Commit 03dd45f5 authored by Dmitry Baryshkov's avatar Dmitry Baryshkov Committed by Niels Möller
Browse files

gosthash94: switch to using MD_UPDATE() macro

parent 43b5a727
......@@ -283,6 +283,8 @@ gost_compute_sum_and_hash (struct gosthash94_ctx *ctx, const uint8_t *block,
gost_block_compress (ctx, block_le, sbox);
}
#define COMPRESS(ctx, block) gost_compute_sum_and_hash((ctx), (block), sbox);
/**
* Calculate message hash.
* Can be called repeatedly with chunks of the message to be hashed.
......@@ -296,33 +298,7 @@ gosthash94_update_int (struct gosthash94_ctx *ctx,
size_t length, const uint8_t *msg,
const uint32_t sbox[4][256])
{
unsigned index = (unsigned) ctx->length & 31;
ctx->length += length;
/* fill partial block */
if (index)
{
unsigned left = GOSTHASH94_BLOCK_SIZE - index;
memcpy (ctx->message + index, msg, (length < left ? length : left));
if (length < left)
return;
/* process partial block */
gost_compute_sum_and_hash (ctx, ctx->message, sbox);
msg += left;
length -= left;
}
while (length >= GOSTHASH94_BLOCK_SIZE)
{
gost_compute_sum_and_hash (ctx, msg, sbox);
msg += GOSTHASH94_BLOCK_SIZE;
length -= GOSTHASH94_BLOCK_SIZE;
}
if (length)
{
/* save leftovers */
memcpy (ctx->message, msg, length);
}
MD_UPDATE(ctx, length, msg, COMPRESS, ctx->count++);
}
/**
......@@ -368,21 +344,20 @@ gosthash94_write_digest (struct gosthash94_ctx *ctx,
size_t length, uint8_t *result,
const uint32_t sbox[4][256])
{
unsigned index = ctx->length & 31;
uint32_t msg32[8];
uint32_t msg32[GOSTHASH94_BLOCK_SIZE / 4];
assert(length <= GOSTHASH94_DIGEST_SIZE);
/* pad the last block with zeroes and hash it */
if (index > 0)
if (ctx->index > 0)
{
memset (ctx->message + index, 0, 32 - index);
gost_compute_sum_and_hash (ctx, ctx->message, sbox);
memset (ctx->block + ctx->index, 0, GOSTHASH94_BLOCK_SIZE - ctx->index);
gost_compute_sum_and_hash (ctx, ctx->block, sbox);
}
/* hash the message length and the sum */
msg32[0] = ctx->length << 3;
msg32[1] = ctx->length >> 29;
msg32[0] = (ctx->count << 8) | (ctx->index << 3);
msg32[1] = ctx->count >> 24;
memset (msg32 + 2, 0, sizeof (uint32_t) * 6);
gost_block_compress (ctx, msg32, sbox);
......
......@@ -89,8 +89,9 @@ struct gosthash94_ctx
{
uint32_t hash[8]; /* algorithm 256-bit state */
uint32_t sum[8]; /* sum of processed message blocks */
uint64_t length; /* number of processed bytes */
uint8_t message[GOSTHASH94_BLOCK_SIZE]; /* 256-bit buffer for leftovers */
uint64_t count; /* Block count */
unsigned index; /* Into buffer */
uint8_t block[GOSTHASH94_BLOCK_SIZE]; /* 256-bit buffer for leftovers */
};
#define gosthash94cp_ctx gosthash94_ctx
......
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