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ntlm: Moved the HMAC MD5 function into the HMAC module as a generic function

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Steve Holme 2020-02-23 22:37:43 +00:00
parent fa009cc798
commit 7def168a4f
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3 changed files with 56 additions and 31 deletions
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39
lib/hmac.c
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@ -5,7 +5,7 @@
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) 1998 - 2018, Daniel Stenberg, <daniel@haxx.se>, et al.
* Copyright (C) 1998 - 2020, Daniel Stenberg, <daniel@haxx.se>, et al.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
@ -30,6 +30,7 @@
#include "curl_hmac.h"
#include "curl_memory.h"
#include "warnless.h"
/* The last #include file should be: */
#include "memdebug.h"
@ -129,4 +130,40 @@ int Curl_HMAC_final(HMAC_context *ctxt, unsigned char *result)
return 0;
}
/*
* Curl_hmacit()
*
* This is used to generate a HMAC hash, for the specified input data, given
* the specified hash function and key.
*
* Parameters:
*
* hashparams [in] - The hash function (Curl_HMAC_MD5).
* key [in] - The key to use.
* keylen [in] - The length of the key.
* data [in] - The data to encrypt.
* datalen [in] - The length of the data.
* output [in/out] - The output buffer.
*
* Returns CURLE_OK on success.
*/
CURLcode Curl_hmacit(const HMAC_params *hashparams,
const unsigned char *key, const size_t keylen,
const unsigned char *data, const size_t datalen,
unsigned char *output)
{
HMAC_context *ctxt = Curl_HMAC_init(hashparams, key, curlx_uztoui(keylen));
if(!ctxt)
return CURLE_OUT_OF_MEMORY;
/* Update the digest with the given challenge */
Curl_HMAC_update(ctxt, data, curlx_uztoui(datalen));
/* Finalise the digest */
Curl_HMAC_final(ctxt, output);
return CURLE_OK;
}
#endif /* CURL_DISABLE_CRYPTO_AUTH */