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620 lines
18 KiB
C++
620 lines
18 KiB
C++
#include <string.h>
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#include <string>
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#include <openssl/sha.h>
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#include <openssl/dh.h>
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#include <openssl/md5.h>
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#include <openssl/rand.h>
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#include "Log.h"
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//#include "TunnelBase.h"
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#include "Crypto.h"
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namespace i2p
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{
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namespace crypto
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{
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const uint8_t elgp_[256]=
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{
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0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xC9, 0x0F, 0xDA, 0xA2, 0x21, 0x68, 0xC2, 0x34,
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0xC4, 0xC6, 0x62, 0x8B, 0x80, 0xDC, 0x1C, 0xD1, 0x29, 0x02, 0x4E, 0x08, 0x8A, 0x67, 0xCC, 0x74,
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0x02, 0x0B, 0xBE, 0xA6, 0x3B, 0x13, 0x9B, 0x22, 0x51, 0x4A, 0x08, 0x79, 0x8E, 0x34, 0x04, 0xDD,
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0xEF, 0x95, 0x19, 0xB3, 0xCD, 0x3A, 0x43, 0x1B, 0x30, 0x2B, 0x0A, 0x6D, 0xF2, 0x5F, 0x14, 0x37,
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0x4F, 0xE1, 0x35, 0x6D, 0x6D, 0x51, 0xC2, 0x45, 0xE4, 0x85, 0xB5, 0x76, 0x62, 0x5E, 0x7E, 0xC6,
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0xF4, 0x4C, 0x42, 0xE9, 0xA6, 0x37, 0xED, 0x6B, 0x0B, 0xFF, 0x5C, 0xB6, 0xF4, 0x06, 0xB7, 0xED,
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0xEE, 0x38, 0x6B, 0xFB, 0x5A, 0x89, 0x9F, 0xA5, 0xAE, 0x9F, 0x24, 0x11, 0x7C, 0x4B, 0x1F, 0xE6,
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0x49, 0x28, 0x66, 0x51, 0xEC, 0xE4, 0x5B, 0x3D, 0xC2, 0x00, 0x7C, 0xB8, 0xA1, 0x63, 0xBF, 0x05,
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0x98, 0xDA, 0x48, 0x36, 0x1C, 0x55, 0xD3, 0x9A, 0x69, 0x16, 0x3F, 0xA8, 0xFD, 0x24, 0xCF, 0x5F,
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0x83, 0x65, 0x5D, 0x23, 0xDC, 0xA3, 0xAD, 0x96, 0x1C, 0x62, 0xF3, 0x56, 0x20, 0x85, 0x52, 0xBB,
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0x9E, 0xD5, 0x29, 0x07, 0x70, 0x96, 0x96, 0x6D, 0x67, 0x0C, 0x35, 0x4E, 0x4A, 0xBC, 0x98, 0x04,
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0xF1, 0x74, 0x6C, 0x08, 0xCA, 0x18, 0x21, 0x7C, 0x32, 0x90, 0x5E, 0x46, 0x2E, 0x36, 0xCE, 0x3B,
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0xE3, 0x9E, 0x77, 0x2C, 0x18, 0x0E, 0x86, 0x03, 0x9B, 0x27, 0x83, 0xA2, 0xEC, 0x07, 0xA2, 0x8F,
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0xB5, 0xC5, 0x5D, 0xF0, 0x6F, 0x4C, 0x52, 0xC9, 0xDE, 0x2B, 0xCB, 0xF6, 0x95, 0x58, 0x17, 0x18,
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0x39, 0x95, 0x49, 0x7C, 0xEA, 0x95, 0x6A, 0xE5, 0x15, 0xD2, 0x26, 0x18, 0x98, 0xFA, 0x05, 0x10,
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0x15, 0x72, 0x8E, 0x5A, 0x8A, 0xAC, 0xAA, 0x68, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF
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};
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const int elgg_ = 2;
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const uint8_t dsap_[128]=
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{
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0x9c, 0x05, 0xb2, 0xaa, 0x96, 0x0d, 0x9b, 0x97, 0xb8, 0x93, 0x19, 0x63, 0xc9, 0xcc, 0x9e, 0x8c,
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0x30, 0x26, 0xe9, 0xb8, 0xed, 0x92, 0xfa, 0xd0, 0xa6, 0x9c, 0xc8, 0x86, 0xd5, 0xbf, 0x80, 0x15,
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0xfc, 0xad, 0xae, 0x31, 0xa0, 0xad, 0x18, 0xfa, 0xb3, 0xf0, 0x1b, 0x00, 0xa3, 0x58, 0xde, 0x23,
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0x76, 0x55, 0xc4, 0x96, 0x4a, 0xfa, 0xa2, 0xb3, 0x37, 0xe9, 0x6a, 0xd3, 0x16, 0xb9, 0xfb, 0x1c,
