lib/sha1.h

   1 /*
   2  * This file is from the Apache Portable Runtime Library.
   3  * The full upstream copyright and license statement is included below.
   4  * Modifications copyright (c) 2009 Nicira Networks.
   5  */
   6
   7 /* Licensed to the Apache Software Foundation (ASF) under one or more
   8  * contributor license agreements.  See the NOTICE file distributed with
   9  * this work for additional information regarding copyright ownership.
  10  * The ASF licenses this file to You under the Apache License, Version 2.0
  11  * (the "License"); you may not use this file except in compliance with
  12  * the License.  You may obtain a copy of the License at
  13  *
  14  *     http://www.apache.org/licenses/LICENSE-2.0
  15  *
  16  * Unless required by applicable law or agreed to in writing, software
  17  * distributed under the License is distributed on an "AS IS" BASIS,
  18  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  19  * See the License for the specific language governing permissions and
  20  * limitations under the License.
  21  */
  22 /* NIST Secure Hash Algorithm
  23  *      heavily modified by Uwe Hollerbach uh@alumni.caltech edu
  24  *      from Peter C. Gutmann's implementation as found in
  25  *      Applied Cryptography by Bruce Schneier
  26  *      This code is hereby placed in the public domain
  27  */
  28
  29 #ifndef SHA1_H
  30 #define SHA1_H
  31
  32 #include <stddef.h>
  33 #include <stdint.h>
  34
  35 /* Size of the SHA1 digest. */
  36 #define SHA1_DIGEST_SIZE 20
  37
  38 /* SHA1 context structure. */
  39 struct sha1_ctx {
  40     uint32_t digest[5];          /* Message digest. */
  41     uint32_t count_lo, count_hi; /* 64-bit bit counts. */
  42     uint32_t data[16];           /* SHA data buffer */
  43     int local;                   /* Unprocessed amount in data. */
  44 };
  45
  46 void sha1_init(struct sha1_ctx *);
  47 void sha1_update(struct sha1_ctx *, const void *, size_t);
  48 void sha1_final(struct sha1_ctx *, uint8_t digest[SHA1_DIGEST_SIZE]);
  49 void sha1_bytes(const void *, size_t, uint8_t digest[SHA1_DIGEST_SIZE]);
  50
  51 #endif  /* sha1.h */