Linux: enable building with a local version of libssl.

net/third_party/nss/ssl/bodge/alghmac.h

+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is the Netscape security libraries.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1994-2000
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either the GNU General Public License Version 2 or later (the "GPL"), or
+ * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+#ifndef _ALGHMAC_H_
+#define _ALGHMAC_H_
+
+typedef struct HMACContextStr HMACContext;
+
+SEC_BEGIN_PROTOS
+
+/* destroy HMAC context */
+extern void
+HMAC_Destroy(HMACContext *cx, PRBool freeit);
+
+/* create HMAC context
+ *  hash_obj    hash object from SECRawHashObjects[]
+ *  secret      the secret with which the HMAC is performed.
+ *  secret_len  the length of the secret.
+ *  isFIPS      true if conforming to FIPS 198.
+ *
+ * NULL is returned if an error occurs.
+ */
+extern HMACContext *
+HMAC_Create(const SECHashObject *hash_obj, const unsigned char *secret, 
+            unsigned int secret_len, PRBool isFIPS);
+
+/* like HMAC_Create, except caller allocates HMACContext. */
+SECStatus
+HMAC_Init(HMACContext *cx, const SECHashObject *hash_obj, 
+          const unsigned char *secret, unsigned int secret_len, PRBool isFIPS);
+
+/* reset HMAC for a fresh round */
+extern void
+HMAC_Begin(HMACContext *cx);
+
+/* update HMAC 
+ *  cx          HMAC Context
+ *  data        the data to perform HMAC on
+ *  data_len    the length of the data to process
+ */
+extern void 
+HMAC_Update(HMACContext *cx, const unsigned char *data, unsigned int data_len);
+
+/* Finish HMAC -- place the results within result
+ *  cx          HMAC context
+ *  result      buffer for resulting hmac'd data
+ *  result_len  where the resultant hmac length is stored
+ *  max_result_len  maximum possible length that can be stored in result
+ */
+extern SECStatus
+HMAC_Finish(HMACContext *cx, unsigned char *result, unsigned int *result_len,
+            unsigned int max_result_len);
+
+/* clone a copy of the HMAC state.  this is usefult when you would
+ * need to keep a running hmac but also need to extract portions 
+ * partway through the process.
+ */
+extern HMACContext *
+HMAC_Clone(HMACContext *cx);
+
+SEC_END_PROTOS
+
+#endif