clean up crypto packages

source/common/crypto/crc.cpp

@@ -1,8 +1,6 @@
 // Copyright (C) 2007-2025 EQ2EMulator
 // Licensed under GPL v3
 
-#include <stdio.h>
-
 unsigned long IntArray[] = {
 	0x00000000, 0x77073096, 0xEE0E612C, 0x990951BA,
 	0x076DC419, 0x706AF48F, 0xE963A535, 0x9E6495A3,

source/common/crypto/crypto.cpp

@@ -2,12 +2,11 @@
 // Licensed under GPL v3
 
 #include "crypto.h"
-#include <algorithm>
 #include <array>
 #include <cstring>
 #include <mutex>
 
-int64 Crypto::RSADecrypt(uchar* text, int16 size) noexcept
+int64 Crypto::RSADecrypt(uchar* text, [[maybe_unused]] int16 size) noexcept
 {
 	int64 ret = 0;
 	std::array<uchar, 8> buffer{};
@@ -50,4 +49,3 @@ void Crypto::setRC4Key(int64 key) noexcept
 		server.reset();
 	}
 }
-

source/common/crypto/rc4.cpp

@@ -2,14 +2,14 @@
 // Licensed under GPL v3
 
 #include "rc4.h"
-#include <algorithm>
-#include <cstring>
-#include <numeric>
+#include <cstddef>
 
 static constexpr std::array<uchar, 256> get_init_state() noexcept
 {
 	std::array<uchar, 256> state{};
-	std::iota(state.begin(), state.end(), 0);
+	for (std::size_t i = 0; i < 256; ++i) {
+		state[i] = static_cast<uchar>(i);
+	}
 	return state;
 }
 

source/common/crypto/rc4.h

@@ -1,5 +1,6 @@
 // Copyright (C) 2007-2025 EQ2EMulator
 // Licensed under GPL v3
+
 #pragma once
 
 #include "../types.h"
@@ -19,4 +20,3 @@ private:
 	uchar m_x{};
 	uchar m_y{};
 };
-

source/common/crypto/sha512.cpp

@@ -2,7 +2,6 @@
 // Licensed under GPL v3
 
 #include "sha512.h"
-#include <algorithm>
 #include <cstdio>
 #include <cstring>
 
@@ -158,7 +157,7 @@ std::string sha512(std::string_view input) noexcept
 	ctx.final(digest.data());
 
 	std::array<char, 2 * SHA512::DIGEST_SIZE + 1> buf{};
-	for (int i = 0; i < SHA512::DIGEST_SIZE; ++i) {
+	for (unsigned int i = 0; i < SHA512::DIGEST_SIZE; ++i) {
 		std::sprintf(buf.data() + i * 2, "%02x", digest[i]);
 	}
 	return std::string{buf.data()};

source/common/crypto/sha512.h

@@ -1,3 +1,6 @@
+// Copyright (C) 2007-2025 EQ2EMulator
+// Licensed under GPL v3
+
 #pragma once
 
 #include <array>
@@ -70,5 +73,3 @@ protected:
            | ((uint64) *((str) + 1) << 48)    \
            | ((uint64) *((str) + 0) << 56);   \
 }
- 
-#endif