程序掛起在函數調用Wincrypt函數

Question

你能幫我這個代碼嗎？調用函數​​時會掛起。

#include <iostream> 
#include <Windows.h> 
#include <wincrypt.h> 


struct AesKey { 
    BLOBHEADER Header; 
    DWORD dwKeyLength; 
    BYTE cbKey[16]; 

     AesKey() { 
      ZeroMemory(this, sizeof(*this)); 
      Header.bType = PLAINTEXTKEYBLOB; 
      Header.bVersion = CUR_BLOB_VERSION; 
      Header.reserved = 0; 
      Header.aiKeyAlg = CALG_AES_128; 
      dwKeyLength = 16; 
     } 
}; 

void AesDecrypt(unsigned char *output, unsigned char *input, int inLen, unsigned char *key, unsigned char *iv, int &plainSize) { 
    HCRYPTPROV provider; 
    AesKey rawKey; 
    HCRYPTKEY cKey; 

    BOOL hr = CryptAcquireContext(&provider, NULL, MS_ENH_RSA_AES_PROV, PROV_RSA_AES, 0); 
    if (hr == FALSE) 
     throw "Unable to acquire AES Context"; 

    for (int i = 0; i < 16; i++) 
     rawKey.cbKey[i] = key[i]; 

    hr = CryptImportKey(provider, (BYTE *) &rawKey, sizeof(AesKey), NULL, 0, &cKey); 
    if (hr == FALSE) 
     throw "Unable to import given key"; 

    hr = CryptSetKeyParam(cKey, KP_IV, (BYTE *) iv, 0); 
    if (hr == FALSE) 
     throw "Unable to set IV"; 

    DWORD dwMode = CRYPT_MODE_CBC; 
    hr = CryptSetKeyParam(cKey, KP_MODE, (BYTE*) &dwMode, 0); 
    if (hr == FALSE) 
     throw "Unable to set mode"; 

    memcpy(output, input, inLen); 

    DWORD d = (DWORD) inLen; 
    hr = CryptDecrypt(cKey, NULL, TRUE, 0, output, &d); 
    if (hr == FALSE) 
    { 
     int err = GetLastError(); 
     throw "Error during Decryption"; 
    } 

    plainSize = d; 
} 

// codigo generado por mi 

int main(int argc, char** argv) { 
     unsigned char input[] = "SE83loTjmMeaG9+xoIyjng=="; 
     unsigned char *pinput = input; 

     unsigned char output[] = "SE83loTjmMeaG9+xoIyjng=="; 
     unsigned char *poutput = output; 

     unsigned char iv[] = "1234567890ABCDEF"; 
     unsigned char *piv = iv; 

     unsigned char key[] = "1234567890ABCDEF"; 
     unsigned char *pkey = key; 
     int plaInt; 
     AesDecrypt(poutput, pinput, 24, pkey, piv, plaInt); 

     std::cout << output << std::endl; 

     return 0; 
} 

調用函數時，代碼崩潰，我想我通過傳遞指針來做錯事情。

扔「字符常量*」

的實例，此應用程序已請求運行時終止它在 不尋常的方式終止後調用。請聯繫應用程序的支持團隊獲取更多 信息。

--------------------------------用返回值255退出的進程按任意鍵繼續。 。 。

Answer 1

我懷疑這條線是罪魁禍首。

hr = CryptImportKey(provider, (BYTE *) &rawKey, sizeof(AesKey), NULL, 0, &cKey); 

你可能想用的

hr = CryptImportKey(provider, rawKey.cbKey, sizeof(AesKey), NULL, 0, &cKey);