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0xc5, 0x64, 0xb5, 0xae, 0xc5, 0xb6, 0x9a, 0x9f, 0xf6, 0xc3, 0xe4, 0x54, 0x87, 0x07, 0xfe, 0xf8,
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0x50, 0x3d, 0x91, 0xdd, 0x86, 0x02, 0xe8, 0x67, 0xe6, 0xd3, 0x5d, 0x22, 0x35, 0xc1, 0x86, 0x9c,
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0xe2, 0x47, 0x9c, 0x3b, 0x9d, 0x54, 0x01, 0xde, 0x04, 0xe0, 0x72, 0x7f, 0xb3, 0x3d, 0x65, 0x11,
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0x28, 0x5d, 0x4c, 0xf2, 0x95, 0x38, 0xd9, 0xe3, 0xb6, 0x05, 0x1f, 0x5b, 0x22, 0xcc, 0x1c, 0x93
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};
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const uint8_t dsaq_[20]=
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{
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0xa5, 0xdf, 0xc2, 0x8f, 0xef, 0x4c, 0xa1, 0xe2, 0x86, 0x74, 0x4c, 0xd8, 0xee, 0xd9, 0xd2, 0x9d,
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0x68, 0x40, 0x46, 0xb7
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};
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const uint8_t dsag_[128]=
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{
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0x0c, 0x1f, 0x4d, 0x27, 0xd4, 0x00, 0x93, 0xb4, 0x29, 0xe9, 0x62, 0xd7, 0x22, 0x38, 0x24, 0xe0,
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0xbb, 0xc4, 0x7e, 0x7c, 0x83, 0x2a, 0x39, 0x23, 0x6f, 0xc6, 0x83, 0xaf, 0x84, 0x88, 0x95, 0x81,
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0x07, 0x5f, 0xf9, 0x08, 0x2e, 0xd3, 0x23, 0x53, 0xd4, 0x37, 0x4d, 0x73, 0x01, 0xcd, 0xa1, 0xd2,
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0x3c, 0x43, 0x1f, 0x46, 0x98, 0x59, 0x9d, 0xda, 0x02, 0x45, 0x18, 0x24, 0xff, 0x36, 0x97, 0x52,
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0x59, 0x36, 0x47, 0xcc, 0x3d, 0xdc, 0x19, 0x7d, 0xe9, 0x85, 0xe4, 0x3d, 0x13, 0x6c, 0xdc, 0xfc,
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0x6b, 0xd5, 0x40, 0x9c, 0xd2, 0xf4, 0x50, 0x82, 0x11, 0x42, 0xa5, 0xe6, 0xf8, 0xeb, 0x1c, 0x3a,
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0xb5, 0xd0, 0x48, 0x4b, 0x81, 0x29, 0xfc, 0xf1, 0x7b, 0xce, 0x4f, 0x7f, 0x33, 0x32, 0x1c, 0x3c,
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0xb3, 0xdb, 0xb1, 0x4a, 0x90, 0x5e, 0x7b, 0x2b, 0x3e, 0x93, 0xbe, 0x47, 0x08, 0xcb, 0xcc, 0x82
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};
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const int rsae_ = 65537;
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const CryptoConstants& GetCryptoConstants ()
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{
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static CryptoConstants cryptoConstants (elgp_, elgg_, dsap_, dsaq_, dsag_, rsae_);
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return cryptoConstants;
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}
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bool bn2buf (const BIGNUM * bn, uint8_t * buf, size_t len)
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{
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int offset = len - BN_num_bytes (bn);
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if (offset < 0) return false;
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BN_bn2bin (bn, buf + offset);
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memset (buf, 0, offset);
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return true;
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}
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// DH
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DHKeys::DHKeys (): m_IsUpdated (true)
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{
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m_DH = DH_new ();
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m_DH->p = BN_dup (elgp);
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m_DH->g = BN_dup (elgg);
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m_DH->priv_key = NULL;
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m_DH->pub_key = NULL;
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}
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DHKeys::~DHKeys ()
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{
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DH_free (m_DH);
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}
