/*#*
*#* $Log$
- *#* Revision 1.18 2007/02/15 13:48:40 asterix
- *#* Fix bug in randpool_init.
+ *#* Revision 1.20 2007/06/07 16:06:39 batt
+ *#* Fix some doxygen errors.
+ *#*
+ *#* Revision 1.19 2007/02/15 13:54:26 asterix
+ *#* Rename randpool_getN in randpool_get. Fix bug in randpool_get.
*#*
*#* Revision 1.17 2007/02/15 13:40:42 asterix
*#* Fix bug in randpool_add and randpool_strir.
}
/**
- * Add \param entropy bits from \param data buffer to the entropy \param pool.
+ * Add \param entropy bits from \param data buffer to the entropy \param pool
*/
void randpool_add(EntropyPool *pool, void *data, size_t entropy)
{
return pool->entropy;
}
-void randpool_get(EntropyPool *pool, void *data, size_t n_byte)
-{
-
-}
-
/**
- * Get n_byte from entropy pool. If n_byte is larger than number
- * byte of entropy in entropy pool, rand_pool_getN continue
+ * Get \param n_byte from entropy pool. If n_byte is larger than number
+ * byte of entropy in entropy pool, randpool_get continue
* to generate pseudocasual value from previous state of
* pool.
+ * \param n_byte number fo bytes to read.
+ * \param pool is the pool entropy context.
+ * \param _data is the pointer to write the random data to.
*/
-void randpool_getN(EntropyPool *pool, void *_data, size_t n_byte)
+void randpool_get(EntropyPool *pool, void *_data, size_t n_byte)
{
Md2Context context;
size_t i = pool->pos_get;
size_t n = n_byte;
size_t pos_write = 0; //Number of block has been written in data.
- size_t len = MIN((size_t)CONFIG_MD2_BLOCK_LEN, n_byte);
+ size_t len = MIN((size_t)MD2_DIGEST_LEN, n_byte);
uint8_t *data;
data = (uint8_t *)_data;
/* Test if i + CONFIG_MD2_BLOCK_LEN is inside of entropy pool.*/
- ASSERT((CONFIG_MD2_BLOCK_LEN + i) < CONFIG_SIZE_ENTROPY_POOL);
+ ASSERT((MD2_DIGEST_LEN + i) < CONFIG_SIZE_ENTROPY_POOL);
- md2_init(&context);
+ md2_init(&context);
while(n > 0)
{
/*Hash previous state of pool*/
- md2_update(&context, &pool->pool_entropy[i], CONFIG_MD2_BLOCK_LEN);
+ md2_update(&context, &pool->pool_entropy[i], MD2_DIGEST_LEN);
memcpy(&data[pos_write], md2_end(&context), len);
pos_write += len; //Update number of block has been written in data.
n -= len; //Number of byte copied in data.
- len = MIN(n,(size_t)CONFIG_MD2_BLOCK_LEN);
+ len = MIN(n,(size_t)MD2_DIGEST_LEN);
- i = (i + CONFIG_MD2_BLOCK_LEN) % CONFIG_SIZE_ENTROPY_POOL;
+ i = (i + MD2_DIGEST_LEN) % CONFIG_SIZE_ENTROPY_POOL;
/* If we haven't more entropy pool to hash, we stir it.*/
- if(i < CONFIG_MD2_BLOCK_LEN)
+ if(i < MD2_DIGEST_LEN)
{
randpool_stir(pool);
i = pool->pos_get;
}
}
-
pool->pos_get = i; //Current number of byte we get from pool.
-
pool->entropy -= n_byte; //Update a entropy.
/*If we get all entropy entropy is 0*/