Use winapi for hash Encryption

# Include <iostream> <br/> # include <vector> <br/> using namespace STD; <br/> # include <windows. h> <br/> # include <wincrypt. h> <br/> # include <stdlib. h> <br/> # include <share. h> <br/> # include <tchar. h> <br/> # include <Io. h> <br/> # define bolcksize 184320 <br/> DWORD computehash (const byte * pbdata, DWORD dwdatalen, alg_id algid, <br/> byte * & pbouthash, DWORD & dwhashlen, bool showdbinfo = false); <br/> int main () <BR/>{< br/> vector <byte *> hashvec; <br/> file * file = _ tfsopen (_ T ("protocol_4f_54.txt "), _ T ("rb"), _ sh_denyno); <br/> If (! File) <br/>{< br/> printf ("Open File fail! /N "); <br/> return-1; <br/>}< br/> int filesize = _ filelengthi64 (file-> _ file ); <br/> printf ("file size: % d/N", filesize); <br/> // set the buffer size <br/> // setvbuf (file, null, _ iofbf, 1024*8*2); </P> <p> byte * pbouthash; <br/> DWORD dwhashlen; <br/> // char pbdata [9728000] = "wangxijie/0"; <br/> char * pbdata = new char [bolcksize]; <br/> int dwdatalen = strlen (pbdata); <br/> int Togo = 0; <br/> size_t reallen; <br/> while (Togo <filesize) <B R/>{< br/> reallen = fread (pbdata, 1, bolcksize, file); <br/> computehash (byte *) & pbdata [0], reallen, calg_md5, pbouthash, dwhashlen); <br/> hashvec. push_back (pbouthash); <br/> for (INT I = 0; I <dwhashlen; I ++) <br/> printf ("% 02x ", pbouthash [I]); <br/> printf ("/n % d/N", reallen); <br/> Togo ++ = reallen; <br/>}</P> <p> byte * reshash = new byte [hashvec. size () * 16]; <br/> for (INT I = 0; I <pashvec. size (); I ++) <br/>{< br/> memcpy (reshas H + I * 16, hashvec [I], 16); <br/> Delete [] hashvec [I]; <br/> // For (Int J = 0; j <16; j ++) <br/> // printf ("% 02x", (reshash + I * 16) [J]); <br/> // printf ("/N"); <br/>}< br/> computehash (byte *) & reshash [0], hashvec. size () * 16, calg_md5, pbouthash, dwhashlen); <br/> for (I = 0; I <dwhashlen; I ++) <br/> printf ("% x", pbouthash [I]); <br/> printf ("/N"); <br/> Delete [] pbdata; <br/> fclose (File); <br/> Delete pbouthash; <br/> return 0; <br />}< Br/> DWORD computehash (const byte * pbdata, DWORD dwdatalen, alg_id algid, <br/> byte * & pbouthash, DWORD & dwhashlen, bool showdbinfo) <br/>{< br/> char username [10] = "wangxijie"; <br/> hcrypthash hhash = {0}; <br/> hcryptprov; <br/> If (cryptacquirecontext (<br/> & hcryptprov, // return CSP handle <br/> username, // password container name <br/> null, // use the default CSP name (Microsoft RSA base provider) when null <br/> prov_rsa_full, // CSP type <br/> 0) // Flag values <br/>{< br/> // The key container named username exists, then we have obtained the CSP handle <br/> If (showdbinfo) <br/>{< br/> printf ("a crypto context with the % s key container/N", username); <br/> printf ("has been acquired. /n "); <br/>}< br/> else // if the key container does not exist, we need to create this key container <br/>{< br/> If (cryptacquirecontext (<br/> & hcryptprov, <br/> username, <br/> null, <br/> prov_rsa_full, <br/> crypt_newkeyset) // create a key container named username <br/ >{< Br/> // The key container is successfully created and the CSP handle is obtained. <br/> If (showdbinfo) <br/> printf ("a new key container has been created. % s/n ", username); <br/>}< br/> else <br/>{< br/> If (showdbinfo) <br/> printf ("cocould not create a new key container. /n "); <br/>}< br/>}// end of else </P> <p> If (cryptcreatehash (<br/> hcryptprov, <br/> algid, <br/> 0, <br/> 0, <br/> & hhash) <br/>{< br/> If (showdbinfo) <br/> printf ("A hash object has been created ./N "); <br/>}< br/> else <br/>{< br/> If (showdbinfo) <br/> printf (" error during cryptcreatehash! /N "); <br/>}</P> <p> DWORD dwreturn; <br/> // char pbdata [100] =" wangxijie/0 "; <br/> // int dwdatalen = strlen (pbdata); <br/> If (! Crypthashdata (hhash, (byte *) & pbdata [0], dwdatalen, 0) <br/>{< br/> dwreturn = getlasterror (); <br/> cryptdestroyhash (hhash); <br/> cryptreleasecontext (hcryptprov, 0); <br/> return dwreturn; <br/>}</P> <p> // DWORD dwhashlen; <br/> DWORD dwlen = sizeof (dwhashlen); <br/> cryptgethashparam (hhash, hp_hashsize, (byte *) (& dwhashlen), & dwlen, 0); </P> <p> // byte * pbouthash; <br/> pbouthash = new byte [dwhashlen]; <br/> dwlen = dwhashlen; <br/> cryptgethashparam (hhash, hp_hashval, pbouthash, & dwlen, 0 ); </P> <p> // For (INT I = 0; I <dwhashlen; I ++) <br/> // printf ("% x ", pbouthash [I]); <br/> // printf ("/N"); </P> <p> // destory <br/> cryptdestroyhash (hhash ); <br/> If (hcryptprov) <br/> cryptreleasecontext (hcryptprov, 0); <br/> return 0; <br/>}