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void DHKeys::GenerateKeys (uint8_t * priv, uint8_t * pub)
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{
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if (m_DH->priv_key) { BN_free (m_DH->priv_key); m_DH->priv_key = NULL; };
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if (m_DH->pub_key) { BN_free (m_DH->pub_key); m_DH->pub_key = NULL; };
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DH_generate_key (m_DH);
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if (priv) bn2buf (m_DH->priv_key, priv, 256);
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if (pub) bn2buf (m_DH->pub_key, pub, 256);
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m_IsUpdated = true;
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}
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const uint8_t * DHKeys::GetPublicKey ()
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{
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if (m_IsUpdated)
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{
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bn2buf (m_DH->pub_key, m_PublicKey, 256);
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BN_free (m_DH->pub_key); m_DH->pub_key = NULL;
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m_IsUpdated= false;
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}
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return m_PublicKey;
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}
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void DHKeys::Agree (const uint8_t * pub, uint8_t * shared)
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{
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BIGNUM * pk = BN_bin2bn (pub, 256, NULL);
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DH_compute_key (shared, pk, m_DH);
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BN_free (pk);
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}
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// ElGamal
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ElGamalEncryption::ElGamalEncryption (const uint8_t * key)
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{
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ctx = BN_CTX_new ();
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// select random k
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BIGNUM * k = BN_new ();
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BN_rand_range (k, elgp);
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if (BN_is_zero (k)) BN_one (k);
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// caulculate a
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a = BN_new ();
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BN_mod_exp (a, elgg, k, elgp, ctx);
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BIGNUM * y = BN_new ();
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BN_bin2bn (key, 256, y);
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// calculate b1
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b1 = BN_new ();
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BN_mod_exp (b1, y, k, elgp, ctx);
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BN_free (y);
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BN_free (k);
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}
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ElGamalEncryption::~ElGamalEncryption ()
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{
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BN_CTX_free (ctx);
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BN_free (a);
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BN_free (b1);
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}
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void ElGamalEncryption::Encrypt (const uint8_t * data, int len, uint8_t * encrypted, bool zeroPadding) const
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{
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// create m
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uint8_t m[255];
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m[0] = 0xFF;
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memcpy (m+33, data, len);
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SHA256 (m+33, 222, m+1);
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// calculate b = b1*m mod p
