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-rw-r--r--libs/libcurl/src/hmac.c344
1 files changed, 172 insertions, 172 deletions
diff --git a/libs/libcurl/src/hmac.c b/libs/libcurl/src/hmac.c
index dfb0db5757..b0111bb59e 100644
--- a/libs/libcurl/src/hmac.c
+++ b/libs/libcurl/src/hmac.c
@@ -1,172 +1,172 @@
-/***************************************************************************
- * _ _ ____ _
- * Project ___| | | | _ \| |
- * / __| | | | |_) | |
- * | (__| |_| | _ <| |___
- * \___|\___/|_| \_\_____|
- *
- * Copyright (C) 1998 - 2022, 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
- * are also available at https://curl.se/docs/copyright.html.
- *
- * You may opt to use, copy, modify, merge, publish, distribute and/or sell
- * copies of the Software, and permit persons to whom the Software is
- * furnished to do so, under the terms of the COPYING file.
- *
- * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
- * KIND, either express or implied.
- *
- * SPDX-License-Identifier: curl
- *
- * RFC2104 Keyed-Hashing for Message Authentication
- *
- ***************************************************************************/
-
-#include "curl_setup.h"
-
-#ifndef CURL_DISABLE_CRYPTO_AUTH
-
-#include <curl/curl.h>
-
-#include "curl_hmac.h"
-#include "curl_memory.h"
-#include "warnless.h"
-
-/* The last #include file should be: */
-#include "memdebug.h"
-
-/*
- * Generic HMAC algorithm.
- *
- * This module computes HMAC digests based on any hash function. Parameters
- * and computing procedures are set-up dynamically at HMAC computation context
- * initialization.
- */
-
-static const unsigned char hmac_ipad = 0x36;
-static const unsigned char hmac_opad = 0x5C;
-
-
-
-struct HMAC_context *
-Curl_HMAC_init(const struct HMAC_params *hashparams,
- const unsigned char *key,
- unsigned int keylen)
-{
- size_t i;
- struct HMAC_context *ctxt;
- unsigned char *hkey;
- unsigned char b;
-
- /* Create HMAC context. */
- i = sizeof(*ctxt) + 2 * hashparams->hmac_ctxtsize +
- hashparams->hmac_resultlen;
- ctxt = malloc(i);
-
- if(!ctxt)
- return ctxt;
-
- ctxt->hmac_hash = hashparams;
- ctxt->hmac_hashctxt1 = (void *) (ctxt + 1);
- ctxt->hmac_hashctxt2 = (void *) ((char *) ctxt->hmac_hashctxt1 +
- hashparams->hmac_ctxtsize);
-
- /* If the key is too long, replace it by its hash digest. */
- if(keylen > hashparams->hmac_maxkeylen) {
- (*hashparams->hmac_hinit)(ctxt->hmac_hashctxt1);
- (*hashparams->hmac_hupdate)(ctxt->hmac_hashctxt1, key, keylen);
- hkey = (unsigned char *) ctxt->hmac_hashctxt2 + hashparams->hmac_ctxtsize;
- (*hashparams->hmac_hfinal)(hkey, ctxt->hmac_hashctxt1);
- key = hkey;
- keylen = hashparams->hmac_resultlen;
- }
-
- /* Prime the two hash contexts with the modified key. */
- (*hashparams->hmac_hinit)(ctxt->hmac_hashctxt1);
- (*hashparams->hmac_hinit)(ctxt->hmac_hashctxt2);
-
- for(i = 0; i < keylen; i++) {
- b = (unsigned char)(*key ^ hmac_ipad);
- (*hashparams->hmac_hupdate)(ctxt->hmac_hashctxt1, &b, 1);
- b = (unsigned char)(*key++ ^ hmac_opad);
- (*hashparams->hmac_hupdate)(ctxt->hmac_hashctxt2, &b, 1);
- }
-
- for(; i < hashparams->hmac_maxkeylen; i++) {
- (*hashparams->hmac_hupdate)(ctxt->hmac_hashctxt1, &hmac_ipad, 1);
- (*hashparams->hmac_hupdate)(ctxt->hmac_hashctxt2, &hmac_opad, 1);
- }
-
- /* Done, return pointer to HMAC context. */
- return ctxt;
-}
-
-int Curl_HMAC_update(struct HMAC_context *ctxt,
- const unsigned char *data,
- unsigned int len)
-{
- /* Update first hash calculation. */
- (*ctxt->hmac_hash->hmac_hupdate)(ctxt->hmac_hashctxt1, data, len);
- return 0;
-}
-
-
-int Curl_HMAC_final(struct HMAC_context *ctxt, unsigned char *result)
-{
- const struct HMAC_params *hashparams = ctxt->hmac_hash;
-
- /* Do not get result if called with a null parameter: only release
- storage. */
-
- if(!result)
- result = (unsigned char *) ctxt->hmac_hashctxt2 +
- ctxt->hmac_hash->hmac_ctxtsize;
-
- (*hashparams->hmac_hfinal)(result, ctxt->hmac_hashctxt1);
- (*hashparams->hmac_hupdate)(ctxt->hmac_hashctxt2,
- result, hashparams->hmac_resultlen);
- (*hashparams->hmac_hfinal)(result, ctxt->hmac_hashctxt2);
- free((char *) ctxt);
- 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 struct HMAC_params *hashparams,
- const unsigned char *key, const size_t keylen,
- const unsigned char *data, const size_t datalen,
- unsigned char *output)
-{
- struct 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 */
+/***************************************************************************
+ * _ _ ____ _
+ * Project ___| | | | _ \| |
+ * / __| | | | |_) | |
+ * | (__| |_| | _ <| |___
+ * \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 1998 - 2022, 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
+ * are also available at https://curl.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ * SPDX-License-Identifier: curl
+ *
+ * RFC2104 Keyed-Hashing for Message Authentication
+ *
+ ***************************************************************************/
+
+#include "curl_setup.h"
+
+#ifndef CURL_DISABLE_CRYPTO_AUTH
+
+#include <curl/curl.h>
+
+#include "curl_hmac.h"
+#include "curl_memory.h"
+#include "warnless.h"
+
+/* The last #include file should be: */
+#include "memdebug.h"
+
+/*
+ * Generic HMAC algorithm.
