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Error During Cryptcreatehash


Finally, with the help of Google, I solved the problem. Why is `always-confirm-transfers = 1` not the default? www.pudn.com > cryptapi_demo.zip > CryptDecrypt.cpp, change:1999-03-28,size:6745b // CryptDecrypt.cpp : Defines the entry point for the console application. // #include "stdafx.h" #define _WIN32_WINNT 0x0400 #include #include #include BOOL SetupCryptoClient() With Office 365, you get access to Microsoft™ Office solutions practically anytime, anywhere, on virtually any device.

if (CryptAcquireContext(&hProv, NULL, NULL, PROV_RSA_FULL, 0)) { // Create hash object. Featured Post IT, Stop Being Called Into Every Meeting Promoted by Highfive Highfive is so simple that setting up every meeting room takes just minutes and every employee will be able dwFlags [in] The following flag value is defined. Try yanking MS_ENHANCED_PROV.

Error During Cryptcreatehash

This code has existed in our codebase for years and no problems have been experienced on any other platform. Often it has to be saved to the registry and read later from there. bResult = FALSE; } CryptReleaseContext(hProv, 0); } ::RegCloseKey(hRegKey); } else bResult = FALSE; return bResult; } Now to save a password (any string) encrypted to the registry we should do: TCHAR Especially the fact that you try to use CryptImportKey might have more consequences than you thought (as far as acquiring a provider context is concerned) –sehe Sep 25 '11 at 20:07

It creates and returns to the calling application a handle to a cryptographic service provider (CSP) hash object. I don't want to get lung cancer like you do Is there a notion of causality in physical laws? Hope this is helpful. :-) share|improve this answer answered Sep 6 at 7:01 GrepAll 185 add a comment| Your Answer draft saved draft discarded Sign up or log in Sign Cryptderivekey IE uses the Crypto API to do it's own 40 bit or 128 bit encryption.

Comment Submit Your Comment By clicking you are agreeing to Experts Exchange's Terms of Use. more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed I can compile and run but CryptDecrypt doesn't modify the data pbData inout variable. http://stackoverflow.com/questions/4191312/windows-cryptoapi-cryptsignhash-with-calg-sha-256-and-private-key-from-my-keyst Solved CryptCreateHash Method returns false in VB.net Posted on 2004-01-04 Programming Languages-Other 1 Verified Solution 3 Comments 1,320 Views Last Modified: 2008-03-06 Hi friends i'm getting return value "false" in method

if (!CryptAcquireContext( &hProv, NULL, MS_STRONG_PROV, // allow 2048 bit keys, in case you need it PROV_RSA_FULL, CRYPT_MACHINE_KEYSET)) // just a guess Now my program results in 0x80090016: Keyset does not exist. Calg_sha_256 Example DWORD dwType = REG_BINARY; // Add the password. CryptReleaseContext(hProv, 0); return FALSE; } else { CryptDestroyKey(hKey); } } else { // Error during CryptGetUserKey! You can't arm yourself against today's rapidly increasing threats unless you understand how they work.


Should I serve jury duty when I have no respect for the judge? if(hHash) CryptDestroyHash(hHash); if(hCryptProv) CryptReleaseContext(hCryptProv,0); Requirements Minimum supported client Windows XP [desktop apps only] Minimum supported server Windows Server 2003 [desktop apps only] Header Wincrypt.h Library Advapi32.lib DLL Advapi32.dll See also Hash and Digital Error During Cryptcreatehash So how do I avoid the EOF in encrypted data?? Calg_sha However, since I save the encrypted data to a file and read it back at a later time, an EOF in the data would totally cripple the fil i/o involved in

Posted by Legacy on 10/25/2000 12:00am Originally posted by: Joe I try to use CryptoAPI for Windows (MFC) application, however, I got compile errors ( w98/w2000, vc6), " CryptoDoc.cpp(263) : error Wrong password - number of retries - what's a good number to allow? HCRYPTPROV hCryptProv; HCRYPTHASH hHash; //-------------------------------------------------------------------- // Get a handle to a cryptography provider context. Join our community for more solutions or to ask questions. Cryptsethashparam

share|improve this answer edited Nov 16 '10 at 10:08 answered Nov 16 '10 at 8:43 Rasmus Faber 31.6k17106160 I'd love to try your suggestion, but I cannot find a The password must be saved encrypted with an encryption key. How does the spell "Find Steed" work with Aura of Vitality? if (!CryptGenKey(hProv,AT_KEYEXCHANGE,0,&hKey)) { // Error during CryptGenKey!

