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Author SHA1 Message Date
Dmitry Sovetin
e7e42922b6 Update README.md 2020-02-14 09:13:23 +03:00
Dmitry Sovetin
c0ed7ca721 Update README.md 2020-02-14 09:01:27 +03:00
Dmitry Sovetin
08129fee79 Update README.md 2019-10-31 15:57:15 +03:00
Dmitry Sovetin
fbbbef7da6 Update README.md 2019-10-31 15:54:06 +03:00
Dmitry Sovetin
bba8c620bd Corrections 2019-10-24 13:53:28 +03:00
2 changed files with 17 additions and 18 deletions

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@@ -1,12 +1,13 @@
# Simple multithreaded UDP server
# Simple C++ multithreaded UDP server
[![Languages](https://img.shields.io/github/languages/top/SDMMSK/UDPServer.svg?style=flat-square)](README.md)
[![Code Size](https://img.shields.io/github/languages/code-size/SDMMSK/UDPServer.svg?style=flat-square)](README.md)
[![License](https://img.shields.io/github/license/SDMMSK/UDPServer.svg?style=flat-square)](LICENSE)
Simple multithreaded UDP server.
Simple C++ multithreaded UDP server.
The number of threads is determined by the number of CPU cores.
JSON logging.
JSON logging.
XTea encryption functions.
## Getting Started

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@@ -162,7 +162,7 @@ void termHandler(int i) {
// XTea Encryption, use if necessary...
void xteaEncipher(unsigned int num_rounds, uint32_t v[2], uint32_t const key[4]) {
unsigned int i;
unsigned int i;
uint32_t v0 = v[0], v1 = v[1], sum = 0, delta = 0x9E3779B9;
for (i = 0; i < num_rounds; i++) {
v0 += (((v1 << 4) ^ (v1 >> 5)) + v1) ^ (sum + key[sum & 3]);
@@ -185,26 +185,24 @@ void xteaDecipher(unsigned int num_rounds, uint32_t v[2], uint32_t const key[4])
void stringCrypt(char *inout, int len, bool encrypt) // encrypt true - encrypt, false - decript
{
for (int i = 0; i < len / BLOCK_SIZE; i++) {
if (encrypt) {
xteaEncipher(32, (uint32_t*)(inout + (i * BLOCK_SIZE)), key);
} else {
xteaDecipher(32, (uint32_t*)(inout + (i * BLOCK_SIZE)), key);
}
for (int i = 0; i < len / BLOCK_SIZE; i++) {
if (encrypt) {
xteaEncipher(32, (uint32_t*)(inout + (i * BLOCK_SIZE)), key);
} else {
xteaDecipher(32, (uint32_t*)(inout + (i * BLOCK_SIZE)), key);
}
}
if (len % BLOCK_SIZE != 0)
{
int mod = len % BLOCK_SIZE;
if (len % BLOCK_SIZE != 0) {
int mod = len % BLOCK_SIZE;
int offset = (len / BLOCK_SIZE) * BLOCK_SIZE;
char data[BLOCK_SIZE];
memcpy(data, inout + offset, mod);
if (encrypt) {
xteaEncipher(32, (uint32_t*)data, key);
} else {
xteaEncipher(32, (uint32_t*)data, key);
} else {
xteaDecipher(32, (uint32_t*)data, key);
}
memcpy(inout + offset, data, mod);
cout << mod << endl;
}
memcpy(inout + offset, data, mod);
}
}