lib/libcrypto/libsha2/sha2.h

   1 #ifndef _SHA2_H
   2 #define _SHA2_H
   3 /*
   4  *  sha512.h
   5  *
   6  *  Written by Jari Ruusu, April 16 2001
   7  *
   8  *  Copyright 2001 by Jari Ruusu.
   9  *  Redistribution of this file is permitted under the GNU Public License.
  10  */
  11
  12 #ifdef __KERNEL__
  13 #include <linux/types.h>
  14 #else
  15 #include <sys/types.h>
  16 #endif
  17
  18 typedef struct {
  19     unsigned char   sha_out[64];    /* results are here, bytes 0...31 */
  20     u_int32_t       sha_H[8];
  21     u_int64_t       sha_blocks;
  22     int             sha_bufCnt;
  23 } sha256_context;
  24
  25 typedef struct {
  26     unsigned char   sha_out[128];   /* results are here, bytes 0...63 */
  27     u_int64_t       sha_H[8];
  28     u_int64_t       sha_blocks;
  29     u_int64_t       sha_blocksMSB;
  30     int             sha_bufCnt;
  31 } sha512_context;
  32
  33 /* no sha384_context, use sha512_context */
  34
  35 /* 256 bit hash, provides 128 bits of security against collision attacks */
  36 extern void sha256_init(sha256_context *);
  37 extern void sha256_write(sha256_context *, const unsigned char *, int);
  38 extern void sha256_final(sha256_context *);
  39 extern void sha256_hash_buffer(unsigned char *, int, unsigned char *, int);
  40
  41 /* 512 bit hash, provides 256 bits of security against collision attacks */
  42 extern void sha512_init(sha512_context *);
  43 extern void sha512_write(sha512_context *, const unsigned char *, int);
  44 extern void sha512_final(sha512_context *);
  45 extern void sha512_hash_buffer(unsigned char *, int, unsigned char *, int);
  46
  47 /* 384 bit hash, provides 192 bits of security against collision attacks */
  48 extern void sha384_init(sha512_context *);
  49 /* no sha384_write(), use sha512_write() */
  50 /* no sha384_final(), use sha512_final(), result in ctx->sha_out[0...47]  */
  51 extern void sha384_hash_buffer(unsigned char *, int, unsigned char *, int);
  52 #endif /* _SHA2_H */