C# 用C+进行RSA加密+；和WinCrypt库，并用C进行解密# 我想用C++和WinCrypt（RSA算法）库加密，用C＜< /p>解密 我用C++进行加密解密，但是当我要解密时，加密的C文本异常抛出：“解码OAEP填充时出错”< > /P> C++代码： void main() { Acqired(); Generate2048BitKeys(); ExportPrivateKey(L"privateKey.txt"); ExportPublicKey(L"publicKey.txt"); // Encrypt ImportKey(L"publicKey.txt"); EncryptDataWriteToFile(L"New Text For Encryption...", L"encryptedData.txt"); DestroyKeys(); // Decrypt Acqired(); ImportKey(L"privateKey.txt"); LPBYTE lpDecryptedData = NULL; DWORD dwDataLen = 0; DecryptDataFromFile(&lpDecryptedData, L"encryptedData.txt", &dwDataLen); WriteBytesFile(L"decryptedData.txt", lpDecryptedData, dwDataLen); } void DestroyKeys() { if (hKey != NULL) { CryptDestroyKey(hKey); hKey = NULL; } if (hProvider != NULL) { CryptReleaseContext(hProvider, 0); hProvider = NULL; } } void Acqired() { BOOL res = CryptAcquireContext(&hProvider, NULL, MS_ENHANCED_PROV, PROV_RSA_FULL, CRYPT_VERIFYCONTEXT); if (!res) { std::printf("Error Acquiring Key Context\n"); return; } std::printf("Key Context Acquired\n"); } void Generate2048BitKeys() { const DWORD RSA2048BIT_KEY = 0x8000000; DWORD dwParams; dwParams = RSA2048BIT_KEY | CRYPT_EXPORTABLE | CRYPT_NO_SALT; //set the key length to 2048 bits, allow the keys to be exported, no salt bool res = CryptGenKey(hProvider, AT_KEYEXCHANGE, dwParams, &hKey); if (!res) { printf("SERVER: Unable to generate exchange keys\n"); return; } printf("SERVER: Exchange keys generated\n"); } void ExportPrivateKey(LPTSTR lpFileName) { if (hKey == NULL) { printf("Error in function 'ExportPrivateKey', hKey is NULL\n"); return; } DWORD dwDataLen = 0; bool exportResult = CryptExportKey(hKey, NULL, PRIVATEKEYBLOB, 0, NULL, &dwDataLen); LPBYTE lpKeyBlob = (LPBYTE)malloc(dwDataLen); exportResult = CryptExportKey(hKey, NULL, PRIVATEKEYBLOB, 0, lpKeyBlob, &dwDataLen); WriteBytesFile(lpFileName, lpKeyBlob, dwDataLen); free(lpKeyBlob); } void ExportPublicKey(LPTSTR lpFileName) { if (hKey == NULL) { printf("Error in function 'ExportPublicKey', hKey is NULL\n"); return; } DWORD dwDataLen = 0; bool exportResult = CryptExportKey(hKey, NULL, PUBLICKEYBLOB, 0, NULL, &dwDataLen); LPBYTE lpKeyBlob = (LPBYTE)malloc(dwDataLen); exportResult = CryptExportKey(hKey, NULL, PUBLICKEYBLOB, 0, lpKeyBlob, &dwDataLen); WriteBytesFile(lpFileName, lpKeyBlob, dwDataLen); free(lpKeyBlob); } void ImportKey(LPTSTR lpFileName) { if (hProvider == NULL) { printf("Error in function ImportKey, hProvider is NULL\n"); return; } if (hKey != NULL) CryptDestroyKey(hKey); LPBYTE lpKeyContent = NULL; DWORD dwDataLen = 0; ReadBytesFile(lpFileName, &lpKeyContent, &dwDataLen); bool importResult = CryptImportKey(hProvider, lpKeyContent, dwDataLen, 0, CRYPT_OAEP, &hKey); if (!importResult) { printf("Error in function ImportKey, CryptImportKey is failed\n"); return; } delete[] lpKeyContent; } void EncryptDataWriteToFile(LPTSTR lpSimpleDataToEncrypt, LPTSTR lpFileName) { DWORD SimpleDataToEncryptLength = _tcslen(lpSimpleDataToEncrypt) * sizeof(TCHAR); DWORD BufferLength = SimpleDataToEncryptLength * 10; BYTE *EncryptedBuffer = new BYTE[BufferLength]; SecureZeroMemory(EncryptedBuffer, BufferLength); CopyMemory(EncryptedBuffer, lpSimpleDataToEncrypt, SimpleDataToEncryptLength); bool cryptResult = CryptEncrypt(hKey, NULL, TRUE, CRYPT_OAEP, EncryptedBuffer, &SimpleDataToEncryptLength, BufferLength); if (!cryptResult) { printf("Error in function EncryptDataWriteToFile, CryptEncrypt is failed\n"); return; } WriteBytesFile(lpFileName, EncryptedBuffer, SimpleDataToEncryptLength); delete[] EncryptedBuffer; printf("Encrypt Data Successfully\n"); } void DecryptDataFromFile(LPBYTE *lpDecryptedData, LPTSTR lpFileName, DWORD *dwDecryptedLen) { if (hKey == NULL) { printf("Error in function 'DecryptDataFromFile', hKey is NULL.\n"); return; } LPBYTE lpEncryptedData = NULL; DWORD dwDataLen = 0; ReadBytesFile(lpFileName, &lpEncryptedData, &dwDataLen); bool decryptResult = CryptDecrypt(hKey, NULL, TRUE, CRYPT_OAEP, lpEncryptedData, &dwDataLen); if (!decryptResult) { printf("Error in function 'DecryptDataFromFile', CryptDecrypt cann't be decrypted data.\n"); return; } printf("decrypted Successfully ... \n"); *dwDecryptedLen = dwDataLen; *lpDecryptedData = new BYTE[dwDataLen + 1]; SecureZeroMemory(*lpDecryptedData, dwDataLen + 1); CopyMemory(*lpDecryptedData, lpEncryptedData, dwDataLen); delete[]lpEncryptedData; } void WriteBytesFile(LPTSTR lpFileName, BYTE* content, DWORD dwDataLen) { HANDLE hFile = CreateFile(lpFileName, GENERIC_READ | GENERIC_WRITE, 0x7, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL); DWORD dwBytesWritten = 0; bool result = WriteFile(hFile, content, dwDataLen, &dwBytesWritten, NULL); CloseHandle(hFile); } void ReadBytesFile(LPTSTR lpFileName, BYTE **content, DWORD *dwDataLen) { HANDLE hFile = CreateFile(lpFileName, GENERIC_READ, 0x7, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL); DWORD dwFileLength = 0; DWORD dwBytesToRead = GetFileSize(hFile, NULL); DWORD dwBytesRead = 0; *content = new BYTE[dwBytesToRead + 1]; SecureZeroMemory(*content, dwBytesToRead + 1); ReadFile(hFile, *content, dwBytesToRead, &dwBytesRead, NULL); *dwDataLen = dwBytesRead; CloseHandle(hFile); }