I can not, for the life of me get this working. Crypthashdata Example All Rights Reserved. if (CryptCreateHash(hProv, CALG_MD5, 0, 0, &hHash)) { // Hash password string.

You should check out pinvoke.net, which has managed prototypes and examples for most Windows API calls.

  1. Usage of the word "steward" Allele frequency question Why are so many metros underground?
  2. Since I would have a provider handle, I would also need to replace CryptAcquireCertificatePrivateKey by CryptGetUserKey.
  3. Join the community of 500,000 technology professionals and ask your questions.

BYTE *pbBuffer = (BYTE *)malloc(dwLength); if (pbBuffer != NULL) { memcpy(pbBuffer, szPassword, dwLength); // Encrypt data if (CryptEncrypt(hKey, 0, TRUE, 0, pbBuffer, &dwLength, dwLength)) { // Write data to registry. The result of the XOR operation is hashed, and then the target data for the HMAC (pointed to by the pbData parameter passed in the call to CryptHashData) is hashed. Posted by Legacy on 07/07/1999 12:00am Originally posted by: Matt Is there any chance that the encrypted string would include a NULL character? Cryptsignhash Programming Languages-Other C++ Introduction to C++: Vectors - Push and Pop Back Video by: Ian The viewer will be introduced to the member functions push_back and pop_back of the vector class.

CryptCreateHash function The CryptCreateHash function initiates the hashing of a stream of data. Instead, it is with the steps to do CryptImportKey. The following table shows some of the possible error codes. Not the answer you're looking for?

if (!CryptGenKey(hProv,AT_KEYEXCHANGE,0,&hKey)) { // Error during CryptGenKey! However, the Win32 API provides us with the ability to use pretty good encryption algorithms such as RC4, which is included in NT. When you have finished using the hash object, release the handle by calling the CryptDestroyHash function. TCHAR szLocalPassword[] = _T("[email protected]*"); // Get handle to user default provider.

HCRYPTPROV hProv = NULL; HCRYPTHASH hHash = NULL; HCRYPTKEY hKey = NULL; BYTE DesKeyBlob[] = { 0x70,0x61,0x73,0x73,0x77,0x6F,0x72,0x64 }; HCRYPTHASH hHmacHash = NULL; PBYTE pbHash = NULL; DWORD dwDataLen = 20; BYTE ERROR_NOT_ENOUGH_MEMORY The operating system ran out of memory during the operation. Syntax C++ Copy BOOL WINAPI CryptCreateHash( _In_  HCRYPTPROV hProv, _In_  ALG_ID     Algid, _In_  HCRYPTKEY  hKey, _In_  DWORD      dwFlags, _Out_ HCRYPTHASH *phHash ); Parameters hProv [in] A handle to a CSP created by a call to CryptAcquireContext. if (!CryptAcquireContext(&hProv, NULL, MS_DEF_PROV, PROV_RSA_FULL, CRYPT_NEWKEYSET)) { // Error creating key container!

share|improve this answer answered Oct 20 '15 at 23:22 255 11 add a comment| up vote 0 down vote I encountered a similar problem recently before I found this post. Looking for a term like "fundamentalism", but without a religious connotation Why does the race hazard theorem work? The certificate is binding with a CSP not supporting SHA-2, if we can convert it to a CSP supporting SHA-2, everything will be OK. Programming Languages-Other C++ Advertise Here 810 members asked questions and received personalized solutions in the past 7 days.

You might also try replacing the provider name with "Microsoft Enhanced RSA and AES Cryptographic Provider", but this will definitely not work unless the provider is one of the other Microsoft Valid values for this parameter vary, depending on the CSP that is used. Although this question was asked 5 years ago, I write my solution here in case it will help any other guy. This technique works even if the private key is not exportable.

Will credit card payment from abroad be suspicious as taxable income? The client call the Microsoft Crypto-API implementing RSA_method in OpenSSL to support the certificate authentication. Possibly this is a 32/64 bit related issue, presuming advapi32.dll is 32bit? The error codes prefaced by NTE are generated by the particular CSP you are using.