src/util/sha1.h

   1 #ifndef EL__UTIL_SHA1_H
   2 #define EL__UTIL_SHA1_H
   3
   4 /* The contents of this file are subject to the Mozilla Public
   5  * License Version 1.1 (the "License"); you may not use this file
   6  * except in compliance with the License. You may obtain a copy of
   7  * the License at http://www.mozilla.org/MPL/
   8  *
   9  * Software distributed under the License is distributed on an "AS
  10  * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
  11  * implied. See the License for the specific language governing
  12  * rights and limitations under the License.
  13  *
  14  * The Original Code is SHA 180-1 Header File
  15  *
  16  * The Initial Developer of the Original Code is Paul Kocher of
  17  * Cryptography Research.  Portions created by Paul Kocher are
  18  * Copyright (C) 1995-9 by Cryptography Research, Inc.  All
  19  * Rights Reserved.
  20  *
  21  * Contributor(s):
  22  *
  23  *     Paul Kocher
  24  *
  25  * Alternatively, the contents of this file may be used under the
  26  * terms of the GNU General Public License Version 2 or later (the
  27  * "GPL"), in which case the provisions of the GPL are applicable
  28  * instead of those above.  If you wish to allow use of your
  29  * version of this file only under the terms of the GPL and not to
  30  * allow others to use your version of this file under the MPL,
  31  * indicate your decision by deleting the provisions above and
  32  * replace them with the notice and other provisions required by
  33  * the GPL.  If you do not delete the provisions above, a recipient
  34  * may use your version of this file under either the MPL or the
  35  * GPL. */
  36
  37 /* Optionally SHA1 support can depend on external implementation when linking
  38  * against a SSL library that supports it. */
  39 #if defined(CONFIG_OWN_LIBC)
  40 #define CONFIG_SHA1 1
  41 #elif defined(CONFIG_OPENSSL)
  42 #include <openssl/sha.h>
  43 #else
  44 #define CONFIG_SHA1 1
  45 #endif
  46
  47 #ifndef SHA_DIGEST_LENGTH
  48 #define SHA_DIGEST_LENGTH 20
  49 #endif
  50
  51 #define SHA_HEX_DIGEST_LENGTH (SHA_DIGEST_LENGTH * 2)
  52
  53 typedef unsigned char sha1_digest_bin_T[SHA_DIGEST_LENGTH];
  54 typedef unsigned char sha1_digest_hex_T[SHA_HEX_DIGEST_LENGTH];
  55
  56 struct sha1_context {
  57         unsigned int H[5];
  58         unsigned int W[80];
  59         int lenW;
  60         unsigned int sizeHi,sizeLo;
  61 };
  62
  63 void init_sha1(struct sha1_context *context);
  64 void update_sha1(struct sha1_context *context, const unsigned char *data, unsigned long length);
  65 void done_sha1(struct sha1_context *context, sha1_digest_bin_T digest);
  66
  67 unsigned char *
  68 digest_sha1(const unsigned char *data, unsigned long length, sha1_digest_bin_T digest);
  69
  70 #ifdef CONFIG_SHA1
  71 /* Provide compatibility with the OpenSSL interface: */
  72
  73 typedef struct sha1_context SHA_CTX;
  74 #define SHA1_Init(context)              init_sha1(context)
  75 #define SHA1_Update(context, data, len) update_sha1(context, data, len)
  76 #define SHA1_Final(sha1, context)       done_sha1(context, sha1)
  77 #define SHA1(data, len, sha1)           digest_sha1(data, len, sha1)
  78
  79 #endif /* CONFIG_SHA1 */
  80
  81 #endif