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BIGNUM * b = BN_new ();
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BN_bin2bn (m, 255, b);
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BN_mod_mul (b, b1, b, elgp, ctx);
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// copy a and b
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if (zeroPadding)
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{
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encrypted[0] = 0;
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bn2buf (a, encrypted + 1, 256);
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encrypted[257] = 0;
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bn2buf (b, encrypted + 258, 256);
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}
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else
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{
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bn2buf (a, encrypted, 256);
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bn2buf (b, encrypted + 256, 256);
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}
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BN_free (b);
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}
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bool ElGamalDecrypt (const uint8_t * key, const uint8_t * encrypted,
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uint8_t * data, bool zeroPadding)
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{
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BN_CTX * ctx = BN_CTX_new ();
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BIGNUM * x = BN_new (), * a = BN_new (), * b = BN_new ();
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BN_bin2bn (key, 256, x);
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BN_sub (x, elgp, x); BN_sub_word (x, 1); // x = elgp - x- 1
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BN_bin2bn (zeroPadding ? encrypted + 1 : encrypted, 256, a);
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BN_bin2bn (zeroPadding ? encrypted + 258 : encrypted + 256, 256, b);
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// m = b*(a^x mod p) mod p
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BN_mod_exp (x, a, x, elgp, ctx);
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BN_mod_mul (b, b, x, elgp, ctx);
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uint8_t m[255];
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bn2buf (b, m, 255);
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BN_free (x); BN_free (a); BN_free (b);
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BN_CTX_free (ctx);
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uint8_t hash[32];
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SHA256 (m + 33, 222, hash);
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if (memcmp (m + 1, hash, 32))
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{
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LogPrint (eLogError, "ElGamal decrypt hash doesn't match");
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return false;
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}
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memcpy (data, m + 33, 222);
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return true;
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}
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void GenerateElGamalKeyPair (uint8_t * priv, uint8_t * pub)
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{
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#if defined(__x86_64__) || defined(__i386__) || defined(_MSC_VER)
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RAND_bytes (priv, 256);
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BN_CTX * ctx = BN_CTX_new ();
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BIGNUM * p = BN_new ();
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BN_bin2bn (priv, 256, p);
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BN_mod_exp (p, elgg, p, elgp, ctx);
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bn2buf (p, pub, 256);
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BN_free (p);
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BN_CTX_free (ctx);
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#else
