Converting old C++ crypto code to .NET
From: Mark Frishman (mfrishman_nospam_at_hotmail.com)
Date: 02/05/04
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Date: Thu, 5 Feb 2004 10:07:43 -0500
If I have the following C++ code:
HCRYPTPROV hCryptProv;
HCRYPTHASH hHash;
HCRYPTKEY hKey;
CReadOnlyVariant bLocPassword(&bPassword);
CReadOnlyVariant bLocPlainText(&bPlainText);
*nRC = -1;
if(CryptAcquireContext(&hCryptProv, NULL, NULL, PROV_RSA_FULL,
CRYPT_VERIFYCONTEXT)) {
if(CryptCreateHash(hCryptProv, CALG_MD5, 0, 0, &hHash)) {
if(CryptHashData(hHash, bLocPassword.GetData(), bLocPassword.GetSize(),
0)) {
if(CryptDeriveKey(hCryptProv, CALG_RC4, hHash, 0, &hKey)) {
DWORD dwBufferLen = bLocPlainText.GetSize();
DWORD dwDataLen = dwBufferLen;
BYTE *pbBuffer = (BYTE *) malloc(dwBufferLen);
memcpy(pbBuffer, bLocPlainText.GetData(), dwBufferLen);
if(CryptEncrypt(hKey, 0, TRUE, 0, pbBuffer, &dwDataLen, dwBufferLen)) {
What would be the equivalent .NET objects/methods to do this. Obviously I
want my new encryption algorithm to produce the same results as the old one.
- Next message: Daniel Bass: "Windows authentication on a Web service returning Access Denied (401)."
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