C代码是：

const int PROVIDER_RSA_FULL = 1;
    const string SERVICE_PROVIDER = "Microsoft Enhanced Cryptographic Provider v1.0"; //128 bit encryption
    static void Main(string[] args)
    {
        //var publicKey = File.ReadAllBytes("D:\\RSA\\pubkey.afp");
        var privateKey = File.ReadAllBytes("D:\\RSA\\privateKey.txt");
        var Data = File.ReadAllBytes("D:\\RSA\\encryptedData.txt");



        RSACryptoServiceProvider rsa;


        CspParameters cspParams;
        cspParams = new CspParameters(PROVIDER_RSA_FULL);

        cspParams.Flags =  CspProviderFlags.UseExistingKey | CspProviderFlags.UseMachineKeyStore;
        cspParams.ProviderName = SERVICE_PROVIDER;

        using (rsa = new RSACryptoServiceProvider(2048,cspParams))
        {
        rsa.ImportCspBlob(privateKey);
        // ----------------------------------------------------------------------
        byte[] result = rsa.Decrypt(Data, true);
        Console.WriteLine(Convert.ToString(result));
        }
    }

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谁能帮助我？

解决此问题的最佳方法是使用托管C++

创建LIB C++，使用托管C++中的LIB，然后可以使用C＜/P>中的托管文件