src/util/sha1/sha1.h

   1 /*      $OpenBSD: sha1.h,v 1.24 2012/12/05 23:19:57 deraadt Exp $       */
   2
   3 /*
   4  * SHA-1 in C
   5  * By Steve Reid <steve@edmweb.com>
   6  * 100% Public Domain
   7  */
   8
   9 #ifndef _SHA1_H
  10 #define _SHA1_H
  11
  12 #include <stddef.h>
  13 #include <stdint.h>
  14
  15 #define SHA1_BLOCK_LENGTH               64
  16 #define SHA1_DIGEST_LENGTH              20
  17 #define SHA1_DIGEST_STRING_LENGTH       (SHA1_DIGEST_LENGTH * 2 + 1)
  18
  19 #ifdef __cplusplus
  20 extern "C" {
  21 #endif
  22
  23 typedef struct _SHA1_CTX {
  24     uint32_t state[5];
  25     uint64_t count;
  26     uint8_t buffer[SHA1_BLOCK_LENGTH];
  27 } SHA1_CTX;
  28
  29 void SHA1Init(SHA1_CTX *);
  30 void SHA1Pad(SHA1_CTX *);
  31 void SHA1Transform(uint32_t [5], const uint8_t [SHA1_BLOCK_LENGTH]);
  32 void SHA1Update(SHA1_CTX *, const uint8_t *, size_t);
  33 void SHA1Final(uint8_t [SHA1_DIGEST_LENGTH], SHA1_CTX *);
  34
  35 #define HTONDIGEST(x) do {                                              \
  36         x[0] = htonl(x[0]);                                             \
  37         x[1] = htonl(x[1]);                                             \
  38         x[2] = htonl(x[2]);                                             \
  39         x[3] = htonl(x[3]);                                             \
  40         x[4] = htonl(x[4]); } while (0)
  41
  42 #define NTOHDIGEST(x) do {                                              \
  43         x[0] = ntohl(x[0]);                                             \
  44         x[1] = ntohl(x[1]);                                             \
  45         x[2] = ntohl(x[2]);                                             \
  46         x[3] = ntohl(x[3]);                                             \
  47         x[4] = ntohl(x[4]); } while (0)
  48
  49 #ifdef __cplusplus
  50 }
  51 #endif
  52
  53 #endif /* _SHA1_H */