4185 New hash algorithm support

*** 20,29 ****
--- 20,30 ----
   */
  /*
   * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   */
+ /* Copyright 2013 Saso Kiselkov.  All rights reserved. */
  
  #ifndef _SYS_SHA2_H
  #define _SYS_SHA2_H
  
  #include <sys/types.h>          /* for uint_* */
*** 37,46 ****
--- 38,51 ----
  
  #define SHA256_DIGEST_LENGTH    32      /* SHA256 digest length in bytes */
  #define SHA384_DIGEST_LENGTH    48      /* SHA384 digest length in bytes */
  #define SHA512_DIGEST_LENGTH    64      /* SHA512 digest length in bytes */
  
+ /* Truncated versions of SHA-512 according to FIPS-180-4, section 5.3.6 */
+ #define SHA512_224_DIGEST_LENGTH        28      /* SHA512/224 digest length */
+ #define SHA512_256_DIGEST_LENGTH        32      /* SHA512/256 digest length */
+ 
  #define SHA256_HMAC_BLOCK_SIZE  64      /* SHA256-HMAC block size */
  #define SHA512_HMAC_BLOCK_SIZE  128     /* SHA512-HMAC block size */
  
  #define SHA256                  0
  #define SHA256_HMAC             1
*** 49,58 ****
--- 54,65 ----
  #define SHA384_HMAC             4
  #define SHA384_HMAC_GEN         5
  #define SHA512                  6
  #define SHA512_HMAC             7
  #define SHA512_HMAC_GEN         8
+ #define SHA512_224              9
+ #define SHA512_256              10
  
  /*
   * SHA2 context.
   * The contents of this structure are a private interface between the
   * Init/Update/Final calls of the functions defined below.
*** 128,138 ****
          SHA384_MECH_INFO_TYPE,          /* SUN_CKM_SHA384 */
          SHA384_HMAC_MECH_INFO_TYPE,     /* SUN_CKM_SHA384_HMAC */
          SHA384_HMAC_GEN_MECH_INFO_TYPE, /* SUN_CKM_SHA384_HMAC_GENERAL */
          SHA512_MECH_INFO_TYPE,          /* SUN_CKM_SHA512 */
          SHA512_HMAC_MECH_INFO_TYPE,     /* SUN_CKM_SHA512_HMAC */
!         SHA512_HMAC_GEN_MECH_INFO_TYPE  /* SUN_CKM_SHA512_HMAC_GENERAL */
  } sha2_mech_type_t;
  
  #endif /* _SHA2_IMPL */
  
  #ifdef  __cplusplus
--- 135,147 ----
          SHA384_MECH_INFO_TYPE,          /* SUN_CKM_SHA384 */
          SHA384_HMAC_MECH_INFO_TYPE,     /* SUN_CKM_SHA384_HMAC */
          SHA384_HMAC_GEN_MECH_INFO_TYPE, /* SUN_CKM_SHA384_HMAC_GENERAL */
          SHA512_MECH_INFO_TYPE,          /* SUN_CKM_SHA512 */
          SHA512_HMAC_MECH_INFO_TYPE,     /* SUN_CKM_SHA512_HMAC */
!         SHA512_HMAC_GEN_MECH_INFO_TYPE, /* SUN_CKM_SHA512_HMAC_GENERAL */
!         SHA512_224_MECH_INFO_TYPE,      /* SUN_CKM_SHA512_224 */
!         SHA512_256_MECH_INFO_TYPE       /* SUN_CKM_SHA512_256 */
  } sha2_mech_type_t;
  
  #endif /* _SHA2_IMPL */
  
  #ifdef  __cplusplus