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video game eventually

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This commit is contained in:
malloc 2018-03-20 23:29:24 -05:00
parent 75495fc976
commit 11f993100a
6 changed files with 87 additions and 31 deletions
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1
server/CMakeLists.txt
View file

@ -21,3 +21,4 @@ else()
endif()
install(TARGETS server RUNTIME DESTINATION bin)

4
server/src/crypto/base64.cpp
View file

@ -4,7 +4,7 @@
#define B64_PADDING 0xFF
std::string sosc::cgc::base64_encode(const std::string& data, bool unix) {
return base64_encode(data.c_str(), data.length());
return base64_encode(data.c_str(), data.length(), unix);
}
std::string sosc::cgc::base64_encode
@ -18,7 +18,7 @@ std::string sosc::cgc::base64_encode
std::string encoded;
for(size_t i = 0; i < length; i += 3) {
if(i > 0 && ((i / 3) * 4) % 76 == 0)
if(i > 0 && ((i / 3) * 4) % 76 == 0 && !unix)
encoded += "\r\n";
int index = 0, padding = 0;

32
server/src/crypto/bcrypt.cpp
View file

@ -1,15 +1,41 @@
#include "bcrypt.hpp"
static const uint32_t bcrypt_ciphertext[6] = {
0x4f727068, 0x65616e42, 0x65686f6c,
0x64657253, 0x63727944, 0x6f756274
};
std::string sosc::cgc::bcrypt_hash(const std::string& input) {
std::string salt = csprng::next_bytes(16),
input_t = input.substr(0, 72);
uint32_t ctext[6];
std::memcpy(ctext, bcrypt_ciphertext, 6 * sizeof(uint32_t));
Blowfish bfish;
bfish.SetEksKey(salt, input);
for(int i = 0; i < BCRYPT_COST; ++i) {
bfish.SetKey(input.c_str(), input.length());
bfish.SetKey(salt.c_str(), salt.length());
}
for(int i = 0; i < 64; ++i)
for(int j = 0; j < 6; j += 2)
bfish.EncryptBlock(&ctext[j], &ctext[j + 1]);
std::string ct_hash(24, 0);
for(int i = 0; i < 6; ++i) {
for(int j = 0; j < 4; ++j) {
ct_hash[i * 4 + j] = ctext[i] & 0xFF;
ctext[i] >>= 8;
}
}
std::stringstream stream;
stream << "$2b$" << BCRYPT_COST << "$"
<< base64_encode(salt, true)
<< "b";
stream << "$2b$"
<< (BCRYPT_COST < 10 ? "0" : "") << BCRYPT_COST
<< "$" << base64_encode(salt, true)
<< base64_encode(ct_hash, true);
return stream.str();
}

1
server/src/crypto/bcrypt.hpp
View file

@ -2,6 +2,7 @@
#define SOSC_CRYPTO_BCRYPT_H
#include <sstream>
#include <cstring>
#include <string>
#include "base64.hpp"
#include "bfish.hpp"

