ceph/src/spdk/lib/iscsi/md5.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright (C) 2008-2012 Daisuke Aoyama <aoyama@peach.ne.jp>.
   5  *   Copyright (c) Intel Corporation.
   6  *   All rights reserved.
   7  *
   8  *   Redistribution and use in source and binary forms, with or without
   9  *   modification, are permitted provided that the following conditions
  10  *   are met:
  11  *
  12  *     * Redistributions of source code must retain the above copyright
  13  *       notice, this list of conditions and the following disclaimer.
  14  *     * Redistributions in binary form must reproduce the above copyright
  15  *       notice, this list of conditions and the following disclaimer in
  16  *       the documentation and/or other materials provided with the
  17  *       distribution.
  18  *     * Neither the name of Intel Corporation nor the names of its
  19  *       contributors may be used to endorse or promote products derived
  20  *       from this software without specific prior written permission.
  21  *
  22  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  23  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  24  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  25  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  26  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  27  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  28  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  29  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  30  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  31  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  32  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  33  */
  34
  35 #include "spdk/stdinc.h"
  36
  37 #include <openssl/md5.h>
  38
  39 #include "iscsi/md5.h"
  40
  41 int md5init(struct spdk_md5ctx *md5ctx)
  42 {
  43         int rc;
  44
  45         if (md5ctx == NULL) {
  46                 return -1;
  47         }
  48         rc = MD5_Init(&md5ctx->md5ctx);
  49         return rc;
  50 }
  51
  52 int md5final(void *md5, struct spdk_md5ctx *md5ctx)
  53 {
  54         int rc;
  55
  56         if (md5ctx == NULL || md5 == NULL) {
  57                 return -1;
  58         }
  59         rc = MD5_Final(md5, &md5ctx->md5ctx);
  60         return rc;
  61 }
  62
  63 int md5update(struct spdk_md5ctx *md5ctx, const void *data, size_t len)
  64 {
  65         int rc;
  66
  67         if (md5ctx == NULL) {
  68                 return -1;
  69         }
  70         if (data == NULL || len == 0) {
  71                 return 0;
  72         }
  73         rc = MD5_Update(&md5ctx->md5ctx, data, len);
  74         return rc;
  75 }