ceph/src/crypto/isa-l/isa-l_crypto/mh_sha1/mh_sha1_finalize_base.c

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  29
  30 /*
  31  * mh_sha1_finalize_base.c contains the prototypes of mh_sha1_finalize_XXX
  32  * and mh_sha1_tail_XXX. Default definitions are base type which generates
  33  * mh_sha1_finalize_base and mh_sha1_tail_base. Other types are generated
  34  * through different predefined macros by mh_sha1.c.
  35  * mh_sha1_tail is used to calculate the last incomplete block of input
  36  * data. mh_sha1_finalize is the mh_sha1_ctx wrapper of mh_sha1_tail.
  37  */
  38 #ifndef MH_SHA1_FINALIZE_FUNCTION
  39 #include <string.h>
  40 #include "mh_sha1_internal.h"
  41
  42 #define MH_SHA1_FINALIZE_FUNCTION       mh_sha1_finalize_base
  43 #define MH_SHA1_TAIL_FUNCTION           mh_sha1_tail_base
  44 #define MH_SHA1_BLOCK_FUNCTION          mh_sha1_block_base
  45 #define MH_SHA1_FINALIZE_SLVER
  46 #endif
  47
  48 void MH_SHA1_TAIL_FUNCTION(uint8_t * partial_buffer, uint32_t total_len,
  49                            uint32_t(*mh_sha1_segs_digests)[HASH_SEGS], uint8_t * frame_buffer,
  50                            uint32_t digests[SHA1_DIGEST_WORDS])
  51 {
  52         uint64_t partial_buffer_len, len_in_bit;
  53
  54         partial_buffer_len = total_len % MH_SHA1_BLOCK_SIZE;
  55
  56         // Padding the first block
  57         partial_buffer[partial_buffer_len] = 0x80;
  58         partial_buffer_len++;
  59         memset(partial_buffer + partial_buffer_len, 0,
  60                MH_SHA1_BLOCK_SIZE - partial_buffer_len);
  61
  62         // Calculate the first block without total_length if padding needs 2 block
  63         if (partial_buffer_len > (MH_SHA1_BLOCK_SIZE - 8)) {
  64                 MH_SHA1_BLOCK_FUNCTION(partial_buffer, mh_sha1_segs_digests, frame_buffer, 1);
  65                 //Padding the second block
  66                 memset(partial_buffer, 0, MH_SHA1_BLOCK_SIZE);
  67         }
  68         //Padding the block
  69         len_in_bit = bswap64((uint64_t) total_len * 8);
  70         *(uint64_t *) (partial_buffer + MH_SHA1_BLOCK_SIZE - 8) = len_in_bit;
  71         MH_SHA1_BLOCK_FUNCTION(partial_buffer, mh_sha1_segs_digests, frame_buffer, 1);
  72
  73         //Calculate multi-hash SHA1 digests (segment digests as input message)
  74         sha1_for_mh_sha1((uint8_t *) mh_sha1_segs_digests, digests,
  75                          4 * SHA1_DIGEST_WORDS * HASH_SEGS);
  76
  77         return;
  78 }
  79
  80 int MH_SHA1_FINALIZE_FUNCTION(struct mh_sha1_ctx *ctx, void *mh_sha1_digest)
  81 {
  82         uint8_t *partial_block_buffer;
  83         uint64_t total_len;
  84         uint32_t(*mh_sha1_segs_digests)[HASH_SEGS];
  85         uint8_t *aligned_frame_buffer;
  86
  87         if (ctx == NULL)
  88                 return MH_SHA1_CTX_ERROR_NULL;
  89
  90         total_len = ctx->total_length;
  91         partial_block_buffer = ctx->partial_block_buffer;
  92
  93         /* mh_sha1 tail */
  94         aligned_frame_buffer = (uint8_t *) ALIGN_64(ctx->frame_buffer);
  95         mh_sha1_segs_digests = (uint32_t(*)[HASH_SEGS]) ctx->mh_sha1_interim_digests;
  96
  97         MH_SHA1_TAIL_FUNCTION(partial_block_buffer, total_len, mh_sha1_segs_digests,
  98                               aligned_frame_buffer, ctx->mh_sha1_digest);
  99
 100         /* Output the digests of mh_sha1 */
 101         if (mh_sha1_digest != NULL) {
 102                 ((uint32_t *) mh_sha1_digest)[0] = ctx->mh_sha1_digest[0];
 103                 ((uint32_t *) mh_sha1_digest)[1] = ctx->mh_sha1_digest[1];
 104                 ((uint32_t *) mh_sha1_digest)[2] = ctx->mh_sha1_digest[2];
 105                 ((uint32_t *) mh_sha1_digest)[3] = ctx->mh_sha1_digest[3];
 106                 ((uint32_t *) mh_sha1_digest)[4] = ctx->mh_sha1_digest[4];
 107         }
 108
 109         return MH_SHA1_CTX_ERROR_NONE;
 110 }
 111
 112 #ifdef MH_SHA1_FINALIZE_SLVER
 113 struct slver {
 114         uint16_t snum;
 115         uint8_t ver;
 116         uint8_t core;
 117 };
 118
 119 // Version info
 120 struct slver mh_sha1_finalize_base_slver_0000027b;
 121 struct slver mh_sha1_finalize_base_slver = { 0x027b, 0x00, 0x00 };
 122 #endif