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DHKeys dh;
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dh.GenerateKeys (priv, pub);
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#endif
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}
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// HMAC
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const uint64_t IPAD = 0x3636363636363636;
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const uint64_t OPAD = 0x5C5C5C5C5C5C5C5C;
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void HMACMD5Digest (uint8_t * msg, size_t len, const MACKey& key, uint8_t * digest)
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// key is 32 bytes
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// digest is 16 bytes
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// block size is 64 bytes
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{
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uint64_t buf[256];
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// ikeypad
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buf[0] = key.GetLL ()[0] ^ IPAD;
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buf[1] = key.GetLL ()[1] ^ IPAD;
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buf[2] = key.GetLL ()[2] ^ IPAD;
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buf[3] = key.GetLL ()[3] ^ IPAD;
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buf[4] = IPAD;
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buf[5] = IPAD;
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buf[6] = IPAD;
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buf[7] = IPAD;
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// concatenate with msg
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memcpy (buf + 8, msg, len);
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// calculate first hash
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uint8_t hash[16]; // MD5
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MD5((uint8_t *)buf, len + 64, hash);
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// okeypad
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buf[0] = key.GetLL ()[0] ^ OPAD;
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buf[1] = key.GetLL ()[1] ^ OPAD;
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buf[2] = key.GetLL ()[2] ^ OPAD;
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buf[3] = key.GetLL ()[3] ^ OPAD;
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buf[4] = OPAD;
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buf[5] = OPAD;
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buf[6] = OPAD;
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buf[7] = OPAD;
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// copy first hash after okeypad
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memcpy (buf + 8, hash, 16);
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// fill next 16 bytes with zeros (first hash size assumed 32 bytes in I2P)
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memset (buf + 10, 0, 16);
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// calculate digest
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MD5((uint8_t *)buf, 96, digest);
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}
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// AES
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#ifdef AESNI
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#define KeyExpansion256(round0,round1) \
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"pshufd $0xff, %%xmm2, %%xmm2 \n" \
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"movaps %%xmm1, %%xmm4 \n" \
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"pslldq $4, %%xmm4 \n" \
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"pxor %%xmm4, %%xmm1 \n" \
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"pslldq $4, %%xmm4 \n" \
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"pxor %%xmm4, %%xmm1 \n" \
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"pslldq $4, %%xmm4 \n" \
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"pxor %%xmm4, %%xmm1 \n" \
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"pxor %%xmm2, %%xmm1 \n" \
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"movaps %%xmm1, "#round0"(%[sched]) \n" \
