Fix bug in randpool_getN.

git-svn-id: https://src.develer.com/svnoss/bertos/trunk@782 38d2e660-2303-0410-9eaa-f027e97ec537

diff --git a/algos/randpool.c b/algos/randpool.c
index ed9bf436df090269e7c8f25e10a6bdc9a43f8263..b7681d26d69ef98b38bf5b9d15733f63b23899ce 100755 (executable)
--- a/algos/randpool.c
+++ b/algos/randpool.c
@@ -13,6 +13,9 @@
 
 /*#*
  *#* $Log$
+ *#* Revision 1.15  2007/02/13 15:09:19  asterix
+ *#* Fix bug in randpool_getN.
+ *#*
  *#* Revision 1.14  2007/02/13 09:57:12  asterix
  *#* Add directive #if in struct EntropyPool, and remove #else in randpool_add.
  *#*
@@ -212,7 +215,8 @@ void randpool_getN(EntropyPool *pool, void *_data, size_t n_byte)
 {
        Md2Context context;
        size_t i = pool->pos_get;
-       int n = n_byte;
+       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);
        uint8_t *data;
 
@@ -229,11 +233,12 @@ void randpool_getN(EntropyPool *pool, void *_data, size_t n_byte)
                /*Hash previous state of pool*/
                md2_update(&context, &pool->pool_entropy[i], CONFIG_MD2_BLOCK_LEN);
 
-               memcpy(data, md2_end(&context), len);
+               memcpy(&data[prev], md2_end(&context), len);
 
-               n -= len; //Number of byte copied in data.
+               pos_write += len;   //Update number of block has been written in data.
+               n -= len;           //Number of byte copied in data.
 
-               len = MIN(n, CONFIG_MD2_BLOCK_LEN);
+               len = MIN(n,(size_t)CONFIG_MD2_BLOCK_LEN);
 
                i = (i + CONFIG_MD2_BLOCK_LEN) % CONFIG_SIZE_ENTROPY_POOL;
 
@@ -243,8 +248,10 @@ void randpool_getN(EntropyPool *pool, void *_data, size_t n_byte)
                        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.