if !defined(__x86_64__) + DestroyElggTable (g_ElggTable, ELGAMAL_SHORT_EXPONENT_NUM_BYTES); +#endif /* CRYPTO_set_locking_callback (nullptr); m_OpenSSLMutexes.clear ();*/ } diff --git a/README.md b/README.md index 4f167754..b985abf4 100644 --- a/README.md +++ b/README.md @@ -15,14 +15,11 @@ Donations BTC: 1K7Ds6KUeR8ya287UC4rYTjvC96vXyZbDY LTC: LKQirrYrDeTuAPnpYq5y7LVKtywfkkHi59 ANC: AQJYweYYUqM1nVfLqfoSMpUMfzxvS4Xd7z +DOGE: DNXLQKziRPAsD9H3DFNjk4fLQrdaSX893Y -Downloads ------------- - -Official binary releases could be found at: -http://i2pd.website/releases/ -older releases -http://download.i2p.io/purplei2p/i2pd/releases/ +Documentation: +-------------- +http://i2pd.readthedocs.org Supported OS ------------ diff --git a/TunnelEndpoint.cpp b/TunnelEndpoint.cpp index a3907ce5..842b624f 100644 --- a/TunnelEndpoint.cpp +++ b/TunnelEndpoint.cpp @@ -119,7 +119,7 @@ namespace tunnel if (ret.second) HandleOutOfSequenceFragment (msgID, ret.first->second); else - LogPrint (eLogError, "TunnelMessage: Incomplete message ", msgID, "already exists"); + LogPrint (eLogError, "TunnelMessage: Incomplete message ", msgID, " already exists"); } else { diff --git a/Win32/Resource.rc b/Win32/Resource.rc index bdc532e9..c885c044 100644 --- a/Win32/Resource.rc +++ b/Win32/Resource.rc @@ -52,8 +52,8 @@ END // Icon with lowest ID value placed first to ensure application icon // remains consistent on all systems. -//MAINICON ICON "ictoopie.ico" -MAINICON ICON "anke.ico" +MAINICON ICON "ictoopie.ico" +//MAINICON ICON "anke.ico" MASCOT BITMAP "Anke_700px.bmp"