#include <windows.h>

void Gen(char *szName,char *szCode)
{
	typedef struct _SHA_CTX
	{
		DWORD Unknown[6];
		DWORD State[5];
		DWORD Count[2];
		BYTE Buffer[64];
	} SHA_CTX, *PSHA_CTX;
	typedef void (WINAPI* PSHAInit)(SHA_CTX *ctx);
	typedef void (WINAPI* PSHAUpdate)(SHA_CTX *ctx,BYTE *buf,DWORD len);
	typedef void (WINAPI* PSHAFinal)(SHA_CTX *ctx,BYTE *res);

	char szTmp[0x200];
	SHA_CTX context;
	BYTE digest[0x20];
    
	wsprintf(szTmp,"%sf***Tencent",szName);
	GetVolumeInformation("C:\\",NULL,NULL,(DWORD *)&szTmp[strlen(szName)],NULL,NULL,NULL,NULL);

	HINSTANCE hDLL = LoadLibrary("advapi32.dll");
	PSHAInit SHAInit = (PSHAInit)GetProcAddress(hDLL,"A_SHAInit");
	PSHAUpdate SHAUpdate = (PSHAUpdate)GetProcAddress(hDLL,"A_SHAUpdate");
	PSHAFinal SHAFinal = (PSHAFinal)GetProcAddress(hDLL,"A_SHAFinal");

	SHAInit(&context);
	context.State[0] = 0xB1CAB1CA;
	context.State[1] = 0xCCBFCCBF;
	context.State[2] = 0xBFB2D6BE;
	context.State[3] = 0xF8C7D8B5;
	context.State[4] = 0xEEC7BCCD;
	SHAUpdate(&context,(BYTE *)szTmp,strlen(szName)+11);
	SHAFinal(&context,digest);

	UINT64 t;
	int i,j;
	char *ta = "ABCDEFGHJKMNPQRSTVWXYZ1234567890";
	for (i=0;i<4;i++)
	{
		t = 0;
		for (j=0;j<5;j++)
		{
			t <<= 8;
			t += digest[i*5+j];
		}
		for (j=0;j<8;j++)
		{
			szCode[i*9+j] = ta[(*((DWORD *)&t+1)>>3)&0x1F];
			t <<= 5;
		}
		szCode[i*9+8] = '-';
	}
	szCode[0x23] = 0;
}

[招生]科锐逆向工程师培训(2024年11月15日实地，远程教学同时开班, 第51期)