include/digest.h

   1 /*
   2  * (C) Copyright 2007-2010  Josef 'Jeff' Sipek <jeffpc@josefsipek.net>
   3  *
   4  * This file is released under the GPLv2.  See the COPYING file for more
   5  * details.
   6  */
   7
   8 #ifndef __DIGEST_H
   9 #define __DIGEST_H
  10
  11 #define DIGEST_QUERY            0
  12 #define DIGEST_SHA1             1
  13
  14 struct digest_ctx_sha1 {
  15         u32 H[5];
  16         u64 mbl;
  17         u8 buflen;
  18         u8 buf[64];
  19 } __attribute__((packed,aligned(8)));
  20
  21 struct digest_ctx {
  22         u8 type;
  23         u8 __reserved[7];
  24         union {
  25                 struct digest_ctx_sha1 sha1;
  26         };
  27 };
  28
  29 struct digest_info {
  30         void (*init)(struct digest_ctx *);
  31         void (*update)(struct digest_ctx *, u8 *, u64);
  32         void (*finalize)(struct digest_ctx *, u8 *, u64);
  33 };
  34
  35 extern int digest_init_ctx(int dt, struct digest_ctx *ctx);
  36 extern void digest_update_ctx(struct digest_ctx *ctx, u8 *data, u64 len);
  37 extern void digest_finalize_ctx(struct digest_ctx *ctx, u8 *data, u64 len);
  38
  39 #endif