73
server/src/crypto/bfish.cpp
View file

@ -190,7 +190,17 @@ static void swap(uint32_t& a, uint32_t& b) {
b = temp;
}
static void pack_bytes
static uint32_t pack_word
(const std::string& data, std::string::size_type i)
{
uint32_t word;
for(int j = 0; j < 4; ++j)
word = (word << 8) | data[(i + j) % data.length()];
return word;
}
static void pack_block
(const std::string& data, std::string::size_type i,
uint32_t& left, uint32_t& right)
{
@ -203,36 +213,33 @@ static void pack_bytes
}
}
static void unpack_bytes
static void unpack_block
(std::string& data, std::string::size_type i,
uint32_t left, uint32_t right)
{
for(int j = 0; j < 8; ++j) {
if(j < 4) {
data[i + (3 - j)] = left & 0xFF;
data[(i + (3 - j)) % data.length()] = left & 0xFF;
left >>= 8;
} else {
data[i + (7 - j + 4)] = right & 0xFF;
data[(i + (7 - j + 4)) % data.length()] = right & 0xFF;
right >>= 8;
}
}
}
sosc::cgc::Blowfish::Blowfish(const std::string& key) {
sosc::cgc::Blowfish::Blowfish() {
std::memcpy(this->parr, init_parr, sizeof(init_parr));
std::memcpy(this->sbox, init_sbox, sizeof(init_sbox));
}
sosc::cgc::Blowfish::Blowfish(const std::string& key) : Blowfish() {
this->SetKey(key.c_str(), key.length());
}
void sosc::cgc::Blowfish::SetKey(const char* key, size_t length) {
for(int i = 0; i < 18; ++i) {
uint32_t data = 0;
for(int j = 0; j < 4; ++j)
data = (data << 8) | key[(i * 4 + j) % length];
this->parr[i] ^= data;
}
for(int i = 0; i < 18; ++i)
this->parr[i] ^= pack_word(key, i * 4);
uint32_t left = 0, right = 0;
for(int i = 0; i < 18; i += 2) {
@ -253,16 +260,32 @@ void sosc::cgc::Blowfish::SetKey(const char* key, size_t length) {
void sosc::cgc::Blowfish::SetEksKey
(const std::string& data, const std::string& key)
{
for(int i = 0; i < 18; ++i) {
uint32_t pack = 0;
for(int j = 0; j < 4; ++j)
pack = (pack << 8) | key[(i * 4 + j) % key.length()];
this->parr[i] ^= pack;
for(int i = 0; i < 18; ++i)
this->parr[i] ^= pack_word(key, i * 4);
uint32_t left, right, ptr = 0;
for(int i = 0; i < 18; i += 2) {
left = pack_word(data, ptr);
right = pack_word(data, ptr + 4);
this->EncryptBlock(&left, &right);
this->parr[i] = left;
this->parr[i + 1] = right;
ptr += 8;
}
for(int i = 0; i < 18; i += 2) {
for(int i = 0; i < 4; ++i) {
for(int j = 0; j < 256; j += 2) {
left = pack_word(data, ptr);
right = pack_word(data, ptr + 4);
this->EncryptBlock(&left, &right);
this->sbox[i][j] = left;
this->sbox[i][j + 1] = right;
ptr += 8;
}
}
}
@ -276,9 +299,9 @@ std::string sosc::cgc::Blowfish::Encrypt(std::string data) const {
for(std::string::size_type i = 0; i < data.size(); i += 8) {
uint32_t left, right;
pack_bytes(data, i, left, right);
pack_block(data, i, left, right);
this->EncryptBlock(&left, &right);
unpack_bytes(data, i, left, right);
unpack_block(data, i, left, right);
}
return data;
@ -291,9 +314,9 @@ std::string sosc::cgc::Blowfish::Decrypt(std::string data) const {
for(std::string::size_type i = 0; i < data.size(); i += 8) {
uint32_t left, right;
pack_bytes(data, i, left, right);
pack_block(data, i, left, right);
this->DecryptBlock(&left, &right);
unpack_bytes(data, i, left, right);
unpack_block(data, i, left, right);
}
int i = 0;

7
server/src/main.cpp
View file

@ -9,6 +9,7 @@
#include "crypto/base64.hpp"
#include "crypto/bfish.hpp"
#include "utils/csprng.hpp"
#include "crypto/bcrypt.hpp"
int main(int argc, char **argv) {
//auto sock = sosc::TcpClient();
@ -34,12 +35,16 @@ int main(int argc, char **argv) {
//std::string a = sosc::cgc::sha1("test", true);
sosc::cgc::Blowfish fish("");
/*sosc::cgc::Blowfish fish("TESTKEY");
std::string test = fish.Encrypt("imagine a test");
std::string testd = fish.Decrypt(test);
uint32_t teest = sosc::csprng::next<uint32_t>();
std::cout << std::hex << teest;*/
std::string hash = sosc::cgc::bcrypt_hash("test pwd");
std::cout << hash;
return 0;
}