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"aeskeygenassist $0, %%xmm1, %%xmm4 \n" \
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"pshufd $0xaa, %%xmm4, %%xmm2 \n" \
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"movaps %%xmm3, %%xmm4 \n" \
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"pslldq $4, %%xmm4 \n" \
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"pxor %%xmm4, %%xmm3 \n" \
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"pslldq $4, %%xmm4 \n" \
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"pxor %%xmm4, %%xmm3 \n" \
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"pslldq $4, %%xmm4 \n" \
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"pxor %%xmm4, %%xmm3 \n" \
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"pxor %%xmm2, %%xmm3 \n" \
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"movaps %%xmm3, "#round1"(%[sched]) \n"
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void ECBCryptoAESNI::ExpandKey (const AESKey& key)
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{
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__asm__
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(
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"movups (%[key]), %%xmm1 \n"
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"movups 16(%[key]), %%xmm3 \n"
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"movaps %%xmm1, (%[sched]) \n"
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"movaps %%xmm3, 16(%[sched]) \n"
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"aeskeygenassist $1, %%xmm3, %%xmm2 \n"
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KeyExpansion256(32,48)
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"aeskeygenassist $2, %%xmm3, %%xmm2 \n"
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KeyExpansion256(64,80)
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"aeskeygenassist $4, %%xmm3, %%xmm2 \n"
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KeyExpansion256(96,112)
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"aeskeygenassist $8, %%xmm3, %%xmm2 \n"
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KeyExpansion256(128,144)
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"aeskeygenassist $16, %%xmm3, %%xmm2 \n"
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KeyExpansion256(160,176)
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"aeskeygenassist $32, %%xmm3, %%xmm2 \n"
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KeyExpansion256(192,208)
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"aeskeygenassist $64, %%xmm3, %%xmm2 \n"
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// key expansion final
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"pshufd $0xff, %%xmm2, %%xmm2 \n"
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"movaps %%xmm1, %%xmm4 \n"
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"pslldq $4, %%xmm4 \n"
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"pxor %%xmm4, %%xmm1 \n"
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"pslldq $4, %%xmm4 \n"
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"pxor %%xmm4, %%xmm1 \n"
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"pslldq $4, %%xmm4 \n"
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"pxor %%xmm4, %%xmm1 \n"
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"pxor %%xmm2, %%xmm1 \n"
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"movups %%xmm1, 224(%[sched]) \n"
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: // output
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: [key]"r"((const uint8_t *)key), [sched]"r"(GetKeySchedule ()) // input
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: "%xmm1", "%xmm2", "%xmm3", "%xmm4", "memory" // clogged
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);
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}
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#define EncryptAES256(sched) \
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"pxor (%["#sched"]), %%xmm0 \n" \
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"aesenc 16(%["#sched"]), %%xmm0 \n" \
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"aesenc 32(%["#sched"]), %%xmm0 \n" \
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"aesenc 48(%["#sched"]), %%xmm0 \n" \
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"aesenc 64(%["#sched"]), %%xmm0 \n" \
