lib/sha512.h

   1 /*
   2  *      BIRD Library -- SHA-512 and SHA-384 Hash Functions,
   3  *                      HMAC-SHA-512 and HMAC-SHA-384 Functions
   4  *
   5  *      (c) 2015 CZ.NIC z.s.p.o.
   6  *
   7  *      Based on the code from libgcrypt-1.6.0, which is
   8  *      (c) 2003, 2006, 2008, 2009 Free Software Foundation, Inc.
   9  *
  10  *      Can be freely distributed and used under the terms of the GNU GPL.
  11  */
  12
  13 #ifndef _BIRD_SHA512_H_
  14 #define _BIRD_SHA512_H_
  15
  16 #include "nest/bird.h"
  17
  18
  19 #define SHA384_SIZE             48
  20 #define SHA384_HEX_SIZE         97
  21 #define SHA384_BLOCK_SIZE       128
  22
  23 #define SHA512_SIZE             64
  24 #define SHA512_HEX_SIZE         129
  25 #define SHA512_BLOCK_SIZE       128
  26
  27
  28 struct sha512_context {
  29   u64 h0, h1, h2, h3, h4, h5, h6, h7;
  30   byte buf[SHA512_BLOCK_SIZE];
  31   uint nblocks;
  32   uint count;
  33 };
  34
  35 #define sha384_context sha512_context
  36
  37
  38 void sha512_init(struct sha512_context *ctx);
  39 void sha384_init(struct sha384_context *ctx);
  40
  41 void sha512_update(struct sha512_context *ctx, const byte *buf, size_t len);
  42 static inline void sha384_update(struct sha384_context *ctx, const byte *buf, size_t len)
  43 { sha512_update(ctx, buf, len); }
  44
  45 byte *sha512_final(struct sha512_context *ctx);
  46 static inline byte *sha384_final(struct sha384_context *ctx)
  47 { return sha512_final(ctx); }
  48
  49
  50 /*
  51  *      HMAC-SHA512, HMAC-SHA384
  52  */
  53
  54 struct sha512_hmac_context
  55 {
  56   struct sha512_context ictx;
  57   struct sha512_context octx;
  58 };
  59
  60 #define sha384_hmac_context sha512_hmac_context
  61
  62
  63 void sha512_hmac_init(struct sha512_hmac_context *ctx, const byte *key, size_t keylen);
  64 void sha384_hmac_init(struct sha384_hmac_context *ctx, const byte *key, size_t keylen);
  65
  66 void sha512_hmac_update(struct sha512_hmac_context *ctx, const byte *buf, size_t buflen);
  67 void sha384_hmac_update(struct sha384_hmac_context *ctx, const byte *buf, size_t buflen);
  68
  69 byte *sha512_hmac_final(struct sha512_hmac_context *ctx);
  70 byte *sha384_hmac_final(struct sha384_hmac_context *ctx);
  71
  72
  73 #endif /* _BIRD_SHA512_H_ */