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How secure is your data? Can someone sit on your chair while you are at a coworkers office and play with your data?<p>Maybe you need a computer locking tool that is small and easy to use yet powerful enough to make sure your machine is locked when you need to go out for a break.<h3>Computer Locker</h3>When run the "Computer Locker" will ask you for a password that is then hashed for your safety. The locker will prevent a user from executing the Task Manager. Locker will also provide a way for a user to log off, restart or shut down the machine.<p>From a programmer point of interest the source code includes an Md5 hashing algoritham by using API calls from the ADVAPI32.DLL. <blockquote class="yes"><b>const</b><br /> ADVAPI32 = 'advapi32.dll';<br /> <b>function</b> CryptAcquireContext(phProv: PULONG; pszContainer: PAnsiChar; pszProvider: PAnsiChar; dwProvType: DWORD; dwFlags: DWORD): BOOL; stdcall; external ADVAPI32 name 'CryptAcquireContextA';<br /> <b>function</b> CryptCreateHash(hProv: ULONG; Algid: ULONG; hKey: ULONG; dwFlags: DWORD; phHash: PULONG): BOOL; stdcall; <b>external</b> ADVAPI32 <b>name</b> 'CryptCreateHash';<br /> <b>function</b> CryptHashData(hHash: ULONG; const pbData: PBYTE; dwDataLen: DWORD; dwFlags: DWORD): BOOL; stdcall; <b>external</b> ADVAPI32 <b>name</b> 'CryptHashData';<br /> <b>function</b> CryptGetHashParam(hHash: ULONG; dwParam: DWORD; pbData: PBYTE; pdwDataLen: PDWORD; dwFlags: DWORD): BOOL; stdcall; <b>external</b> ADVAPI32 <b>name</b> 'CryptGetHashParam';<br /> <b>function</b> CryptDestroyHash(hHash: ULONG): BOOL; stdcall; <b>external</b> ADVAPI32 <b>name</b> 'CryptDestroyHash';<br /> <b>function</b> CryptReleaseContext(hProv: ULONG; dwFlags: DWORD): BOOL; stdcall; <b>external</b> ADVAPI32 name 'CryptReleaseContext';<br /><br /><b>function</b> MD5(<b>const</b> Input: <b>String</b>): <b>String</b>;<br />const<br /> HP_HASHVAL = $0002;<br /> PROV_RSA_FULL = 1;<br /> CRYPT_VERIFYCONTEXT = $F0000000;<br /> CRYPT_MACHINE_KEYSET = $00000020;<br />?? 快捷鍵說明
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