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"aesenc 80(%["#sched"]), %%xmm0 \n" \
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"aesenc 96(%["#sched"]), %%xmm0 \n" \
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"aesenc 112(%["#sched"]), %%xmm0 \n" \
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"aesenc 128(%["#sched"]), %%xmm0 \n" \
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"aesenc 144(%["#sched"]), %%xmm0 \n" \
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"aesenc 160(%["#sched"]), %%xmm0 \n" \
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"aesenc 176(%["#sched"]), %%xmm0 \n" \
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"aesenc 192(%["#sched"]), %%xmm0 \n" \
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"aesenc 208(%["#sched"]), %%xmm0 \n" \
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"aesenclast 224(%["#sched"]), %%xmm0 \n"
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void ECBEncryptionAESNI::Encrypt (const ChipherBlock * in, ChipherBlock * out)
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{
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__asm__
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(
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"movups (%[in]), %%xmm0 \n"
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EncryptAES256(sched)
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"movups %%xmm0, (%[out]) \n"
|
|
: : [sched]"r"(GetKeySchedule ()), [in]"r"(in), [out]"r"(out) : "%xmm0", "memory"
|
|
);
|
|
}
|
|
|
|
#define DecryptAES256(sched) \
|
|
"pxor 224(%["#sched"]), %%xmm0 \n" \
|
|
"aesdec 208(%["#sched"]), %%xmm0 \n" \
|
|
"aesdec 192(%["#sched"]), %%xmm0 \n" \
|
|
"aesdec 176(%["#sched"]), %%xmm0 \n" \
|
|
"aesdec 160(%["#sched"]), %%xmm0 \n" \
|
|
"aesdec 144(%["#sched"]), %%xmm0 \n" \
|
|
"aesdec 128(%["#sched"]), %%xmm0 \n" \
|
|
"aesdec 112(%["#sched"]), %%xmm0 \n" \
|
|
"aesdec 96(%["#sched"]), %%xmm0 \n" \
|
|
"aesdec 80(%["#sched"]), %%xmm0 \n" \
|
|
"aesdec 64(%["#sched"]), %%xmm0 \n" \
|
|
"aesdec 48(%["#sched"]), %%xmm0 \n" \
|
|
"aesdec 32(%["#sched"]), %%xmm0 \n" \
|
|
"aesdec 16(%["#sched"]), %%xmm0 \n" \
|
|
"aesdeclast (%["#sched"]), %%xmm0 \n"
|
|
|
|
void ECBDecryptionAESNI::Decrypt (const ChipherBlock * in, ChipherBlock * out)
|
|
{
|
|
__asm__
|
|
(
|
|
"movups (%[in]), %%xmm0 \n"
|
|
DecryptAES256(sched)
|
|
"movups %%xmm0, (%[out]) \n"
|
|
: : [sched]"r"(GetKeySchedule ()), [in]"r"(in), [out]"r"(out) : "%xmm0", "memory"
|
|
);
|
|
}
|
|
|
|
#define CallAESIMC(offset) \
|
|
"movaps "#offset"(%[shed]), %%xmm0 \n" \
|
|
"aesimc %%xmm0, %%xmm0 \n" \
|
|
"movaps %%xmm0, "#offset"(%[shed]) \n"
|
|
|
|
void ECBDecryptionAESNI::SetKey (const AESKey& key)
|
|
{
|
|
ExpandKey (key); // expand encryption key first
|
|
// then invert it using aesimc
|
|
__asm__
|
|
(
|
|
CallAESIMC(16)
|
|
CallAESIMC(32)
|
|
CallAESIMC(48)
|
|
CallAESIMC(64)
|
|
CallAESIMC(80)
|
|
CallAESIMC(96)
|
|
CallAESIMC(112)
|
|
CallAESIMC(128)
|
|
CallAESIMC(144)
|
|
CallAESIMC(160)
|
|
CallAESIMC(176)
|
|
CallAESIMC(192)
|
|
CallAESIMC(208)
|
|
: : [shed]"r"(GetKeySchedule ()) : "%xmm0", "memory"
|
|
);
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
void CBCEncryption::Encrypt (int numBlocks, const ChipherBlock * in, ChipherBlock * out)
|
|
{
|
|
#ifdef AESNI
|
|
__asm__
|
|
(
|
|
"movups (%[iv]), %%xmm1 \n"
|
|
"1: \n"
|
|
"movups (%[in]), %%xmm0 \n"
|
|
"pxor %%xmm1, %%xmm0 \n"
|
|
EncryptAES256(sched)
|
|
"movaps %%xmm0, %%xmm1 \n"
|
|
"movups %%xmm0, (%[out]) \n"
|
|
"add $16, %[in] \n"
|
|
"add $16, %[out] \n"
|
|
"dec %[num] \n"
|
|
"jnz 1b \n"
|
|
"movups %%xmm1, (%[iv]) \n"
|
|
:
|
|
: [iv]"r"(&m_LastBlock), [sched]"r"(m_ECBEncryption.GetKeySchedule ()),
|
|
[in]"r"(in), [out]"r"(out), [num]"r"(numBlocks)
|
|
: "%xmm0", "%xmm1", "cc", "memory"
|
|
);
|
|
#else
|
|
for (int i = 0; i < numBlocks; i++)
|
|
{
|
|
m_LastBlock ^= in[i];
|
|
m_ECBEncryption.Encrypt (&m_LastBlock, &m_LastBlock);
|
|
out[i] = m_LastBlock;
|
|
}
|
|
#endif
|
|
}
|
|
|
|
void CBCEncryption::Encrypt (const uint8_t * in, std::size_t len, uint8_t * out)
|
|
{
|
|
// len/16
|
|
int numBlocks = len >> 4;
|
|
if (numBlocks > 0)
|
|
Encrypt (numBlocks, (const ChipherBlock *)in, (ChipherBlock *)out);
|
|
}
|
|
|
|
void CBCEncryption::Encrypt (const uint8_t * in, uint8_t * out)
|
|
{
|
|
#ifdef AESNI
|
|
__asm__
|
