我正在写一个恢复应用程序,从Chrome中提取密码。它有一个GUI,所以我使用了SQLite包装器,它使用SQLConnection和SQLQuery。这里是我的代码片段:为什么RAD Studio CreateBlobStream与CryptUnprotectData返回额外的字符?
//Create our blob stream
TStream *Stream2 = SQLQuery1->CreateBlobStream(SQLQuery1->FieldByName("password_value"), bmRead);
//Get our blob size
int size = Stream2->Size;
//Create our buffer
char* pbDataInput = new char[size+1];
//Adding null terminator to buffer
memset(pbDataInput, 0x00, sizeof(char)*(size+1));
//Write to our buffer
Stream2->ReadBuffer(pbDataInput, size);
DWORD cbDataInput = size;
DataOut.pbData = pbDataInput;
DataOut.cbData = cbDataInput;
LPWSTR pDescrOut = NULL;
//Decrypt password
CryptUnprotectData(&DataOut,
&pDescrOut,
NULL,
NULL,
NULL,
0,
&DataVerify);
//Output password
UnicodeString password = (UnicodeString)(char*)DataVerify.pbData;
passwordgrid->Cells[2][i] = password;
输出数据看起来很好,除非它的行为就像我的null终止符出现问题一样。下面是输出看起来像每一行:
我读过
的Windows文档为CryptUnprotectData
:
https://msdn.microsoft.com/en-us/library/windows/desktop/aa382377.aspx
Embarcadero的文档CreateBlobStream
:
http://docwiki.embarcadero.com/Libraries/en/Data.DB.TDataSet.CreateBlobStream
的memset:
http://www.cplusplus.com/reference/cstring/memset/
谢谢,我知道它与空终止符有关。提高你的答案。 –