Update private master program code

common/md5.h

@@ -0,0 +1,42 @@
+#pragma once
+
+#include <wincrypt.h>
+
+inline std::string CalcMD5FromBytes(const BYTE* data, DWORD length) {
+	HCRYPTPROV hProv = 0;
+	HCRYPTHASH hHash = 0;
+	BYTE hash[16]; // MD5 <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 16 <20>ֽ<EFBFBD>
+	DWORD hashLen = sizeof(hash);
+	std::ostringstream oss;
+
+	if (!CryptAcquireContext(&hProv, NULL, NULL, PROV_RSA_FULL, CRYPT_VERIFYCONTEXT)) {
+		return "";
+	}
+
+	if (!CryptCreateHash(hProv, CALG_MD5, 0, 0, &hHash)) {
+		CryptReleaseContext(hProv, 0);
+		return "";
+	}
+
+	if (!CryptHashData(hHash, data, length, 0)) {
+		CryptDestroyHash(hHash);
+		CryptReleaseContext(hProv, 0);
+		return "";
+	}
+
+	if (!CryptGetHashParam(hHash, HP_HASHVAL, hash, &hashLen, 0)) {
+		CryptDestroyHash(hHash);
+		CryptReleaseContext(hProv, 0);
+		return "";
+	}
+
+	// ת<><D7AA>Ϊʮ<CEAA><CAAE><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ַ<EFBFBD><D6B7><EFBFBD>
+	for (DWORD i = 0; i < hashLen; ++i) {
+		oss << std::hex << std::setw(2) << std::setfill('0') << (int)hash[i];
+	}
+
+	CryptDestroyHash(hHash);
+	CryptReleaseContext(hProv, 0);
+
+	return oss.str();
+}