+ *
+ * This module computes HMAC digests based on any hash function. Parameters
+ * and computing procedures are set-up dynamically at HMAC computation context
+ * initialization.
+ */
+
+static const unsigned char hmac_ipad = 0x36;
+static const unsigned char hmac_opad = 0x5C;
+
+
+
+struct HMAC_context *
+Curl_HMAC_init(const struct HMAC_params *hashparams,
+ const unsigned char *key,
+ unsigned int keylen)
+{
+ size_t i;
+ struct HMAC_context *ctxt;
+ unsigned char *hkey;
+ unsigned char b;
+
+ /* Create HMAC context. */
+ i = sizeof(*ctxt) + 2 * hashparams->hmac_ctxtsize +
+ hashparams->hmac_resultlen;
+ ctxt = malloc(i);
+
+ if(!ctxt)
+ return ctxt;
+
+ ctxt->hmac_hash = hashparams;
+ ctxt->hmac_hashctxt1 = (void *) (ctxt + 1);
+ ctxt->hmac_hashctxt2 = (void *) ((char *) ctxt->hmac_hashctxt1 +
+ hashparams->hmac_ctxtsize);
+
+ /* If the key is too long, replace it by its hash digest. */
+ if(keylen > hashparams->hmac_maxkeylen) {
+ (*hashparams->hmac_hinit)(ctxt->hmac_hashctxt1);
+ (*hashparams->hmac_hupdate)(ctxt->hmac_hashctxt1, key, keylen);
+ hkey = (unsigned char *) ctxt->hmac_hashctxt2 + hashparams->hmac_ctxtsize;
+ (*hashparams->hmac_hfinal)(hkey, ctxt->hmac_hashctxt1);
+ key = hkey;
+ keylen = hashparams->hmac_resultlen;
+ }
+
+ /* Prime the two hash contexts with the modified key. */
+ (*hashparams->hmac_hinit)(ctxt->hmac_hashctxt1);
+ (*hashparams->hmac_hinit)(ctxt->hmac_hashctxt2);
+
+ for(i = 0; i < keylen; i++) {
+ b = (unsigned char)(*key ^ hmac_ipad);
+ (*hashparams->hmac_hupdate)(ctxt->hmac_hashctxt1, &b, 1);
+ b = (unsigned char)(*key++ ^ hmac_opad);
+ (*hashparams->hmac_hupdate)(ctxt->hmac_hashctxt2, &b, 1);
+ }
+
+ for(; i < hashparams->hmac_maxkeylen; i++) {
+ (*hashparams->hmac_hupdate)(ctxt->hmac_hashctxt1, &hmac_ipad, 1);
+ (*hashparams->hmac_hupdate)(ctxt->hmac_hashctxt2, &hmac_opad, 1);
+ }
+
+ /* Done, return pointer to HMAC context. */
+ return ctxt;
+}
+
+int Curl_HMAC_update(struct HMAC_context *ctxt,
+ const unsigned char *data,
+ unsigned int len)
+{
+ /* Update first hash calculation. */
+ (*ctxt->hmac_hash->hmac_hupdate)(ctxt->hmac_hashctxt1, data, len);
+ return 0;
+}
+
+
+int Curl_HMAC_final(struct HMAC_context *ctxt, unsigned char *result)
+{
+ const struct HMAC_params *hashparams = ctxt->hmac_hash;
+
+ /* Do not get result if called with a null parameter: only release
+ storage. */
+
+ if(!result)
+ result = (unsigned char *) ctxt->hmac_hashctxt2 +
+ ctxt->hmac_hash->hmac_ctxtsize;
+
+ (*hashparams->hmac_hfinal)(result, ctxt->hmac_hashctxt1);
+ (*hashparams->hmac_hupdate)(ctxt->hmac_hashctxt2,
+ result, hashparams->hmac_resultlen);
+ (*hashparams->hmac_hfinal)(result, ctxt->hmac_hashctxt2);
+ free((char *) ctxt);
+ 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 struct HMAC_params *hashparams,
+ const unsigned char *key, const size_t keylen,
+ const unsigned char *data, const size_t datalen,
+ unsigned char *output)
+{
+ struct 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 */
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