|
(
|
|
"movups (%[iv]), %%xmm1 \n"
|
|
"movups (%[in]), %%xmm0 \n"
|
|
"pxor %%xmm1, %%xmm0 \n"
|
|
EncryptAES256(sched)
|
|
"movups %%xmm0, (%[out]) \n"
|
|
"movups %%xmm0, (%[iv]) \n"
|
|
:
|
|
: [iv]"r"(&m_LastBlock), [sched]"r"(m_ECBEncryption.GetKeySchedule ()),
|
|
[in]"r"(in), [out]"r"(out)
|
|
: "%xmm0", "%xmm1", "memory"
|
|
);
|
|
#else
|
|
Encrypt (1, (const ChipherBlock *)in, (ChipherBlock *)out);
|
|
#endif
|
|
}
|
|
|
|
void CBCDecryption::Decrypt (int numBlocks, const ChipherBlock * in, ChipherBlock * out)
|
|
{
|
|
#ifdef AESNI
|
|
__asm__
|
|
(
|
|
"movups (%[iv]), %%xmm1 \n"
|
|
"1: \n"
|
|
"movups (%[in]), %%xmm0 \n"
|
|
"movaps %%xmm0, %%xmm2 \n"
|
|
DecryptAES256(sched)
|
|
"pxor %%xmm1, %%xmm0 \n"
|
|
"movups %%xmm0, (%[out]) \n"
|
|
"movaps %%xmm2, %%xmm1 \n"
|
|
"add $16, %[in] \n"
|
|
"add $16, %[out] \n"
|
|
"dec %[num] \n"
|
|
"jnz 1b \n"
|
|
"movups %%xmm1, (%[iv]) \n"
|
|
:
|
|
: [iv]"r"(&m_IV), [sched]"r"(m_ECBDecryption.GetKeySchedule ()),
|
|
[in]"r"(in), [out]"r"(out), [num]"r"(numBlocks)
|
|
: "%xmm0", "%xmm1", "%xmm2", "cc", "memory"
|
|
);
|
|
#else
|
|
for (int i = 0; i < numBlocks; i++)
|
|
{
|
|
ChipherBlock tmp = in[i];
|
|
m_ECBDecryption.Decrypt (in + i, out + i);
|
|
out[i] ^= m_IV;
|
|
m_IV = tmp;
|
|
}
|
|
#endif
|
|
}
|
|
|
|
void CBCDecryption::Decrypt (const uint8_t * in, std::size_t len, uint8_t * out)
|
|
{
|
|
int numBlocks = len >> 4;
|
|
if (numBlocks > 0)
|
|
Decrypt (numBlocks, (const ChipherBlock *)in, (ChipherBlock *)out);
|
|
}
|
|
|
|
void CBCDecryption::Decrypt (const uint8_t * in, uint8_t * out)
|
|
{
|
|
#ifdef AESNI
|
|
__asm__
|
|
(
|
|
"movups (%[iv]), %%xmm1 \n"
|
|
"movups (%[in]), %%xmm0 \n"
|
|
"movups %%xmm0, (%[iv]) \n"
|
|
DecryptAES256(sched)
|
|
"pxor %%xmm1, %%xmm0 \n"
|
|
"movups %%xmm0, (%[out]) \n"
|
|
:
|
|
: [iv]"r"(&m_IV), [sched]"r"(m_ECBDecryption.GetKeySchedule ()),
|
|
[in]"r"(in), [out]"r"(out)
|
|
: "%xmm0", "%xmm1", "memory"
|
|
);
|
|
#else
|
|
Decrypt (1, (const ChipherBlock *)in, (ChipherBlock *)out);
|
|
#endif
|
|
}
|
|
|
|
void TunnelEncryption::Encrypt (const uint8_t * in, uint8_t * out)
|
|
{
|
|
#ifdef AESNI
|
|
__asm__
|
|
(
|
|
// encrypt IV
|
|
"movups (%[in]), %%xmm0 \n"
|
|
EncryptAES256(sched_iv)
|
|
"movaps %%xmm0, %%xmm1 \n"
|
|
// double IV encryption
|
|
EncryptAES256(sched_iv)
|
|
"movups %%xmm0, (%[out]) \n"
|
|
// encrypt data, IV is xmm1
|
|
"1: \n"
|
|
"add $16, %[in] \n"
|
|
"add $16, %[out] \n"
|
|
"movups (%[in]), %%xmm0 \n"
|
|
"pxor %%xmm1, %%xmm0 \n"
|
|
EncryptAES256(sched_l)
|
|
"movaps %%xmm0, %%xmm1 \n"
|
|
"movups %%xmm0, (%[out]) \n"
|
|
"dec %[num] \n"
|
|
"jnz 1b \n"
|
|
:
|
|
: [sched_iv]"r"(m_IVEncryption.GetKeySchedule ()), [sched_l]"r"(m_LayerEncryption.GetKeySchedule ()),
|
|
[in]"r"(in), [out]"r"(out), [num]"r"(63) // 63 blocks = 1008 bytes
|
|
: "%xmm0", "%xmm1", "cc", "memory"
|
|
);
|
|
#else
|
|
m_IVEncryption.Encrypt ((const ChipherBlock *)in, (ChipherBlock *)out); // iv
|
|
m_LayerEncryption.SetIV (out);
|
|
m_LayerEncryption.Encrypt (in + 16, /*i2p::tunnel::TUNNEL_DATA_ENCRYPTED_SIZE*/1008, out + 16); // data
|
|
m_IVEncryption.Encrypt ((ChipherBlock *)out, (ChipherBlock *)out); // double iv
|
|
#endif
|
|
}
|
|
|
|
void TunnelDecryption::Decrypt (const uint8_t * in, uint8_t * out)
|
|
{
|
|
#ifdef AESNI
|
|
__asm__
|
|
(
|
|
// decrypt IV
|
|
"movups (%[in]), %%xmm0 \n"
|
|
DecryptAES256(sched_iv)
|
|
"movaps %%xmm0, %%xmm1 \n"
|
|
// double IV encryption
|
|
DecryptAES256(sched_iv)
|
|
"movups %%xmm0, (%[out]) \n"
|
|
// decrypt data, IV is xmm1
|
|
"1: \n"
|
|
"add $16, %[in] \n"
|
|
"add $16, %[out] \n"
|
|
"movups (%[in]), %%xmm0 \n"
|
|
"movaps %%xmm0, %%xmm2 \n"
|
|
DecryptAES256(sched_l)
|
|
"pxor %%xmm1, %%xmm0 \n"
|
|
"movups %%xmm0, (%[out]) \n"
|
|
"movaps %%xmm2, %%xmm1 \n"
|
|
"dec %[num] \n"
|
|
"jnz 1b \n"
|
|
:
|
|
: [sched_iv]"r"(m_IVDecryption.GetKeySchedule ()), [sched_l]"r"(m_LayerDecryption.GetKeySchedule ()),
|
|
[in]"r"(in), [out]"r"(out), [num]"r"(63) // 63 blocks = 1008 bytes
|
|
: "%xmm0", "%xmm1", "%xmm2", "cc", "memory"
|
|
);
|
|
#else
|
|
m_IVDecryption.Decrypt ((const ChipherBlock *)in, (ChipherBlock *)out); // iv
|
|
m_LayerDecryption.SetIV (out);
|
|
m_LayerDecryption.Decrypt (in + 16, /*i2p::tunnel::TUNNEL_DATA_ENCRYPTED_SIZE*/1008, out + 16); // data
|
|
m_IVDecryption.Decrypt ((ChipherBlock *)out, (ChipherBlock *)out); // double iv
|
|
#endif
|
|
}
|
|
}
|
|
}
|
|
|