usr/src/lib/libsasl/include/hmac-md5.h

   1 /*
   2  * Copyright 2003 Sun Microsystems, Inc.  All rights reserved.
   3  * Use is subject to license terms.
   4  */
   5
   6 #pragma ident   "%Z%%M% %I%     %E% SMI"
   7
   8 /* hmac-md5.h -- HMAC_MD5 functions
   9  */
  10
  11 #ifndef HMAC_MD5_H
  12 #define HMAC_MD5_H 1
  13
  14 #define HMAC_MD5_SIZE 16
  15
  16 #ifdef _SUN_SDK_
  17 #ifndef SASLPLUG_H
  18 #include <sasl/saslplug.h>
  19 #endif
  20 #else
  21 /* intermediate MD5 context */
  22 typedef struct HMAC_MD5_CTX_s {
  23     MD5_CTX ictx, octx;
  24 } HMAC_MD5_CTX;
  25
  26 /* intermediate HMAC state
  27  *  values stored in network byte order (Big Endian)
  28  */
  29 typedef struct HMAC_MD5_STATE_s {
  30     UINT4 istate[4];
  31     UINT4 ostate[4];
  32 } HMAC_MD5_STATE;
  33 #endif /* _SUN_SDK */
  34
  35 /* One step hmac computation
  36  *
  37  * digest may be same as text or key
  38  */
  39 void _sasl_hmac_md5(const unsigned char *text, int text_len,
  40                     const unsigned char *key, int key_len,
  41                     unsigned char digest[HMAC_MD5_SIZE]);
  42
  43 /* create context from key
  44  */
  45 void _sasl_hmac_md5_init(HMAC_MD5_CTX *hmac,
  46                          const unsigned char *key, int key_len);
  47
  48 /* precalculate intermediate state from key
  49  */
  50 void _sasl_hmac_md5_precalc(HMAC_MD5_STATE *hmac,
  51                             const unsigned char *key, int key_len);
  52
  53 /* initialize context from intermediate state
  54  */
  55 void _sasl_hmac_md5_import(HMAC_MD5_CTX *hmac, HMAC_MD5_STATE *state);
  56
  57 #define _sasl_hmac_md5_update(hmac, text, text_len) _sasl_MD5Update(&(hmac)->ictx, (text), (text_len))
  58
  59 /* finish hmac from intermediate result.  Intermediate result is zeroed.
  60  */
  61 void _sasl_hmac_md5_final(unsigned char digest[HMAC_MD5_SIZE],
  62                           HMAC_MD5_CTX *hmac);
  63
  64 #endif /* HMAC_MD5_H */