if you use the unsimplefied version of the cryptoapi you have to reverse the bytes auf your results before using them.

>
>Hi!
>
>I am trying to convert my code of 3DES encoding from Windows CryptoAPI to
>OpenSSL. Could you verify the code attached and may be point me to
>appropriate OpenSSL functions?
>
>/////////////////////////////////////////////////
>////////////////////////////////////////////////
>// Windows CryptoAPI // OpenSSL
> //
>HCRYPTPROV hProv; //
>CryptAcquireContext(&hProv, NULL, //
> MS_ENHANCED_PROV, PROV_RSA_FULL, //
> CRYPT_VERIFYCONTEXT)); //
> //
>HCRYPTHASH hHash; //
>CryptCreateHash(hProv, CALG_MD5, 0, 0, &hHash); //
> //
>unsigned char *user_key, ukeyl; //
>CryptHashData(hHash, user_key, ukeyl, 0); //
> //
> //
>// 192-bit or 24-byte key length // unsigned
>char *user_key, user_key_len;
>const unsigned int derived_key_len = 0xC0 << 0x10; // unsigned char
>*derived_key, derived_key_len;
> //
>unsigned char *iv = NULL;
>HCRYPTKEY hKey; //
>CryptDeriveKey(hProv, CALG_3DES, // derived_key_len
>= EVP_BytesToKey(
> hHash, derived_key_len, &hKey); //
>EVP_des_ede3_cbc(), EVP_md5(), NULL,
> //
>
>user_key, user_key_len, 1,
> //
>
>derived_key, iv);
> //
> //
>EVP_CIPHER_CTX ctx = {};
> //
>EVP_EncryptInit(&ctx,
> //
>
>EVP_des_ede3_cbc(), derived_key, iv);
> //
>const unsigned char* text; // const
>unsigned char* text;
>int encoded_len; //
>unsigned char* encoded;
>bool FinalBlock = false; // int
>text_len, encoded_len;
> //
>CryptEncrypt(hKey, 0, FinalBlock, 0, //
>EVP_EncryptUpdate(&ctx,
> text, &encoded_len, 1024); // encoded,
>&encoded_len, text, text_len);
> //
>FinalBlock = true; //
>CryptEncrypt(hKey, 0, FinalBlock, 0, //
>EVP_EncryptFinal_ex(&ctx,
> text, &encoded_len, 1024); // encoded +
>encoded_len, NULL);
>
>--
>View this message in context:
>http://www.nabble.com/DES3%3A-Window...9809.html#a134
>03663
>Sent from the OpenSSL - User mailing list archive at Nabble.com.
>
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